CN118686559B - Automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of oil field and control method - Google Patents
Automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of oil field and control method Download PDFInfo
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- CN118686559B CN118686559B CN202411186978.1A CN202411186978A CN118686559B CN 118686559 B CN118686559 B CN 118686559B CN 202411186978 A CN202411186978 A CN 202411186978A CN 118686559 B CN118686559 B CN 118686559B
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- 238000000034 method Methods 0.000 title claims abstract description 18
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- 238000006243 chemical reaction Methods 0.000 claims description 8
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- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 abstract description 4
- 210000000080 chela (arthropods) Anatomy 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 1
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Classifications
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/165—Control or monitoring arrangements therefor
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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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
- E21B19/163—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe piston-cylinder actuated
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- Mechanical Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
本发明属于修井自动液压钳技术领域，尤其为一种油田智能修井作业用自动液压钳夹紧打滑保护装置及控制方法，包括机架以及安装在所述机架一端表面的保护组件，所述机架的侧面固定安装有导杆限位座，通过检测压力变送器换算得出的扭矩曲线与第一测力传感器、第二测力传感器测得力乘力臂的扭矩曲线趋势，判定液压钳背钳是否正常工作，以及通过对比液压马达的压力变送器压差和第一测力传感器、第二测力传感器的曲线数据背离的状态，判定液压钳背钳是否处于打滑状态，及时准确检测背钳打滑的非正常工作状态，通过控制系统控制液压钳停机并报警提示，保证设备在工作中的本质安全。
The present invention belongs to the technical field of automatic hydraulic pliers for well repair, and in particular to an automatic hydraulic pliers clamping and slippage protection device and control method for intelligent well repair operations in oil fields, comprising a frame and a protection component installed on the surface of one end of the frame, a guide rod limit seat fixedly installed on the side of the frame, and judging whether the hydraulic pliers back-up pliers are working normally by detecting the torque curve converted by the pressure transmitter and the torque curve trend of the force multiplied by the force arm measured by the first force sensor and the second force sensor, and judging whether the hydraulic pliers back-up pliers are in a slippage state by comparing the pressure difference of the pressure transmitter of the hydraulic motor and the state of deviation of the curve data of the first force sensor and the second force sensor, timely and accurately detecting the abnormal working state of the back-up pliers slippage, and controlling the hydraulic pliers to stop and alarm through the control system to ensure the inherent safety of the equipment during operation.
Description
Technical Field
The invention belongs to the technical field of automatic hydraulic tongs for well repair, and particularly relates to an automatic hydraulic tongs clamping and slipping protection device for intelligent well repair operation of an oil field and a control method.
Background
The automatic hydraulic pliers have the functions of automatic extension and retraction, automatic screwing-off and resetting and the like, the original manual operation push-pull hydraulic pliers are replaced in workover rig operation, the labor intensity and the safety risk are reduced, the automatic hydraulic pliers are widely used in the current workover operation process, when the pipe column threads are dismounted in the workover operation process, the factors such as diameter deviation of the pipe column, abrasion of the hydraulic pliers tooth plate, misalignment of the jaw and the center of the pipe column and the like can cause insufficient contact between the back pliers tooth plate and the surface of the pipe column, the biting force is reduced, relative slipping movement between the back pliers tooth plate and the surface of the pipe column is realized, the conventional manual operation hydraulic pliers adopt a mode of tying a tail rope on a derrick by adopting a steel wire rope, and when the back pliers slip main pliers continuously rotate, torque is counteracted by the safety tail rope, so that the safety of personnel and equipment is ensured.
The existing automatic shackle loading and unloading device cannot adopt a safety tail rope mode any more, and back-up wrench slip detection and protection control are not available, so that torque of the main wrench during shackle loading and unloading after back-up wrench slip can be transmitted to a suspender and other non-torque bearing parts, and serious faults and damages of the hydraulic wrench under abnormal working conditions are caused.
In order to solve the problems, the application provides an automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of an oil field and a control method.
