A method for using a rotary slip torque testing device

Abstract

The present invention provides a rotating slip torque testing device and method, including a base, support frames fixedly provided on both sides of the base, a hinged loading cylinder provided on the top of the support frame, a rotating slip bottom fixedly provided in the middle of the base, a core shaft fixedly provided inside the rotating slip, a torque connecting plate fixedly provided on the core shaft, and both ends of the torque connecting plate hinged to the piston rod end of the loading cylinder; a hydraulic control system is also provided, and the hydraulic control system is used to provide the required hydraulic pressure for the loading cylinder and the rotating slip cylinder. The size of the load provided by the rotating slip cylinder is controlled by adjusting the pressure of the proportional relief valve; the test finds out the relationship between the rotating slip pressure and the torque it bears, and adjusts the appropriate pressure of the rotating slip cylinder according to the torque required for the operation to achieve a better clamping state, which effectively improves the operating efficiency of the equipment, eliminates safety hazards, and also increases the service life of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of petrochemical equipment, and in particular to a method for using a rotating slip torque testing device. Background Art

[0002] With the deepening of unconventional energy development, in order to ensure the high and stable production of oil and gas in various oil fields, special well repair operations are increasing, and the requirements for equipment and operation processes are becoming higher and higher. Therefore, the non-suppressing well operation equipment is a new type of well repair equipment. It operates on oil and gas wells without suppressing the well. It is a stable production, energy-saving, environmentally friendly and wide-coverage equipment. With the maturity of domestic pressure operation technology, the scope of pressure operation is expanding from simple lifting and lowering of completion pipes to drilling, plugging and milling overhaul. Whether the torque bearing performance of the rotary slip can be used for effective drilling and milling is the key to the success of the operation. Therefore, the torque bearing performance of the rotary slip must be tested before leaving the factory to provide a reliable basis and guarantee for the industrial use of the rotary slip. Therefore, it is particularly important to measure its torque bearing performance.

[0003] Since there is no device on the market for measuring the torque bearing performance of the rotary slip, the torque bearing performance of the rotary slip cannot be detected, which restricts the expansion, use and development of the operating range of the pressure working equipment. Summary of the invention

[0004] The main purpose of the present invention is to provide a method for using a rotating slip torque testing device to solve the problem of rotating slip torque performance testing.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: comprising a base, support frames are fixedly arranged on both sides of the base, a hinged loading cylinder is arranged on the top of the support frame, the bottom of the rotating slip is fixedly arranged in the middle of the base, a core shaft is fixedly arranged in the rotating slip, a torque connecting plate is fixedly arranged on the core shaft, and both ends of the torque connecting plate are hinged to the piston rod end of the loading cylinder;

[0006] A hydraulic control system is also provided, which is used to provide the required hydraulic pressure for the loading cylinder and the rotating slip cylinder.

[0007] In the preferred embodiment, a fixing seat is fixedly provided at the end of the support frame, the cylinder end of the loading cylinder is hinged on the fixing seat through a pin, and the piston rod end of the loading cylinder is hinged on the torque connecting plate through a pin.

[0008] In the preferred embodiment, the bottom of the rotary slip is fixedly connected to the base through flange bolts, and the core shaft is driven by the rotary slip cylinder to be tightly clamped inside the rotary slip.

[0009] In a preferred embodiment, a flange is fixedly provided at the end of the core shaft, the middle part of the torque connecting plate is sleeved on the core shaft, and the torque connecting plate is fixedly connected to the flange on the core shaft by bolts.

[0010] In the preferred embodiment, the hydraulic control system includes a variable piston pump, a metering pump, a first reversing valve, a proportional overflow valve, an unloading valve and a second reversing valve. The variable piston pump is connected to the first reversing valve and the proportional overflow valve respectively through a filter, and the metering pump is connected to the second reversing valve and the unloading valve respectively through a filter.

[0011] In the preferred embodiment, the first reversing valve is connected to the rotary slip cylinder via a hydraulic lock, a throttle valve, an accumulator and a first pressure sensor.

[0012] In a preferred embodiment, the second reversing valve is connected to the loading cylinder via a hydraulic lock, a throttle valve, a second pressure sensor and a third pressure sensor.

[0013] The method is as follows: S1, the bottom of the rotating slip is fixed to the base by bolts, a cushion block is placed on the end face of the rotating slip, a torque connecting plate is fixed to the mandrel by bolts, the end of the mandrel is placed in the rotating slip, and the torque connecting plate falls on the cushion block for support;

[0014] S2. Connect the hydraulic pipeline of the loading cylinder and the rotary slip cylinder, load the loading cylinder to extend the piston rod, hinge the end of the cylinder barrel of the loading cylinder to the fixed seat through the pin, and hinge the end of the piston rod of the loading cylinder to the torque connecting plate through the pin;

[0015] S3, connect the hydraulic pipelines in the hydraulic control system, adjust the pressure of the variable piston pump and the proportional relief valve, and adjust the pressure of the quantitative pump and the unloading valve;

