CN112855060A - Cable-driven underground cutting instrument and control method - Google Patents
Cable-driven underground cutting instrument and control method Download PDFInfo
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- CN112855060A CN112855060A CN202110189364.9A CN202110189364A CN112855060A CN 112855060 A CN112855060 A CN 112855060A CN 202110189364 A CN202110189364 A CN 202110189364A CN 112855060 A CN112855060 A CN 112855060A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004873 anchoring Methods 0.000 claims abstract description 66
- 230000006854 communication Effects 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910001315 Tool steel Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 230000007175 bidirectional communication Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression 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
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a cable-driven underground cutting instrument and a control method thereof, wherein the cable-driven underground cutting instrument comprises a ground system and an underground cutting instrument; the ground system is connected with the underground cutting instrument through a logging cable; the underground cutting instrument comprises a cable joint, a centralizer, an electronic unit, a hydraulic balance oil tank, a hydraulic power unit, a hydraulic control unit, an anchoring unit, a cutting unit and a cutter head fixing barrel which are mechanically connected in sequence; the logging cable is mechanically connected with the cable connector and supplies power to the centralizer, the hydraulic control unit and the anchoring unit, and the logging cable is connected with the electronic unit to carry out underground communication; the hydraulic control unit is connected with the hydraulic balance oil tank and the hydraulic power unit to drive the cutting unit to cut; the anchoring unit has an anchoring arm and the cutting unit has a cutting arm, the cutting arm being disposed in the cutting groove of the bit holder cylinder. This cable drive is cutting appearance in pit, the operation is simple relatively to whole journey is controllable, does not have the intervention of dangerization article, has practiced thrift cost and personnel's input when reducing the operation risk.
Description
Technical Field
The invention relates to the technical field of petroleum downhole operation, in particular to a cable-driven downhole cutting instrument, wherein a power part adopts cable transmission to cut off a pipe column (an oil pipe, a casing pipe, a drill rod and the like) from inside to outside in a mechanical method for operation.
Background
The traditional cutting mostly adopts explosion and chemistry to cut the tubular column from the inside, so that the cutting has great potential safety hazard and environmental pollution, and simultaneously, the risk of secondary safety accidents is easily caused. The invention adopts logging cable to transmit power in a long-distance wired way and simultaneously assists in signal monitoring, thereby achieving safe, reliable, environment-friendly and efficient operation and avoiding secondary accidents.
Disclosure of Invention
The invention aims to realize a safe, reliable, environment-friendly and accurately-controlled underground mechanical cutting instrument device and a control method.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
A cable-driven downhole cutting device comprises a surface system and a downhole cutting instrument;
the ground system is connected with the underground cutting instrument through a logging cable;
the underground cutting instrument comprises a cable joint, a centralizer, an electronic unit, a hydraulic balance oil tank, a hydraulic power unit, a hydraulic control unit, an anchoring unit, a cutting unit and a cutter head fixing barrel which are mechanically connected in sequence; the logging cable is mechanically connected with the cable connector and supplies power to the centralizer, the hydraulic control unit and the anchoring unit, and the logging cable is connected with the electronic unit to carry out underground communication; the hydraulic control unit is connected with the hydraulic balance oil tank and the hydraulic power unit to drive the cutting unit to cut;
the anchoring unit has an anchoring arm and the cutting unit has a cutting arm, the cutting arm being arranged on the bit holder cylinder.
As a further improvement of the invention, magnetic positioning is also arranged between the centralizer and the electronic unit.
As a further improvement of the invention, a first safety recovery unit for recovering the anchoring arm inside the instrument is arranged inside the anchoring unit; the hydraulic power unit drives the first safety recovery unit to work.
As a further improvement of the invention, a second safety recovery unit for recovering the cutting arm inside the instrument is arranged inside the cutting unit; the hydraulic power unit drives the second safety recovery unit to work.
As a further improvement of the invention, the hydraulic control unit is used for distributing high-pressure hydraulic oil provided by the hydraulic power unit to each execution unit to drive the cutting unit to cut;
two pressure sensors are set in the hydraulic control unit and used for monitoring the pushing pressure of the anchoring arm and the cutting arm.
As a further improvement of the invention, the hydraulic power unit comprises a DC countless motor and a hydraulic plunger pump for powering other performing actions.
