CN102031931A - Self-rotating jet drilling device - Google Patents
Self-rotating jet drilling device Download PDFInfo
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- CN102031931A CN102031931A CN 201010555717 CN201010555717A CN102031931A CN 102031931 A CN102031931 A CN 102031931A CN 201010555717 CN201010555717 CN 201010555717 CN 201010555717 A CN201010555717 A CN 201010555717A CN 102031931 A CN102031931 A CN 102031931A
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- jet drilling
- jet
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- 238000005553 drilling Methods 0.000 title claims abstract description 63
- 239000007921 spray Substances 0.000 claims description 27
- 238000005520 cutting process Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003245 coal Substances 0.000 abstract description 33
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
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- Nozzles (AREA)
Abstract
The invention relates to a self-rotating jet drilling device, which comprises a cylindrical shell, wherein the back end of the shell is provided with a tubular connecting part; a rotating part is rotatably arranged in the shell; the outer diameter of the rotating part is corresponding to the inner diameter of the shell; the front end of the rotating part is provided with a cylindrical extending section along the axial direction; the extending section extends out of the front end of the shell and is fixedly connected to a sprayer along the axial direction; the periphery of the rotating part is provided with a plurality of helical grooves; an axial through hole is arranged on the rotating part; blind holes are arranged in the sprayer from back to forth; the blind holes are communicated with the through hole; and the surface of the front end of the sprayer is provided with a plurality of jet holes connected to the blind holes and is also fixed with a cutter. The device can increase the drilling efficiency and the aperture quality, can form a jet hole unloading strip having a certain of diameter and depth on a coal layer by the double action of the cut drilling and jetting, can efficiently increase the gas well capacity on the coal layer and can increase the gas recovery ratio of the coal layer.
Description
Technical Field
The invention relates to a drilling device for coal bed gas exploitation, in particular to a self-rotating jet drilling device.
Background
The development of the coal bed gas is to excavate the coal bed gas well, and the gas production quantity has a direct relation with the gas production area. The existing mining mode is to mine coal bed gas after drilling, and the gas production area is only the circumferential area of a drilling hole. In order to increase the gas production area, a hole (also called a window) needs to be formed in a casing of the coal-bed gas well, and then high-pressure water or a sand mixing liquid (which can be silt, quartz sand, ceramsite or other types of grinding materials) is sprayed to the stratum through a spray head connected with a continuous oil pipe, so that a perforation aperture with a certain diameter and depth is formed, the stress release of the coal bed is realized, and the air permeability of the coal bed and the gas recovery ratio are improved.
At present, the following methods are mainly used for jet drilling: (1) hydraulic perforation: fixing a spray head connected with an aboveground pump truck through a continuous oil pipe at a windowed window of a sleeve, pumping high-pressure liquid by the pump truck to be sprayed out through a nozzle of the spray head, and crushing rock on the outer side of the sleeve or forming a certain aperture in a coal bed by utilizing the hydraulic rock breaking effect of high-pressure jet flow; however, in the hydraulic perforation mode, the nozzle cannot move and extend radially under the well, the radial distance of the jetted holes is short, the sizes and the shapes of the holes are irregular, and the expected purposes of increasing production and increasing efficiency cannot be achieved after jet drilling. (2) hydraulic deep penetration perforation: firstly, a punching mechanism is controlled by a punching control valve to pierce a sleeve in a hydraulic drive mechanical mode to form a nozzle inlet and outlet channel, then a jet feed system is controlled by a jet control valve to feed a flexible nozzle with a nozzle into a stratum along the channel in a radial direction, high-speed jet flow sprayed out of the nozzle drills through the stratum, the flexible nozzle feeds and jets at the same time to form a radial horizontal hole with a certain aperture and a certain depth; the method has high success rate of jet perforation, and the perforation depth and the aperture are improved, but the method is mainly applied to perforation of low-porosity, low-permeability and low-abundance oil and gas reservoirs at present. In addition, the two injection drilling modes are used for drilling by injecting high-pressure liquid through the spray head or the spray pipe by utilizing the rock breaking function and the quasi-static pressure function of the high-pressure water jet, so that the drilling efficiency is low, and the pore diameter quality is poor.
In view of the above, the inventor of the present invention has proposed a self-rotating jet drilling apparatus based on many years of related design and manufacturing experience to overcome the drawbacks of the prior art.
