CN112031682A - Power tong control system, operation method thereof and workover rig comprising power tong control system - Google Patents
Power tong control system, operation method thereof and workover rig comprising power tong control system Download PDFInfo
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- CN112031682A CN112031682A CN202010812729.4A CN202010812729A CN112031682A CN 112031682 A CN112031682 A CN 112031682A CN 202010812729 A CN202010812729 A CN 202010812729A CN 112031682 A CN112031682 A CN 112031682A
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- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000003993 interaction Effects 0.000 claims description 5
- 239000003129 oil well Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 70
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000011017 operating method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008713 feedback mechanism Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 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
- E21B19/165—Control or monitoring arrangements therefor
- E21B19/166—Arrangements of torque limiters or torque indicators
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Abstract
The invention discloses a power tong control system for a workover rig, which comprises a main tong and a back-up tong, wherein the power tong control system comprises a hydraulic pump, a controller, a hydraulic proportional valve, a shift valve and a main tong parameter sensor, and the hydraulic proportional valve is configured to distribute power oil provided by the hydraulic pump to a main tong motor and a back-up tong oil cylinder according to a preset flow and a flow direction under the control of the controller; the gear shifting valve is configured to change the transmission mode of the main clamp transmission mechanism under the control of the controller so as to adjust the rotary gear of the main clamp; a master tong parameter sensor configured to detect an operating parameter of the master tong; the controller is configured to control the hydraulic proportional valve and the shift valve in real time based on the main tong operation parameters detected by the main tong parameter sensor to adjust the operation state of the main tong and/or the back-up tong. The invention also discloses an operation method of the power tong control system and an oil well repairing machine comprising the system.
Description
Technical Field
The present invention relates to the field of oil drilling workover rigs, and more particularly, to a power tong control system for a workover rig, a workover rig including the power tong control system, and a method of operating the power tong control system.
Background
In the oil exploitation process, workover is one of the important links. At present, most workover rigs in oil fields at home and abroad are manually operated, manual detection and positioning are realized, a small number of automatic workover rigs are semi-automatic, key actions are still determined according to experience of operators, the manual workload is greatly increased, the mining efficiency is reduced, and the personal safety of operators is influenced.
Therefore, it is highly desirable to develop an advanced and reliable fully automatic operation workover rig to maximize oil production efficiency and reduce the personal safety of operators.
Disclosure of Invention
The invention provides a power tong control system for a workover rig, which is used as a core component in an oil workover rig and can realize operations of righting an oil pipe/oil rod, aligning a notch, screwing (or fastening), unscrewing (or loosening) and the like in workover operation in a full-automatic mode, thereby realizing accurate control of automatic operation of the power tong.
Specifically, the power tong control system according to the present invention adds a sensor to the power tong that detects the operating parameters of the main tong (e.g., the number of revolutions and the torque). In the well repairing operation, power oil from an oil pump is accurately distributed to a main tong motor and a back-up tong oil cylinder through a hydraulic proportional valve, so that a main tong and a back-up tong are started to act simultaneously; after the back-up tong clamps an oil pipe/oil rod (the back-up tong is collectively called as an 'operation piece to be operated'), the main tong continues to work under the power oil provided by the hydraulic proportional valve, and meanwhile, a sensor arranged on the power tong can feed back the operation parameters of the main tong to a controller in real time; the controller can control the power oil output of the hydraulic proportional valve in real time by means of a PID control algorithm for example based on the operation parameters of the main tong so as to adjust the flow and the flow direction of the power oil distributed to the main tong and the back-up tong, thereby realizing the accurate control of tasks of tripping, fastening, stopping operation and the like of an oil pipe.