As a further improvement of the invention, the anchoring unit provides reverse torque for the cutting unit during cutting, and the anchoring arms of the anchoring unit are a plurality of uniformly distributed folding mechanical arms; the contact position of the anchoring arm and the inner wall of the pipe column is provided with a sharp protruding position;
the material hardness of the sharp protruding position is HRC55 or more.
As a further improvement of the invention, the cutting arm of the cutting unit is a plurality of uniformly distributed cutting bits; the blade material of the cutting knife head is high-speed tool steel.
A method of controlling a wireline-driven downhole cutting device, comprising the steps of:
after the underground cutting instrument is placed to a position needing to be cut of an underground pipe column from the ground, a ground system sends a command and a hydraulic power unit is started through an electronic unit;
the ground system sends an anchoring command, the electronic unit controls an electromagnetic valve of the hydraulic control unit to introduce hydraulic pressure into the anchoring unit, so that an anchoring arm of the anchoring unit is expanded and contacts the inner wall of the underground pipe column to center the underground cutting instrument;
the ground system sends a command to enable the cutting unit to rotate through the electronic unit to drive the cutting arm to rotate, the electronic unit controls the hydraulic pressure of the electromagnetic valve of the hydraulic control unit to enable the cutter head cutting arm to be opened, and therefore the pipe column is cut off from the inside to the outside to complete underground cutting operation.
As a further improvement of the invention, when the power supply of the downhole cutting instrument fails, the safety recovery unit enables the anchoring arm and the cutting arm to automatically recover and release anchoring and cutting actions without power supply and restore the anchoring and cutting actions to the inside of the instrument.
Compared with the prior art, the invention has the beneficial effects that:
the invention solves the problems of safe examination and approval procedures of storage and transportation required by the conventional explosive cutting, and no special operation qualification and authentication required by operating personnel and enterprises. The cutting operation is safer and more reliable, energy-saving and environment-friendly, and secondary engineering accidents caused by explosion can be avoided. Because the cable drives the underground cutting instrument, the operation is relatively simple, the whole process is controllable, no dangerous chemical substance is involved, and special qualification and approval procedures during the cutting operation are not needed. The operation risk is reduced, and meanwhile, the cost and the personnel investment are saved.
The ground system transmits power signals and power to the underground instrument through the logging cable, the power is distributed through the electronic circuit unit, and control signals are sent to the execution units to realize the work of the execution units. The power supply power and the data control when the cutter is used are provided for the underground instrument through a ground system, and signals and power are transmitted to the cable joint through the logging cable to complete the underground and ground control and communication.
Drawings
The drawings herein are for clarity of illustration of embodiments of the present application or of prior art. The drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. Meanwhile, in order to better show the invention and verify the effectiveness of the invention, the invention shows an effect graph of the front-to-back suppression ratio of the microphone array.
FIG. 1 is a schematic view of a cable driven downhole cutter operating condition;
FIG. 2 is a schematic view of a cable driven downhole cutting tool according to the present invention.
FIG. 3 is a functional block diagram of a cable driven downhole cutter of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The surface system 1 shown in fig. 1 is operatively located at the surface and is in communication with downhole tools using a wireline cable 2.
The tubular string 40 is the item to be cut and may be an internally hollow tubular such as tubing, drill pipe, casing, etc. The tubular string 40 is placed inside the wellbore 30 during the previous stage of construction, and needs to be cut from a specific location for some special reasons, and due to downhole conditions, it can only be cut from the inside, but cannot damage the wellbore.
The downhole cutting tool 50 is lowered through the logging cable 2 to the cutting position inside the tubular string 40, and wired control and power transmission is formed with the surface system 1 by the logging cable 2. The operator controls the action of the downhole cutting tool 50 by operating the surface system 1 at the surface, so that the downhole tubular string 40 is cut from the inside to the outside to meet the construction requirements.
Fig. 2 essentially comprises two parts, the surface system 1 and the downhole cutter 50. The specific cable transmission downhole cutting instrument mainly comprises: the device comprises a cable joint 3, a centralizer 4, an electronic unit 6, a hydraulic balance oil tank 7, a hydraulic power unit 8, a hydraulic control unit 9, an anchoring unit 10, a cutting unit 11 and a cutter head fixing cylinder 12 which are mechanically connected in sequence;
the ground system 1 is used for controlling the two parts of the underground instrument part to work and is connected through a logging cable 2, the ground system 1 is operated by an operator to send various working instructions to an electronic unit 6 of the underground instrument, the electronic unit 6 sends the instructions to the ground system 1 to convert the instructions into control signals, and electric energy is sent to a hydraulic power unit 8, a hydraulic control unit 9 and a cutting unit 11 to drive an anchoring unit 10 and the cutting unit 11 to work so as to realize cutting operation. The ground system 1 internally comprises a power supply AC-DC module, a communication module, an intelligent touch screen module, a control module and the like.