Disclosure of Invention
The invention aims to provide a self-rotating jet drilling device which can improve drilling efficiency and aperture quality, and through the dual functions of cutting drilling and jet perforation, a perforation hole pressure relief strip with a certain diameter and depth is formed on a coal seam, so that the stress release of the coal seam is realized, the contact area of a shaft and the coal seam is increased, the productivity of a coal-bed gas well is effectively increased, and the recovery ratio of coal-bed gas is improved.
The object of the invention is achieved by a self-rotating jet drilling device, comprising a cylindrical housing provided with a tubular connection at its rear end; a rotary body is rotatably arranged in the shell, the outer diameter of the rotary body corresponds to the inner diameter of the shell, a cylindrical extension section is arranged at the front end of the rotary body along the axial direction of the rotary body, and the extension section extends out of the front end of the shell and is fixedly connected with a spray head in the axial direction; the peripheral surface of the rotating body is provided with a plurality of spiral grooves, and the rotating body is provided with an axially through hole; a blind hole is formed in the spray head from back to front, and the blind hole is communicated with the through hole of the rotating body; the front end surface of the spray head is provided with a plurality of spray holes communicated with the blind holes; a cutting knife is also fixedly arranged on the surface of the front end of the spray head.
In a preferred embodiment of the present invention, the rear end of the rotating body and the inner side of the rear end of the housing form an accommodating space.
In a preferred embodiment of the present invention, a bearing is disposed between the outer peripheral surface of the extending section of the rotating body and the inner wall of the housing.
In a preferred embodiment of the present invention, the outer ring of the bearing is fixed to the inner wall of the housing by a bearing seat.
In a preferred embodiment of the present invention, the rear end of the bearing seat is provided with a sealing ring located between the outer circumferential surface of the extension section and the inner wall of the housing.
In a preferred embodiment of the present invention, a plurality of through holes are circumferentially formed on the sidewall of the housing between the seal ring and the front end of the rotating body.
In a preferred embodiment of the present invention, the bearing is a bearing with a seal ring.
In a preferred embodiment of the present invention, a housing end cover is disposed at the front end of the housing.
From the above, after the high-pressure liquid is conveyed to the accommodating space by the high-pressure hose, a part of the high-pressure liquid enters the blind hole of the spray head through the through hole and is then ejected out through the plurality of ejection holes communicated with the blind hole; the other part of the high-pressure liquid enters the spiral grooves, the energy of the part of the high-pressure liquid is converted into torque to be output, the rotating body is driven to rotate, and then the spray head with the cutting knife connected with the rotating body is driven to rotate. So, when utilizing above-mentioned autogyration injection drilling device to drill the coal seam, the device can improve drilling efficiency and aperture quality, through cutting drilling and injection perforation dual function, forms the perforation punchhole release strip of certain diameter and degree of depth on the coal seam, realizes coal seam stress release, increases pit shaft and coal seam area of contact, effectively increases coal bed gas well productivity, improves the coal bed gas recovery ratio.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
FIG. 1: is a structural schematic diagram of the self-rotating jet drilling device.
FIG. 2: is a structural schematic diagram of the rotating body in the invention.
FIG. 3: the structure of the nozzle with the cutting knife is shown schematically.
FIG. 4: the self-rotating jet drilling device is a schematic diagram for carrying out jet drilling of the horizontal well.
FIG. 5: is a schematic diagram of the vertical well jet drilling using the self-rotating jet drilling apparatus of the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, 2 and 3, the present invention provides a self-rotating jet drilling device 100, wherein the self-rotating jet drilling device 100 includes a cylindrical housing 1, a tubular connection portion 11 is provided at the rear end of the housing 1 for connecting to a high-pressure hose in a jet drilling tool string; a rotating body 2 is rotatably arranged in the shell 1, the outer diameter of the rotating body 2 is the same as the inner diameter of the shell 1 (forming a movable fit, so that the rotating body 2 can freely rotate in the shell 1), a cylindrical extension section 21 is arranged at the front end of the rotating body 2 along the axial direction, and the extension section 21 extends out of the front end of the shell 1 and is axially fixedly connected with a spray head 3; a plurality of spiral grooves 22 are formed in the outer peripheral surface of the rotating body 2, and through holes 23 which are axially through are formed in the rotating body 2; a blind hole 31 is formed in the spray head 3 from back to front, and the blind hole 31 is communicated with the through hole 23 of the rotating body 2; the front end surface of the spray head 3 is provided with a plurality of spray holes 32 communicated with the blind holes 31; a cutting knife 33 is also fixedly arranged on the surface of the front end of the spray head 3, and the cutting knife 33 can be embedded on the spray head or welded on the spray head; in the present embodiment, the rear end of the rotating body 2 and the inner side of the rear end of the housing 1 form an accommodating space 12.