Disclosure of Invention
To solve the problems set forth in the background art. The invention provides an automatic hydraulic clamp clamping and slipping protection device for intelligent well workover in an oil field and a control method thereof, which are used for judging whether a hydraulic clamp back-up clamp works normally or not by detecting a torque curve converted by a pressure transmitter and a torque curve trend of a force multiplication arm measured by a first force sensor and a second force sensor, and judging whether the hydraulic pliers back-ups are in a slipping state or not by comparing the pressure difference of the pressure transmitter of the hydraulic motor with the curve data deviating state of the first force transducer and the second force transducer, timely and accurately detecting the abnormal working state of the back-ups slipping, controlling the hydraulic pliers to stop and giving an alarm through a control system, and ensuring the intrinsic safety of equipment in working.
The automatic hydraulic clamp clamping and slipping protection device for the intelligent well workover treatment of the oil field comprises a frame and a protection assembly arranged on one end surface of the frame, wherein a guide rod limiting seat is fixedly arranged on the side surface of the frame.
The protection assembly comprises a hydraulic clamp main clamp and a hydraulic clamp back clamp, a hydraulic motor is arranged on the side face of the hydraulic clamp main clamp, a pressure transmitter is arranged on the surface of the hydraulic motor, a rear guide rod seat is fixedly arranged at the tail of the hydraulic clamp main clamp, and a back clamp tail seat is fixedly arranged at one end of the hydraulic clamp back clamp.
The pressure transmitter is connected and communicated with an oil inlet and an oil outlet of the hydraulic motor.
The surface of the guide rod limiting seat is provided with a hydraulic clamp rear guide rod, and the hydraulic clamp is mainly clamped above the hydraulic clamp back-up clamp.
The bottom end of the rear guide rod of the hydraulic clamp penetrates through the back-up clamp tail seat, and the middle end of the rear guide rod of the hydraulic clamp penetrates through the rear guide rod seat.
The rear guide rod of the hydraulic clamp is rotationally connected with the guide rod limiting seat, the back-up clamp tail seat and the rear guide rod seat.
The back-up wrench is characterized in that a first force transducer and a second force transducer are arranged in the back-up wrench tail seat, and an end cover is arranged in the back-up wrench tail seat.
As the automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of the oil field, the number of the end covers is two, and the two groups of end covers are symmetrically distributed on two sides inside the back-up clamp tailstock.
As the automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of the oil field, the first force transducer and the second force transducer are preferably fixed on the surfaces of two groups of end covers respectively.
The invention also provides a control method of the automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of the oil field, which comprises the following steps:
s1, firstly, starting the screwing or unscrewing, measuring the oil inlet and return pressure difference of a hydraulic motor through a pressure transmitter, and then converting the screwing or unscrewing torque through a pressure difference torque relation diagram according to the type of the hydraulic pliers;
S2, detecting the force generated in the process of screwing and unscrewing by a first force measuring sensor and a second force measuring sensor which are arranged on a back-up wrench tailstock, multiplying the force by a force arm to obtain screwing and unscrewing torque, and converting a torque curve obtained by a pressure transmitter through a pressure torque relation diagram into a synchronous increasing and reducing relation with torque curves of force multiplied by the force arm measured by the first force measuring sensor and the second force measuring sensor;
S3, when the torque curve obtained through conversion of the pressure transmitter is the same as the torque curve trend of the force multiplication force arm measured by the first force measuring sensor and the second force measuring sensor and the torque data fluctuation is 0-25 KN.m, judging that the hydraulic pliers back-up tongs do not slip, namely, work normally;
S4, when the main pliers of the hydraulic pliers drive the back pliers of the hydraulic pliers to rotate until the back pliers of the hydraulic pliers are propped against the back guide rod seat through the back guide rod of the hydraulic pliers, the back guide rod of the hydraulic pliers is limited to rotate by the guide rod limiting seat, at the moment, the pressure difference of an oil inlet and an oil return port of a screwing-on or unscrewing hydraulic motor is increased, because the back guide rod of the hydraulic pliers is limited to rotate by the guide rod limiting seat, the back guide rod of the hydraulic pliers is applied to the guide rod limiting seat, the first force sensor and the second force sensor are not subjected to force from the back guide rod of the hydraulic pliers, and the measured data is 0;
S5, judging that the hydraulic pliers are in a hydraulic pliers back-up pliers slipping state by comparing the pressure difference of the pressure transmitter of the hydraulic motor with the curve data deviating state of the first force transducer and the curve data of the second force transducer, namely, alarming and stopping.