[0016] S4, start the motor to drive the variable plunger pump and the quantitative pump to rotate, operate the first reversing valve, and the hydraulic oil passes through the filter to pressurize the rotary slip cylinder, so that the rotary slip holds the clamping mandrel tightly. The clamping pressure is adjusted by the proportional relief valve. After reaching the required pressure, the first reversing valve is moved to the middle position, the hydraulic lock locks the pressure in the rotary slip cylinder, and the accumulator maintains the pressure;

[0017] S5. Operate the second reversing valve. The hydraulic oil passes through the filter to pressurize the loading cylinder, so that the loading cylinder pushes the torque connecting plate, causing the torque connecting plate to rotate, thereby transmitting the torque to the rotating slip. The load size is controlled by the proportional relief valve, so as to measure the torque bearing performance of the rotating slip.

[0018] The present invention provides a method for using a rotary slip torque testing device, which has the following advantages:

[0019] 1. This method uses a rotary slip torque test device to detect the forward and reverse torque bearing performance of the rotary slip; the load provided by the rotary slip cylinder is controlled by adjusting the pressure of the proportional relief valve; the test finds out the relationship between the rotary slip pressure and the torque it bears, and adjusts the appropriate pressure of the rotary slip cylinder according to the torque required for the operation to achieve a better clamping state, which effectively improves the operating efficiency of the equipment, eliminates safety hazards, and also increases the service life of the equipment;

[0020] 2. After the above positive and reverse loading tests, the quality and reliability of the equipment have been improved, the service life of the equipment has been extended, the trust of users has been won, and the monopoly of foreign pressure operation technology has been broken. The equipment has achieved a historic breakthrough from relying on imports to exporting in batches to foreign countries, and the localization of pressure operation equipment has been realized, creating better economic benefits;

[0021] 3. The testing device has a simple structure and is safe and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 It is an axial side view of the overall structure of the present invention;

[0024] Figure 2 It is an exploded view of the overall structure of the present invention;

[0025] Figure 3 It is a top view of the overall structure of the present invention;

[0026] Figure 4 is a flow chart of the hydraulic control system of the present invention;

[0027] In the figure: base 1; support frame 2; fixing seat 3; loading cylinder 4; torque connecting plate 5; core shaft 6; rotary slip 7; variable piston pump 8; metering pump 9; filter 10; first reversing valve 11; second reversing valve 12; hydraulic lock 13; throttle valve 14; accumulator 15; first pressure sensor 16; second pressure sensor 17; third pressure sensor 18; rotary slip cylinder 19; unloading valve 20; radiator 21; proportional relief valve 22; pad 23. DETAILED DESCRIPTION

[0028] Example 1

[0029] like Figures 1 to 4As shown, a method for using a rotating slip torque test device comprises a base 1, support frames 2 are fixedly arranged on both sides of the base 1, a hinged loading cylinder 4 is arranged on the top of the support frame 2, a rotating slip 7 is fixedly arranged at the bottom in the middle of the base 1, a core shaft 6 is fixedly arranged in the rotating slip 7, a torque connecting plate 5 is fixedly arranged on the core shaft 6, and both ends of the torque connecting plate 5 are hinged to the piston rod ends of the loading cylinder 4;

[0030] A hydraulic control system is also provided, which is used to provide the required hydraulic pressure for the loading cylinder 4 and the rotating slip cylinder 19. With this structure, the bottom of the rotating slip 7 is fixed on the base 1, the mandrel 6 is clamped by the rotating slip cylinder 19, and the loading cylinders 4 on both sides drive the torque connecting plate 5 on the mandrel 6 to generate a rotation trend, so that the torque bearing performance of the rotating slip 7 is measured according to the hydraulic control system.

[0031] In the preferred embodiment, a fixing seat 3 is fixedly provided at the end of the support frame 2, the cylinder end of the loading cylinder 4 is hinged on the fixing seat 3 through a pin, and the piston rod end of the loading cylinder 4 is hinged on the torque connecting plate 5 through a pin. With this structure, both ends of the loading cylinder 4 are hinged to the fixing seat 3 and the torque connecting plate 5 through the pin, so that the torque connecting plate 5 can be driven by the loading cylinder 4 to generate a rotation tendency.

[0032] In the preferred embodiment, the bottom of the rotating slip 7 is fixedly connected to the base 1 by flange bolts, and the mandrel 6 is driven by the rotating slip cylinder 19 to clamp inside the rotating slip 7. With this structure, the rotating slip cylinder 19 drives the slip teeth to move toward the center, thereby clamping and clamping the mandrel 6.

[0033] In the preferred embodiment, a flange is fixedly provided at the end of the mandrel 6, the middle part of the torque connecting plate 5 is sleeved on the mandrel 6, and the torque connecting plate 5 is fixedly connected to the flange on the mandrel 6 by bolts. With this structure, the installation and removal of the torque connecting plate 5 and the mandrel 6 are simple, convenient and reliable.