The cable joint 3 is a connecting part of the logging cable 2 and an underground instrument part, plays a role in mechanical connection and electrical appliance connection, can meet the environment of high temperature 175 ℃ and high pressure 140Mpa underground, and can isolate the liquid in the shaft 30 and the figure 1 so as to avoid short circuit of the electrical appliance.
The magnetic location 5 is a depth detection tool of the downhole tool for determining the depth of the desired cutting location.
The centralizer 4 can make the upper part of the underground cutting instrument be positioned at the center inside the underground pipe column due to the fact that the instrument is long
And the electronic unit 6 is used for signal processing, signal receiving, signal sending, motor driving, solenoid valve control and pressure gauge data monitoring. Thereby realizing the anchoring and cutting actions of the cutting instrument in the well. The electronic unit 6 receives the electric power and signal transmission realized on the ground to the underground; and transmitting the received signal to the downhole unit to execute the required actions of each part. The electronic unit 6 is internally provided with a communication board, a control board, a hydraulic motor drive board, a cutting unit motor drive board and a pressure signal monitoring board.
And the hydraulic balance oil tank 7 is communicated with the whole instrument, is filled with hydraulic oil, provides an oil source for the hydraulic power unit 8 and is used for balancing underground pressure.
The hydraulic control unit 9 is used to distribute the high pressure hydraulic oil supplied by the hydraulic power unit 8 to the individual actuators, while 2 pressure sensors are set in the hydraulic control unit 9 for monitoring the thrust pressure of the anchoring and cutting arm 121.
The hydraulic power unit 8 mainly comprises a direct current countless motor and a hydraulic plunger pump and provides power for other executing actions.
The function of the anchoring unit 10 is to provide a reverse torque to the cutting unit 11 during cutting, so as to prevent the whole string of instruments from rotating downhole due to the action of the cutting bit; meanwhile, the instrument can be centered on the center of the inner wall of the underground pipe column, necessary centering conditions are provided for the cutting unit 11, and meanwhile, the anchoring bearing torque is required to be more than 2 times of the torque when the cutting tool bit cuts. Otherwise, the cutting tool bit is broken and clamped, or the cutting instrument drives the logging cable and the instrument to rotate, so that the cable is damaged, and the cutting operation cannot be smoothly completed.
The anchoring arm 101 of the anchoring unit 10 is 3 folding mechanical arms uniformly distributed in 360 degrees, so that centering of an instrument is facilitated, and meanwhile, the contact position of the anchoring arm 101 and the inner wall of the tubular column is provided with a sharp protrusion for increasing anchoring force. The material hardness of the anchoring arms 101 at the sharp protruding position is chosen above HRC 55. The retraction of the anchoring arm 101 is normally retracted by the force generated by the hydraulic power unit 8. The anchoring unit 10 is provided with a safety recovery system, and the anchoring arm 101 is automatically recovered into the instrument after the instrument is powered off, so that the anchoring state is released.
Cutting unit 11 is the actuating system of cutting instrument for accomplish cutting operation in the pit, the cutting tool bit is 3 360 degrees equipartitions settings, can support each other, can make the cutting tool bit atress more stable, the shape special design of three tool bit can open the in-process at the tool bit and cut tubular column from inside to outside in the pit, can not appear interfering and cause unable cutting, the iron round pin that the cutting produced is for being not more than 1x3x6 mm's tiny particle. The blade is made of specially customized impact-resistant high-speed tool steel, can bear impact during initial contact with a cutting pipe column and during cutting, and cannot break the cutting part of the blade to cause abnormal cutting.
