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Russian
00:00:03
Anton's Bersani stains behind me again,00:00:06
some scary picture, I'll even step00:00:09
aside that you could appreciate00:00:10
some incredible scheme to the announcers00:00:14
degree, I like to draw all sorts of diagrams,00:00:16
complex plasticization structures, but for00:00:19
what purpose and in order to It was00:00:21
then possible to decompose some complex00:00:24
processes and mechanisms into components00:00:26
so that it would be clearer to you and how it all00:00:29
works and today we will touch on00:00:32
one of the, in my opinion, very interesting00:00:35
and complex topics: roller-cone00:00:38
rock-cutting tools, from this00:00:40
moment a certain series of00:00:43
videos opens that will be devoted00:00:45
to the00:00:46
design of rock-cutting00:00:49
tools, what types they are and how they00:00:51
differ from each other, how00:00:54
some rock-cutting tools are00:00:56
better than others, and so on, and we’ll just00:01:00
touch on such issues as how to00:01:03
choose a rock-cutting tool for00:01:05
your drilling conditions;00:01:08
we’ll actually talk about how work with a parade with a00:01:11
destructive tool, that is, how to00:01:13
prepare for work, how it works,00:01:16
how to lower a well and how to00:01:18
smoke correctly in accordance with its passport00:01:20
characteristics, and of course, we will learn to00:01:23
evaluate wear, that is, how codes are written,00:01:26
what is it for, but00:01:28
we need to regret all aspects of our and we00:01:30
will analyze a whole series of00:01:33
video lectures, but today, as I am the enemy,00:01:35
we will talk only about a roller rock00:01:38
cutting tool and00:01:40
periodically my chatting will be00:01:42
interrupted by close-ups of drilling00:01:45
equipment, that is, here are specific00:01:47
photographs that will appear,00:01:49
the name of which you will watch00:01:52
in order to better understand what I mean00:01:55
I say, and from time to time we will00:01:57
switch to another format, there will be a close-up of00:02:00
some roads, their structures, I00:02:03
will specifically00:02:04
lay out what and how, why I00:02:07
call it that way, what is responsible for what, and so00:02:10
on, so I think the lectures should be00:02:14
well filled, interesting if00:02:17
we talk about the breeds you destroy a00:02:20
good one with the tool and then it is divided into bits and00:02:23
drill heads, that is, in fact, the diagram00:02:25
will be built. You, as I already00:02:28
told you, are used either for the complete00:02:31
destruction of more rock,00:02:33
or sometimes a frying00:02:35
rock-destroying tool can be00:02:37
used for expansion immediately00:02:39
note this is one good one for00:02:42
local bore extensions of a complex00:02:45
drilling head00:02:46
are used to obtain kerma from00:02:49
wells; they are all three holes and00:02:55
differ in this, that is, kermite is the00:02:57
sample of rock that we00:02:59
extract to the surface in order to00:03:02
perform00:03:03
some kind of manipulation with it, and00:03:05
our task today is to get completely00:03:08
into the00:03:09
roller cone structure bits how it functions00:03:12
what elements it consists of and what00:03:14
elements are responsible for what why I think00:03:17
the collection is more interesting and00:03:20
useful for your horizons00:03:22
because roller cone bits are different00:03:25
from all others00:03:26
gives relocations of diamond up to the elbow psm and00:03:30
so on with their00:03:31
technological complexity, that is, they were00:03:34
invented in the early 1900s by00:03:37
Howard Smith and made it possible to actually00:03:42
make a breakthrough in drilling wells,00:03:44
but it was I and the specifics, that is, the presence of00:03:47
bearings for rotating parts, an interesting00:03:50
flushing system, an interesting effect of00:03:53
slipping cones, and so on, this is00:03:56
all so let’s say amazing that00:03:59
I think it’s worth paying attention to attention,00:04:01
so let's understand the design00:04:05
in fact, any gold has a body,00:04:09
if we talk about the body in a proper way,00:04:11
it consists of threads, the body of the pizza legs,00:04:15
and so on, let's look at these elements:00:04:20
thread,00:04:21
this element with the help of which the bit00:04:24
is connected to the drill string or to the00:04:27
technological equipment for example, there is a00:04:29
support for a centering tool with the00:04:31
same calibrator me00:04:33
reshma can be either nipple or00:04:35
coupling, that is, it does not kick, but an external00:04:38
thread,00:04:39
or just like at home,00:04:41
finally, the male type and the coupling thread00:04:45
is an00:04:46
internal thread, that is, this is the end of the00:04:48
female type, if we are talking about that, let’s say yes, a00:04:53
lot of town always00:04:55
have nipples of very roller-cone bits00:04:58
if the head is smoked, it can be00:05:03
that is, both this and that, and we00:05:06
will get acquainted with this later on the body of the body of the day itself,00:05:11
as we know from00:05:15
literature sources, there can be two types,00:05:17
either free will, what is for the people what they00:05:20
said before love, but in fact it should be00:05:23
noted that most of the bits have a00:05:26
welded body, farr course and body, that is,00:05:29
elements were made separately that were then00:05:32
felled and processed00:05:35
technologically, and this was the case for a00:05:38
long time because that’s how it is, but in00:05:41
fact it’s more efficient than the cost of 500:05:44
processing to assemble one whole from the initial several00:05:47
parts,00:05:48
then to bring it to mind,00:05:50
of course, did you still have moldings, but like00:05:55
such chisels, I haven’t seen the souls00:05:57
that opened sorrows and then went through00:05:59
metalworking, but this also00:06:01
includes the so-called chisels that00:06:04
are made on the stat map why it is taken00:06:08
metal blank and it is already00:06:11
cut out with Chupov tanks, again in00:06:14
relation to roller-cone bits, I a little00:06:16
doubt that this method is more00:06:19
effective than using a welded00:06:22
type structure, each so to speak body,00:06:27
it branches out, turns into a00:06:30
bud like this and the petals of this bud00:06:33
are the chisel legs,00:06:36
that is, the lapadula then there are separate ones coming out00:06:40
of the body on which the00:06:43
cutters are located, just the same rotating00:06:46
elements00:06:47
of this shovel, they also come out of the body,00:06:53
but I’ll also talk about the welded body, that is,00:06:56
at first how00:06:57
to do it, a paw with00:07:00
a pin was made, several such blanks were taken00:07:04
from the brew, only they00:07:06
were formed and a single body00:07:08
was broken by laziness at each end of the paw,00:07:11
we have a kingdom00:07:13
that there is a sofa, this is the train rotation of00:07:17
the gatehouse, that is, this is the place where we have00:07:19
either roller bearings, plain00:07:23
bearings,00:07:24
in other words, the supporting unit of the house,00:07:27
on which we place the cutter, the cutter00:07:30
rotates around its axis00:07:32
if you generalize with us, it turns out,00:07:35
okay, it starts from the thread,00:07:37
goes into the body, the body branches00:07:40
into paws00:07:41
and the paws end with numbers on which the00:07:44
roller cutters will be installed after the fact,00:07:47
now you’ll pause for a second and00:07:50
look at this in detail using the example of00:07:52
real00:07:55
friends, in front of you are real examples of00:07:58
roller cutter types of destructive00:08:00
tools here there is a bit for00:08:02
destruction with a solid face 3 hornet00:08:05
type 1 roller bit which00:08:08
allows you to expand the wellbore locally00:08:11
due to the offset displacement of the axis of rotation of00:08:15
the roller relative to the axis of rotation 2 then00:08:18
we also have examples of00:08:21
drilling heads here,00:08:23
that is, as I already said, the drilling00:08:25
head is different from a drill bit00:08:27
in that there is a hole not in the center where a pick00:08:29
can pass during the process of00:08:32
destroying rocks along the periphery of00:08:36
the fence and so on, what else can be said, you can00:08:39
pay attention to the design00:08:41
features, that is, as I already said in the00:08:44
first part of the lecture, we have the so-00:08:47
called not saw00:08:49
connections this type of connection is always00:08:52
present on drill bits00:08:53
emergency heads they can have both a00:08:56
dust-free part of the connection so this is00:08:58
how you can see here the00:09:00
completely smooth part 2 that is, the00:09:02
thread is cut into on the inside of the00:09:04
body we talked to you about the design of00:09:09
the bit in relation to00:09:10
the composition of its body, we will pay00:09:12
attention to this in the same way, look at the00:09:15
example of a welded body, that is, the00:09:18
welds on the body are clearly visible200:09:22
even if we consider the00:09:26
same relations of the bits, of course they00:09:29
belong there that have a cast00:09:31
body00:09:32
or the one that was obtained as a00:09:36
result of metalworking some kind of00:09:38
blank, that is, not even by the injection00:09:41
method, but this blank was taken and00:09:43
brought to mind using CNC machines00:09:46
or milling machines of an even00:09:49
simpler type, if we talk about drill00:09:53
heads, then they have this base, that00:09:56
is, like this type drilling00:09:58
heads in the rendered00:09:59
it was taken, made possible blanks you00:10:03
milled and the chisel foot is already attached to it using a weed00:10:05
method.00:10:06
Basically, we encounter a00:10:10
welded body of what type when00:10:12
individual blanks are taken, the feet are00:10:17
connected as part of the body to each other, it00:10:20
fails, that is, this can be00:10:22
observed as drill00:10:26
bits so you drill heads here you can00:10:28
also clearly see the guys should, but the difference between the00:10:32
same 8th real head if you00:10:34
look carefully inside there is, so to speak, a00:10:38
certain body part that00:10:41
was originally installed around which the00:10:43
removal of body elements was carried out, the00:10:48
central part is some in fact, it00:10:51
will skip into itself00:10:53
how else you can note the features of00:10:56
the impact gave00:10:59
inside each cutter there is a so-00:11:03
called workshop axle and that is, the axis00:11:06
of rotation of the cutter on which the00:11:09
support unit is located, but we will now00:11:12
talk about the axles separately, that is, we will look at the00:11:14
hidden support unit of the cutter and specifically00:11:18
