CN115263219A - Underground electric cutting device - Google Patents
Underground electric cutting device Download PDFInfo
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- CN115263219A CN115263219A CN202211080527.0A CN202211080527A CN115263219A CN 115263219 A CN115263219 A CN 115263219A CN 202211080527 A CN202211080527 A CN 202211080527A CN 115263219 A CN115263219 A CN 115263219A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 73
- 238000004804 winding Methods 0.000 claims abstract description 3
- 238000004873 anchoring Methods 0.000 claims description 49
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 15
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- 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
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
- E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
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- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/14—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for displacing a cable or a cable-operated tool, e.g. for logging or perforating operations in deviated wells
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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)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses an underground electric cutting device, which comprises a control part and an operation part, wherein the operation part is connected with the control part through a traction cable; the control part comprises a cable frame, a control terminal, a traction cable and a metering assembly, wherein the cable frame is used for storing the traction cable in a winding manner; the metering assembly connected with the control terminal is arranged on the cable frame, the length of the cable which is released is monitored and calculated through the idler wheel arranged on the metering assembly, and the length information is sent to the control terminal; the control terminal is connected with the operation part through a traction cable. The invention directly transfers the operation part by the traction cable without connecting a drill rod, so the operation process is very simple, the transfer speed is high, the cutting efficiency is high, and the cost and the period of casing maintenance can be greatly improved.
Description
Technical Field
The invention relates to an underground maintenance tool, in particular to an underground electric cutting device which does not need a drill rod and is more convenient to operate.
Background
After the underground casing pipe is used for a period of time, due to various reasons, the problems of casing pipe damage, deformation and the like can occur, the underground well repair is needed, in the existing underground well repair, a drill pipe conveying mode is adopted for casing pipe cutting, a cutting tool is connected to the bottom of a drill pipe, thrust is generated through hydraulic pressure and is in contact with the inner wall of the casing pipe, the cutting tool is driven to rotate by rotating a drilling tool, the cutting is completed, a plurality of achievements are obtained in practical application, and due to the fact that the operation front workload of the drill pipe is large, the operation is complex, the problems of high cost and low success rate exist in the technology. Specifically speaking, when the drill rod type is matched with hydraulic operation, a drill rod needs to be connected, the drill rod is conveyed to a proper position by matching with corresponding equipment, after the drill rod reaches the position, hydraulic compaction is started to realize positioning cutting, in the practical application process, the cutting position is usually hundreds of meters or even two kilometers, so that a plurality of drill rods need to be connected, the whole process has multiple operation steps, the related equipment and personnel are large in quantity, corresponding cutting can be realized by good matching of the personnel, the efficiency is low, the difficulty is high, and therefore the drilling rod-free electric cutting device capable of entering and leaving is significant to the field.
Disclosure of Invention
Technical purpose
The invention aims to overcome the defects of the existing hydraulic well repairing technology of a drill rod and provides an underground electric cutting device which is lowered through a cable and has the functions of self-righting, self-positioning and automatic cutting.
(II) technical scheme
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
the underground electric cutting device comprises a control part and an operation part connected with the control part through a traction cable, wherein the control part is used for controlling the operation of the operation part;
the control part comprises a cable frame, a control terminal, a traction cable and a metering assembly, wherein the cable frame is used for storing the traction cable in a winding manner; the metering component connected with the control terminal is arranged on the cable frame, the length of the cable which is paid out is monitored and calculated through the idler wheel arranged on the metering component, and the length information is sent to the control terminal; the control terminal is connected with the operation part through a traction cable;
the operation part is a linear rod-shaped assembly composed of a plurality of sections, which are respectively a monitoring control section, an electric righting section, a hydraulic balance section, a hydraulic driving section, an anchoring section and an electric cutting section from left to right, and all the sections are connected in sequence; the monitoring control section is connected with the traction cable, and is used for supplying power and controlling each section and realizing data exchange and transmission with the control terminal; the electric centralizing section is used for centralizing the operation part in the casing pipe to enable the operation part to be coaxial and concentric with the casing pipe; the hydraulic balance section realizes fine adjustment of the position of the electric cutting section through telescopic adjustment; the hydraulic driving section is used for providing driving hydraulic fluid for the anchoring section; the anchoring section is used for integrally anchoring the operation part in the sleeve, so that the position of the electric cutting section is fixed when the electric cutting section works, and smooth completion of electric cutting is ensured; the electric cutting section is used for realizing electric cutting of the sleeve;