Compared with the prior art, the invention has the beneficial effects that:
1. The pressure transmitter is connected and communicated with the oil inlet and outlet of the hydraulic motor, so that the pressure transmitter can measure the oil inlet and outlet pressure difference of the motor, the oil inlet and outlet pressure difference is converted into the shackle torque according to a pressure difference torque relation diagram, the force generated in the shackle process is detected through the first force sensor and the second force sensor, and when the torque curve converted by the pressure transmitter is the same as the torque curve trend of the force multiplied by the force arm measured by the first force sensor and the second force sensor and the torque data fluctuation is 0-25 KN.m, the hydraulic pliers back tongs are judged to have no slipping, and the abnormal working state of the back tongs slipping can be timely and accurately detected;
2. The rear guide rod of the hydraulic clamp is limited by the rear guide rod seat, when the main clamp of the hydraulic clamp drives the back clamp of the hydraulic clamp to rotate through the rear guide rod of the hydraulic clamp until the rear guide rod of the hydraulic clamp abuts against the rear guide rod seat, the rear guide rod of the hydraulic clamp is limited by the guide rod limiting seat to rotate, at the moment, the pressure difference of the oil inlet and return ports of the hydraulic clamp motor is increased, the rear guide rod of the hydraulic clamp is limited by the guide rod limiting seat to rotate, the rear guide rod of the hydraulic clamp is applied to the guide rod limiting seat, the pressure difference of the pressure transmitter of the hydraulic motor and the curve data of the first force sensor and the second force sensor are compared, namely, the torque curve of the pressure transmitter is normally increased, and when the torque curve of the first force sensor and the torque curve of the second force sensor is in a lower trend or is free from fluctuation, the hydraulic clamp is judged to be in a slipping state of the back clamp of the hydraulic clamp, namely, an alarm is stopped, the hydraulic clamp is controlled by a control system to stop and an alarm prompt, and the intrinsic safety of equipment is ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the protection component of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the internal part structure of the guide rod limiting seat in the present invention;
FIG. 4 is a schematic diagram of torque curves of the hydraulic pliers of the present invention when slip occurs;
FIG. 5 is a schematic diagram of torque curves of the hydraulic pliers of the present invention when the pliers are operating normally;
FIG. 6 is a schematic diagram of the pressure-torque relationship of the present invention (when the hydraulic pliers are 25000 KN.m).
In the figure:
1. A frame; 2, a protection component, 3, a guide rod limiting seat, 301, a hydraulic clamp rear guide rod, 302, a first force transducer, 303, a second force transducer, 4, a hydraulic clamp main clamp, 5, a hydraulic clamp back clamp, 401, a hydraulic motor, 402, a pressure transmitter, 403, a rear guide rod seat, 501, a back clamp tail seat, 502 and an end cover.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a technical scheme as shown in fig. 1-4, and an automatic hydraulic clamp clamping and slipping protection device for intelligent well workover in an oil field comprises a frame 1 and a protection assembly 2 arranged on one end surface of the frame 1, wherein a guide rod limiting seat 3 is fixedly arranged on the side surface of the frame 1 and used for limiting the movement range of a guide rod 301 behind the hydraulic clamp.
The protection assembly 2 comprises a hydraulic clamp main clamp 4 and a hydraulic clamp back clamp 5, a hydraulic motor 401 is arranged on the side face of the hydraulic clamp main clamp 4, a pressure transmitter 402 is arranged on the surface of the hydraulic motor 401, a rear guide rod seat 403 is fixedly arranged at the tail of the hydraulic clamp main clamp 4, a back clamp tail seat 501 is fixedly arranged at one end of the hydraulic clamp back clamp 5, the pressure transmitter 402 is connected with and communicated with an oil inlet and an oil outlet of the hydraulic motor 401, the pressure difference of the oil inlet and the oil outlet of the hydraulic motor 401 in the screwing-off process is measured, and the torque in the hydraulic clamp work is indirectly obtained through a hydraulic clamp torque and pressure conversion meter.