let's look at what a safari looks like, what it is,00:11:21
so don't switch, friends, and churches,00:11:25
we'll talk at this stand, that is,00:11:27
this is a wonderful stand that is located on the00:11:29
wall of the Tomsk Polytechnic00:11:30
University on the profile of the department of storms,00:11:33
the former department of drilling oil and00:11:35
gas wells, and it is00:11:37
examined quite well and in detail the00:11:39
design of the roller cutter and so00:11:42
there is a scarf tac and that is, a continuation of the00:11:45
claw which is very useful for rotating the00:11:48
roller cutter. The00:11:50
dac is a kind of shaft on00:11:52
which bearings can be located in several00:11:54
rows, that is, special00:11:56
grooves are made for the bearings; in addition,00:11:59
shaky ones, a special hole is made00:12:02
for inserting the locking balls00:12:04
bearing that allows you to hold the00:12:07
cutter so that it does not fall off, that00:12:10
is, it fixes it on the church, what it00:12:14
looks like, the assembly looks good can00:12:16
be seen in this example, here00:12:20
we have a cone cut out with horns along with00:12:22
part of the numbers and00:12:24
share 2 ball bearings and one00:12:26
roller bearing that are installed on00:12:30
churches for rotating the cutter so that00:12:32
attack and rotation around00:12:35
its axis are carried out and it is important to note that00:12:37
bearings can be used00:12:40
not only rolling bearings but also00:12:41
sliding bearings, but we00:12:43
will talk about this in detail a little later, I will00:12:47
repeat again the female00:12:48
is the axis for rotating the cutter and let me00:12:52
remind you once again How do you basically form 2,00:12:55
that is,00:12:57
one of two chisels, or it is initially00:12:59
cast in some form,00:13:02
metalworking is done, or it takes00:13:05
several blanks, a00:13:07
target on the body, from which it is cut out with00:13:10
tanks to a chip, or what most often00:13:12
happens, such blanks are taken separately00:13:14
in the form of already finished parts of the00:13:17
body with a paw and steve vai and00:13:19
welded together and naturally00:13:22
then, through additional00:13:24
metalworking, the overall general appearance of the bit is brought to mind00:13:27
and then00:13:32
thread cutting is carried out, that is,00:13:35
thread cutting is carried out at the00:13:36
final moment of forming00:13:38
the body of the bit, which I will pay attention to and I00:13:42
promised a little about this previously, for00:13:45
the formation of drilling heads,00:13:47
hosts are usually taken, that is, a certain00:13:48
cylindrical part on which the00:13:52
balls of the legs are already welded so fame, that00:13:57
is, this cylindrical part is needed for00:13:59
greater symmetry of the drilling head00:14:02
or, in fact, to give it greater00:14:05
rigidity, that is, the body has more00:14:07
rigidity because often drilling the heads00:14:09
consist of many and in any00:14:13
case00:14:14
they need some kind of conditionally additional00:14:16
stiffening ribs, which fulfills00:14:19
some degrees, the role which fulfills00:14:22
some degrees, this is the central00:14:24
cylindrical bushing, which00:14:25
welds all the other00:14:27
parts, and so colleagues, we00:14:31
have analyzed in detail the information on the bit body the00:14:34
next in line is the support unit,00:14:38
so don’t switch, as for00:14:41
the support unit, this is directly00:14:45
the set of bearings on which the00:14:48
cutter rotates, then it will be00:14:50
possible a little bit00:14:52
for the house to figure it out,00:14:54
and so once again the00:14:56
support unit and that is, the set of00:15:00
bearings on which the cutter rotates00:15:03
if we will talk about the experience given the00:15:05
support unit can be high-speed00:15:08
medium-sized one tardigrade00:15:09
what is the actual difference the difference in the00:15:13
set of bearings that00:15:15
are used inside this unit if all00:15:18
the rolling bearings means the cutter will00:15:21
rotate easily, that is, it is either a ball00:15:24
or roller bearings00:15:25
knows that it will be high-speed this indicates00:15:27
that such a date can be rotated with00:15:30
very good rotation speeds,00:15:33
but at the same time it cannot be heavily loaded00:15:36
because large loads will00:15:38
lead to excess vibration and00:15:41
bearings and they are afraid they will be00:15:47
built earlier by his colleagues than dressed if you were00:15:50
talking about medium-sized water called00:15:54
pores on skis this means we have their chicken not a00:15:57
plain bearing and all the other00:16:01
rolling bearings, if we talk about the Oscar bearing, would00:16:05
they come in the form of a bushing, that is,00:16:08
it is a bushing in a bushing, so I think yes,00:16:10
videos will appear, so to speak,00:16:12
with images of bearings or the storm is00:16:15
not used yet the principle of a00:16:17
disc-type sliding bearing,00:16:19
that is, when a conventional plate is placed on the trunnion up to the tops of the section,00:16:22
which00:16:24
transmits rotation,00:16:25
usually sliding bearings are made00:16:28
from materials that are conditionally00:16:29
self-lubricating, for example, with a00:16:32
gradation effect, that is, with a bronze element in00:16:35
order to reduce the friction force and so the00:16:38
average stroke is not they can withstand both the00:16:42
average medium range of frequencies and the00:16:45
average range of loads and the low-speed and the00:16:49
unit has been quietly running for years and what we00:16:51
use 2 nights for me to slide is the00:16:53
design of the shape of the unit and all the other rolling00:16:56
bearings, what does it mean all the00:16:58
other average bearings can be00:17:01
near it usually stands at either 3 either 400:17:05
ball bearings, one roller is not present at all,00:17:08
or for example, two sliding00:17:11
and rolling bearings,00:17:13
sometimes this arrangement, as already00:17:15
scouted, consists of four bearings,00:17:18
but usually no more than that, the standard00:17:22
figure is generally 3 bearings, and so this00:17:26
concerns the bearings themselves for00:17:31
good,00:17:32
that is, how they line up if in00:17:35
Guam about roller-cone drill heads,00:17:38
here, in principle, the idea is that either00:17:45
ball rolling pincers or roller bearings are always used, or in00:17:48
some cases a combination of rolling bearings and00:17:50
plain bearings, but as00:17:53
practice shows, plain bearings are00:17:55
not so often used in the00:17:57
design of good smoked heads00:18:00
because they they do not require large00:18:02
loads, large axial loads, and there, in00:18:06
principle, we are not chasing high00:18:08
mechanical speed, unlike,00:18:10
of course, Burando forehead, that is, the idea of a00:18:14
sliding bearing, the idea of including it, the00:18:16
design of the bit00:18:18
is only that we want00:18:21
the bit to be able to take more axial00:18:24
load, that is gave a greater effect of00:18:27
destruction of rocks, but again, let me00:18:29
draw your attention to the fact that the dependences on00:18:32
the configuration of the support unit differ,00:18:35
which can be rotated quickly but00:18:38
cannot be heavily loaded, and vice versa, that00:18:40
roughly speaking the range here is the following00:18:44
low-speed ones, yes they have a rotation speed range of00:18:47
150-200 to 250 revolutions per minute00:18:51
will come, otherwise they will00:18:54
overheat greatly and the00:18:57
sliding bearings will not simply recover00:18:59
from fear. If we are talking about00:19:02
high-speed bits, then the range here00:19:05
can reach somewhere between 500 and 600 rpm, a00:19:09
range that00:19:11
they can easily withstand00:19:14
in addition to this. It00:19:16
also depends on what kind of bearing we have,00:19:19
how we secure the cutter on the map, that is,00:19:24
the logic is that we don’t want00:19:26
the cutter to fall off in the Guria process,00:19:28
that is, we or we separately had a00:19:30
burnout, it should not fall off, how is this00:19:33
achieved, this is achieved with a chisel00:19:36
using locking bearing, that is, the00:19:38
idea of a locking bearing is that it is a00:19:41
central bearing00:19:43
that is installed00:19:45
after we have placed the cutter,00:19:49
that is, the logic is something like this to00:19:51
eat a car, you place the main00:19:54
bearings, put on the roller cutter, and00:19:58
then press the locking bearing into it using a special method.00:20:01
Now consider it in more detail00:20:02
and the locking bearing00:20:05
is trampled by the lock with a finger that does not00:20:07
allow it to crumble and our00:20:09
cutter remains sitting quietly00:20:12
regionally together if we talk00:20:15
directly about how the00:20:19
cutters are secured to the guys head, there are two00:20:23
options, either the bushing principle, that00:20:25
is, when only00:20:27
2 sides of the cutter are punched and welded on it00:20:29
rotates, it depends on the shape of the cutter,00:20:33
but for cone-shaped good ones, the00:20:35
principle of a locking bearing is applied in exactly the same way,00:20:39
that is, when you form locking00:20:42
repairs after the fact of installing the cutter on the00:20:45
center of the colleague,00:20:47
we have sorted out a whole range of00:20:51
information on the support units of good00:20:54
bits, barely legal, and now it’s00:20:56
time for more look at the00:20:59
experimental samples in detail and now00:21:02
friends, with the help of this stand we will again00:21:05
discuss the design of the roller bit support unit00:21:07
with, as I already said, in the00:21:10
roller bit support unit00:21:12
either ball00:21:14
bearings, roller bearings or plain00:21:16
bearings can be used; in fact, there is always the00:21:20
presence of00:21:22
ball bearings or roller bearings00:21:25
and sometimes some combination of a plain bearing can be added to them,00:21:29
that is, we will now look at00:21:31
this using two examples, just like that,00:21:34
we have a good example of a high-speed00:21:37
type bit, here we clearly see two00:21:40
ball bearings and one roller about the error,00:21:42
wow, lotos sa freely rotating00:21:46
my roller cutter, that is, what I mentioned in the00:21:49
lecture, but here we just do00:21:51
n’t show what these00:21:54
same balls and roller bearings look like00:21:57
if we look at the design of00:22:01
this light roller cutter, low-00:22:04
speed bit type because we have00:22:06
1 roller bearing,00:22:07
one a ball bearing and two plain bearings,00:22:10
that is, one bearing in the form of a00:22:12
sleeve is made here, it stands here, and00:22:14
one bearing is in the form of a plate, that is, it is00:22:17