After the high-pressure liquid is conveyed to the accommodating space 12 by the high-pressure hose, a part of the high-pressure liquid enters the blind hole 31 of the spray head 3 through the through hole 23 and is then sprayed out through a plurality of spray holes 32 communicated with the blind hole 31; the other part of the high-pressure liquid enters the spiral grooves 22, the energy of the part of the high-pressure liquid is converted into torque to be output, the rotating body is driven to rotate, and then the spray head with the cutting knife connected with the rotating body is driven to rotate. So, when utilizing above-mentioned autogyration injection drilling device to drill the coal seam, the device can improve drilling efficiency and aperture quality, through cutting drilling and injection perforation dual function, forms the perforation punchhole release strip of certain diameter and degree of depth on the coal seam, realizes coal seam stress release, increases pit shaft and coal seam area of contact, effectively increases coal bed gas well productivity, improves the coal bed gas recovery ratio.
Further, as shown in fig. 1, in the present embodiment, in order to avoid friction between the rotating body and the inner wall of the casing, thereby increasing the life of the rotating body, a bearing 4 is provided between the outer peripheral surface of the extension 21 of the rotating body 2 and the inner wall of the casing 1, and the bearing 4 is a bearing with a seal ring.
The outer ring of the bearing 4 is fixed on the inner wall of the shell 1 by a bearing seat 41; the rear end of the bearing seat 41 is provided with a sealing baffle ring 411 positioned between the outer peripheral surface of the extension section 21 and the inner wall of the shell 1, so that liquid flowing through the plurality of spiral grooves 22 can be prevented from entering the bearing 4, and the normal use of the bearing is influenced; further, in the present embodiment, a plurality of through holes 13 are circumferentially formed in the sidewall of the housing 1 between the seal ring 411 and the front end of the rotary body 2, and the liquid flowing through the plurality of spiral grooves 22 can be discharged out of the housing through the plurality of through holes 13.
In order to prevent other foreign matters from entering the housing and affecting the rotation of the bearing and the rotating body, in the present embodiment, a housing cover 14 is provided at the front end of the housing 1.
As shown in fig. 4 and 5, the self-rotating jet drilling device is used for carrying out horizontal well jet drilling and vertical well jet drilling. Before drilling, a plurality of windows 51 are opened on the casing 5 by using a windowing tool, the position of the jet drilling is determined according to the depth and the inclination angle of the windows on the casing 5 from the ground, and jet perforation preparation on the ground is made; then, a jet drilling tool string is sent into the casing 5, the jet drilling tool string consists of a continuous oil pipe 6, a high-pressure hose 7 and a self-rotating jet drilling device 100, the self-rotating jet drilling device 100 is sent to a specified position, extends out of the window 51 under the guidance of a direction carrier, and the working angle is adjusted, namely, the jet drilling tool string enters the side drilling jet position; pumping high-pressure liquid (high-pressure water) to an underground self-rotating jet drilling device 100 by controlling the pressure of a ground pump truck, carrying out rotary cutting and hydraulic jet perforation by a nozzle with a cutter, and forming a perforation hole pressure relief strip 8 with a certain diameter and depth on a coal seam by double actions of cutting perforation and jet perforation until jet drilling is finished; and finally, recovering the continuous oil pipe 6, the high-pressure hose 7 and the self-rotating jet drilling device 100 into the casing 5, and carrying out the next working procedure.
The following provides a specific example of the pressure relief coal bed gas production by jet drilling using the self-rotating jet drilling device of the present invention to further explain the effect of the device.