According to a first aspect of the present invention, there is provided a power tong control system for a workover rig, the power tong comprising a main tong configured to rotate a first part of an element to be operated via a main tong transmission mechanism under the drive of a main tong motor, and a back-up tong configured to grip a second part of the element to be operated by the work of a back-up tong cylinder so that the main tong cooperates with the back-up tong to perform make-up or break-out operations, wherein the power tong control system comprises a hydraulic pump for supplying power oil, a controller, a hydraulic proportional valve, a shift valve, and a main tong parameter sensor, wherein the hydraulic proportional valve is configured to distribute the power oil supplied by the hydraulic pump to the main tong motor and the back-up tong cylinder at a predetermined flow rate and direction under the control of the controller; the gear shifting valve is configured to change the transmission mode of the main clamp transmission mechanism under the control of the controller so as to adjust the rotary gear of the main clamp; the main tong parameter sensor is configured to detect an operating parameter of the main tong; and the controller is configured to control the hydraulic proportional valve and the shift valve in real time based on the main tong operation parameters detected by the main tong parameter sensor to adjust the operation state of the main tong and/or the back-up tong.
According to an alternative embodiment, the main tong parameter sensor comprises a main tong number sensor for detecting the number of revolutions of the main tong, and/or a torque sensor for detecting the rotational torque of the main tong.
According to an alternative embodiment, the operating state of the main tong comprises the rotational gear, the rotational direction and the rotational torque of the main tong, and the operating state of the back-up tong comprises the clamping force and the direction of movement of the back-up tong.
According to an alternative embodiment, the power tong control system further comprises a proportional valve power amplifier connected between the hydraulic proportional valve and the controller.
According to an alternative embodiment, the power tong control system further comprises human-machine interaction means for displaying the operating status of the power tong control system to a user and/or for receiving user input.
According to an alternative embodiment, the item to be operated comprises an oil pipe and an oil rod.
According to a second aspect of the invention, there is also provided an oil well rig comprising the power tong control system described above.
According to a third aspect of the present invention, there is also provided a method of operating the power tong control system described above, wherein the method of operating comprises the steps of: distributing power oil with preset flow and flow direction to a main tong motor and a back-up tong oil cylinder to simultaneously start the main tong and the back-up tong; detecting the operation parameters of the main tong in real time; and adjusting the operation state of the main tong and/or the back-up tong in real time based on the detected operation parameters of the main tong.
According to an alternative embodiment, the main tong defaults to rotating in high gear when activated during make-up operation, the method further comprising: and detecting the number of rotation turns of the main tong in real time, further detecting the rotation torque of the main tong when the number of rotation turns reaches a first preset number of turns, and switching the rotation gear of the main tong to a low gear if the rotation torque of the main tong is in a first preset torque range.
According to an alternative embodiment, the operating method further comprises, in the make-up operation: the main tong is switched to a low gear, the main tong's turning torque is detected in real time, and when the main tong's turning torque is higher than a make-up torque limit, the main tong and the back-up tong are released.
According to an alternative embodiment, the operating method further comprises, in the make-up operation: after the main pliers and the back pliers are loosened, notch operation and main pliers switching to a high-speed gear are sequentially performed on the main pliers, so that the operation piece to be operated can be conveniently moved out of the jaw of the main pliers and the next screwing operation can be smoothly performed.
According to an alternative embodiment, the main tong, when activated, is by default rotated in low gear during break-out operations, the method of operation further comprising: and detecting the number of rotation turns of the main tong in real time, further detecting the rotation torque of the main tong when the number of rotation turns reaches a second preset number of turns, and switching the rotation gear of the main tong to a high gear if the rotation torque of the main tong is in a second preset torque range.
According to an alternative embodiment, the operating method further comprises, in the shackle operation: under the condition that the main tong is switched to a high-speed gear, the number of rotation turns of the main tong is detected in real time, when the number of rotation turns of the main tong reaches a third preset number of turns, the main tong and the back-up tong are loosened, and the main tong is switched to a low-speed gear.
According to an alternative embodiment, the operating method further comprises, in the shackle operation: after the main tong and the back-up tong are released and the main tong is switched to a low gear, a notching operation is performed on the main tong to facilitate the removal of the operation piece to be operated from the jaws of the main tong.