on top. The numbers here are just the00:22:21
same examples of bearings, a sleeve and a plate,00:22:23
which are presented at our stand; they00:22:26
were removed from another roller cone00:22:29
This is just an example of a low-speed dalada of the type00:22:31
that rotates at not very high00:22:34
rotation speeds but at the same time allows it to00:22:36
withstand quite high axial00:22:39
loads. As you may have noticed, the00:22:41
mandatory conditions for the operation of any00:22:45
support unit is the presence of at least00:22:47
one rolling bearing in00:22:50
the form of ball bearings, this00:22:52
ball bearing. first of all, it is not00:22:55
needed in order to00:22:57
fulfill the role of a locking bearing00:23:00
that allows you to hold the roller cutter, the attachments are00:23:02
not called, I don’t fall off00:23:05
directly from it, and of course we00:23:08
will pay attention to how00:23:11
the cutter is secured notation, that is, let’s00:23:14
talk about locking bearings.00:23:16
The idea is as follows: in the process of00:23:19
making the journal we we make a00:23:22
through hole in it, that is, from the end00:23:26
side of the peripheral part of the house, then we00:23:29
form a hole that has an outlet00:23:32
into the cavity of the cutter, that is, in the church,00:23:36
here you can see it, there is such a00:23:38
passage that goes into the cavity00:23:41
of the cutter, so to speak, there is a through00:23:43
hole, how to install the00:23:46
cutter we install the primary00:23:49
bearing,00:23:50
the roller bearing, two00:23:53
plain bearings, after that we put our00:23:56
sharashka on the axle and through this00:23:59
hole, previously made in00:24:01
the church, we press in all00:24:04
the ball bearings in turn, that is, we pressed in00:24:06
one, turned the roller, pressed in the00:24:09
other, and so on, we sequentially00:24:11
install all the ball-00:24:15
type bearings on our mounting sockets in this00:24:18
way, when we have the00:24:20
very last bearing installed,00:24:22
it will not allow the cutter to fall off, otherwise00:24:26
it is also called the bearing lock,00:24:28
this central pack, after00:24:30
all the00:24:32
bearings have been pressed into the holes, it is00:24:35
installed in what00:24:36
we called the lock pin and it is welded00:24:40
welded from the peripheral part of the bit,00:24:42
this place is ground and00:24:43
lives, just like that, we have an00:24:46
example of this locking pin00:24:49
removed from the body shown here at the stand, then, in principle,00:24:53
if necessary, if you want, you00:24:56
can grind the gold hole here,00:24:59
that is, once prezirate the00:25:01
welding places and tighten the lock to see00:25:04
the ball bearings from the cavity of the00:25:08
cutter and then remove the cutter, this is00:25:11
not always possible00:25:12
because sometimes the cutters get stuck due to the fact00:25:15
that something goes wrong, for00:25:18
example, a plain bearing or a00:25:21
roller bearing, or they generally00:25:22
heat up to such an extent that the00:25:26
cutter jumps towards the church, but that’s how it is let's say a00:25:30
particular case in general form, of course,00:25:33
it is possible to reverse disassemble the00:25:36
supporting unit of the cutter, special00:25:40
attention should be paid to the issues of fastening the00:25:42
cutters on the so-called drilling00:25:44
heads, here it all depends on what00:25:48
type of drilling head we have, that is, in00:25:51
fact, what form of cutters are installed on it00:25:53
if we have drill00:25:55
head with cone-shaped cutters me to00:25:58
here the tremulous cutter is attached00:26:01
in the traditional way in the same way as the00:26:05
brave bits, that is, through a locking00:26:08
bearing, the same applies to the so-called lentil-00:26:11
shaped cutters and00:26:14
spherical cutters if we are talking about00:26:16
one roller cutter when we are talking00:26:19
about cylindrical cutters here simply00:26:21
the specifics for installation are slightly00:26:23
different from we have a paw inside, we have a00:26:27
core of a bit, that is,00:26:29
you can freely place a cutter between them,00:26:33
that is, how this is done, select a trunnion00:26:35
separately, put a support unit on it,00:26:39
put on a cutter, install the trunnion in the00:26:42
form of a bushing, weld it, that is, roughly00:26:44
speaking, the trunnion in our case it plays the role of a bushing;00:26:47
we don’t need a locking pack here, but00:26:50
this is exclusively for drilling heads00:26:52
with cylindrical cutters my that is,00:26:55
which can be installed in this way;00:26:57
for all others, the00:26:59
principle of a locking00:27:01
bearing is used; there is always the question of00:27:06
how to determine which bit I have,00:27:08
high-speed, low-speed, or in vain 1st,00:27:11
that is, what needs to be done, there is one00:27:13
technique that has often been used by00:27:15
bureaus for centuries, that is, just take you and00:27:18
try to turn the cutter by hand,00:27:21
that is, see what it will look like,00:27:23
option 1, option 2, option 3, that is,00:27:29
here the cutter rotates easily, that is, from00:27:32
one touch it makes00:27:33
several revolutions around the stand and here00:27:36
it also scrolls but stops very quickly00:27:40
here it does not move at all, that00:27:42
is, according to the logic of things, this is a00:27:43
high-speed unit,00:27:47
only rolling bearings are used here, this is an average one about00:27:49
this unit, that is, the rocket00:27:51
sliding bearing slows down the cutter quite well00:27:55
that is, when we try to impart00:27:56
rotation because its main task00:27:58
is to perceive the load, here we have a00:28:01
low-speed bit where we install two plain00:28:04
bearings that simply do not00:28:06
allow us the strength to physically rotate the00:28:08
cutter around its axis, and but in this00:28:11
case we need to make a reservation that this does not00:28:14
apply to dunlops Roughly speaking, factory00:28:17
preservation, that is, a bit that is00:28:19
not yet in use, it is often so00:28:22
filled with lubricant that you will00:28:26
not always get the cutter of a high-speed bit00:28:28
back around its axis, all this is00:28:31
also the first moment, the second moment, but00:28:33
it happens that on a high-speed one they00:28:35
came out the bearing and the cutter are out of order, it00:28:37
simply doesn’t rotate, it’s jammed00:28:39
and you might think that it’s00:28:42
low-speed, so the most key00:28:46
indicators would be if we don’t have a00:28:48
friend’s salad passport, look at00:28:51
the end part, that is, on the end part of00:28:54
the thread there is a code 2, then if you are fluent in00:28:58
Dalada codes of this manufacturer, you00:29:01
will be able to answer for yourself what support00:29:04
unit is used in this particular one,00:29:05
and it’s been a long time since our conversation and00:29:10
now our attention will be drawn to our00:29:12
spoons without a cutter,00:29:14
then it’s precisely the part of the chisel that00:29:17
rotates00:29:19
notation, that is, around its axis on the chain00:29:22
with the help of a support bearing assembly, what is00:29:26
the difference between roller cutters, what is the difference between00:29:29
chisels with different lacings, first of all,00:29:31
there is an entertaining sign - this is00:29:33
the number of balls on let's if we are00:29:36
talking about chisels, then we highlight 1 2 3 or00:29:41
more roller cutter bits, here we have the00:29:45
indicated element 1 roller cutter bits,00:29:48
as I have already used for expansion steel00:29:52
wells 2 roller bits and00:29:55
many roller bits, that is, more than00:29:57
three, they are not so widely used at all00:30:01
in real practice, I haven’t seen it, here00:30:04
is a photo, but more will be a00:30:08
large number of often good ones than00:30:10
three, they are used, but in the mining00:30:13
industry, roller bits are difficult to build there00:30:16
Basically, if we are00:30:19
talking about the oil industry,00:30:21
3 roller bits are used,00:30:23
the most common type is dota00:30:26
because the number of 3 provides00:30:30
the best position at the bottom, and that is,00:30:33
in fact, it is00:30:34
well installed,00:30:36
that is, it behaves stably. On the00:30:39
other hand, the fewer essentially00:30:41
bearing units at home, it will that00:30:43
is, three cutters, 3 bearing units, which00:30:46
means that it will last for a long time,00:30:48
well, this logic is quite00:30:51
simple, if you have a bit, for example,00:30:53
with 8 tracks, then obviously some kind of00:30:57
80 bearing units will come out00:31:00
earlier than others if yours is00:31:03
about the so-called rave head here00:31:08
the number of good ones varies so much00:31:11
here straight 3 4 5 6 8 and more eight00:31:16
roller bits here the logic is that the00:31:19
rollers themselves are used00:31:20
a little smaller and are located under the00:31:23
periphery of the fence so that the00:31:26
central part of the face is preserved00:31:28
so usually use a larger00:31:30
number00:31:32
in fact, the number of good ones in this00:31:34
case for drill heads is00:31:37
usually tied to the shape, that is, this is the 2nd00:31:40
classification criterion for a good00:31:43
shape, in good times it was00:31:47
cylindrical in shape and lentils00:31:49
back, that is, these photos00:31:52
appear on the video and in the same way we00:31:56
will talk separately on specific ones00:31:58
exactly specific examples00:32:00
or gave the word, let's remember this form and according00:32:03
to the general logic of carrying lentils,00:32:07
shaped cutters they are always used00:32:13
exclusively when forming 3 good00:32:16
drills gave00:32:18
when we make 4 roller cutters time00:32:21
heads we usually use most often00:32:23
code sleep shaped cutters aac00:32:26
electric used in all the00:32:27
rest cases00:32:28
because the logic of the exchange is simple because it is00:32:34
much easier to make cylinders with arms; it is much easier to place them along00:32:36
the periphery easier than cones or00:32:38
than lentil-shaped elements; if we00:32:42
talk about the shape of the cones of drill bits,00:32:45
then they are cone-shaped,00:32:47
spherical, cylindrical, well, about00:32:50
cylindrical ones, we will touch on the heart so00:32:53
superficially because they00:32:55
say that they are used00:32:57
either to insert modifications or given so00:33:00
for the mining industry,00:33:02
perhaps if yes, there will even be a00:33:04
photograph of such a salad with00:33:06
electric cutters for the mining00:33:08
industry,00:33:10
if we are talking about spherical cutters, this is an00:33:14
exceptional one good debt00:33:16
they are used that you use to00:33:18
expand the wellbore, well Most00:33:21
