CN114739497A - Drilling cuttings measurement while drilling device - Google Patents
Drilling cuttings measurement while drilling device Download PDFInfo
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- CN114739497A CN114739497A CN202210409630.9A CN202210409630A CN114739497A CN 114739497 A CN114739497 A CN 114739497A CN 202210409630 A CN202210409630 A CN 202210409630A CN 114739497 A CN114739497 A CN 114739497A
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- box body
- receiving box
- slag
- slag receiving
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- 238000005553 drilling Methods 0.000 title claims abstract description 95
- 238000005520 cutting process Methods 0.000 title claims abstract description 52
- 238000005259 measurement Methods 0.000 title claims abstract description 11
- 239000002893 slag Substances 0.000 claims abstract description 108
- 238000005303 weighing Methods 0.000 claims abstract description 21
- 238000010276 construction Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 8
- 239000011435 rock Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V7/00—Measuring gravitational fields or waves; Gravimetric prospecting or detecting
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
The invention relates to a drill cutting measurement while drilling device, and belongs to the technical field of drilling. The device comprises a slag receiving box body, a lower drainage filter screen, an upper drainage filter screen, an opening and closing device, a control valve and a weighing device. The drilling cuttings while-drilling measuring device introduces drilling cuttings, water and other slag bodies discharged in the drilling construction process into the slag receiving box body through a drilling orifice gas-slag separator or other drainage devices; the slag receiving box body discharges most of water or other liquid in the slag body through the lower drainage filter screen and the upper drainage filter screen; the opening and closing device opens the slag receiving box body from the bottom according to the instruction of the control valve and removes slag in the box body; the metering device measures the weight of slag in the slag receiving box body in real time, measures the amount of drilling cuttings generated in drilling construction per meter by combining with a control valve instruction, and realizes the measurement of the drilling cuttings while drilling. The method can be widely applied to prediction of coal rock dynamic disasters such as mine rock burst, coal and gas outburst and the like, and is also an important support for coal rock geological drilling technology.
Description
Technical Field
The invention belongs to the technical field of drilling, and relates to a drill cuttings while-drilling measuring device.
Background
The drilling cuttings quantity measurement is an important index for predicting the coal rock dynamic disaster under the mine. At present, underground drilling cutting quantity is measured mainly through weight measuring instruments such as a spring scale and an electronic scale, and after the drilling cutting quantity is collected by a pocket and a container, manual weighing is carried out. The weight of the drilling cuttings obtained by manual weighing is influenced by the manual operation speed when the drilling cuttings are collected, continuous measurement cannot be realized during data recording, and the collection of the drilling cuttings in deep holes cannot be met, the drilling cuttings with the weight of about 10 meters are generally measured, and even a plurality of mines generally measure the drilling cuttings data, so that the drilling cuttings index does not play a real coal-rock dynamic disaster prediction role. The drilling cuttings quantity measurement-while-drilling device adopts the methods of automatic collection of the drilling cuttings quantity and automatic weighing of the drilling cuttings quantity, can effectively improve the efficiency of collecting and recording the drilling cuttings quantity, can record the drilling cuttings quantity of long distance drilling, and has extremely important effects on the phenomena of geological structure detection, stress concentration, coal bed occurrence abnormity and the like through the drilling cuttings quantity.
Disclosure of Invention
In view of the above, the present invention provides a device for measuring drill cuttings while drilling.
In order to achieve the purpose, the invention provides the following technical scheme:
a drilling cutting while-drilling measuring device comprises a slag receiving box body, a lower drainage filter screen, an upper drainage filter screen, an opening and closing device, a control valve and a weighing device;
an upper drainage filter screen is arranged at the top of the slag receiving box body, and a lower drainage filter screen is arranged at the bottom of the slag receiving box body;
the bottom of the slag receiving box body is also provided with an opening and closing device for realizing opening and closing;
the bottom of the slag receiving box body is also provided with a weighing sensor used for weighing the increased weight of the object in the slag receiving box body;
the control valve is connected with a cylinder on the weighing device through an air duct, after the air is communicated, the direction of the control valve is rotated, and the air pushes the cylinder to stretch and retract, so that the bottom of the device is opened and closed;
when drilling construction is carried out, drilling cuttings removed in the drilling construction process are introduced into the slag receiving box body through an external drainage device;
the slag receiving box body discharges most of water or other liquid in the slag body through the lower drainage filter screen and the upper drainage filter screen;
the opening and closing device opens the slag receiving box body from the bottom according to the instruction of the control valve and removes slag in the box body;
the weighing device measures the weight of the slag in the slag receiving box body in real time, measures the quantity of drilling cuttings generated in drilling construction per meter by combining with a control valve instruction, and realizes the measurement of the drilling cuttings while drilling.
