CN118669078B - Downhole casing cutting device and use method thereof - Google Patents
Downhole casing cutting device and use method thereof Download PDFInfo
- Publication number
- CN118669078B CN118669078B CN202411158890.9A CN202411158890A CN118669078B CN 118669078 B CN118669078 B CN 118669078B CN 202411158890 A CN202411158890 A CN 202411158890A CN 118669078 B CN118669078 B CN 118669078B
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- bevel gear
- cutting blade
- rotating shaft
- tube body
- pipe body
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- 238000005520 cutting process Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 36
- 230000008569 process Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 description 7
- 238000003825 pressing Methods 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/08—Cutting or deforming pipes to control fluid flow
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Turning (AREA)
Abstract
The invention discloses a downhole casing pipe slotting device and a use method thereof, which belong to the technical field of petroleum downhole operation equipment, and comprise a first pipe body and a second pipe body, wherein the second pipe body is arranged on the first pipe body, and further comprises: the bearing frame is rotationally connected with a first rotating shaft rotationally connected to the first pipe body and used for bearing devices; the cutting blade is fixedly connected with a second rotating shaft which is rotatably connected to the bearing frame and is used for cutting the sleeve; the transmission mechanism is arranged in the first pipe body and used for driving the cutting blade to rotate; the feeding mechanism is arranged in the second pipe body and used for pushing the bearing frame to swing so as to enable the cutting blade to extend out of or retract into the first pipe body; the invention introduces a brushless motor driving transmission mechanism with the petroleum underground height Wen Zhiliu, transmits torque to the cutter, and can stably cut the underground sleeve under the action of a stable and reliable feeding mechanism.
Description
Technical Field
The invention belongs to the technical field of petroleum underground operation equipment, and particularly relates to an underground sleeve slotting device and a use method thereof.
Background
In the drilling process of mineral resources such as petroleum, natural gas and the like, slit cutting service of a well section is very important to realizing pressure equalization of a pipeline, ensuring fluid circulation in the pipeline and improving the yield of a sand screen oil well. Various casing types, grades, and potentially extreme downhole conditions may require a large number of cuts, so it is highly desirable to provide a slotting device that can operate stably under extreme downhole conditions.
Therefore, the invention provides an electric slotting tool for a downhole casing, which transmits torque to a cutter through a brushless motor driving transmission mechanism with the petroleum downhole height Wen Zhiliu introduced, and can realize stable cutting under the action of a stable and reliable feeding mechanism, thereby solving the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a downhole casing pipe slotting device and a use method thereof, which solve the problems.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a sleeve pipe slotting device in pit, includes first body and second body, the second body is installed on first body, still includes:
the bearing frame is rotationally connected with a first rotating shaft rotationally connected to the first pipe body and used for bearing devices;
the cutting blade is fixedly connected with a second rotating shaft which is rotatably connected to the bearing frame and is used for cutting the sleeve;
The transmission mechanism is arranged in the first pipe body and used for driving the cutting blade to rotate;
The feeding mechanism is arranged in the second pipe body and used for pushing the bearing frame to swing so as to enable the cutting blade to extend out of or retract into the first pipe body;
The transmission mechanism comprises a first motor, a first speed reducer, a first bevel gear, a second bevel gear and a third bevel gear, wherein the first motor and the first speed reducer are all installed in a first pipe body, the first speed reducer is connected with the output end of the first motor, the first bevel gear is fixedly connected with the output end of the first speed reducer, the second bevel gear is fixedly connected on a first rotating shaft and meshed with the first bevel gear, the first bevel gear is sleeved on the first rotating shaft and fixedly connected with the first rotating shaft, the first bevel gear is meshed with the second bevel gear which is rotationally connected on a bearing frame, and the second bevel gear is meshed with the third bevel gear which is fixedly connected on the second rotating shaft.
Based on the technical scheme, the invention also provides the following optional technical schemes:
The technical scheme is as follows: the feeding mechanism comprises a triangular block, a base body, a first pin shaft, a second pin shaft, a fish eye bearing, a screw nut telescopic rod, a trapezoid screw rod, a bearing group, a second speed reducer and a second motor, wherein the pushing shaft is rotationally connected to the top end of the triangular block, the pushing shaft is in sliding fit with a pushing sliding chute formed in a bearing frame, one bottom corner end of the triangular block is hinged to the second pin shaft arranged in a second pipe body, the other bottom corner end of the triangular block is hinged to the base body, the base body is hinged to the fish eye bearing through the first pin shaft, the fish eye bearing is fixedly connected to the screw nut telescopic rod, the screw nut telescopic rod is in sliding fit with a limiting sliding chute formed in the second pipe body, the trapezoid screw rod is rotationally connected to the second pipe body through the bearing group, the trapezoid screw rod is fixedly connected with the output end of the second speed reducer, and the second speed reducer is connected with the output end of the second motor arranged in the second pipe body.