The surface of guide arm spacing seat 3 is provided with behind the hydraulic pressure pincers guide arm 301, hydraulic pressure pincers main pincers 4 are located the top of hydraulic pressure pincers back-up clamp 5, the bottom of behind the hydraulic pressure pincers guide arm 301 runs through in the inside of back-up clamp tailstock 501, the middle-end of behind the hydraulic pressure pincers guide arm 301 runs through in the inside of back-up guide arm seat 403, bear the vast majority moment of torque that produces in the shackle, be the rotation connection between behind the hydraulic pressure pincers guide arm 301 and guide arm spacing seat 3, back-up clamp tailstock 501, back-up guide arm seat 403, the internally mounted of back-up clamp tailstock 501 has first force transducer 302 and second force transducer 303, the inside of back-up clamp tailstock 501 is provided with end cover 502, the quantity of end cover 502 has two sets of end cover 502 is the symmetry form and distributes in the inside both sides of back-up clamp tailstock 501, first force transducer 302 and second force transducer 303 are fixed in the surface of two sets of end cover 502 respectively.
Firstly, starting up or down, measuring oil inlet and return pressure difference of a hydraulic motor 401 through a pressure transmitter 402, and converting the oil inlet and return pressure difference into up and down torque according to a 25000 KN.m hydraulic clamp product related pressure difference torque relation diagram;
At this time, the first force sensor 302 and the second force sensor 303 mounted on the back-up tail seat 501 detect the force generated in the process of breaking out, the breaking out torque is obtained by multiplying the force by a force arm, the torque curve obtained by conversion of the pressure transmitter 402 and the torque curve of the force multiplication force arm measured by the first force sensor 302 and the second force sensor 303 are in a synchronous increasing and decreasing relation, that is, the torque curve obtained by the pressure transmitter 402 through a pressure transformation relation diagram and the torque obtained by multiplying the force arm measured by the first force sensor 302 and the second force sensor 303 are in the same relation;
When the torque curve converted by the pressure transmitter 402 is the same as the torque curve trend of the force multiplied by the force arm measured by the first force sensor 302 and the second force sensor 303 and the torque data fluctuation is 0-25 KN.m, judging that the hydraulic pliers back-up wrench 5 does not slip, namely, works normally;
when the hydraulic clamp main clamp 4 drives the hydraulic clamp back clamp 5 to rotate through the hydraulic clamp back guide rod 301 until the hydraulic clamp back guide rod abuts against the back guide rod seat, the hydraulic clamp back guide rod 301 is limited to rotate by the guide rod limiting seat 3, at the moment, the pressure difference of an oil inlet and an oil return port of the screwing-on or unscrewing hydraulic motor 401 is increased, the hydraulic clamp back guide rod 301 is limited to rotate by the guide rod limiting seat 3, the hydraulic clamp back guide rod 301 is applied to the guide rod limiting seat 3, and the first force sensor 302 and the second force sensor 303 are not subjected to force from the hydraulic clamp back guide rod 301, so that measured data are 0;
by comparing the pressure difference of the pressure transmitter 402 of the hydraulic motor 401 with the deviating state of the curve data of the first force transducer 302 and the second force transducer 303, the hydraulic clamp is judged to be in the slipping state of the hydraulic clamp back-up clamp 5, namely the alarm is stopped.