the monitoring control section comprises a structural pipe, a main power supply module arranged in the structural pipe and a main control circuit board arranged in the structural pipe and connected with the main power supply module;
the electric centering section is formed by connecting two four-arm electric centering devices in series, the two electric centering devices are both connected with the main control circuit board and are powered and controlled by the main control circuit board;
the hydraulic balance section comprises a fixed part connected with the electric righting section and a movable part connected with the hydraulic driving section, an electric hydraulic pump connected with a control circuit is installed in the fixed part, the movable end of the electric hydraulic pump is connected with the movable part, the electric hydraulic pump is powered and controlled by a main control circuit board, and the movable part can be stretched in a small distance along the axial direction compared with the fixed part through the stretching of the electric hydraulic pump;
the hydraulic driving section comprises an outer pipe, a motor arranged in the outer pipe and a plunger pump arranged in the outer pipe and connected with the motor, the motor is connected with the main control board, and the motor is powered and controlled by the main control board;
the anchoring section comprises a shell, a front anchoring unit and a rear anchoring unit which are arranged in the shell, the front anchoring unit and the rear anchoring unit are connected with a plunger pump through a high-pressure pipe, working hydraulic pressure is provided for the front anchoring unit and the rear anchoring unit through the plunger pump, and the front anchoring unit and the rear anchoring unit are hydraulically driven three-jaw anchoring mechanisms;
the electric cutting section comprises a driving part and a cutting part, a main motor and a speed reducer connected with the main motor are installed in the driving part, and the speed reducer is connected with the cutting part; the speed reducer is used for reducing the speed and increasing the torque of the output of the motor and then driving the cutting part to rotate; the cutting part comprises a cutter disc and a cutter control mechanism connected with the cutter disc, three cutter grooves are distributed on the circular cutter disc, cutters are correspondingly arranged in the cutter grooves and connected with the cutter control mechanism, and the cutter control mechanism can control the cutters to move in the cutter grooves so as to realize the step cutting of the cutters.
Furthermore, the traction cable comprises an inner jacket, a steel cable arranged in the jacket, and a conductive wire and a communication wire which are arranged in the jacket, and the steel cable bears the downward tension of the operation part.
Further, the monitoring control section still includes and is cyclic annular a plurality of infrared range units of arranging and inlay the establishing on the structure pipe, and each infrared range unit links to each other with main control circuit board, calculates when infrared range unit is used for the operation portion to go into the well through two sheathed tube combination positions, because sheathed tube length is known, and sheathed tube length stability is high, so sheathed tube length and quantity are as position monitoring correction.
Further, the cutter control mechanism comprises a mechanical linkage component and a cutter control motor connected with the mechanical linkage component, and the cutter control motor drives the mechanism linkage component to move so as to drive the cutter to extend out along the cutter groove.
And thirdly, the operation part is directly lowered by the traction cable without connecting a drill rod, so that the operation process is extremely simple, the lowering speed is high, the cutting efficiency is high, and the cost and the period of casing maintenance can be greatly improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description, serve to explain the principles of the specification.
FIG. 1 is a schematic view of the overall structure of the apparatus in the example.
FIG. 2 is a schematic view of the device of the embodiment in operation in a well.
Fig. 3 is a schematic view of the overall structure of the operation portion in the embodiment.
Fig. 4 is a schematic structural view of the operation unit in the embodiment from a perspective view.
Fig. 5 is a schematic structural view of the embodiment with a part of the operation portion broken away.
Fig. 6 is a schematic cross-sectional structure of the traction cable in the embodiment.
Fig. 7 is a partially enlarged view at a.
Detailed Description
Various exemplary embodiments of the present specification will now be described in detail with reference to the accompanying drawings.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the specification, its application, or uses.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is also to be noted that the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically stated or limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The embodiment is as follows:
fig. 1-7 show an exemplary structure adapted to the embodiment, and as shown in fig. 1, the whole structure is composed of two parts, namely, an operation part 1 for cutting the casing 19 in the well and a control part 2 connected to the operation part 1 for lowering, recovering and controlling the operation part 1; the control part 2 comprises a cable frame 3, a control terminal 4, a traction cable 5 and a metering assembly 6, wherein the cable frame 3 comprises a support 7, a cable drum 8 and an electric take-up and pay-off module 9, and the cable drum 8 is arranged on the support 7 through a rotating shaft; the electric wire coiling and uncoiling module 9 is arranged on the support 7, is connected and matched with the cable reel 8 and is used for driving the cable reel 8 to rotate around a shaft positively and negatively so as to realize wire coiling and uncoiling; the electric take-up and pay-off module 9 consists of a motor and a speed reducer connected with the motor, wherein the motor drives the speed reducer to work, and the speed reducer drives the cable reel 8 to rotate.