Advantageous advantages of the above described power tong control system and method of operation thereof according to the present invention include:
in pipe lowering and pipe lifting operations, the power tongs driven by the hydraulic motor and the hydraulic oil cylinder are adopted to replace the traditional manual shifting fork mechanism, so that the labor force participating in high-load workover operations is greatly reduced;
the feedback mechanism of the running state of the power tongs is provided, the rotating torque and the number of rotating turns of the power tongs can be effectively ensured, and the control precision is high;
the progress of the workover treatment can be adjusted in real time according to the current running state of the power tongs, for example, the operations such as gear shifting and reversing of the power tongs can be executed based on the rotating torque and the number of rotating circles of the main tongs, and the control effectiveness is high; and
the hydraulic clamp has good man-machine interaction function, the operation state of the equipment can be displayed to an operator in real time, and the operator can set relevant parameters of the hydraulic clamp by means of the operation panel.
Drawings
Other features and advantages of the system of the present invention will be apparent from, or are more particularly, described in the drawings incorporated herein, and in the detailed description which follows, together with the drawings, serve to explain certain principles of the invention.
FIG. 1 illustrates a schematic structural diagram of a power tong control system in accordance with an exemplary embodiment of the present invention;
fig. 2 shows a hydraulic supply diagram of a power tong control system according to an exemplary embodiment of the present invention, an
Figure 3 shows a flow chart of the specific working steps of the power tong control system of figure 1 in make-up and break-out operations.
Detailed Description
A power tong control system and a method of operating the same according to the present invention will now be described, by way of example, with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention to those skilled in the art. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. Rather, it is contemplated that the invention may be practiced with any combination of the following features and elements, whether or not they relate to different embodiments. Thus, the following aspects, features, embodiments and advantages are merely illustrative and should not be considered elements or limitations of the claims except where explicitly recited in a claim(s).
Fig. 1 shows a schematic configuration of a power tong control system for use in a workover rig according to an exemplary embodiment of the present invention. The power tongs according to the invention are hydraulic power tongs, which comprise main tongs and back tongs, wherein the main tongs are used for driving a first part of an oil pipe (or an oil rod) to rotate through a main tong transmission mechanism under the driving of a main tong motor so as to complete make-up or break-out operation, and the back tongs are used for clamping a second part of the oil pipe (or the oil rod) so as to prevent the second part from rotating along with the rotary buckle of the main tongs in the process of making-up or making-up operation.
As shown in fig. 1, the main tong is driven by a main tong motor, the back-up tong is operated by the work of a back-up tong cylinder, and the power tong control system supplies power oil to the main tong and the back-up tong by means of a hydraulic pump (i.e., an "oil pump"). In particular, the power tong control system according to the invention comprises a hydraulic proportional valve, which may be selected as an electromagnetic hydraulic proportional directional valve (referred to simply as "electro-hydraulic proportional valve"), the power input end of which may be connected to the oil outlet of the oil pump via an oil delivery line, and the power output end of which may be connected to the main tong motor and the back-up tong oil cylinder via another oil delivery line, respectively, to distribute the power oil supplied by the oil pump to the main tong motor and the back-up tong oil cylinder at a predetermined flow rate and direction, thereby driving the main tong and the back-up tong to operate simultaneously. In addition, the power tong control system comprises a controller, for example a PLC controller ("programmable logic controller") to which the control inputs of the hydraulic proportional valves are connected, so that the distribution of the power oil delivered to the main tong and the back-up tong is controlled by the controller.
According to an optional example, the main clamp is provided with a rotation number sensor and/or a torque sensor, and the rotation number sensor and/or the torque sensor are used for detecting the operation parameters of the main clamp in real time and feeding back the operation parameters to the controller in real time. Based on the main tong operating parameters (e.g., the number of revolutions and/or the make-up torque), the controller can control the power oil output of the hydraulic proportional valve in real time by means of, for example, a PID control algorithm to adjust the flow and direction of the power oil distributed to the main tong and the back-up tong, thereby achieving accurate control of tasks such as make-up and break-out of the oil pipe.