often, in all cases, it is00:33:23
cone-shaped rollers that are used because, as00:33:25
practice has shown, it is the formation of a rock-00:33:29
cutting tool with00:33:32
wheels that rolls in a way that is most00:33:35
effective compared to others, so to00:33:37
speak, the shape and geometric bodies, this is00:33:40
actually the classification of00:33:43
roller cutters that are good for a rock-cutting00:33:47
tool, that is, once again I repeat, we00:33:50
distinguish two levels, this is the number of balls of00:33:53
chapelle forums, what for drilling heads and what00:33:56
for drill bits,00:33:57
but it is important to remember that there is a00:33:59
certain relationship between them, which I00:34:01
also said00:34:03
and presented to you in this diagram, what we00:34:07
will now analyze and we will now00:34:08
analyze just the same an example of these forms of00:34:12
roller cutters rock destructive00:34:14
tools according to the shape of the cutters, how they00:34:16
can visually look, that is, I00:34:19
drag it, I’ll show you, we’ll discuss one more thing,00:34:24
one can be used in one case or another00:34:26
now in front of you,00:34:30
just all three different shapes and cutters00:34:34
for roller cutter drill bits,00:34:37
this is one roller-cone chisels with ball-shaped00:34:40
roller-cone me3 roller-cone chisels with00:34:44
cone-shaped ball-ears and an example of a00:34:47
chisel with cylindrical ball-shaped horns, as00:34:50
we were told when it was delivered to us, we were00:34:52
told that this is a golota of an old00:34:55
modification, roller-cone, although some00:34:58
armorers say that it is a milling00:35:00
tool, but one way or another00:35:03
information search allowed us to00:35:06
attribute the data to the rock-cutting00:35:08
tool, which was still good00:35:10
because there is a complete destruction00:35:13
of the face, clearly the work is on a continuous cut,00:35:16
not a fence, and + the shape of the elements themselves with00:35:20
milled weapons, the so-00:35:22
called sharoshi,00:35:23
here we have a cylindrical one, that is, and those,00:35:26
so to speak, pictures of ancient houses00:35:28
that we managed to find on the Internet00:35:30
they are, in principle, similar in00:35:33
design to these topics but in00:35:36
fact I repeat once again that the most00:35:38
common are 3 roller-cone00:35:41
bits of age as such 2 roller-cone00:35:43
bits I repeat I have not seen 100:35:46
roller-cone bits are needed to expand the00:35:48
wellbore I Let me remind you once again how00:35:51
this happens, that is, while we are lowering00:35:53
the wells, they are prepared to pass there calmly,00:35:56
but as soon as we begin to rotate around00:35:59
its axis, the bit rotates plus the cutter00:36:03
rotates, and thus we00:36:05
get the following effect due to the00:36:07
displacement of the axis of rotation of the bit00:36:11
relative to the axis of rotation of the cutter, that00:36:15
is they are not on one, these00:36:17
cutters begin to describe a larger circle00:36:20
with its movement00:36:22
than when lowering the well, therefore00:36:25
it conditionally begins to expand the00:36:27
wellbore and now we will see00:36:30
how it actually works, that00:36:32
is, what the rotation of our cutter looks like00:36:35
1 roller bit00:36:37
now you can observe 2 100:36:40
roller-cone bits, it’s a video, that is, they are of00:36:42
different types, sizes,00:36:43
this is for a slightly larger, that is, for a slightly00:36:46
smaller well, this is for a little more00:36:48
why I brought this modification00:36:50
of the bit because here the roller-cone is not00:36:52
sealed, it rotates freely, that is, I00:36:55
will repeat again and de ville the idea the principle of00:36:58
operation of this bit is we lower it into00:37:00
the well, it goes through freely as00:37:03
soon as we start to rotate around its00:37:04
axis, we have a rotation of the cutter, the00:37:08
cutter along its axis does not coincide with the axis of00:37:11
rotation of the bit, that is, the axis of rotation of the00:37:13
cutter does not coincide with very rotation, and00:37:15
as a result, expansion occurs00:37:18
nipple due to the fact that the cutter00:37:20
rolls over a larger diameter, let's00:37:23
see how the cutter of this one rotates,00:37:26
oh well, that is, as you can see,00:37:32
there is a clear eccentricity,00:37:34
it rotates with a displacement of the center and00:37:38
this leads precisely to the expansion of the00:37:40
wellbore, and in this video we are00:37:43
now let's see what the cutters look like00:37:47
when they hit the heads, that is, as I already talked00:37:50
about them, in fact there are three variants of shapes,00:37:52
there are cylindrical types,00:37:55
I hope that they are more or less clearly00:37:57
visible, here one of them rotates in a00:38:00
cone-shaped form and the lentils are of the00:38:04
opposite type, I don’t know why this00:38:06
type of good ones is called that way well,00:38:08
maybe because it looks like half a00:38:11
lentil grain,00:38:12
if you evaluate and compare with00:38:16
each other and the type of cutters, then cylindrical ones are00:38:19
more often used for making00:38:21
borelli heads because they allow you to00:38:22
get the largest core diameter00:38:26
thanks to the morning wood and design00:38:29
features due to what we00:38:30
use there are many small cutters around00:38:33
the perimeter, cone-shaped cutters, they00:38:36
work quite well effectively, that is,00:38:39
again, they allow,00:38:41
by using a smaller number of00:38:44
cutters, to achieve the required volume of00:38:47
destruction due to their shape, but the00:38:49
diameter of the removed core in this case is00:38:52
much smaller and, if we say so,00:38:55
take something in between the first and00:38:58
second ones that get there are precisely the lentil-00:39:00
shaped drill heads with lentil-00:39:03
shaped paths, in fact, but00:39:06
something in between allows you to select a core that is not as large00:39:08
as with a cylindrical00:39:10
roller cutter and not as small as with a00:39:13
cone-shaped one. Roughly speaking, they can00:39:15
also be classified according to the diameter of the00:39:19
sample core, if we dwell a little more in detail00:39:23
on the design of the cutter, we00:39:26
just talked about the shape and the00:39:29
number of cutters, let’s00:39:32
also pay attention to the features of the00:39:34
inside of the cutter and00:39:36
this is not the final part 2, then00:39:39
there is something on it, let’s00:39:41
pay attention to this here with us At the stand,00:39:45
roller cutters are presented in various variations, in particular sawn cutters with a00:39:47
cut out cone, you can notice that the00:39:50
cutter is made in the form of some kind of00:39:53
metal, metal processed00:39:55
parts, chiefs, these were cone-shaped00:39:56
blanks on which there were00:39:59
special shapes, this is00:40:04
a recess, and then00:40:06
weapons are placed, which we will00:40:09
talk in more detail a little later, if00:40:11
you look into the cutter from the inside,00:40:14
it is made as follows, that00:40:16
is,00:40:17
special mounting sockets00:40:19
for bearings are machined into it, that is, those places where the00:40:21
rows of bearings will be located and00:40:24
thanks to which the cutter will rotate00:40:26
around its axis, this simple,00:40:30
uncomplicated design is made of00:40:32
metal and dotted with weapons like some kind of hedgehog,00:40:36
but we’ll talk about the weapons00:40:38
separately,00:40:41
friends, let’s now talk about the00:40:44
weapons, you could have said00:40:46
you just had a00:40:48
cutter, but that’s not entirely true, the cutter is00:40:51
not a rock-cutting element, it’s00:40:54
just a rotating part of the bit,00:40:56
it’s a cutter, the weapon is located like00:40:59
since what interacts with the rock00:41:03
about a good00:41:05
snowstorm is the angle from which there are four types of00:41:08
weapons, milled, it is called00:41:11
teeth,00:41:12
it is performed 1 in the form of cutting in the body00:41:15
of a roller cutter using the milling method,00:41:17
just these teeth themselves can be left in00:41:20
this form, that is, Stalin Stalin can00:41:23
sometimes be covered surfacing of hard00:41:24
alloy the00:41:26
next category as the main00:41:28
weapon, that is, and milled when00:41:30
we insert the teeth, note not the teeth, but the00:41:33
teeth, we insert the body of the cutter,00:41:35
we press it and make it from hard material,00:41:39
usually from tungsten carbide,00:41:41
why this is done, milled00:41:44
equipment is usually used for00:41:46
medium-sized breeds on the market, and so on the00:41:48
main weapons are used for00:41:51
hard, strong, very strong rocks, as00:41:53
well as for the destruction of rocks in which there is00:41:56
a lot of abrasive material, that is, with00:41:59
high abrasiveness, those rocks that are00:42:01
prone to wear out a lot, our current gave00:42:04
there is also the concept of00:42:06
combined weapons, which00:42:08
imply joints with each other in00:42:10
some kind of proportional00:42:12
work in a proportional number00:42:14
substitution of combinations and00:42:16
milling of weapons and the fourth type00:42:19
of weapons as or spinning weapons00:42:21
for ships, here it is located on the00:42:23
body of the chisel,00:42:24
it is necessary to protect it from wear during the course of it00:42:29
requiring weapons is applied to the paws00:42:32
usually to the Galatians and can be presented00:42:35
both in combination with an atheist and a frieze00:42:38
exactly in marketing then there is no milling,00:42:40
we carried out surfacing of hard alloys if we00:42:44
touch on the categorical division, and even then,00:42:49
in essence, the drilling is all the same,00:42:51
milled steel, but also combined00:42:54
calibrating weapons, but only at the rear, which00:42:57
means that the calibration here is divided00:42:59
into what is located along the perimeter,00:43:02
okay, so that’s what is located for00:43:04
calibration of the thermo, that is, the weapons00:43:07
that are responsible for aligning the00:43:09
Kirov column for it formed00:43:13
the weapons themselves on the tracks are00:43:16
located in the form of crowns, that is, the crowns of00:43:20
this row of weapons, the circle is highlighted00:43:23
at the top of the middle peripheral crowns00:43:27
transferred do not experience the greatest00:43:29
load because it is located on the00:43:31
very the extreme part of the bit and you, due to the00:43:34
angular00:43:36
angular velocity on it, are linear,00:43:38
the highest speed, that is, food and a00:43:40
large load act on it, and00:43:42
usually the first to fail is not the00:43:44
peripheral rims themselves, among00:43:47
themselves, the rims section 3 days or the00:43:50