After the casing is windowed, use
Carrying out jet drilling pressure relief by using a coiled tubing, a high-pressure hose with the outer diameter of 28mm and a self-rotating jet drilling device with the outer diameter of 40mm, constructing eight hydraulic jet pressure relief holes in total, and accumulating jet drilling footage 1450 m; by using the self-rotating jet drilling device, the gas production efficiency is improved, the QN01 wells are continuously drained and produced for 18 months, the recovery ratio of the coal bed gas reaches 40%, and the gas content of each ton of coal in a single well control range is controlled from the initial 13.0m3The t is reduced to 7.8m3T, the requirement of gas content for realizing safe coal mining is met (namely the gas content per ton of coal is lower than 8.0 m)3/t)。
The equipment is applied to lateral hydraulic jet drilling of five coal bed gas horizontal wells, so that the efficiency and the aperture quality of sand-blasting perforation are improved, the effective release of the productivity of the coal bed gas well is promoted, and the average gas production rate of a single well is improved by 28 percent.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (8)
1. A self-rotating jet drilling device characterized by: the self-rotating jet drilling device comprises a cylindrical shell, wherein a tubular connecting part is arranged at the rear end of the shell; a rotary body is rotatably arranged in the shell, the outer diameter of the rotary body corresponds to the inner diameter of the shell, a cylindrical extension section is arranged at the front end of the rotary body along the axial direction of the rotary body, and the extension section extends out of the front end of the shell and is fixedly connected with a spray head in the axial direction; the peripheral surface of the rotating body is provided with a plurality of spiral grooves, and the rotating body is provided with an axially through hole; a blind hole is formed in the spray head from back to front, and the blind hole is communicated with the through hole of the rotating body; the front end surface of the spray head is provided with a plurality of spray holes communicated with the blind holes; a cutting knife is also fixedly arranged on the surface of the front end of the spray head.
2. A self-rotating jet drilling apparatus according to claim 1, wherein: the rear end of the rotating body and the inner side of the rear end of the shell form an accommodating space.
3. A self-rotating jet drilling apparatus according to claim 1, wherein: and a bearing is arranged between the peripheral surface of the extension section of the rotating body and the inner wall of the shell.
4. A self-rotating jet drilling apparatus according to claim 3, wherein: the outer ring of the bearing is fixed on the inner wall of the shell through a bearing seat.
5. A self-rotating jet drilling apparatus according to claim 4, wherein: and a sealing baffle ring positioned between the peripheral surface of the extension section and the inner wall of the shell is arranged at the rear end of the bearing seat.
6. A self-rotating jet drilling apparatus according to claim 5, wherein: and a plurality of through holes are formed in the circumferential direction on the side wall of the shell between the sealing baffle ring and the front end of the rotating body.
7. A self-rotating jet drilling apparatus according to claim 3 or 5, wherein: the bearing is a bearing with a sealing ring.
8. A self-rotating jet drilling apparatus according to claim 1, wherein: the front end of the shell is provided with a shell end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555717A CN102031931B (en) | 2010-11-23 | 2010-11-23 | Self-rotating jet drilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010555717A CN102031931B (en) | 2010-11-23 | 2010-11-23 | Self-rotating jet drilling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102031931A true CN102031931A (en) | 2011-04-27 |
| CN102031931B CN102031931B (en) | 2012-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010555717A Active CN102031931B (en) | 2010-11-23 | 2010-11-23 | Self-rotating jet drilling device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104989333A (en) * | 2015-06-17 | 2015-10-21 | 成都高普石油工程技术有限公司 | Novel spray head structure for improving oil well yield |
| CN104989277A (en) * | 2015-07-22 | 2015-10-21 | 成都来宝石油设备有限公司 | Spray nozzle for improving target oil reservoir pore permeability parameter |
| CN105422016A (en) * | 2015-12-25 | 2016-03-23 | 辽宁工程技术大学 | Borehole cleaning system and cleaning method |
| CN105507867A (en) * | 2014-09-24 | 2016-04-20 | 中国石油化工股份有限公司 | Apparatus and method for producing borehole fissures |