The invention also provides a control method of the automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of the oil field, which comprises the following steps:
s1, firstly, starting up or down, measuring the oil inlet and return pressure difference of a hydraulic motor 401 through a pressure transmitter 402, and converting the pressure difference into the torque for up and down according to a pressure difference torque relation diagram;
s2, at the moment, a first force transducer 302 and a second force transducer 303 which are arranged on a back-up tong tailstock 501 detect the force generated in the process of breaking out, the breaking out torque is obtained through multiplication of the force and a force arm, and a torque curve obtained through conversion of a pressure transmitter 402 and a torque curve of the force multiplied by the force arm measured by the first force transducer 302 and the second force transducer 303 are in a synchronous increasing and decreasing relation;
S3, when the torque curve obtained through conversion of the pressure transmitter 402 is the same as the torque curve trend of the force multiplication force arm measured by the first force sensor 302 and the second force sensor 303 and the torque data fluctuation is 0-25 KN.m, judging that the hydraulic pliers back-up wrench 5 does not slip, namely, works normally;
S4, when the hydraulic clamp main clamp 4 drives the hydraulic clamp back-up clamp 5 to rotate through the hydraulic clamp back-up clamp guide rod 301 until the hydraulic clamp back-up clamp guide rod abuts against the back guide rod seat, the hydraulic clamp back-up clamp guide rod 301 is limited to rotate by the guide rod limiting seat 3, at the moment, the pressure difference of an oil inlet and an oil return port of the screwing-on or unscrewing hydraulic motor 401 is increased, the hydraulic clamp back-up clamp guide rod 301 is rotated by the guide rod limiting seat 3, the hydraulic clamp back-up clamp guide rod 301 is applied to the guide rod limiting seat 3, the first force sensor 302 and the second force sensor 303 are not subjected to force from the hydraulic clamp back-up clamp guide rod 301, and measured data are 0;
s5, comparing the pressure difference of the pressure transmitter 402 of the hydraulic motor 401 with the curve data of the first force transducer 302 and the second force transducer 303 to deviate, and judging that the hydraulic pliers are in the slipping state of the hydraulic pliers back-up pliers 5, namely, alarming and stopping.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and the present invention is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The automatic hydraulic clamp clamping and slipping protection device for intelligent well workover in an oil field comprises a frame (1) and a protection component (2) arranged on one end surface of the frame (1), and is characterized in that a guide rod limiting seat (3) is fixedly arranged on the side surface of the frame (1), the protection component (2) comprises a hydraulic clamp main clamp (4) and a hydraulic clamp back clamp (5), a hydraulic motor (401) is arranged on the side surface of the hydraulic clamp main clamp (4), a pressure transmitter (402) is arranged on the surface of the hydraulic motor (401), a rear guide rod seat (403) is fixedly arranged at the tail of the hydraulic clamp main clamp (4), a back clamp tail seat (501) is fixedly arranged at one end of the hydraulic clamp back clamp (5), a first force sensor (302) and a second force sensor (303) are arranged in the back clamp tail seat (501), oil return pressure difference of the hydraulic motor (401) is measured through the pressure transmitter (402), and force generated in a screwing-off process is detected through the first force sensor (302) and the second force sensor (303);
The torque curve obtained through conversion of the pressure transmitter is detected, the torque curve trend of the force multiplication force arm is measured by the first force transducer and the second force transducer, whether the hydraulic clamp back-up wrench works normally is judged, and whether the hydraulic clamp back-up wrench is in a slipping state is judged by comparing the pressure difference of the pressure transmitter of the hydraulic motor with the curve data deviating state of the first force transducer and the curve data of the second force transducer.
2. The automatic hydraulic clamp clamping and slipping protection device for intelligent workover in oil fields is characterized in that the hydraulic clamp main clamp (4) is positioned above the hydraulic clamp back clamp (5).
3. The automatic hydraulic clamp clamping and slipping protection device for intelligent well workover in an oil field is characterized in that the pressure transmitter (402) is connected and communicated with an oil inlet and an oil outlet of the hydraulic motor (401).
4. The automatic hydraulic clamp clamping and slipping protection device for intelligent workover in oil fields is characterized in that a hydraulic clamp rear guide rod (301) is arranged on the surface of the guide rod limiting seat (3).
5. The automatic hydraulic clamp clamping and slipping protection device for intelligent well workover in oil fields of claim 4 is characterized in that the bottom end of the rear hydraulic clamp guide rod (301) penetrates through the back-up clamp tail seat (501), and the middle end of the rear hydraulic clamp guide rod (301) penetrates through the rear guide rod seat (403).
6. The automatic hydraulic clamp clamping and slipping protection device for intelligent workover in oil fields is characterized in that a rear guide rod (301) of the hydraulic clamp is in rotary connection with a guide rod limiting seat (3), a back-up clamp tail seat (501) and a rear guide rod seat (403).
7. The automatic hydraulic clamp clamping and slipping protection device for intelligent workover in oil fields is characterized in that an end cover (502) is arranged in a back-up clamp tailstock (501).