inter-ring times the line, that is it’s00:43:52
just a00:43:53
separation between types of weapons, or00:43:56
in front of the tent there is a ring groove,00:43:58
it’s deeper and often these are00:44:02
all the distances between the teeth, they are needed00:44:05
primarily so that we can00:44:07
ensure the self-cleaning of the rollers, that00:44:11
is, the teeth on different faces they pass00:44:14
between each other on different cutters and00:44:17
so that I clean each other’s cutters, this is a00:44:20
factor, but also 2 so that the liquid can not00:44:23
flow and clean the cutters again from00:44:25
adhering roots of the thresholds themselves, the00:44:28
cutters themselves are divided into the sweat of the world, that is, 1 200:44:31
3 hours are numbered clockwise and 100:44:36
cutter is it is defined as the00:44:38
largest method that has a blade that00:44:41
covers the bottom of the well,00:44:43
if we talk about the parameters of the armament, then the00:44:47
armament that is milled, that in00:44:49
me has the following parameters, this is the00:44:52
top and the base, the upper and lower00:44:55
part, the distance between the teeth or00:44:59
teeth is called the pitch and also what it is00:45:05
called you then there is a deepening between00:45:08
me sounds you and also there is such a00:45:10
disease as benefits,00:45:12
that is, the reach of the weapons is how far the00:45:14
weapons protrude on those cutters for us00:45:17
than on the map, the characteristics can00:45:20
vary for different heads, the00:45:22
harder the rocks we destroy, the00:45:26
actually we need to use a00:45:29
larger step between the teeth then there is00:45:34
a lie with the harder the rocks,00:45:37
the smaller the exhalation and the smaller the step, that00:45:41
is, the more densely strewn with a rolling cutter00:45:44
the weaponry, the softer the rocks we00:45:46
destroy, the more one can take a step and the00:45:48
larger were than this is characterized, but00:45:51
the logic is that large volumes of00:45:54
destruction occur when soft ones are destroyed rocks00:45:56
plus you are not afraid that the clove will be00:45:59
cut off on its own, that is, the loads that are not so high on it are00:46:01
that if00:46:06
we introduce hard rock,00:46:07
this clove, then this one is00:46:11
more likely to be cut because a00:46:13
shoulder is formed on it,00:46:16
that is, how since, due to00:46:18
the wold of, large00:46:20
shearing loads will act precisely for these00:46:22
reasons, and for harder rocks we00:46:25
take teeth with smaller overhangs and thus00:46:30
more flat, if we talk about00:46:33
distance, that is, just about the USA00:46:36
bugs, then I will repeat here once again the00:46:39
harder rocks, the more we want00:46:43
on them and weaving the impact to take you00:46:45
yourself are interested in a tighter00:46:47
fit of the weapons if we go from the00:46:50
other side than during the turnover we00:46:52
understand that each large tooth can00:46:55
pull out more rocks to explore by00:46:57
making the distance between them larger and00:46:59
giving more liquid the possibility of00:47:02
leakage is destroyed.00:47:07
It should also be noted that the00:47:10
cutters themselves are located00:47:13
relative to each other with an offset of the axes,00:47:15
that is, if you look at the bit from above,00:47:18
then we have two, then it seems00:47:21
like three sectors at 12000:47:24
degrees, that is, if you get married, it should not00:47:27
be on these the so-called00:47:29
black ones are formed, but what we have in00:47:33
reality are they are usually displaced, that00:47:35
is, each cutter is shifted00:47:38
relative to its theoretical00:47:39
seat to some extent;00:47:42
this is done so that in the process of00:47:44
rotating the cutter bit, as I cut into the00:47:50
rock, that is, the weapon00:47:51
crashes and slightly the cutter00:47:53
slipped a little, that is, it cleared00:47:55
if you had them each sitting on its own00:47:58
axis on theoretically the deck, they simply00:48:03
roll with attacks along the fence and00:48:05
slip a little, that is, the effect is created by00:48:07
slipping the cutter, naturally, that again, the00:48:10
magnitude of this00:48:12
displacement depends on what kind of00:48:15
rocks we are working with,00:48:16
if we are working with soft rocks, then the00:48:18
displacement value is greater, that is, we have00:48:20
little strength, we want the cutter to travel00:48:23
as far as possible after each rolling00:48:25
and cut off the barbarians for00:48:28
boiled turns, but we understand that00:48:32
this will have practically no effect00:48:34
because the destruction and so00:48:36
when there is always a movement and therefore the displacement of the00:48:38
axes is00:48:39
very small, in fact they only work00:48:42
exactly like crushers, that is, they implement the00:48:44
crushing mechanism of destruction to grow and this is00:48:48
either the crushing00:48:51
mechanism of destruction or the00:48:53
crushing mechanism of destruction of00:48:56
rocks Goswami00:48:57
has, and even one more aspect is related to the00:49:02
position of the cutter for my00:49:05
notes, the shape is pink, which we want to00:49:08
get, if the cutter is recessed into the nose00:49:11
slightly inside the bottom, that is, a certain00:49:16
angle is created between the horizontals and the guide of the00:49:18
cutter, then we have a00:49:21
pointed forgotten, which seems to00:49:23
hold the roller bits in place and does00:49:25
not allow it to00:49:27
move somewhere intensively, such bits00:49:30
directed by Brady are good for drilling00:49:32
straight sections, but if we have00:49:35
a cutter, that is, but with the top of the cutter00:49:37
actually directed to the center of the bottom of the00:49:40
song inside the hole, on the contrary, and the angle00:49:45
between the guide of the cutter and the00:49:47
horizontal is almost equal,00:49:49
then on the contrary, there will be risks effectively00:49:53
and destruction of the rock along the whole00:49:55
fence and our chisel can be easily00:49:58
deflected to the side, that is, with such a chisel it will be possible to00:50:00
smoke in a strongly curved and,00:50:03
in principle, curved area, that00:50:05
is, it will be easier to control00:50:07
compared to the distance of this type, friends,00:50:11
we have figured out the general information00:50:14
and the cutter the location of the weapons about00:50:17
what kind of weapons are on the sharoshka,00:50:19
now it’s not worth paying a little00:50:23
attention to directly visual00:50:25
models and so, friends, let’s now00:50:28
talk about the weapons, the numbers of the sharoshkas, the crowns of00:50:33
good ones, and so on with illustrative00:50:36
examples, so let’s start with the00:50:38
weapons that will be00:50:40
bright followers representatives of inserted weapons,00:50:42
here we have shown here, that is, it is clearly00:50:44
visible that the teeth are related to the00:50:47
cutter teeth, that is, they introduced you into its00:50:50
body, and now, just to make it clear,00:50:53
examples of milled weapons, that is, it00:50:56
is clear that00:50:57
the weapon is machined in the body of the cutter,00:51:00
unfortunately for the chisels, I am not there examples of a00:51:03
combined00:51:04
woman, but specifically for barely the head of me00:51:07
there is a similar example, we can00:51:09
observe both milled and00:51:11
milled weapons now with a00:51:14
wall, an example of a drill head, as well as00:51:16
with inserted weapons, if we touch on the00:51:19
issues of calibrating weapons, yes, here is an00:51:22
example of a typical house, a representative00:51:25
of us is firmly glorious the main armament00:51:27
on the lapida wool00:51:29
can be exactly the same as00:51:33
it could be carbide surfacing, but00:51:35
unfortunately I don’t have an example. If00:51:38
we touch on the issues of calibration in00:51:41
relation to the mine when we talked about00:51:43
drill heads, that calibration is underway00:51:45
both from the side of the peripheral part 2000:51:50
protecting it from wear and tear of the inner00:51:52
part of the core, here you can clearly see examples of00:51:55
observing the inner part of the weapon00:51:58
located on the cutter, which will be in00:52:01
direct contact with the black one and00:52:03
act as this very00:52:06
calibrating weapon, that is, what will00:52:08
form the column. The term now00:52:11
with regards to the parameters of the weapon, let’s start with the00:52:14
milled one, that is, it’s clear that there is00:52:16
a reach, there are peaks, there are bases, but this is00:52:19
just an example of the aspect that00:52:23
we talked about, the distance, that is, the step between the00:52:27
teeth, there is between the teeth, and here there are00:52:31
practically no breakdowns, that is,00:52:32
it is clear that it gave it, especially since it00:52:35
has larger weapons and will be00:52:37
used for destruction of00:52:40
softer rocks is for harder rocks,00:52:42
but if we say so, ceteris paribus, the00:52:45
same thing is important for gave a start from00:52:48
plans with weapons to say look here00:52:51
and look here here the flight is clearly less00:52:55
than here and the distance between00:52:58
chicco minutes compared to this between00:53:01
sounds less means this board00:53:05
is designed to destroy00:53:08
harder rocks for a more complete00:53:12
use of more repeated00:53:13
impacts, we are for my plus to00:53:16
protect the teeth from chipping,00:53:19
but this chisel can be used for00:53:21
softer rocks, again, all other things being equal,00:53:25
that is, we are not puzzled now00:53:27
By categories of drillability we compare00:53:29
the road with each other, in particular, there is also an00:53:32
example of a cutter on which the cutter is located on the00:53:35
armament, quite large with a large00:53:38
reach and with a good distance between the00:53:41
teeth, again for softer rocks00:53:45
compared to, for example, this gold.00:53:48
Now as for the numbers of the cutters,00:53:50
let's decide firstly for Why do00:53:53
we need the numbers of the cutters00:53:54
correctly in order to record their00:53:57
wear, that is, we used00:53:59
the duat by taking them00:54:01
out according to the numbers of the cutters, recording the00:54:04
wear on each cutter, it is clear that in00:54:08
relation to00:54:10
cutters for galloping, there is its own00:54:14
specificity, that is, as you can see, they are00:54:16
all in fact symmetrical and you will00:54:19
already00:54:20
designate them in a unique way, that is, most00:54:22
likely he makes some kind of mark on the body00:54:25
opposite the one of interest on the cutter as00:54:27
for the three roller cutters, and here00:54:30
everything is quite simple, we are looking for the00:54:32