The controller can control the power oil output of the hydraulic proportional valve through an electric signal, and a proportional valve amplifier is preferably arranged between the controller and the hydraulic proportional valve and used for carrying out signal adjustment and amplification operation on the control electric signal output by the controller so as to enable the control electric signal to be matched with a receivable signal of the hydraulic proportional valve.
According to an alternative example, the power tong control system may further comprise a shift valve which, under the control of the controller, can change the transmission mode of the main tong transmission, in particular its transmission ratio, so as to adjust the rotational gear (rotational speed gear) of the main tong. The controller can control the hydraulic proportional valve and the gear shifting valve in real time based on main tong operation parameters provided by the main tong parameter sensor so as to adjust the operation states of the main tong and the back-up tong, such as the rotation gear, the rotation direction and the rotation torque of the main tong, the clamping force and the movement direction of the back-up tong and the like.
Optionally, the power tong control system according to the invention also comprises human-machine interaction means, such as a touch screen or an operating panel, for displaying to a user the operating status of the power tong control system, in particular the main tong and the back-up tong, and/or for receiving user input, by means of which the operator can set target information of the power tong control system, such as a target number of revolutions of the main tong, a torque limit value of the main tong, etc.
Fig. 2 shows a hydraulic schematic of a power tong control system according to an exemplary embodiment of the invention. The oil conveying pipeline of the hydraulic station is provided with a pressure valve for adjusting oil pressure, and comprises a primary pressure valve 11, a secondary pressure valve 12, a secondary pressure solenoid valve 13 and the like, the oil conveying pipeline provides power oil for an electromagnetic type hydraulic proportional reversing valve 1 (called as an 'electro-hydraulic/hydraulic proportional valve' for short), a gear shifting solenoid valve 2 and a pipe supporting manipulator solenoid valve 3, and the hydraulic proportional valves can be respectively connected to a main tong motor 4 and a back-up tong oil cylinder 5 so as to distribute the power oil supplied by an oil pump to the main tong motor and the back-up tong oil cylinder according to preset flow and flow direction, so that the main tong and the back-up tong are driven to act simultaneously.
The main tong motor 4 is provided with a motor safety protection valve group 401 for performing active pressure relief when the oil pressure of the motor reaches a threshold value, so as to prevent internal parts of the motor from being damaged and ensure the normal operation of the motor. The output end of the gear shifting electromagnetic valve 2 is connected to the gear shifting oil cylinder 6 so as to realize gear shifting of the main tong under the control of the controller. The output end of the pipe supporting manipulator electromagnetic valve 3 is connected to a pipe supporting manipulator oil cylinder 7 and used for realizing oil pipe/oil rod centering operation. The gear shifting oil cylinder 6 and the pipe supporting manipulator oil cylinder 7 are respectively provided with an oil cylinder positioning and safety valve group 601, 701, which is used for keeping an oil cylinder piston at the original position when an oil pipe bursts, so as to prevent accidents.
Fig. 3 shows a flow chart of the steps of a particular method of operation of the power tong control system of fig. 1. The detailed work flow of the power tong control system in the make-up and break-out operations of the oil pipe will be described with reference to fig. 3, taking the oil pipe as an example of the operation object.
Upper buckle operation (lower pipe)
First, for each operation step involving the rotation of the main tong in the make-up work, the power tong control system stores a corresponding target number of rotations and a torque limit value, and each target number of rotations and torque limit value are preset by a user or are set by default by the system.