The metering component 6 is a roller type meter counter, is arranged below the bracket 7 and is in contraposition fit with the cable reel 8, the metering component 6 is used for leading-out guidance and length metering of the cable reel 8, and the metering component 6 is connected with the control terminal 4 through a data cable and is used for sending cable length data to the control terminal 4.
The control terminal 4 comprises a control circuit and a cooling fan which are arranged in the case, and a display screen and control keys which are embedded outside the case, wherein the display screen is used for displaying various information, and the control keys are used for inputting control instructions;
since the traction cable 5 is required to carry not only power supply and data transmission but also traction of the operation unit 1, it is required to have high tensile strength, and the structure thereof is as shown in fig. 6, in which the traction cable 5 includes an inner jacket, a wire rope 10 provided in the jacket, a conductive wire 11 and a communication wire 12 provided in the jacket, and the wire rope 10 carries the mass tension when the operation unit 1 travels up and down.
An exemplary structure diagram of the operation part is given from fig. 3-5 and 7, and as shown in fig. 2-5, the operation part 1 is a straight rod-shaped assembly composed of a plurality of sections, which are a monitoring control section 13, an electric centralizing section 14, a hydraulic balancing section 15, a hydraulic driving section 16, an anchoring section 17 and an electric cutting section 18 from left to right; the monitoring control section 13 is connected with the traction cable 5, and the monitoring control section 13 comprises a structural pipe, a main power supply module arranged in the structural pipe and a main control circuit board arranged in the structural pipe and connected with the main power supply module; the monitoring control section 13 further comprises a plurality of infrared distance measuring units 41 which are annularly arranged and embedded on the structural pipe, each infrared distance measuring unit 41 is connected with the main control circuit board, the infrared distance measuring units 41 are used for calculating when the operation part 1 goes into the casing 19 and passes through the combination position 20 of the two casings 19, and the length of the casings 19 is known, and the length stability of the casings 19 is high, so that the number of the casings 19 passing through can be used for monitoring and correcting the position of the operation part 1 in the well.
The electric centering section 14 is formed by connecting two four-arm electric centering devices 21 in series, the two electric centering devices 21 are both connected with the main control circuit board and are powered and controlled by the main control circuit board, and the electric centering section 14 is used for centering the operation part 1 in the casing 19 to enable the operation part 1 and the casing 19 to be coaxial and concentric; the electric centralizer 21 comprises an electric telescopic rod and four linkage centralizing arms with a reset function, wherein each centralizing arm is composed of two centralizing rods which are hinged with each other, and centralizing guide wheels are arranged at the connection positions of the two centralizing rods.
The position fine setting to electronic cutting section 18 is realized through flexible adjustment to hydraulic balance section 15, hydraulic balance section 18 includes the fixed part 22 that links to each other with electronic section 14 of righting, the movable part 23 that links to each other with hydraulic drive section 16, install the electronic hydraulic pump that links to each other with control circuit in the fixed part 22, electronic hydraulic pump's expansion end links to each other with movable part 23, electronic hydraulic pump is supplied power and control by main control circuit board, can realize through electronic hydraulic pump's flexible 23 movable part and follow the axial for a short distance in fixed part 22 and stretch out and draw back.
The hydraulic driving section 16 is used for providing driving hydraulic fluid for the anchoring section 17, the hydraulic driving section 16 comprises an outer pipe 24, a motor 25 arranged in the outer pipe 24 and a plunger pump 26 arranged in the outer pipe 24 and connected with the motor 25, the motor is connected with a main control board, and the motor is powered and controlled by the main control board.