8. The automatic hydraulic clamp clamping and slipping protection device for intelligent well servicing in an oil field, as set forth in claim 7, is characterized in that the number of the end covers (502) is two, and the two groups of the end covers (502) are symmetrically distributed on two sides inside the back-up clamp tailstock (501).
9. The automatic hydraulic clamp clamping and slipping protection device for intelligent well servicing in an oil field, as set forth in claim 7, wherein the first load cell (302) and the second load cell (303) are respectively fixed on the surfaces of two sets of end caps (502).
10. A control method for clamping and slipping protection device by adopting the automatic hydraulic clamp for intelligent well workover operation of an oil field according to any one of claims 1 to 9, comprising the following steps:
S1, firstly, starting the screwing or unscrewing, measuring the oil inlet and return pressure difference of a hydraulic motor (401) through a pressure transmitter (402), and converting the oil inlet and return pressure difference into screwing and unscrewing torque according to a pressure difference torque relation diagram;
S2, a first force transducer (302) and a second force transducer (303) which are arranged on a back-up wrench tailstock (501) detect the force generated in the process of screwing and unscrewing, screwing and unscrewing torque is obtained through multiplication of the force and a force arm, and a torque curve obtained through conversion of a pressure transmitter (402) and a torque curve of the force multiplied by the force arm measured by the first force transducer (302) and the second force transducer (303) are in a synchronous increasing and decreasing relation;
S3, when the torque curve obtained by conversion of the pressure transmitter (402) is the same as the torque curve trend of the force multiplied by the force arm measured by the first force sensor (302) and the second force sensor (303) and the torque data fluctuation is 0-25 KN.m, judging that the hydraulic pliers back-up wrench (5) does not slip, namely, works normally;
S4, when the hydraulic clamp main clamp (4) drives the hydraulic clamp back-up clamp (5) to rotate through the hydraulic clamp back-up guide rod (301) until the hydraulic clamp back-up guide rod abuts against the back guide rod seat, the hydraulic clamp back-up guide rod (301) is limited to rotate by the back guide rod seat (403), at the moment, the pressure difference of an oil inlet and return port of a screwing-on or unscrewing hydraulic motor (401) is increased, the hydraulic clamp back-up guide rod (301) is limited to rotate by the back guide rod seat (403), the hydraulic clamp back-up guide rod (301) is applied to the back guide rod seat (403), and the first force sensor (302) and the second force sensor (303) are not subjected to force from the hydraulic clamp back-up guide rod (301), so that measured data are 0;
S5, judging that the hydraulic pliers are in a slipping state of the hydraulic pliers back pliers (5) through comparing the pressure difference of the pressure transmitter (402) of the hydraulic motor (401) with the curve data of the first force transducer (302) and the curve data of the second force transducer (303), namely, alarming and stopping.
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| CN202411186978.1A CN118686559B (en) | 2024-08-28 | 2024-08-28 | Automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of oil field and control method |
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| CN202411186978.1A CN118686559B (en) | 2024-08-28 | 2024-08-28 | Automatic hydraulic clamp clamping and slipping protection device for intelligent well workover operation of oil field and control method |
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| CN119373432A (en) * | 2025-01-02 | 2025-01-28 | 成都汉莎石油科技有限公司 | A control system, method and equipment for remote make-up and make-up of oil pipes under pressure |
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| US10605016B2 (en) * | 2017-11-16 | 2020-03-31 | Weatherford Technology Holdings, Llc | Tong assembly |
| CN212337198U (en) * | 2020-05-20 | 2021-01-12 | 濮阳市富润德石油工程有限公司 | Oil pipe tongs without tooth marks |
| CN219654653U (en) * | 2023-05-18 | 2023-09-08 | 西安鸿源能信智能装备有限公司 | Full-automatic hydraulic power tongs device for oil field well workover and well workover platform |
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| US4938109A (en) * | 1989-04-10 | 1990-07-03 | Carlos A. Torres | Torque hold system and method |
| CN112031682A (en) * | 2020-08-13 | 2020-12-04 | 无锡智瀚能源科技装备与服务有限公司 | Power tong control system, operation method thereof and workover rig comprising power tong control system |
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