The technical scheme is as follows: the flexible protective covers are detachably arranged on the bearing frame and distributed on two sides of the cutting blade.
The technical scheme is as follows: and a rotary seal for sealing is sleeved on the first conical gear.
The application method of the underground casing pipe electric slotting device comprises the following steps:
S1, a related technician lowers a first pipe body and a second pipe body to the side of a sleeve, and at the moment, a limiting device arranged on the second pipe body is started to limit the first pipe body and the second pipe body on the sleeve;
s2, starting a first motor, driving a first speed reducer to drive a first bevel gear to rotate, driving a first rotating shaft to rotate by a second bevel gear meshed with the first bevel gear by the first bevel gear, driving a second bevel gear to rotate by the first bevel gear, driving a second rotating shaft to rotate by a third bevel gear meshed with the second bevel gear by the second bevel gear, and further driving a cutting blade fixedly arranged on the second rotating shaft to synchronously rotate by the second rotating shaft;
S3, starting a second motor to drive a second speed reducer to drive a trapezoidal screw rod to rotate, wherein the trapezoidal screw rod drives a screw nut telescopic rod in threaded connection with the trapezoidal screw rod to drive a fisheye bearing to perform linear motion, the fisheye bearing drives a seat body to drive a triangular block to swing by taking a second pin shaft as an axis, and at the moment, the triangular block drives a bearing frame to rotate around the first rotating shaft by utilizing a pushing shaft, namely a cutting blade driven to rotate by a driving assembly is driven to extend out of the first pipe body to perform pressing cutting treatment on a sleeve;
s4, detecting the rotating speed of the cutting blade and the pressure given to the bearing frame by the pushing shaft through the detecting component in the process of cutting the sleeve by the cutting blade, acquiring rotating speed information and pressure information, transmitting the rotating speed information and the pressure information to the external controller, correspondingly comparing the acquired rotating speed information and pressure information with a preset rotating speed threshold value and a preset pressure threshold value, if the rotating speed information is lower than the rotating speed threshold value or the pressure information is higher than the pressure threshold value, indicating that the cutting blade is cut and encounters resistance, starting the second motor to enable the cutting blade to reset to check the cutting blade, and if the quality of the cutting blade is qualified, lowering the cutting blade to the cutting position again, and starting the second motor again to push the cutting blade to cut the sleeve and ensure that the pressure information is within the pressure threshold value;
s5, when the pressure information and the rotation speed information are both within the corresponding rotation speed threshold value and the corresponding pressure threshold value, the pressure information and the rotation speed information are led into a resistance model after dimensionless processing, a resistance coefficient is output, if the resistance coefficient exceeds a preset resistance threshold value, the rotation speed of the cutting blade is reduced or the pressure of the pushing shaft on the bearing frame is reduced until the resistance coefficient is within the resistance threshold value, and the resistance model is expressed as:
wherein, Represents the coefficient of resistance and,The information of the rotational speed is indicated,The pressure information is represented by a set of values,The rotation speed influencing factor is indicated,Representing the pressure influence factor,Represents the material influence factor of the sleeve,，，。
The technical scheme is as follows: the detection assembly comprises a rotating speed sensor and a pressure sensor, wherein the rotating speed sensor is arranged on the cutting blade, the pressure sensor is arranged on the pressing plate, the pressing plate is embedded and arranged in the pushing chute, and the pressure sensor is fixedly connected with the inner wall of the pushing chute.