The working process of the invention is as follows:
when the instrument is put down to the underground pipe column from the ground and the cutting position is needed, the depth of the pipe column is detected by the magnetic positioning 5, and the depth of the cutting position is judged. The centralizer 4 is used to achieve upper centering of the instrument. After reaching the cutting position, the hydraulic power unit is activated by a ground-sent command via the electronic unit 6, the electric energy being converted into hydraulic energy. The ground sends an anchoring command, the electronic unit 6 controls an electromagnetic valve of the hydraulic control unit to introduce hydraulic pressure into the anchoring unit 10, so that 3 anchoring arms 101 of the anchoring unit 10 are opened and contact the inner wall of the underground pipe column, and the anchoring arms 101 are provided with sawtooth-shaped protrusions to contact the inner wall of the pipe column, so that an instrument is firmly fixed on the inner wall of the underground pipe column to bear reverse torque during cutting, and meanwhile, the instrument can be centered to provide a centering condition for subsequent cutting. The ground sends the order and makes the cutting motor rotation of cutting unit drive 3 cutting tool bits instruments rotation via electronic unit 6, and ground sends the order and makes the solenoid valve hydraulic pressure via electronic unit 6 control hydraulic control unit make tool bit cutting arm slowly open, and 3 tool bits are rotatory and slowly open thereby cut off the tubular column from inside outwards to accomplish borehole operation under the cutting motor drives this moment.
The whole cutting process ground system signal monitoring and displaying comprises: the curves of the voltage, the current and the motor speed of the hydraulic motor and the cutting motor, the pushing pressure curves of the anchoring unit and the cutting unit are displayed along with a time axis. The method is used for judging the working state of the cutting instrument: the underground power supply state, the working state of each motor, the anchoring pressure state of the anchoring part, the pressure state of the cutting arm and the cutting speed state.
When the instrument power supply breaks down, automatically controlled order, instrument power supply can't be sent to instrument in the pit, and the safety recovery unit that the instrument set for can play a role when the instrument can not normally work, makes the anchor arm 101 and the cutting arm of instrument retrieve automatically under the condition that does not need the power supply and removes anchor and cutting action, resume inside the instrument, the follow tubular column in the pit that makes the instrument can be smooth retrieves ground, avoids the instrument card to cause the incident inside the tubular column.
Figure 3 shows that the surface system is operated at the surface to control 2 the operation of all functional modules of the downhole electronic unit through the logging cable. The logging cable 2 can transmit power to the underground electronic unit while realizing real-time bidirectional communication of underground signals, and the ground system can control the underground instrument to work in real time and monitor the working state of the instrument at the same time. The ground system can display the underground power supply state, the motor voltage and current, the motor rotating speed, the hydraulic system pressure, the electromagnetic valve working state and the cutting progress in real time. Related data provided by a ground system can help ground operators to judge the underground working state of the instrument, so that the underground cutting is ensured to be smoothly carried out, and the cutting work is completed. The ground system is connected with the underground circuit through the logging cable 2, the logging cable 2 transmits the power of the ground system to the underground circuit, and meanwhile, the logging cable 2 bears the communication signal transmission function of the underground instrument.
The underground circuit unit establishes bidirectional communication between the electric power transmitted by the ground system and the hydraulic power unit through the transmission control S4 to provide power for the motor of the hydraulic power unit, so that the hydraulic power unit is controlled to work, the voltage, the current and the rotating speed of the motor are detected at the same time, and the electric power is transmitted to the ground system in real time through the logging cable control S1.
The downhole circuit unit connects the power transmitted by the surface system with the hydraulic control unit through the transmission control S2 to realize bidirectional communication, and provides power for the electromagnetic valve and the pressure sensor in the hydraulic control system, thereby controlling electromagnetic work, detecting the pressure in the system and transmitting signal data to the surface system through the logging cable control S1.
The underground circuit ternary system connects the power transmitted by the ground system with the cutting unit through the transmission control S6 to realize bidirectional communication, provides power for the motor of the cutting unit, controls the motor to work, and transmits the voltage, the current and the rotating speed of the working state of the motor to the ground system in real time through the logging cable control S1.
The hydraulic power unit transmits hydraulic oil to the hydraulic control unit through a transmission pipeline S5, a control command is sent by the ground, the hydraulic control unit is controlled by an electronic unit through a logging cable S1 and then a control S2, the hydraulic pressure provided by the hydraulic power unit is transmitted to the anchoring unit through a hydraulic pipeline S3, anchoring or anchoring releasing work is controlled, and pressure signal changes in the process can be transmitted to a ground system in real time.