The anchoring section 17 is used for integrally anchoring the operation part 1 in the sleeve 19, so that the position of the electric cutting section 18 is fixed when the electric cutting section works, and smooth completion of electric cutting is ensured; the electric cutting section is used for realizing electric cutting of the sleeve; the anchoring section 17 comprises a shell 27, a front anchoring unit 28 and a rear anchoring unit 29 which are arranged in the shell 27, wherein the front anchoring unit 28 and the rear anchoring unit 29 are connected with a plunger pump 26 through a high-pressure pipe, working hydraulic pressure is provided for the front anchoring unit 28 and the rear anchoring unit 29 through the plunger pump 26, and the front anchoring unit 28 and the rear anchoring unit 29 are both hydraulically-driven three-claw anchoring mechanisms; the three-jaw anchoring machine comprises a body 30, an anchoring block 32 arranged on the body 30 through a plurality of linkage rods 31, and a hydraulic rod 33 which is connected with the anchoring block 32 and has a spring return function. The housing 27 is provided with an opening aligned with the anchor block 32.
The electric cutting section 18 comprises a driving part 34 and a cutting part 35, a main motor 36 and a speed reducer 37 connected with the main motor 36 are installed in the driving part 34, and the speed reducer 37 is connected with the cutting part 35; the speed reducer 37 is used for reducing the speed and increasing the torque of the output of the main motor 36 and then driving the cutting part 35 to rotate; the cutting part 35 comprises a cutter disc 38 and a cutter control mechanism connected with the cutter disc 38, three cutter grooves are annularly distributed on the circular cutter disc 38, cutters 40 are correspondingly arranged in the cutter grooves, the cutters 40 are connected with the cutter control mechanism, and the cutter control mechanism can control the cutters 40 to move in the cutter grooves so as to realize the step cutting of the cutters 40. The knife control mechanism comprises a mechanical linkage assembly 39 and a knife control motor 41 connected with the mechanism linkage assembly 39, and the knife control motor 41 drives the mechanism linkage assembly 39 to move so as to drive the knife 40 to extend out along the knife slot.
The above structural layer has been described, for convenience of understanding, and further description is made from the working principle and working action, the operating part 1 is inserted into the casing 19, the control part 2 enters the setting-out to make the operating part 1 move down in the well, during the moving down process, the operating part 1 also monitors the binding position 20 of the casing 19, and further performs a correction on the moving down distance and position, after the specified position is reached, the centering arms in the two electric centralizers 21 of the electric centering section 14 are driven by the electric telescopic rod to transversely extend, the four centering arms are linked, the operating part 1 and the casing 19 can be centered and coaxially aligned, in this state, the hydraulic balancing section 15 performs a fine adjustment to make the electric cutting section 18 reach a proper cutting position, then the hydraulic driving section 16 starts to work, and a high-pressure hydraulic fluid is provided to the anchoring section 17, so that the anchoring block 32 in the anchoring section 17 transversely extends, the inner wall of the inner casing 18 is tightly pressed to realize anchoring, after the completion of the electric cutting section 18 starts to work, during the cutting process, the cutting feed amount of the cutter 40 is controlled by the control mechanism, the cutting is ensured to safely complete the cutting, the cutting is completed, the cutting is further, the cutting operation is completed, the electric centering section 21 is retracted, and the electric cutting part is retracted, and the electric centering part is retracted by the control mechanism.
The foregoing description of the embodiments of the present specification has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the market, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the application is defined by the appended claims.
Claims (5)
1. Electronic cutting device in pit, its characterized in that: the control device comprises a control part and an operation part connected with the control part through a traction cable, wherein the control part is used for controlling the operation of the operation part; the control part comprises a cable frame, a control terminal, a traction cable and a metering assembly, wherein the cable frame is used for storing the traction cable in a winding manner; the metering assembly connected with the control terminal is arranged on the cable frame, the length of the cable which is released is monitored and calculated through the idler wheel arranged on the metering assembly, and the length information is sent to the control terminal; the control terminal is connected with the operation part through a traction cable; the operation part is a linear rod-shaped assembly composed of a plurality of sections, which are respectively a monitoring control section, an electric righting section, a hydraulic balance section, a hydraulic driving section, an anchoring section and an electric cutting section from left to right, and all the sections are connected in sequence; the monitoring control section is connected with the traction cable, and is used for supplying power and controlling each section and realizing data exchange and transmission with the control terminal; the electric centralizing section is used for centralizing the operation part in the casing pipe to enable the operation part to be coaxial and concentric with the casing pipe; the hydraulic balance section realizes fine adjustment of the position of the electric cutting section through telescopic adjustment; the hydraulic driving section is used for providing driving hydraulic fluid for the anchoring section; the anchoring section is used for integrally anchoring the operation part in the sleeve, so that the position of the electric cutting section is fixed when the electric cutting section works, and smooth completion of electric cutting is ensured; the electric cutting section is used for realizing electric cutting of the sleeve.