The invention provides a downhole casing pipe slotting device and a use method thereof, which have the following beneficial effects compared with the prior art:
The related technical staff lowers the first pipe body and the second pipe body to the side of the sleeve, at the moment, a limiting device arranged on the second pipe body is started to limit the first pipe body and the second pipe body on the sleeve, at the moment, a first motor is started, the first motor drives a first speed reducer to drive a first bevel gear to rotate, the first bevel gear drives a first rotating shaft to rotate through a second bevel gear meshed with the first bevel gear, the first rotating shaft drives a first bevel gear to rotate, the second bevel gear drives a second rotating shaft to rotate through a third bevel gear meshed with the second bevel gear, the second rotating shaft further drives a cutting blade fixedly arranged on the second rotating shaft to synchronously rotate, at the moment, a second motor is started to drive a second speed reducer to drive a trapezoidal screw to rotate, the trapezoidal screw is driven by a screw nut telescopic rod in threaded connection with the trapezoidal screw nut to drive a fisheye bearing to linearly move, a triangular block is driven by the fisheye bearing to swing by taking a second pin shaft, at the moment, and the triangular block drives a bearing frame to rotate around the first rotating shaft, namely, the cutting blade driven by a driving component to rotate extends out of the first pipe body to press the sleeve;
the invention can evaluate the cutting state of the cutter, prevent the cutter from being stretched out to cause the damage of the sleeve or the feeding mechanism and the transmission mechanism, and further increase the sleeve cutting efficiency.
Drawings
FIG. 1 is a cross-sectional view of a downhole casing slotting device according to the present invention taken along section A-A.
FIG. 2 is a cross-sectional view of the downhole casing slotting device of the present invention taken along section B-B.
Fig. 3 is an enlarged schematic view of the structure of the portion a in fig. 1 according to the present invention.
Fig. 4 is an enlarged schematic view of the B-section structure of fig. 2 according to the present invention.
Reference numerals annotate: 1. a first tube body; 2. a second tube body; 3. a first motor; 4. a first speed reducer; 5. rotating and sealing; 6. a first bevel gear; 7. a first rotating shaft; 8. a second bevel gear; 9. a carrier; 10. a first helical gear; 11. a second helical gear; 12. a second rotating shaft; 13. a third bevel gear; 14. a cutting blade; 15. a flexible shield; 16. triangular blocks; 17. a base; 18. a first pin; 19. a second speed reducer; 20. a second motor; 21. a second pin; 22. a fish-eye bearing; 23. a screw nut telescopic rod; 24. a trapezoidal screw; 25. and a bearing group.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Referring to fig. 1 to fig. 4, in an embodiment of the present invention, a downhole casing slotting device includes a first pipe body 1 and a second pipe body 2, where the second pipe body 2 is installed on the first pipe body 1, and further includes:
the bearing frame 9 is rotationally connected with the first rotating shaft 7 rotationally connected to the first pipe body 1 and is used for bearing devices;
The cutting blade is fixedly connected with a second rotating shaft 12 which is rotatably connected to the bearing frame 9 and is used for cutting the sleeve;
the transmission mechanism is arranged in the first pipe body 1 and is used for driving the cutting blade to rotate;
the feeding mechanism is arranged in the second pipe body 2 and is used for pushing the bearing frame 9 to swing so as to enable the cutting blade to extend out of or retract into the first pipe body 1;
The transmission mechanism comprises a first motor 3, a first speed reducer 4, a first conical gear 6, a second conical gear 8, a first bevel gear 10, a second bevel gear 11 and a third bevel gear 13, wherein the first motor 3 and the first speed reducer 4 are both arranged in a first pipe body 1, the first speed reducer 4 is connected with the output end of the first motor 3, the first conical gear 6 is fixedly connected with the output end of the first speed reducer 4, the second conical gear 8 is fixedly connected on a first rotating shaft 7 and meshed with the first conical gear 6, the first bevel gear 10 is sleeved on the first rotating shaft 7 and fixedly connected with the first rotating shaft 7, the first bevel gear 10 is meshed with the second bevel gear 11 which is rotatably connected on a bearing frame 9, the second bevel gear 11 is meshed with the third bevel gear 13 which is fixedly connected on a second rotating shaft 12, the first motor 3 drives the first conical gear 6 to rotate, the first bevel gear 6 is fixedly connected with the output end of the first speed reducer 4, the second bevel gear 8 is fixedly connected with the first rotating shaft 7 and meshed with the second bevel gear 14, the second bevel gear 12 is further rotatably driven by the first bevel gear 10, and the second bevel gear 12 is rotatably driven by the second bevel gear 12 which is rotatably arranged on the second rotating shaft 12 and is further rotatably driven by the second bevel gear 12;