The hydraulic power unit transmits hydraulic oil to the hydraulic control unit through a transmission pipeline S5, a control command is sent from the ground, the hydraulic control unit is transmitted through a logging cable S1 to the electronic unit and then controlled through a transmission control S2, the hydraulic pressure provided by the hydraulic power unit is transmitted to the cutting unit through a hydraulic pipeline S7, the cutter head of the cutting unit is controlled to be opened or recovered, and pressure change in the process can be transmitted to a ground system in real time. When the cutter head of the cutting unit is opened, the cutting motor rotates under the control of the ground to cut the underground pipe column.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A cable driven downhole cutting apparatus comprising a surface system (1) and a downhole cutting tool (50);
the ground system (1) is connected with the underground cutting instrument (50) through a logging cable (2);
the underground cutting instrument (50) comprises a cable joint (3), a centralizer (4), an electronic unit (6), a hydraulic balance oil tank (7), a hydraulic power unit (8), a hydraulic control unit (9), an anchoring unit (10), a cutting unit (11) and a cutter head fixing barrel (12) which are mechanically connected in sequence; the logging cable (2) is mechanically connected with the cable connector (3) and supplies power to the centralizer (4), the hydraulic control unit (9) and the anchoring unit (10), and the logging cable (2) is connected with the electronic unit (6) for underground communication; the hydraulic control unit (9) is connected with the hydraulic balance oil tank (7) and the hydraulic power unit (8) to drive the cutting unit (11) to cut;
the anchoring unit (10) has an anchoring arm (101), the cutting unit (11) has a cutting arm (121), and the cutting arm (121) is arranged on the cutter head fixing cylinder (12).
2. A cable driven downhole cutting device according to claim 1, wherein a magnetic positioning (5) is further arranged between the centralizer (4) and the electronics unit (6).
3. A cable driven downhole cutting device according to claim 1, wherein the anchoring unit (10) is internally provided with a first safety recovery unit for retrieving the anchoring arm (101) inside the instrument; the hydraulic power unit (8) drives the first safety recovery unit to work.
4. A wireline driven downhole cutting device according to claim 1, wherein the cutting unit (11) is internally provided with a second safety recovery unit for retrieving the cutting arm (121) inside the instrument; the hydraulic power unit (8) drives the second safety recovery unit to work.
5. A wireline driven downhole cutting device according to claim 1, wherein the hydraulic control unit (9) is adapted to distribute high pressure hydraulic oil provided by the hydraulic power unit (8) to the individual performing unit driven cutting units (11) for cutting;
two pressure sensors are set in the hydraulic control unit (9) for monitoring the pushing pressure of the anchoring arm (101) and the cutting arm (121).
6. A wireline driven downhole cutting device according to claim 1, wherein the hydraulic power unit (8) comprises a dc countless motor and a hydraulic ram pump for powering other performing actions.
7. A cable driven downhole cutting device according to claim 1, wherein the anchoring unit (10) provides the cutting unit (11) with a counter torque during cutting, the anchoring arms (101) of the anchoring unit (10) being a plurality of evenly spaced folding robotic arms; the contact position of the anchoring arm (101) and the inner wall of the pipe column is provided with a sharp protruding position;
the material hardness of the sharp protruding position is HRC55 or more.
8. A cable driven downhole cutting device according to claim 1, wherein the cutting arm (121) of the cutting unit (11) is a plurality of evenly distributed cutting bits; the blade material of the cutting knife head is high-speed tool steel.
9. A method of controlling a wireline-driven downhole cutting device, comprising the steps of:
when the underground cutting instrument (50) is put from the ground to a position where a downhole pipe string needs to be cut, a command is sent by the ground system (1) and the hydraulic power unit is started through the electronic unit (6);
the ground system (1) sends an anchoring command, the electronic unit (6) controls an electromagnetic valve of the hydraulic control unit to introduce hydraulic pressure into the anchoring unit (10), so that an anchoring arm (101) of the anchoring unit (10) is expanded and contacts the inner wall of the underground pipe column to center the underground cutting instrument (50);
the ground system (1) sends a command to enable the cutting unit (11) to rotate through the electronic unit (6) to drive the cutting arm (121) to rotate, the electronic unit (6) controls the hydraulic pressure of the electromagnetic valve of the hydraulic control unit to enable the cutter head cutting arm to be opened, and therefore the pipe column is cut off from the inside to the outside to complete underground cutting operation.
10. The method of claim 9, wherein the cable-driven downhole cutting device comprises a downhole motor,
when the power supply of the underground cutting instrument (50) fails, the safety recovery unit enables the anchoring arm (101) and the cutting arm (121) to automatically recover and release anchoring and cutting actions under the condition of no power supply, and the anchoring and cutting actions are recovered to the inside of the instrument.