Optionally, the slag receiving box body is of a closed three-dimensional structure consisting of a plurality of transverse columns 2, upright columns 3, a sealing plate I4 and a sealing plate II 5;
the top of the slag receiving box body is provided with a feeding plate 1, and drilling cuttings removed in the drilling construction process are introduced into the slag receiving box body through an external drainage device;
the volume V of the slag receiving box body is 2 pi R2And R is the radius of the drill hole, and the volume of the slag receiving box body is larger than the standard slag output when each drill rod drills.
Optionally, the three-dimensional structure is a cube, a cuboid, a cone or a cylinder.
Optionally, the distance between the lower drainage filter screen and the bottom of the slag receiving box body is 50mm, and the aperture of the lower drainage filter screen is 1 mm;
the distance between the upper drainage filter screen and the bottom of the slag receiving box body is 5mm, and the aperture of the upper drainage filter screen is 3 mm.
Optionally, the opening and closing device comprises a first cylinder connecting piece 6, a second cylinder connecting piece 7 and a connecting piece 8 which are in threaded connection;
the bearing mounting piece 9 and the bearing 10 are connected through threads;
the cylinder connecting piece III 12 and the cylinder 22 are connected through threads;
the transverse column 2 is welded with a joint mounting piece 11, a protective cover 17, a seal plate mounting piece 19 and a joint mounting piece 24;
the bottom of the slag receiving box body comprises a mounting seat 13, a sensor mounting piece 14, a single-point sensor 15 and a cushion block 16 which are connected through threads;
the feeding plate 1 is connected with a sliding plate, and the sliding plate 18 and the hopper assembly 20 are opened and closed through the expansion and contraction of the air cylinder 22;
the air cylinder 22 is connected with the air pipe connector 21 and the air cylinder mounting piece 23 through threads;
the measuring device is connected with a mounting box 25, a weighing instrument 26 is arranged on the mounting box 25, and the mounting box 25 is connected with a transmission cable through an air duct.
Optionally, the control valve comprises a manual valve 27 and a compressed air filter 28, which are connected through a gas-guide pipe;
the control valve adopts compressed air as power to manually control;
and the control valve controls the opening and closing device through the telescopic operation of the control cylinder, the control valve is operated once after one drill rod is constructed, the opening and closing device of the slag receiving box body is opened, the opening and closing device of the slag receiving box body is closed again after 3-5 seconds, and the drilling slag body during the construction of the next drill rod is prepared to be collected.
Optionally, the metering device is positioned at the bottom of the slag receiving box body, the metering device measures the quality of slag in the slag receiving box body in real time, and measurement while drilling of drill cuttings slag is realized according to the opening and closing conditions of the opening and closing device;
when the weighing device weighs that the quantity of the drill cuttings is reduced from less than 1Kg to less than 0.3Kg, a drill rod is judged to be drilled, and the drilling depth is determined by multiplying the quantity of the drill rod by the length of the drill rod;
or when the opening and closing device completes the opening and closing actions once, the drilling of one drill rod is judged, and the drilling depth is determined by multiplying the number of the drill rods by the length of the drill rod
The invention has the beneficial effects that: the method can be widely applied to prediction of coal rock dynamic disasters such as mine rock burst, coal and gas outburst and the like, and is also an important support for coal rock geological drilling technology.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic connection diagram of the present invention;
FIG. 2 is a schematic structural view of a slag receiving tank according to the present invention.