largest cutter in the bit, the largest in00:54:36
height, or the one that has a blade00:54:39
that could potentially cover the00:54:42
central part of the fence, that is, here is an00:54:44
example of this blade, here is an example of an elbow,00:54:46
this means the first cutters for the cutters of the Spears00:54:50
weapons plans, well, this00:54:52
cutter looks like the largest, which means00:54:54
it is the first and counting is done from it00:54:57
clockwise 1 2 3 1 2 3 1 2 300:55:04
as I told you earlier in our weapons,00:55:07
our horns are located in the form of crowns,00:55:11
that is, the crown is a line of weapons00:55:14
that is located on one00:55:16
circle,00:55:17
there are concepts of periphery, driver of the00:55:20
middle crown and at the apex peripheral00:55:23
due to the fact that there is a radius of the bit and00:55:27
due to the angular velocity, the linear00:55:29
speed is here of these teeth, it is the00:55:32
highest, it moves with the greatest impact00:55:35
of the load, shearing, that is, all these00:55:39
teeth that are located at the moving00:55:41
ends, they are subject to the greatest00:55:44
loads and can fail00:55:46
first of all, those that are located closer to00:55:50
the center, they experience lower loads,00:55:53
if you look at the cutter, then we we can00:55:56
notice a depression on it, that is, as an00:56:00
example, we have a chisel given away, and then there is some00:56:04
distance, that is, the depressions00:56:07
between the crowns, if this depression00:56:09
is small, as shown here, this is00:56:12
called the inter-crown line, that00:56:14
is, the distance that the crowns divide between00:56:16
themselves, that is, it can be00:56:19
not even marked as it is here, but00:56:22
if this recess is sharpened strongly enough,00:56:24
it means that we are00:56:30
already renaming this term into an00:56:33
annular groove, that is, an annular00:56:34
groove is needed in order for the00:56:36
liquid to circulate more efficiently and the teeth of neighboring00:56:39
cutters to enter or00:56:42
self-cleaning of the cutters is carried out if we let's look00:56:45
at this example from the Taliban,00:56:48
you can clearly see that the weapons are,00:56:51
first of all, mounted on the00:56:53
cutters themselves in a checkerboard pattern, that is, not00:56:56
on the same line, but often there00:56:57
is a constant displacement of the teeth or00:57:01
teeth, that is, this is a more effective00:57:03
effect on the face, and also if00:57:06
let's look at the crowns00:57:07
into each other, we go into the cutter, that is, they do00:57:11
not coincide along the lines, that is, this00:57:15
crown corresponds to the intercrown of 100:57:17
line, in this case, this crown00:57:20
between the front 1 line is00:57:22
given, that is, the idea is that the00:57:24
rock that will00:57:27
accumulate in these cavities so that00:57:29
self-cleaning occurs with the teeth from the00:57:32
autumn cutter, this concerns the00:57:36
wine, unfortunately, directly00:57:40
how recessed we are and the good ones or00:57:44
convex and not up, it is difficult for us in this00:57:47
case to track, that is, to evaluate the profile00:57:49
of the bit and for what type of drilling for00:57:53
directional or for vertical00:57:55
wells this chisel is more suitable00:57:58
as for the00:58:02
so-called displacement and cutters, it is also00:58:04
difficult to react here and say00:58:07
what it is in each of the individual cases00:58:09
because we cannot measure00:58:12
visually at the moment, but in fact you00:58:16
can go from 2 back from the reverse00:58:19
order, that is, roughly speaking, -what about00:58:21
these roller cutters with large00:58:25
cuttings for soft rocks, the00:58:27
displacement of the axes is maximum, which allows you00:58:30
to achieve the best shearing effect00:58:33
out of these things, the displacement of the00:58:37
axes will be minimal because it is00:58:40
intended for hard rocks and here is00:58:42
one main effect that we want00:58:45
to achieve this crushing, and of course,00:58:48
another parameter, so to speak, is the notch, that00:58:52
is, the notch is a certain depression between the00:58:55
teeth or teeth, that is, it can00:58:59
simply be present, that is, as a certain00:59:02
growth as00:59:04
two teeth simply articulated, the distance or it00:59:07
may have a certain distance which we00:59:10
will already call step, that is, in00:59:13
fact, these are all the elements of the excavation, the00:59:16
annular grooves, the interventional installments00:59:19
and other technological recesses on the00:59:21
body of the cutter,00:59:22
they are primarily needed in order to00:59:24
effectively clean the00:59:27
cutter due to the action of neighboring00:59:30
dynamic action of neighboring cutters,00:59:32
as well as due to the00:59:34
hydrodynamic effect of the drilling00:59:36
solution due to the flows that will be00:59:39
imago cutters during the process of drilling wells,00:59:42
but in general, colleagues, I think that00:59:45
all the main aspects that I00:59:47
talked about in the diagram, I tried00:59:50
to show you a visual series, so00:59:54
next in line we will00:59:56
talk about the lubrication system00:59:59
because we talked what is a01:00:01
roller cutter, does it have weapons, there is01:00:04
a bearing, the bottom of the body of the lotta,01:00:05
but any bearing cannot exist01:00:07
without lubrication and how lubrication is carried out in01:00:11
certain types of dunlops, we will01:00:13
talk to you further, friends, now we01:00:16
will talk to you about the lubrication system of01:00:18
roller bits,01:00:19
well, the logic here gives It’s quite obvious01:00:22
if you guess the rotating part that01:00:25
rotates on bearings01:00:27
1000 Roshka rotates on yours and on the01:00:30
number here, the bearing assembly must01:00:32
somehow be lubricated in order for the01:00:36
friction force to move within itself so that it does01:00:37
not overheat and the bearings last longer,01:00:39
this is quite obvious we01:00:42
concluded01:00:43
what lubrication systems are, if we01:00:46
talk about the cat, I highlight the concept of01:00:49
sealed and the activities of the green01:00:51
lubrication system, how they differ from each other,01:00:54
sealed and the01:00:57
lubrication system implies that you01:00:59
will have a relatable special channel that is01:01:02
filled with lubricant and this channel communicates01:01:06
directly with the internal cutter the01:01:08
cavity of the cutter, this channel01:01:10
ends in the upper part of the legs01:01:13
with a plug and during operation it is in harmony01:01:15
and when we create hydrostatic01:01:18
pressure with each one, the pressure presses on this plug01:01:21
through an elastic membrane and how, in01:01:24
fact, if you imagine a syringe, a syringe01:01:27
or a post squeezes out good01:01:31
this lubricant into the cavity, we are now in more detail In this01:01:34
video, let's look at two things: if01:01:37
we're talking about a non-sealed01:01:39
lubrication system, wait, but this means that there are01:01:42
no special additional01:01:44
reservoirs, and01:01:48
at home they use only01:01:50
the one that was initially01:01:52
pressed inside the cutter as a lubricant, that is,01:01:54
we are laying the01:01:57
Sharashkin presets the bearing assembly, that is,01:01:59
is with a mask, the process of operation,01:02:01
as far as it is clear that I believe in the work, the01:02:04
lubricant is produced, it burns out conditionally and01:02:10
the question arises of how01:02:12
lubrication occurs in the future 2 then usually this role is01:02:15
played by the drilling fluid, that is, let’s01:02:18
say so, it’s clear that01:02:23
after a long time the drilling fluid will begin01:02:24
to fall into the cavity of the cutter, this01:02:27
will sharply reduce the life of the bearing because01:02:31
it is simply due to the abrasive effect of01:02:34
the particles located in the solution of the pieces of the01:02:38
city of parades, it is natural that the01:02:40
bearing will fail earlier,01:02:42
but one way or another, for some period of time01:02:44
this involvement in checkers still has01:02:49
special the so-called holes are01:02:52
technological holes through which01:02:54
circulation of the drilling fluid can be carried out,01:02:57
that is, it enters01:02:59
through the post, the drill completely comes out01:03:02
through this hole, well, the idea is that01:03:05
while we still have good lubrication due01:03:10
to external01:03:11
action, and due to the fact that we have a01:03:15
cutter on all sides through these01:03:18
holes, either it holds the lubricant in the entire01:03:20
cutter, that is, it does not allow it to01:03:22
come out ahead of time, and in fact, if we talk about01:03:26
roller cutter bits,01:03:27
then we can also distribute01:03:30
sealed and unsealed01:03:32
heroes oil if we are talking about the01:03:34
drill head here, it’s just not01:03:37
sealed lubrication system why01:03:39
because time the head due to its01:03:43
design the light does not have01:03:45
massive metal parts where it would be01:03:48
possible to hide this sealed01:03:50
lubrication system and therefore the01:03:54
lubrication occurs in the carabiner Another thing I would like to01:03:57
draw your attention to friends is that the01:04:00
choice of the type of lubrication angle depends on the01:04:04
immediate bearing assembly01:04:06
that we should give and if we are01:04:08
talking about plain bearings, then it01:04:10
is logical that we simply need to01:04:12
use a sealed01:04:15
lubrication system so that for a long time01:04:17
the bearing01:04:18
has a supply source, a couple of01:04:22
sources of lubrication, if we are talking about01:04:24
rolling bearings and no less, so to speak,01:04:28
prone to heating, smoked01:04:31
in comparison with plain bearings, and01:04:33
therefore yes, you can use an01:04:34
ordinary lubrication system, so we01:04:38
have discussed in general terms how it is in01:04:40
words, and now let’s01:04:42
look at real01:04:44
examples, friends, now, using illustrative01:04:47
examples, let’s talk about the design of delicious01:04:49
roller bits, here we have on lotos, there is a01:04:53
non-sealed lubrication system from a01:04:55
sealed one, how to distinguish them from each other at the01:04:58
first stage, you can immediately distinguish this, as I01:05:00
said, the presence01:05:01
of a plug, that is, there is a plug on01:05:04
which the hydrostatic01:05:06
pressure itself acts and we squeeze the01:05:08
lubricant through the reservoir, which is located01:05:11
in the bit’s foot into the cavity of the cutter01:05:15
during the drilling process everything is carried out01:05:17
usually, this plug sticks out now it is01:05:19