The feeding mechanism comprises a triangular block 16, a base 17, a first pin shaft 18, the triangular block 16, a second pin shaft 21, a fisheye bearing 22, a screw nut telescopic rod 23, a trapezoidal screw 24, a bearing group 25, a second speed reducer 19 and a second motor 20, wherein a pushing shaft (not marked in the figure) is rotationally connected to the top end of the triangular block 16, the pushing shaft is in sliding fit with a pushing sliding groove formed in the bearing frame 9, one bottom corner end of the triangular block 16 is hinged with the second pin shaft 21 arranged in the second pipe body 2, the other bottom corner end of the triangular block 16 is hinged with the base 17, the base 17 is hinged with the fisheye bearing 22 through the first pin shaft 18, the fisheye bearing 22 is fixedly connected to the screw nut telescopic rod 23, the screw nut telescopic rod 23 is in sliding fit with a limiting sliding groove formed in the second pipe body 2, the screw nut telescopic rod 23 is in threaded connection with the trapezoidal screw 24, the trapezoidal screw 24 is rotationally connected to the second pipe body 25 through the bearing group 25, the other bottom corner end of the triangular block 16 is hinged with the second pin shaft 21, namely the triangular block 19 is driven by the triangular block 16 to rotate, namely, the triangular block 19 is driven by the second pin shaft 19 to rotate around the second pipe body 2, namely, the first speed reducer 19 is driven by the triangular block 19, and the second reducer 19 is driven to rotate, namely, the triangular block 19 is driven by the triangular block 2, and the second reducer 19 is driven to rotate, namely, the cutter is driven by the second reducer 19, and the cutter is in the rolling sleeve, and the cutter is driven by the second cutter, the cutter is in the rolling rod is in the rolling box, and the rolling box, the rolling box is in the rolling box, the rolling box is.
Preferably, the carrier 9 is detachably provided with flexible protection covers 15, and the flexible protection covers 15 are distributed on two sides of the cutting blade 14, so that chips or large particle foreign matters cannot enter the cutting assembly to damage the driving assembly during the cutting process.
Preferably, the first motor 3 is a high-temperature brushless dc motor.
Preferably, the first bevel gear 6 is sleeved with a rotary seal 5 for sealing.
In the embodiment of the invention, a related technician lowers the first tube body 1 and the second tube body 2 to the side of the sleeve, at the moment, a limiting device arranged on the second tube body 2 is started to limit the first tube body 1 and the second tube body 2 on the sleeve, at the moment, the first motor 3 is started, the first motor 3 drives the first speed reducer 4 to drive the first bevel gear 6 to rotate, the first bevel gear 6 drives the first rotating shaft 7 to rotate through the second bevel gear 8 meshed with the first bevel gear 6, the first rotating shaft 7 drives the first bevel gear 10 to drive the second bevel gear 11 to rotate, the second bevel gear 11 drives the second rotating shaft 12 to rotate through the third bevel gear 13 meshed with the second bevel gear 11, at the moment, the second rotating shaft 12 further drives the cutting blade 14 fixedly arranged on the second rotating shaft 12 to synchronously rotate, at the moment, the second motor 20 is started to drive the second speed reducer 19 to drive the trapezoidal lead screw 24 to rotate, the trapezoidal lead screw 24 drives the telescopic nut 23 to drive the fisheye bearing 22 to linearly move, the fisheye bearing 22 drives the seat body 17 through the first pin shaft 18 to drive the three-angle block 16 to drive the third bevel gear 16 to rotate around the first rotating shaft 16 to drive the cutting blade 14 to rotate, namely, the cutter assembly is driven by the first rotating shaft 9 to extend out of the sleeve.