When the make-up operation is started, the controller controls the hydraulic proportional valve to distribute power oil to the main tong motor and the back-up tong oil cylinder according to a preset flow and a preset flow direction, so that the back-up tong and the main tong are started simultaneously, the main tong clamps a tubing coupling, the back-up tong clamps a fixed part of the tubing, and then the main tong hydraulic motor is automatically controlled to rotate clockwise under a high-speed gear, so that the main tong drives the tubing coupling to perform quick make-up operation. In the process of quick screwing, the number of rotation turns of the main tong is detected in real time, when the corresponding target number of rotation turns (which can be called as a first preset number of turns) is reached, the rotation torque of the main tong is detected by the torque sensor, and whether the torque is in a normal range or not is judged by the controller.
If the main tong rotational torque exceeds a predetermined normal range (which may be referred to as a "first predetermined torque range"), for example, too little torque, indicating that the tubing coupling has not been initially tightened, an alarm is issued by the controller to indicate or halt the operation of the power tong to facilitate servicing of the system by the operator. And if the main tong rotation torque is in the preset normal range, continuously executing the main tong gear shifting operation to shift the main tong gear to a low gear, so that the main tong completes the subsequent fastening operation at the low speed until the couplings of the upper oil pipe and the lower oil pipe are completely tightened. The "fully tightened" condition may also be determined based on the rotational torque of the main tong, e.g., when the rotational torque of the main tong is above the make-up torque limit, indicating that the tubing collar is fully tightened. After the tubing coupling is screwed down, the main tong and the back-up tong are loosened until the screwing-up operation is completed.
After the screwing operation is finished, the notch operation is further executed to automatically align the main clamp clamping mechanism notch and the main clamp shell notch, so that the oil pipe can be conveniently and smoothly moved out of the jaw and the next screwing operation can be smoothly carried out.
And in the process of notching, the notch position of the main clamp clamping mechanism is detected in real time. If the position of the shell notch is not aligned with the position of the shell notch, an alarm indication or the operation of the middle power pliers is sent out by the controller; if the notch positions are determined to be aligned with each other, the tubing is removed from the jaws and placed in the well while the main tong is switched back to the high gear in preparation for the next make-up operation.
Shackle operation (pipe)
Similarly, for each operating step in the break-out operation involving rotation of the main tong, a corresponding target number of revolutions and torque limit value are stored in the power tong control system, each preset by the user or by default by the system.
When the tripping operation is started, the controller simultaneously starts the back-up tong and the main tong, clamps the oil pipe by means of the back-up tong, and then automatically controls the hydraulic motor of the main tong to rotate along the anticlockwise direction under a low-speed gear, so that the main tong drives the oil pipe coupling to execute low-speed tripping operation. In the process of low-speed tripping, the number of rotation turns of the main tong is detected in real time, when the corresponding target number of rotation turns (which can be called as a second preset number of turns) is reached, the rotation torque of the main tong is detected by the torque sensor, and whether the torque is in a normal range or not is judged by the controller.
If the main tong rotation torque exceeds a predetermined normal range (which may be referred to as a "second predetermined torque range"), for example, the torque is too low, indicating a slipping phenomenon during a tripping operation of a sucker rod coupling, an alarm is sent by the controller to indicate or stop the operation of the power tong, so that an operator can conveniently overhaul the system. And if the main tong rotation torque is in the preset normal range, continuing to execute the main tong gear shifting operation to shift the main tong gear to a high-speed gear, so that the main tong completes the subsequent tripping operation at the high speed until the couplings of the upper tubing and the lower tubing are completely tripped. This "fully disengaged" condition may be determined based on the number of rotations of the main tong, for example, indicating that the tubing collar is fully disengaged when the number of rotations of the main tong in the high gear reaches a preset number of rotations (which may be referred to as a "third preset number"). After the tubing coupling is completely loosened, the main tong and the back-up tong are loosened, and the shackle operation is completed.
After the shackle operation is completed, the main tong is switched to a low gear again to prepare for the next shackle operation; and then, the notch operation is executed to automatically align the notch of the main tong clamping mechanism and the notch of the main tong shell, so that the oil pipe can be conveniently and smoothly moved out of the tong mouth and the smooth operation of next shackle operation is ensured.