recessed, this indicates that the lubricant has been squeezed out as much as possible01:05:22
from the complete01:05:25
cutter, that is, from the cavity of01:05:27
the tanks into the cavity of the cutter, this01:05:29
indicates that in fact the lubricant has01:05:33
already run out and the bit needs to be01:05:36
changed, but this indicates this then here all the01:05:38
bearings are sealed, so this01:05:43
bit is not sealed, the lubrication system is01:05:46
not here, there are no reservoirs, here we get01:05:48
oil for full lubrication of the01:05:52
bearings only due01:05:54
to this lubricating mass, which is01:05:59
located directly in the cavity of01:06:00
the cutter, which we already01:06:03
installed on the bit, which we01:06:05
placed in the cavity of the cutter, this is01:06:07
all the lubricant that we can01:06:09
use, what it looks like in cross-section,01:06:11
we will now look in more detail in the01:06:14
next part of the video, friends, now we01:06:18
will look at how the lubricant looks separately,01:06:21
this reservoir01:06:24
is removed, the tass is sealed with a01:06:26
lubrication system, how first of all it looks like in01:06:28
section of the paw, that is, we have a01:06:31
special channel where the lubricant is pressed in;01:06:34
this channel articulates with the01:06:36
entire internal part of the cutter; during the01:06:38
drilling process, the lubricant will be squeezed out01:06:41
through this channel01:06:42
directly into the cavity of the cutter; further01:06:46
speaking about how it all01:06:48
works, in principle,01:06:49
it works as follows In this way, we01:06:51
make a special hole in which01:06:54
we have a reservoir, this is what it01:06:57
looks like, it has the same central01:06:58
hole to communicate with the cavity of the01:07:00
cutter, the reservoir is placed in a01:07:03
mounting socket, then a01:07:07
special01:07:09
rubber cuff and a plug are installed in this tank, the plug01:07:13
has a through hole that on the01:07:17
side that communicates with01:07:20
and communicates with the outer and inner cavities,01:07:22
that is, the idea is that when we have a01:07:25
drilling process, the01:07:26
liquid begins to put pressure on the plug and01:07:29
through a special hole enters01:07:31
this cavity in this cavity we01:07:33
have a rubber membrane on this01:07:36
rubber membrane fluid pressure occurs01:07:38
and the effect of squeezing out the01:07:43
lubricant is created, that is, from this reservoir01:07:45
the lubricant is squeezed out into the01:07:47
cavity of the cutter, of course,01:07:51
this entire part is also pre-01:07:53
filled with lubricant, so a01:07:55
single flow of lubricant is created into the cavity of the cutter during the01:07:58
drilling process01:07:59
as we the01:08:03
lubricant is squeezed out, we have this01:08:06
rubber membrane, it straightens out and01:08:08
occupies almost the entire cavity of the track,01:08:11
that is, the moment when we01:08:14
run out of lubricant, this membrane01:08:17
covers the inside of this01:08:21
reservoir, and this means01:08:23
that, roughly speaking, after a01:08:26
while, but it has passed, it will remain without a01:08:29
lubricant can01:08:33
serve as a signal for us, well, that is, in fact,01:08:35
this situation serves as a signal01:08:38
that it is necessary to either send the bit for01:08:40
overhaul or, in principle, replace it01:08:43
replace it follow on if we look01:08:47
at the design of the gold support itself,01:08:49
here you will observe the presence of two01:08:51
bearings sliding, which is what I was talking about01:08:53
is that such01:08:54
reservoirs of you masks are usually01:08:56
used in swamps with sliding bearings,01:09:01
which are used if we have bits01:09:05
with rolling bearings, let's01:09:07
look at this separately if we talk to you01:09:10
about the design of the01:09:13
lubrication unit in the bits with it01:09:15
sealed with it principles of lubrication, the01:09:17
idea here is the following, let's01:09:20
carefully observe in the end part of the01:09:22
paw we have a direct01:09:27
hole, that is, we are not talking about the01:09:29
hole in the locking pins, we have it already01:09:32
welded and ground, but there is a01:09:34
special hole that passes01:09:37
through the axis of the software and goes into the internal01:09:40
cavity cutters, that is, it comes here01:09:43
from the other side if you01:09:46
look carefully, I hope that this will be01:09:48
visible in the video version near the01:09:52
top of the bit we have near the top of the01:09:55
cutter we have a hole,01:09:57
that is, what does this mean that01:10:01
we have you have two holes on one01:10:05
side, there is a through hole01:10:08
into the cavity of the cutter from the other side of01:10:10
the top,01:10:11
therefore it is pressed in. Initially, the01:10:14
lubricant is located between these two01:10:18
holes during the drilling process, what01:10:20
happens is that the liquid flows onto the cutter both01:10:24
on this side and on this one, that is it01:10:25
gets into the hole and a01:10:28
squeezing action is created, that is, the idea is that the01:10:32
liquid does not wash it away, but rather01:10:34
squeezes it and tries to distribute it01:10:37
throughout the internal cavity of the cutter, this01:10:40
leads to the fact that effective01:10:42
lubrication of the bearings occurs after we01:10:46
run out of the01:10:47
finality of the mask that was01:10:50
initially developed its role begins to be played by the01:10:53
drilling fluid and it01:10:54
begins to circulate through these holes. On the one01:10:57
hand, it is clear that due to01:11:01
abrasive wear it will lead to rapid01:11:03
failure of the bearings, but I still01:11:05
think it01:11:07
will play some positive role because, after all, large01:11:09
particles of mud are clearly ours won't hit, the01:11:12
presence of two01:11:15
holes again won't allow01:11:17
these holes to get clogged just like that because01:11:19
circulation will be created and01:11:21
additional cooling will be created in the internal01:11:24
cavity of the cutter, that is, it will01:11:25
create, so to speak, the effect of reducing01:11:28
the temperature, the bearings will not overheat too much01:11:30
here, approximately01:11:33
such a diagram, I’ll show you again what it01:11:36
looks like, let’s01:11:38
take a closer look at just the01:11:41
passage hole, which starts from the end01:11:44
part of the paw through the hearts of the background passage, and this is what the01:11:47
hole looks like01:11:50
through which the liquid is given on the other01:11:53
side and from the side of the top of the cutter here01:11:58
in fact, this is how the01:12:00
directly01:12:02
sealed and non-sealed01:12:05
lubrication system of roller bits is designed01:12:09
[music]01:12:15
this is its flushing system let's01:12:18
start according to tradition passed there are01:12:22
several methods of flushing several01:12:25
designs will help their units there is a01:12:30
large hole through which01:12:31
flushing is carried out01:12:34
side flushing various holes are made in the01:12:38
nato body01:12:39
made along the periphery back and when01:12:43
there is a hole directed in the opposite01:12:46
direction in order to develop and01:12:49
combined, that is, one that01:12:51
implies combination, or for example a01:12:53
side reverse01:12:55
for example when the central letter although01:12:59
I have not seen such cases like this or01:13:01
a draw we can they talked about what01:13:04
exists purely theoretically,01:13:06
such methods of flushing, if we talk about01:13:09
the side, it is still classified as01:13:11
ordinary when just liquid01:13:13
flows from the holes and the so-01:13:16
called monitor with a hydra monitor01:13:19
would be meant when a01:13:22
transparent one is inserted into the hole in some way01:13:24
secured from help, but I’m back to the video01:13:29
with payment for it has a narrowing cross-01:13:32
section due to which the flow of01:13:35
liquid01:13:36
emanating from it is accelerated and in fact it can be01:13:40
built in this way in the body of the house01:13:42
using threads using a screw type01:13:46
locking type,01:13:49
these methods using a locking ring01:13:52
or their combinations with a locking screw01:13:54
using glue but with the help of glue,01:13:57
my respected colleagues told me that01:13:59
abroad, due to the technology, they use a01:14:01
fairly strong, good glue that01:14:04
quite holds the walking chair in place for one hundred square01:14:06
meters, if the head says an accident,01:14:10
then here everything is much more01:14:13
prosaic, firstly, the type of washing01:14:16
is found only on the side of the center,01:14:19
this is practically the center in all01:14:21
cases there is already included because01:14:23
there is, we mean central01:14:25
flushing, which means that in fact the liquid is being injected, the01:14:30
core column is hidden, which means you will lead to its01:14:32
disassembly, which is not at all not wanted, not01:14:35
only the red constant contact with the01:14:38
drilling fluid is also not very good, it is01:14:41
mainly used side flushing and01:14:43
it’s white, I appreciate it, you see, either when01:14:46
holes are drilled around the perimeter01:14:48
right in the body 2, or when the rollers of the01:14:51
side holes make a gap between01:14:55
just the paws accidents on the island01:14:58
to achieve, he said a cylindrical one01:15:00
is taken around which the01:15:03
gate collapses, there are these same holes we are01:15:06
now this Let’s look more and more clearly,01:15:08
and of course we must say about the hydra01:15:12
monitor attachments in relation to01:15:14
Borelli heads and I have not heard the use of01:15:17
so-called hips.01:15:19
therefore, what is that is, and now we will01:15:22
sequentially analyze what01:15:25
the walking holes can look like on01:15:27
different types,01:15:29
let's go, so friends, now let's clearly01:15:32
look at what the flushing system looks like for01:15:35
lots of different types, let's start with the01:15:38
central type of flushing, that is, I01:15:40
hope that there will be more or more in the video01:15:42
less clearly visible here01:15:45
we have a centrally single hole if it01:15:48
forms between itself this is when we01:15:51
create the01:15:52
paws before welding, that is, they form01:15:55
this hole, it is often processed, it01:15:57
is formed and we have liquid flowing from it, which01:16:00
turns out to clean the01:16:03
central part of the fence and the cutter01:16:06
here we have a bit01:16:09
with side flushing, that is, they have01:16:11
3 side flushing holes,01:16:16
you can observe them, that is, this is01:16:18
done as follows:01:16:21
body 2 is formed, then in fact01:16:23
these holes are drilled in it and the actual01:16:26
liquid behind the holes is directed to the01:16:28