The application method of the underground casing pipe electric slotting device comprises the following steps:
s1, a related technician lowers a first pipe body 1 and a second pipe body 2 to the side of a sleeve, and at the moment, a limiting device arranged on the second pipe body 2 is started to limit the first pipe body 1 and the second pipe body 2 on the sleeve;
S2, starting a first motor 3, driving a first speed reducer 4 by the first motor 3 to drive a first bevel gear 6 to rotate, driving a first rotating shaft 7 to rotate by a second bevel gear 8 meshed with the first bevel gear 6, driving a second bevel gear 11 to rotate by the first bevel gear 7, driving a second rotating shaft 12 to rotate by a second bevel gear 11 through a third bevel gear 13 meshed with the second bevel gear 11, and further driving a cutting blade 14 fixedly arranged on the second rotating shaft 12 to synchronously rotate by the second rotating shaft 12;
S3, starting a second motor 20 to drive a second speed reducer 19 to drive a trapezoidal screw 24 to rotate, wherein the trapezoidal screw 24 drives a screw nut telescopic rod 23 in threaded connection with the trapezoidal screw to drive a fisheye bearing 22 to perform linear motion, the fisheye bearing 22 drives a seat body 17 to drive a triangular block 16 to swing by taking a second pin shaft 21 as an axis, and at the moment, the triangular block 16 drives a bearing frame 9 to rotate around a first rotating shaft 7 by utilizing a pushing shaft, namely a cutting blade 14 driven to rotate by a driving assembly is driven to extend out of a first pipe body 1 to perform pressing cutting treatment on a sleeve;
S4, detecting the rotating speed of the cutting blade 14 and the pressure given to the bearing frame 9 by the pushing shaft through the detecting component in the process of cutting the sleeve by the cutting blade 14, acquiring rotating speed information and pressure information, transmitting the rotating speed information and the pressure information to an external controller, correspondingly comparing the acquired rotating speed information and pressure information with a preset rotating speed threshold value and a preset pressure threshold value, if the rotating speed information is lower than the rotating speed threshold value or the pressure information is higher than the pressure threshold value, indicating that the cutting blade 14 is cut and encounters resistance, starting the second motor 20 to enable the cutting blade 14 to reset to check the cutting blade 14, and if the quality of the cutting blade 14 is qualified, lowering the cutting blade 14 to a cutting position again, starting the second motor 20 again to push the cutting blade 14 to cut the sleeve and ensuring that the pressure information is within the pressure threshold value;
s5, when the pressure information and the rotation speed information are both within the corresponding rotation speed threshold value and the corresponding pressure threshold value, the pressure information and the rotation speed information are led into a resistance model after dimensionless processing, a resistance coefficient is output, if the resistance coefficient exceeds a preset resistance threshold value, the rotation speed of the cutting blade 14 is reduced or the pressure of the pushing shaft to the bearing frame 9 is reduced (the rotation speed of the bearing frame 9 is reduced) until the resistance coefficient is within the resistance threshold value, and the resistance model is expressed as:
wherein, Represents the coefficient of resistance and,The information of the rotational speed is indicated,The pressure information is represented by a set of values,The rotation speed influencing factor is indicated,Representing the pressure influence factor,Represents the material influence factor of the sleeve,，，。
Preferably, the detecting assembly comprises a rotation speed sensor mounted on the cutting blade 14 and a pressure sensor mounted on a pressing plate (not shown) embedded in the pushing chute, the pressure sensor being fixedly connected to the inner wall of the pushing chute, the purpose of this arrangement being to detect the rotation speed of the cutting blade 14 by the rotation speed sensor and to detect the pressure imparted to the carrier 9 by the pushing shaft by the pressure sensor.
Preferably, the pushing chute is a U-shaped chute.
It should be noted that in this document, relational terms such as a and B, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411158890.9A CN118669078B (en) | 2024-08-22 | 2024-08-22 | Downhole casing cutting device and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411158890.9A CN118669078B (en) | 2024-08-22 | 2024-08-22 | Downhole casing cutting device and use method thereof |
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| Publication Number | Publication Date |
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| CN118669078A CN118669078A (en) | 2024-09-20 |
| CN118669078B true CN118669078B (en) | 2024-11-15 |
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| CN202411158890.9A Active CN118669078B (en) | 2024-08-22 | 2024-08-22 | Downhole casing cutting device and use method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734334A (en) * | 2020-06-30 | 2020-10-02 | 合力（天津）能源科技股份有限公司 | Novel electric power downhole tool cutterbar |
| CN116624149A (en) * | 2023-06-25 | 2023-08-22 | 平顶山天安煤业股份有限公司 | An integrated drilling and slotting device and method for hydraulic fracturing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117468860A (en) * | 2022-07-20 | 2024-01-30 | 蓝土地能源技术有限公司 | A radial directional drilling device |
| CN219452043U (en) * | 2023-02-17 | 2023-08-01 | 广东普洛测控科技有限公司 | A Downhole Electric Cutting Robot |
| CN117102573A (en) * | 2023-09-22 | 2023-11-24 | 东南大学泰州生物医药与医疗器械研究院 | Automatic cutting machine for magnesium alloy micro-pipe and use method |
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- 2024-08-22 CN CN202411158890.9A patent/CN118669078B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734334A (en) * | 2020-06-30 | 2020-10-02 | 合力（天津）能源科技股份有限公司 | Novel electric power downhole tool cutterbar |
| CN116624149A (en) * | 2023-06-25 | 2023-08-22 | 平顶山天安煤业股份有限公司 | An integrated drilling and slotting device and method for hydraulic fracturing |
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