Reference numerals: 1-feed plate, 2-cross-post, 3-column, 4-seal plate one, 5-seal plate two, 6-cylinder connector one, 7-cylinder connector two, 8-connector, 9-bearing mount, 10-bearing, 11-joint mount, 12-cylinder connector three, 13-mount, 14-sensor mount, 15-single-point sensor, 16-pad, 17-shield, 18-slide, 19-seal plate mount, 20-hopper assembly, 21-air pipe joint, 22-cylinder, 23-cylinder mount, 24-joint mount, 25-mounting box, 26-weighing instrument, 27-manual valve, 28-compressed air filter.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and the specific meaning of the terms described above will be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1 to 2, a device for measuring drill cuttings while drilling is shown. The device comprises a slag receiving box body, a lower drainage filter screen, an upper drainage filter screen, an opening and closing device, a control valve and a weighing device.
The slag receiving box body is of a closed three-dimensional structure consisting of a plurality of transverse columns 2, upright columns 3, a sealing plate I4 and a sealing plate II 5;
the top of the slag receiving box body is provided with a feeding plate 1, and drilling cuttings discharged in the drilling construction process are introduced into the slag receiving box body through an external drainage device;
the opening and closing device comprises a first cylinder connecting piece 6, a second cylinder connecting piece 7 and a connecting piece 8 which are in threaded connection;
the bearing further comprises a bearing mounting part 9 and a bearing 10 which are connected through threads;
the cylinder connecting piece III 12 and the cylinder 22 are connected through threads;
the transverse column 2 is welded with a joint mounting piece 11, a protective cover 17, a seal plate mounting piece 19 and a joint mounting piece 24;
the bottom of the slag receiving box body comprises a mounting seat 13, a sensor mounting piece 14, a single-point sensor 15 and a cushion block 16 which are connected through threads;
the feeding plate 1 is connected with a sliding plate, and the sliding plate 18 and the hopper assembly 20 are opened and closed through the expansion and contraction of a cylinder 22;
the air cylinder 22 is connected with the air pipe connector 21 and the air cylinder mounting piece 23 through threads;
the measuring device is connected with a mounting box 25, a weighing instrument 26 is arranged on the mounting box 25, and the mounting box 25 is connected with a transmission cable through an air duct.
The control valve comprises a manual valve 27 and a compressed air filter 28 which are connected through an air duct;
during drilling construction, slag bodies such as drilling cuttings, water and the like removed in the drilling construction process are introduced into the slag receiving box body through a drilling orifice gas-slag separator or other drainage devices; the slag receiving box body discharges most of water or other liquid in the slag body through the lower drainage filter screen and the upper drainage filter screen; the opening and closing device opens the slag receiving box body from the bottom according to the instruction of the control valve and removes slag in the box body; the metering device meters the weight of the slag in the slag receiving box body in real time, measures the quantity of drilling cuttings generated in drilling construction per meter by combining with a control valve instruction, and realizes the measurement of the drilling cuttings while drilling.
The slag receiving box body is positioned at the central position of the drilling cutting while-drilling measuring device, a slag inlet is arranged above the slag receiving box body, drilling cuttings, water and other drilling slag bodies can enter the slag receiving box body from the slag inlet along a guide device, the shape of the slag inlet can be square, round and the like, and the area of the inlet is generally 90-300 mm; the shape of the slag receiving box can be various, and the shape of a cube, a cuboid, a cone, a cylinder and the like can be various. The volume of the slag receiving box body is related to the diameter of a drill hole, the formula V is 2 pi R2, (R is the radius of the drill hole), and the volume of the slag receiving box body is slightly larger than the standard slag discharge amount when each drill rod drills.
The lower drainage filter screen is positioned at the peripheral edge of the bottom of the side surface of the slag receiving box body and is 50mm away from the bottom, the filter screen can filter part of water or liquid in the slag body, and the aperture of the filter screen hole is generally 1 mm;
the upper drainage filter screen is positioned at the peripheral edge of the top of the side surface of the slag receiving box body and is 5mm away from the top, the filter screen can filter overflowing part of water or liquid, and the aperture of the filter screen is generally 3 mm;
the opening and closing device is positioned at the bottom of the slag receiving box body, the slag receiving box body can be integrally opened, all slag bodies in the box body are removed, and the opening and closing device is operated by the control valve through controlling the extension of the hydraulic rod.