roller world space and to the01:16:31
periphery here in the main principle is the01:16:34
following if we talk about hydra01:16:38
monetary flushing then here on this01:16:40
let's look at it01:16:41
well it is shown that is right away while01:16:43
the prime here is the side hole without hydra01:16:46
monitor me from the nozzle there you can01:16:48
evaluate the installed nozzle that is01:16:52
the nozzle has a smaller smaller diameter01:16:58
passage hole so that the01:17:01
liquid is accelerated, that is, the idea of the tetra01:17:04
monitor effect is to01:17:05
accelerate the flow of liquid that will01:17:08
hit and during the battle it will be more effective to clean the01:17:11
roller cutters directly, but earlier this was also01:17:14
associated with the possibility of01:17:16
better destruction of the stern parades, but01:17:18
this is quite a controversial point,01:17:21
actually this is an example of exactly 301:17:24
variations, unfortunately, a combined01:17:27
bit with a combined with01:17:30
backwashing is located01:17:31
directly outside the classroom and01:17:34
we will now move on to it. Right now you01:17:38
are seeing exactly the same bits with an01:17:40
example of combined washing and with an01:17:43
example of backwashing, that is, when01:17:45
several types of washing are combined and01:17:48
so look, we are clearly observing a powerful01:17:52
side-type hole, that is, it is01:17:54
located on the periphery, but if01:17:56
you look carefully, that is, the01:17:59
clay railing is now a chamber, then in this case01:18:01
we do not observe any hole,01:18:04
but we see that the flushing unit itself01:18:07
is directed to the other side, I will01:18:09
now turn the bit over and I’ll show you what01:18:11
it looks like, dragging, that is, the idea is01:18:14
that there is a combination of side flushing01:18:16
back side flushing it is clear what is01:18:20
needed to clean the cutters and clean01:18:22
the bottom and the01:18:23
destroyed rocks back01:18:25
flushing it directs the flow of liquid01:18:27
part of the liquid flow upward towards the01:18:31
wellhead itself and its01:18:33
task is to remove the plate gland, do01:18:37
not even remove it, they allow it01:18:39
to form above the gold gland, that01:18:41
is, the adhesion of a clayey mass so that it does not01:18:43
happen on the next take, you01:18:47
will see an inverted golden one in01:18:49
reality, an assessment of what the01:18:51
flushing hole looks like for01:18:53
backwashing colleagues,01:18:55
here in this take you see what it01:18:57
looks like the backwash hole, that01:19:01
is, it is not directed towards the bottom,01:19:03
on the contrary to the direction of the mouth, and this01:19:06
hole for backwash is needed01:19:09
in order to wash away and prevent the01:19:12
formation of over the hungry gland, that01:19:14
is, that the clayey rock mass was not formed here,01:19:15
that is, roughly01:19:18
speaking, in 101:19:20
in one part along the periphery of the bit will be a01:19:23
steam implementation, is this possible on a01:19:25
singing clay mass? Well, it is clear that01:19:28
this01:19:30
method of flushing will be carried out on01:19:32
large outflows of large diameter which01:19:35
will work in the upper intervals01:19:37
of the well, that is, where exactly a01:19:39
large number of01:19:42
oil seals can be formed on tool, that is, when the01:19:47
rock is being drilled quite intensively, high mechanical01:19:48
speed, a large concentration of cuttings will01:19:51
howl and it will be like a01:19:55
kind of catalyzing condition in order for it to01:19:57
form socially, in these01:19:59
cases it is logical to use bits01:20:02
with this type of flushing if we are talking01:20:05
about drilling deeper intervals,01:20:07
the strength of hard rocks, well,01:20:09
most likely it will be simply01:20:11
ineffective and will not require a board,01:20:14
in this view you can just see the01:20:17
appearance of hydra monitor attachments and now we01:20:20
will discuss what type they are and how01:20:22
they can be attached, well, here’s an example01:20:25
we see a number of hydra monitor01:20:28
attachments, here in the central part01:20:30
we have a key for screwing in01:20:33
hydra monitor attachments, as I01:20:35
said a little earlier, there are several01:20:39
methods for securing them in the bit body and01:20:42
one of the most common is01:20:45
using a threaded connection, that01:20:47
is, here we have just01:20:48
shown are hydra monitor nozzles with01:20:51
these same threaded connections, with01:20:53
similar keys they are installed,01:20:56
that is, of a profiled type, usually01:20:59
hydra monitor nozzles are accompanied01:21:03
by similar rubber rings sealed with them01:21:05
in order to ensure better01:21:08
tightness so that there is no danger of01:21:10
erosion of the same threaded01:21:12
connection01:21:13
Another option for attaching the hydra01:21:16
monitor attachment is using a01:21:19
locking ring, that is, here01:21:21
we show just an example of01:21:23
fastening this very hydra01:21:26
monitor attachment in the datum using a locking01:21:29
ring, that is, the idea is that the01:21:32
hydra monitor attachment01:21:34
and spacer ring are recessed into the body of the bit locking, a01:21:36
special groove is installed and does not01:21:38
allow our hips to fall out; monitor01:21:41
attachments also exist a method of fastening01:21:44
with glue,01:21:45
but I can’t tell you anything more about this method01:21:48
because at the01:21:51
moment I don’t have enough materials;01:21:54
and of course it’s worth noting another01:21:57
aspect: what kind of material?01:22:01
the material is made of hydra01:22:03
monitor nozzles, taking into account the fact that they01:22:05
are half-shaped, that is, the01:22:07
speed of the liquid in them increases very much,01:22:09
which means that the abrasive01:22:11
effect of the liquid on them is quite01:22:13
high, therefore this requires01:22:17
increased strength of these same hydra01:22:19
monitor nozzles so that they do not01:22:20
fail, therefore they are01:22:23
usually they are made either from a hard alloy01:22:25
or from metal-ceramics, it’s simpler,01:22:29
or this or that, and in a separate01:22:32
take now I’ll show you another type of01:22:35
fastening the01:22:36
hydra monitor attachment using a01:22:39
locking screw so that we already have a01:22:41
complete selection, this is exactly this01:22:46
additional principle of fastening the hydra01:22:49
monetary attachment Another one that we01:22:51
need to consider is the use of a01:22:56
locking screw locking device that tightens the hydra01:22:59
monetary sediment and does not allow it to01:23:00
fall out of the bit body. On01:23:02
some of them, special recesses are made around the perimeter01:23:04
where there01:23:08
are01:23:10
holes for the screw, that is, we01:23:12
install it in the bit body with the01:23:15
sealing elements, the nozzle itself01:23:17
and with the help of this locking01:23:20
element, we pull it through the hole and01:23:23
seal the nozzle so that it01:23:25
is firmly fixed in the body of the bit.01:23:28
In fact, colleagues, we have01:23:30
considered various options for attaching01:23:33
hydra monitor nozzles in the body01:23:36
of the bit, I do01:23:37
not rule out that there are more01:23:39
some possible alternative designs,01:23:41
if I have information on them,01:23:44
I will promptly tell you about them,01:23:47
of course, friends. On this,01:23:50
our lecture on a good parade-breaking01:23:53
instrument can be considered complete,01:23:56
we have discussed its entire01:23:58
design, what are the elements of what01:24:01
designs, what are the different variations of01:24:03
execution for different drilling conditions01:24:05
and so on and so on and so on it was a01:24:09
very long lecture, I hope, but for you01:24:12
it was very informative and01:24:14
interesting, I hope that you were not01:24:16
distracted, that you received some01:24:19
new information about perhaps if you tell me01:24:21
you can tell us something,01:24:23
be sure to share it, and of course01:24:26
it is important to note that01:24:29
both the destruction of the tool is not the last word, our task with01:24:32
you will also talk about the diamond01:24:35
tool both la post tool01:24:38
doctor tsn01:24:39
abyr design and the final stage01:24:42
after all this will be a lecture01:24:45
dedicated to how choosing the right01:24:48
rock-cutting tool in whose01:24:50
favor choosing a01:24:52
natal cutter was dangerous, how to choose it correctly01:24:55
according to the category of hardness,01:24:57
playfulness of rocks, and of course there will be01:25:00
separate more practical01:25:02
lectures that will be useful to those who are01:25:04
interested in correctly writing the wear01:25:07
of a bit01:25:08
and how to process it correctly what01:25:10
the building needs in order for the note to01:25:13
work effectively did not serve us for a long time and faithfully01:25:16
so friends with you there was a drilling rig without01:25:19
andronic letters and there was a lecture about a01:25:21
good breed of a01:25:22
good sounding instrumentDescription:
Епихин Антон Владимирович Буровой Ликбез Шарошечный породоразрушающий инструмент - 00:00:01 - вступление - 00:02:22 - классификация шарошечного ПРИ (сплошной забой, отбор керна, расширение) - 00:04:10 - корпус долота - 00:07:55 - демонстрация типов шарошечного ПРИ - 00:08:45 - демонстрация типов и конструкции корпуса шарошечного ПРИ - 00:11:25 - демонстрация цапфы долота - 00:14:45 - опорный узел шарошки - 00:19:35 - принцип крепления шарошки на цапфе - 00:21:00 - демонстрация и разбор конструкции опорного узла шарошки на долоте - 00:25:40 - крепление шарошки на бурильной головке - 00:27:05 - определение типа долота по вращению шарошки - 00:29:10 - шарошки (количество и форма) - 00:34:30 - демонстрация типов шарошек у долот - 00:35:45 - принцип работы одношарошечного долота - 00:37:40- демонстрация типов шарошек у бурильных головок - 00:39:20- конструкция шарошки - 00:40:42 - вооружение шарошечного ПРИ - 00:43:15 - венцы вооружения - 00:44:30 - номера шарошек - 00:44:45 - параметры вооружения - 00:47:10 - смещение осей шарошек - 00:49:00 - профиль долота - 00:50:25 - демонстрация вооружения шарошечного ПРИ - 01:00:20 - смазка опорного узла - 01:04:45 - демонстрация смазочной системы шарошечных ПРИ - 01:06:18 - конструкция долота с герметизированной системой смазки -01:09:10- принцип смазки долота с открытой опорой - 01:12:12 - система промывки шарошечных долот - 01:15:30 - демонстрация систем промывки шарошечных долот - 01:17:38 - долото с комбинированной и обратной промывкой -01:20:15 - гидромониторные насадки и их крепление - 01:23:50 - заключение Год: 2020
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