And in the process of notching, the notch position of the main clamp clamping mechanism is detected in real time. If the position of the shell notch is not aligned with the position of the shell notch, an alarm indication or the operation of the middle power pliers is sent out by the controller; and if the positions of the gaps are determined to be aligned with each other, controlling the workover rig elevator to lift the oil pipe, so as to finish the pipe lifting operation.
Advantageous advantages of the power tong control system and method of operation thereof according to the present invention include:
in pipe lowering and pipe lifting operations, the power tongs driven by the hydraulic motor and the hydraulic oil cylinder are adopted to replace the traditional manual shifting fork mechanism, so that the labor force participating in high-load workover operations is greatly reduced;
the feedback mechanism of the running state of the power tongs is provided, the rotating torque and the number of rotating turns of the power tongs can be effectively ensured, and the control precision is high;
the progress of the workover treatment can be adjusted in real time according to the current running state of the power tongs, for example, the operations such as gear shifting and reversing of the power tongs can be executed based on the rotating torque and the number of rotating circles of the main tongs, and the control effectiveness is high; and
the hydraulic clamp has good man-machine interaction function, the operation state of the equipment can be displayed to an operator in real time, and the operator can set relevant parameters of the hydraulic clamp by means of the operation panel.
Although the present invention has been described with reference to the preferred embodiments, it is not to be limited thereto. Various changes and modifications can be made without departing from the spirit and scope of the invention, and the scope of the invention should be determined by the appended claims.
Claims (14)
1. A power tong control system for a workover rig, the power tong comprising a main tong configured to rotate a first part of an item to be operated via a main tong drive mechanism under drive of a main tong motor, and a back-up tong configured to grip a second part of the item to be operated by work from a back-up tong cylinder so that the main tong cooperates with the back-up tong to perform make-up or break-out operations, wherein the power tong control system comprises a hydraulic pump for supplying power oil, a controller, a hydraulic proportional valve, a shift valve, and a main tong parameter sensor,
the hydraulic proportional valve is configured to distribute power oil provided by the hydraulic pump to the main tong motor and the back-up tong oil cylinder according to a preset flow rate and a preset flow direction under the control of the controller;
the gear shifting valve is configured to change the transmission mode of the main clamp transmission mechanism under the control of the controller so as to adjust the rotary gear of the main clamp;
the main tong parameter sensor is configured to detect an operating parameter of the main tong; and
the controller is configured to control the hydraulic proportional valve and the shift valve in real time based on the main tong operation parameters detected by the main tong parameter sensor to adjust the operation state of the main tong and/or the back-up tong.
2. A power tong control system according to claim 1, wherein the main tong parameter sensor comprises a main tong turn number sensor for detecting the number of turns of the main tong, and/or a torque sensor for detecting the rotational torque of the main tong.
3. A power tong control system according to claim 1 or 2, wherein the operating conditions of the main tong include the rotational gear, rotational direction and rotational torque of the main tong, and the operating conditions of the back-up tong include the clamping force and direction of movement of the back-up tong.
4. A power tong control system according to claim 1 or 2, further comprising a proportional valve amplifier connected between the hydraulic proportional valve and the controller.
5. A power tong control system according to claim 1 or 2, further comprising human interaction means for displaying to a user the operating status of the power tong control system and/or for receiving user input.
6. A power tong control system according to claim 1 or 2, wherein the items to be operated comprise tubing and a sucker rod.
7. An oil workover rig comprising the power tong control system of any one of claims 1 to 6.
8. A method of operating a power tong control system according to any one of claims 1 to 6, wherein the method of operation includes the steps of:
distributing power oil with preset flow and flow direction to a main tong motor and a back-up tong oil cylinder to simultaneously start the main tong and the back-up tong;
detecting the operation parameters of the main tong in real time; and
adjusting the operating state of the main tong and/or the back-up tong in real time based on the detected operating parameters of the main tong.