The control valve is arranged outside the slag receiving box body and can be separately arranged with the slag receiving box body so as to place the device in a safe area, two types of electric and pneumatic control can be adopted, the control valve operates the opening and closing device through the telescopic operation of the control cylinder, the opening and closing device of the slag receiving box body is opened once a drill rod is constructed, the opening and closing device of the slag receiving box body is closed again after 3-5 seconds, and the drilling slag body during the construction of the next drill rod is prepared to be collected.
The metering device is located at the bottom of the slag receiving box body, can determine the quality of slag in the slag receiving box body in real time, and can realize measurement while drilling of drilling cuttings according to the opening and closing conditions of the opening and closing device.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (7)
1. A device for measuring drill cuttings while drilling is characterized in that: the device comprises a slag receiving box body, a lower drainage filter screen, an upper drainage filter screen, an opening and closing device, a control valve and a weighing device;
an upper drainage filter screen is arranged at the top of the slag receiving box body, and a lower drainage filter screen is arranged at the bottom of the slag receiving box body;
the bottom of the slag receiving box body is also provided with an opening and closing device for realizing opening and closing;
the bottom of the slag receiving box body is also provided with a weighing sensor for weighing the increased weight of objects in the slag receiving box body;
the control valve is connected with a cylinder on the weighing device through an air duct, after the air is communicated, the direction of the control valve is rotated, and the air pushes the cylinder to stretch and retract, so that the bottom of the device is opened and closed;
when drilling construction is carried out, drilling cuttings removed in the drilling construction process are introduced into the slag receiving box body through an external drainage device;
the slag receiving box body discharges most of water or other liquid in the slag body through the lower drainage filter screen and the upper drainage filter screen;
the opening and closing device opens the slag receiving box body from the bottom according to the instruction of the control valve and removes slag in the box body;
the weighing device measures the weight of the slag in the slag receiving box body in real time, measures the quantity of drilling cuttings generated in drilling construction per meter by combining with a control valve instruction, and realizes the measurement of the drilling cuttings while drilling.
2. The drill cuttings while drilling determination apparatus of claim 1, wherein: the slag receiving box body is of a closed three-dimensional structure consisting of a plurality of transverse columns (2), upright columns (3), a sealing plate I (4) and a sealing plate II (5);
the top of the slag receiving box body is provided with a feeding plate (1), and drilling cuttings discharged in the drilling construction process are introduced into the slag receiving box body through an external drainage device;
the volume V of the slag receiving box body is 2 pi R2And R is the radius of the drill hole, and the volume of the slag receiving box body is larger than the standard slag output when each drill rod drills.
3. The drill cuttings while drilling determination apparatus of claim 1, wherein: the three-dimensional structure is a cube, a cuboid, a cone or a cylinder.
4. The drill cuttings while drilling determination apparatus of claim 1, wherein: the distance between the lower drainage filter screen and the bottom of the slag receiving box body is 50mm, and the aperture of the lower drainage filter screen is 1 mm;
the distance between the upper drainage filter screen and the bottom of the slag receiving box body is 5mm, and the aperture of the upper drainage filter screen is 3 mm.
5. The drill cuttings while drilling determination apparatus of claim 1, wherein: the opening and closing device comprises a first cylinder connecting piece (6), a second cylinder connecting piece (7) and a connecting piece (8) which are in threaded connection;
the bearing mounting part (9) and the bearing (10) are connected through threads;
the cylinder connecting piece III (12) and the cylinder (22) are connected through threads;
the transverse column (2) is welded with a joint mounting piece (11), a protective cover (17), a seal plate mounting piece (19) and a joint mounting piece (24);
the bottom of the slag receiving box body comprises a mounting seat (13), a sensor mounting piece (14), a single-point sensor (15) and a cushion block (16) which are connected through threads;
the feeding plate (1) is connected with a sliding plate, and the sliding plate (18) and the hopper assembly (20) are opened and closed through the expansion and contraction of a cylinder (22);
the air cylinder (22) is connected with the air pipe joint (21) and the air cylinder mounting piece (23) through threads;
the measuring device is connected with a mounting box (25), a weighing instrument (26) is arranged on the mounting box (25), and the mounting box (25) is connected with the measuring device through an air duct and a transmission cable.