2. The downhole electrical cutting apparatus as recited in claim 1, wherein: the monitoring control section comprises a structural pipe, a main power supply module arranged in the structural pipe, and a main control circuit board arranged in the structural pipe and connected with the main power supply module: the electric centering section is formed by connecting two four-arm electric centering devices in series, the two electric centering devices are both connected with the main control circuit board and are powered and controlled by the main control circuit board; the hydraulic balance section comprises a fixed part connected with the electric righting section and a movable part connected with the hydraulic driving section, an electric hydraulic pump connected with a control circuit is installed in the fixed part, the movable end of the electric hydraulic pump is connected with the movable part, the electric hydraulic pump is powered and controlled by a main control circuit board, and the movable part can be stretched in a small distance along the axial direction compared with the fixed part through the stretching of the electric hydraulic pump; the hydraulic driving section comprises an outer pipe, a motor arranged in the outer pipe and a plunger pump arranged in the outer pipe and connected with the motor, the motor is connected with the main control board, and the motor is powered and controlled by the main control board; the anchoring section comprises a shell, a front anchoring unit and a rear anchoring unit which are arranged in the shell, the front anchoring unit and the rear anchoring unit are connected with a plunger pump through a high-pressure pipe, working hydraulic pressure is provided for the front anchoring unit and the rear anchoring unit through the plunger pump, and the front anchoring unit and the rear anchoring unit are hydraulically driven three-jaw anchoring mechanisms; the electric cutting section comprises a driving part and a cutting part, a main motor and a speed reducer connected with the main motor are installed in the driving part, and the speed reducer is connected with the cutting part; the speed reducer is used for reducing the speed and increasing the torque of the output of the motor and then driving the cutting part to rotate; the cutting part comprises a cutter disc and a cutter control mechanism connected with the cutter disc, three cutter grooves are distributed on the circular cutter disc, cutters are correspondingly arranged in the cutter grooves and connected with the cutter control mechanism, and the cutter control mechanism can control the cutters to move in the cutter grooves so as to realize the step cutting of the cutters.
3. The downhole electrical cutting apparatus as recited in claim 1, wherein: the traction cable comprises an inner jacket, a steel cable arranged in the jacket, a conductive wire and a communication wire, wherein the conductive wire and the communication wire are arranged in the jacket, and the steel cable bears the downward tension of the operation part.
4. A downhole electrical cutting apparatus as claimed in claim 1 or 2, wherein: the monitoring control section is still including being a plurality of infrared range units that the cyclic annular is arranged and inlays and establish on the structure pipe, and each infrared range unit links to each other with main control circuit board, and the infrared range unit is calculated when being used for the operation portion to go into the well through two sheathed tube combination positions, because sheathed tube length is known, and sheathed tube length stability is high, so sheathed tube length and quantity are as position monitoring correction.
5. The downhole power cutting apparatus as recited in claim 2, wherein: the cutter control mechanism comprises a mechanical linkage component and a cutter control motor connected with the mechanical linkage component, and the cutter control motor drives the mechanism linkage component to move so as to drive the cutter to extend out along the cutter groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211080527.0A CN115263219A (en) | 2022-09-05 | 2022-09-05 | Underground electric cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211080527.0A CN115263219A (en) | 2022-09-05 | 2022-09-05 | Underground electric cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115263219A true CN115263219A (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211080527.0A Pending CN115263219A (en) | 2022-09-05 | 2022-09-05 | Underground electric cutting device |
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| Country | Link |
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| CN (1) | CN115263219A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398076A (en) * | 2023-05-04 | 2023-07-07 | 西南石油大学 | Oil gas production pipe column cutting method |
| CN116427873A (en) * | 2023-05-04 | 2023-07-14 | 西南石油大学 | Oil gas production tubular column cutterbar |
-
2022
- 2022-09-05 CN CN202211080527.0A patent/CN115263219A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398076A (en) * | 2023-05-04 | 2023-07-07 | 西南石油大学 | Oil gas production pipe column cutting method |
| CN116427873A (en) * | 2023-05-04 | 2023-07-14 | 西南石油大学 | Oil gas production tubular column cutterbar |
| CN116427873B (en) * | 2023-05-04 | 2023-11-03 | 西南石油大学 | Oil gas production tubular column cutterbar |
| CN116398076B (en) * | 2023-05-04 | 2024-01-19 | 西南石油大学 | Oil gas production pipe column cutting method |
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