| CN106894794A (en) * | 2015-12-21 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of device for forming runner in the earth formation |
| CN106894764A (en) * | 2015-12-18 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of drill bit |
| CN110359855A (en) * | 2019-07-11 | 2019-10-22 | 中煤科工集团西安研究院有限公司 | Spinning flow jet flow drill spray head with anti-stall device |
| WO2020103393A1 (en) * | 2018-11-21 | 2020-05-28 | 重庆地质矿产研究院 | Bottom sealing type pulse hydraulic fracturing tool of coiled tubing dragging belt and method |
| CN113153156A (en) * | 2021-05-21 | 2021-07-23 | 河南理工大学 | Hydraulic combined mechanical hole repairing device and method |
| CN113653478A (en) * | 2021-09-10 | 2021-11-16 | 中国石油大学(北京) | Perforating device, testing system and testing method for hydraulic fracturing simulation experiment |
| CN114482941A (en) * | 2022-01-20 | 2022-05-13 | 中煤科工集团西安研究院有限公司 | Angle-controllable directional perforation and lancing integrated device and application method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2181562Y (en) * | 1993-07-20 | 1994-11-02 | 大庆石油管理局钻井三公司 | Water jet nozzle for bit |
| CN1204378A (en) * | 1995-12-08 | 1999-01-06 | 昆士兰大学 | Fluid drilling system |
| CN1297098A (en) * | 2000-12-16 | 2001-05-30 | 太原理工大学 | High-pressure water jet controllable spin drill bit |
| US6439313B1 (en) * | 2000-09-20 | 2002-08-27 | Schlumberger Technology Corporation | Downhole machining of well completion equipment |
| CN2567334Y (en) * | 2002-05-17 | 2003-08-20 | 天津市景宝科技有限公司 | High-pressure jet drilling tool |
| CN201851095U (en) * | 2010-11-23 | 2011-06-01 | 中矿瑞杰(北京)科技有限公司 | Self-rotation jet drilling device |
-
2010
- 2010-11-23 CN CN201010555717A patent/CN102031931B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2181562Y (en) * | 1993-07-20 | 1994-11-02 | 大庆石油管理局钻井三公司 | Water jet nozzle for bit |
| CN1204378A (en) * | 1995-12-08 | 1999-01-06 | 昆士兰大学 | Fluid drilling system |
| US6439313B1 (en) * | 2000-09-20 | 2002-08-27 | Schlumberger Technology Corporation | Downhole machining of well completion equipment |
| CN1297098A (en) * | 2000-12-16 | 2001-05-30 | 太原理工大学 | High-pressure water jet controllable spin drill bit |
| CN2567334Y (en) * | 2002-05-17 | 2003-08-20 | 天津市景宝科技有限公司 | High-pressure jet drilling tool |
| CN201851095U (en) * | 2010-11-23 | 2011-06-01 | 中矿瑞杰(北京)科技有限公司 | Self-rotation jet drilling device |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105507867A (en) * | 2014-09-24 | 2016-04-20 | 中国石油化工股份有限公司 | Apparatus and method for producing borehole fissures |
| CN105507867B (en) * | 2014-09-24 | 2018-07-13 | 中国石油化工股份有限公司 | A kind of device and method for generating wellbore crack |
| CN104989333A (en) * | 2015-06-17 | 2015-10-21 | 成都高普石油工程技术有限公司 | Novel spray head structure for improving oil well yield |
| CN104989277A (en) * | 2015-07-22 | 2015-10-21 | 成都来宝石油设备有限公司 | Spray nozzle for improving target oil reservoir pore permeability parameter |
| CN106894764A (en) * | 2015-12-18 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of drill bit |
| CN106894764B (en) * | 2015-12-18 | 2019-01-01 | 中国石油化工股份有限公司 | A kind of drill bit |
| CN106894794A (en) * | 2015-12-21 | 2017-06-27 | 中国石油化工股份有限公司 | A kind of device for forming runner in the earth formation |
| CN105422016A (en) * | 2015-12-25 | 2016-03-23 | 辽宁工程技术大学 | Borehole cleaning system and cleaning method |
| US11098566B2 (en) | 2018-11-21 | 2021-08-24 | Chongqing Institute Of Geology And Mineral Resources | Pulse hydraulic fracturing tool and method for coiled tubing dragging with bottom packer |
| WO2020103393A1 (en) * | 2018-11-21 | 2020-05-28 | 重庆地质矿产研究院 | Bottom sealing type pulse hydraulic fracturing tool of coiled tubing dragging belt and method |
| CN110359855B (en) * | 2019-07-11 | 2021-01-19 | 中煤科工集团西安研究院有限公司 | Nozzle with anti-stall device for self-rotating jet drill bit |
| CN110359855A (en) * | 2019-07-11 | 2019-10-22 | 中煤科工集团西安研究院有限公司 | Spinning flow jet flow drill spray head with anti-stall device |
| CN113153156A (en) * | 2021-05-21 | 2021-07-23 | 河南理工大学 | Hydraulic combined mechanical hole repairing device and method |
| CN113653478A (en) * | 2021-09-10 | 2021-11-16 | 中国石油大学(北京) | Perforating device, testing system and testing method for hydraulic fracturing simulation experiment |
| CN114482941A (en) * | 2022-01-20 | 2022-05-13 | 中煤科工集团西安研究院有限公司 | Angle-controllable directional perforation and lancing integrated device and application method |
| CN114482941B (en) * | 2022-01-20 | 2024-02-27 | 中煤科工集团西安研究院有限公司 | Angle-controllable directional perforation and lancing integrated device and application method |
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