6. The drill cuttings while drilling determination apparatus of claim 1, wherein: the control valve comprises a manual valve (27) and a compressed air filter (28) which are connected through an air duct;
the control valve adopts compressed air as power to manually control;
and the control valve is operated once by controlling the telescopic operation opening and closing device of the air cylinder every time one drill rod is constructed, the opening and closing device of the slag receiving box body is opened, the opening and closing device of the slag receiving box body is closed again after 3-5 seconds, and the drilling slag body during the construction of the next drill rod is prepared to be collected.
7. The drill cuttings while drilling determination apparatus of claim 1, wherein: the metering device is positioned at the bottom of the slag receiving box body, measures the quality of slag in the slag receiving box body in real time, and realizes the measurement while drilling of drilling cuttings slag according to the opening and closing conditions of the opening and closing device;
when the weighing device weighs that the drilling cuttings amount is reduced to be below 0.3Kg from no less than 1Kg, the drilling is judged to be drilled by one drill rod, and the drilling depth is determined by multiplying the number of the drill rods by the length of the drill rods;
or when the opening and closing device completes the opening and closing actions once, the drilling of one drill rod is judged, and the drilling depth is determined by multiplying the number of the drill rods by the length of the drill rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210409630.9A CN114739497A (en) | 2022-04-19 | 2022-04-19 | Drilling cuttings measurement while drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210409630.9A CN114739497A (en) | 2022-04-19 | 2022-04-19 | Drilling cuttings measurement while drilling device |
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| Publication Number | Publication Date |
|---|---|
| CN114739497A true CN114739497A (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210409630.9A Pending CN114739497A (en) | 2022-04-19 | 2022-04-19 | Drilling cuttings measurement while drilling device |
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| Country | Link |
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| CN (1) | CN114739497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839753A (en) * | 2023-02-16 | 2023-03-24 | 山西潞安集团余吾煤业有限责任公司 | Portable weighing type drillings-receiving pulverized coal device |
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| CN102839964A (en) * | 2012-08-08 | 2012-12-26 | 中国矿业大学 | Coal and gas burst risk parameter drilling and predicting integrated method |
| KR20160000585A (en) * | 2014-06-25 | 2016-01-05 | 대우조선해양 주식회사 | Sewage treatment system of drillship and sewage treatment method of the same |
| CN105545296A (en) * | 2015-12-29 | 2016-05-04 | 中国矿业大学 | Wet-type drilling cuttings method test system and test method for coal mine dynamic disasters |
| CN109085087A (en) * | 2018-08-17 | 2018-12-25 | 中煤科工集团重庆研究院有限公司 | Full-automatic device and method for quickly measuring gas desorption index and drilling cuttings amount of drilling cuttings |
| CN112145151A (en) * | 2020-09-27 | 2020-12-29 | 中国矿业大学 | Dynamic impact risk detection and evaluation method based on response parameters while drilling |
-
2022
- 2022-04-19 CN CN202210409630.9A patent/CN114739497A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839964A (en) * | 2012-08-08 | 2012-12-26 | 中国矿业大学 | Coal and gas burst risk parameter drilling and predicting integrated method |
| KR20160000585A (en) * | 2014-06-25 | 2016-01-05 | 대우조선해양 주식회사 | Sewage treatment system of drillship and sewage treatment method of the same |
| CN105545296A (en) * | 2015-12-29 | 2016-05-04 | 中国矿业大学 | Wet-type drilling cuttings method test system and test method for coal mine dynamic disasters |
| CN109085087A (en) * | 2018-08-17 | 2018-12-25 | 中煤科工集团重庆研究院有限公司 | Full-automatic device and method for quickly measuring gas desorption index and drilling cuttings amount of drilling cuttings |
| CN112145151A (en) * | 2020-09-27 | 2020-12-29 | 中国矿业大学 | Dynamic impact risk detection and evaluation method based on response parameters while drilling |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839753A (en) * | 2023-02-16 | 2023-03-24 | 山西潞安集团余吾煤业有限责任公司 | Portable weighing type drillings-receiving pulverized coal device |
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