9. The method of operation of claim 8, wherein the main tong defaults to rotating in high gear when activated during make-up operations, the method of operation further comprising:
and detecting the number of rotation turns of the main tong in real time, further detecting the rotation torque of the main tong when the number of rotation turns reaches a first preset number of turns, and switching the rotation gear of the main tong to a low gear if the rotation torque of the main tong is in a first preset torque range.
10. The method of operation of claim 9, wherein the method of operation further comprises, in a make-up operation:
the main tong is switched to a low gear, the main tong's turning torque is detected in real time, and when the main tong's turning torque is higher than a make-up torque limit, the main tong and the back-up tong are released.
11. The method of operation of claim 10, wherein the method of operation further comprises, in a make-up operation:
after the main pliers and the back pliers are loosened, notch operation and main pliers switching to a high-speed gear are sequentially performed on the main pliers, so that the operation piece to be operated can be conveniently moved out of the jaws of the main pliers and the next screwing operation can be conveniently performed.
12. The method of operation of claim 8, wherein the main tong when activated defaults to rotation in a low gear during break out operations, the method of operation further comprising:
and detecting the number of rotation turns of the main tong in real time, further detecting the rotation torque of the main tong when the number of rotation turns reaches a second preset number of turns, and switching the rotation gear of the main tong to a high gear if the rotation torque of the main tong is in a second preset torque range.
13. The method of operation of claim 12, wherein the method of operation further comprises, in a break out operation:
under the condition that the main tong is switched to a high-speed gear, the number of rotation turns of the main tong is detected in real time, when the number of rotation turns of the main tong reaches a third preset number of turns, the main tong and the back-up tong are loosened, and the main tong is switched to a low-speed gear.
14. The method of operation of claim 13, wherein the method of operation further comprises, in a break out operation:
after the main tong and the back-up tong are released and the main tong is switched to a low gear, a notching operation is performed on the main tong to facilitate the removal of the operation piece to be operated from the jaws of the main tong.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812729.4A CN112031682A (en) | 2020-08-13 | 2020-08-13 | Power tong control system, operation method thereof and workover rig comprising power tong control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010812729.4A CN112031682A (en) | 2020-08-13 | 2020-08-13 | Power tong control system, operation method thereof and workover rig comprising power tong control system |
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| CN112031682A true CN112031682A (en) | 2020-12-04 |
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| CN202010812729.4A Pending CN112031682A (en) | 2020-08-13 | 2020-08-13 | Power tong control system, operation method thereof and workover rig comprising power tong control system |
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|---|---|
| CN (1) | CN112031682A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685380A (en) * | 2021-08-24 | 2021-11-23 | 黄山华能石化机械有限公司 | Control system and control method of hydraulic tongs |
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| CN2356336Y (en) * | 1998-10-30 | 1999-12-29 | 仇宏展 | Automatic control torque instrument for hydraulic power oil pipe clamp |
| CN201236647Y (en) * | 2008-08-08 | 2009-05-13 | 辽河石油勘探局 | Hydraulic pliers |
| CN205743775U (en) * | 2016-07-08 | 2016-11-30 | 东营市天亿石油工具制造有限公司 | Fully automatic hydraulic Power Tong |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2356336Y (en) * | 1998-10-30 | 1999-12-29 | 仇宏展 | Automatic control torque instrument for hydraulic power oil pipe clamp |
| CN201236647Y (en) * | 2008-08-08 | 2009-05-13 | 辽河石油勘探局 | Hydraulic pliers |
| CN205743775U (en) * | 2016-07-08 | 2016-11-30 | 东营市天亿石油工具制造有限公司 | Fully automatic hydraulic Power Tong |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685380A (en) * | 2021-08-24 | 2021-11-23 | 黄山华能石化机械有限公司 | Control system and control method of hydraulic tongs |
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Application publication date: 20201204 |