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| CN202110189364.9A CN112855060A (en) | 2021-02-19 | 2021-02-19 | Cable-driven underground cutting instrument and control method |
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| CN202110189364.9A CN112855060A (en) | 2021-02-19 | 2021-02-19 | Cable-driven underground cutting instrument and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116181265A (en) * | 2023-03-22 | 2023-05-30 | 中国地质大学（北京） | Underground electric control cutting tool and application method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660394A (en) * | 2009-09-16 | 2010-03-03 | 余金海 | Single core cable oil field deep well dredging instrument |
| CN103562488A (en) * | 2011-05-31 | 2014-02-05 | 韦尔泰克有限公司 | Downhole tubing cutter tool |
| CN104040106A (en) * | 2011-11-04 | 2014-09-10 | 普拉德研究及开发股份有限公司 | Method and system for an automatic milling operation |
| WO2016010436A1 (en) * | 2014-07-17 | 2016-01-21 | C6 Technologies As | A petroleum well downhole mechanical services platform tool |
| CN105370231A (en) * | 2014-08-22 | 2016-03-02 | 中国石油化工股份有限公司 | Cutting method for tubular column in oil-gas well |
| CN105401900A (en) * | 2015-11-19 | 2016-03-16 | 北京美高科技发展有限公司 | Cable type electrohydraulic control pipe cutting tool |
| US20160348455A1 (en) * | 2015-05-28 | 2016-12-01 | Weatherford Technology Holdings, Llc | Cutter assembly for cutting a tubular |
| CN108468523A (en) * | 2018-05-07 | 2018-08-31 | 山东胜利石油装备产业技术研究院 | A kind of Multilayer casing pipe cutting knife |
| CN110644940A (en) * | 2019-11-08 | 2020-01-03 | 中国石油大学(北京) | Mechanical and electric cutting device for single-cylinder double-well casing of oil well |
| US20200224509A1 (en) * | 2015-09-16 | 2020-07-16 | Ardyne Technologies Limited | Downhole Cut and Pull Tool and Method of Use |
| CN111997554A (en) * | 2020-09-16 | 2020-11-27 | 中国海洋石油集团有限公司 | Deep well oil casing cutting tool |
-
2021
- 2021-02-19 CN CN202110189364.9A patent/CN112855060A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660394A (en) * | 2009-09-16 | 2010-03-03 | 余金海 | Single core cable oil field deep well dredging instrument |
| CN103562488A (en) * | 2011-05-31 | 2014-02-05 | 韦尔泰克有限公司 | Downhole tubing cutter tool |
| CN104040106A (en) * | 2011-11-04 | 2014-09-10 | 普拉德研究及开发股份有限公司 | Method and system for an automatic milling operation |
| WO2016010436A1 (en) * | 2014-07-17 | 2016-01-21 | C6 Technologies As | A petroleum well downhole mechanical services platform tool |
| CN105370231A (en) * | 2014-08-22 | 2016-03-02 | 中国石油化工股份有限公司 | Cutting method for tubular column in oil-gas well |
| US20160348455A1 (en) * | 2015-05-28 | 2016-12-01 | Weatherford Technology Holdings, Llc | Cutter assembly for cutting a tubular |
| US20200224509A1 (en) * | 2015-09-16 | 2020-07-16 | Ardyne Technologies Limited | Downhole Cut and Pull Tool and Method of Use |
| CN105401900A (en) * | 2015-11-19 | 2016-03-16 | 北京美高科技发展有限公司 | Cable type electrohydraulic control pipe cutting tool |
| CN108468523A (en) * | 2018-05-07 | 2018-08-31 | 山东胜利石油装备产业技术研究院 | A kind of Multilayer casing pipe cutting knife |
| CN110644940A (en) * | 2019-11-08 | 2020-01-03 | 中国石油大学(北京) | Mechanical and electric cutting device for single-cylinder double-well casing of oil well |
| CN111997554A (en) * | 2020-09-16 | 2020-11-27 | 中国海洋石油集团有限公司 | Deep well oil casing cutting tool |
Non-Patent Citations (1)
| Title |
|---|
| 李爱农等, 武汉：华中科技大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116181265A (en) * | 2023-03-22 | 2023-05-30 | 中国地质大学（北京） | Underground electric control cutting tool and application method thereof |
| CN116181265B (en) * | 2023-03-22 | 2023-11-14 | 中国地质大学（北京） | Underground electric control cutting tool and application method thereof |
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