[0034] In the preferred embodiment, the hydraulic control system includes a variable piston pump 8, a metering pump 9, a first reversing valve 11, a proportional relief valve 22, an unloading valve 20 and a second reversing valve 12. The variable piston pump 8 is connected to the first reversing valve 11 and the proportional relief valve 22 through a filter 10, and the metering pump 9 is connected to the second reversing valve 12 and the unloading valve 20 through a filter 10. With this structure, the proportional relief valve 22 can adjust the pipeline pressure of the rotary slip cylinder 19 and the loading cylinder 4, and adjusting the pressure of the unloading valve 20 can unload the metering pump 9 at this pressure.

[0035] In the preferred embodiment, the first reversing valve 11 is connected to the rotary slip cylinder 19 via a hydraulic lock 13 , a throttle valve 14 , an accumulator 15 and a first pressure sensor 16 .

[0036] In a preferred embodiment, the second reversing valve 12 is connected to the loading cylinder 4 via a hydraulic lock 13 , a throttle valve 14 , a second pressure sensor 17 and a third pressure sensor 18 .

[0037] Example 2

[0038] In combination with Example 1, Figures 1 to 4 As shown, the bottom of the rotating cava 7 is fixed to the base 1 by bolts, a cushion block 23 is placed on the end face of the rotating cava 7, the torque connecting plate 5 is fixed to the core shaft 6 by bolts, the end of the core shaft 6 is placed in the rotating cava 7, and the torque connecting plate 5 falls on the cushion block 23 for support; the hydraulic pipelines of the loading cylinder 4 and the rotating cava cylinder 19 are connected, the loading cylinder 4 is loaded to extend the piston rod stroke, the cylinder end of the loading cylinder 4 is hinged to the fixed seat 3 through a pin shaft, and the piston rod end of the loading cylinder 4 is hinged to the torque connecting plate 5 through a pin shaft; the hydraulic pipelines in the hydraulic control system are connected, the pressure of the variable piston pump 8 and the proportional relief valve 22 is adjusted, and the pressure of the metering pump 9 and the unloading valve 20 is adjusted; the motor is started to drive the variable piston pump 8 and the metering pump 9 rotate to operate the first reversing valve 11, and the hydraulic oil passes through the filter 10 to pressurize the rotary cava cylinder 19, so that the rotary cava 7 holds the clamping core shaft 6, and the clamping pressure is adjusted by the proportional relief valve 22. After reaching the required pressure, the first reversing valve 11 is moved to the middle position, the hydraulic lock 13 locks the pressure in the rotary cava cylinder 19, and the accumulator 15 maintains the pressure; the second reversing valve 12 is operated, and the hydraulic oil passes through the filter 10 to pressurize the loading cylinder 4, so that the loading cylinder 4 pushes the torque connecting plate 5, so that the torque connecting plate 5 has a rotation tendency, thereby transmitting the torque to the rotary cava 7, and the load size is controlled by the proportional relief valve 22, so as to measure the torque bearing performance of the rotary cava 7.

[0039] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A method for using a rotating slip torque test device, characterized by: The base (1) comprises a support frame (2) fixedly provided on both sides of the base (1), a hinged loading cylinder (4) being provided on the top of the support frame (2), a rotating cava (7) being fixedly provided at the bottom in the middle of the base (1), a core shaft (6) being fixedly provided in the rotating cava (7), a torque connecting plate (5) being fixedly provided on the core shaft (6), and two ends of the torque connecting plate (5) being hingedly connected to the piston rod end of the loading cylinder (4); A hydraulic control system is also provided, and the hydraulic control system is used to provide the required hydraulic pressure for the loading cylinder (4) and the rotating slip cylinder (19); A fixed seat (3) is fixedly provided at the end of the support frame (2); the end of the cylinder barrel of the loading cylinder (4) is hinged on the fixed seat (3) via a pin shaft; and the end of the piston rod of the loading cylinder (4) is hinged on the torque connecting plate (5) via a pin shaft; The hydraulic control system comprises a variable piston pump (8), a fixed displacement pump (9), a first reversing valve (11), a proportional relief valve (22), an unloading valve (20), and a second reversing valve (12); the variable piston pump (8) is connected to the first reversing valve (11) and the proportional relief valve (22) respectively through a filter (10); the fixed displacement pump (9) is connected to the second reversing valve (12) and the unloading valve (20) respectively through a filter (10); The first reversing valve (11) is connected to the rotary slip cylinder (19) via a hydraulic lock (13), a throttle valve (14), an accumulator (15) and a first pressure sensor (16); The second reversing valve (12) is connected to the loading cylinder (4) via a hydraulic lock (13), a throttle valve (14), a second pressure sensor (17) and a third pressure sensor (18); The method for using the rotating slip torque test device comprises the following steps: S1, the bottom of the rotating cava (7) is fixed to the base (1) by bolts, a cushion block (23) is placed on the end face of the rotating cava (7), the torque connecting plate (5) is fixed to the mandrel (6) by bolts, the end of the mandrel (6) is placed in the rotating cava (7), and the torque connecting plate (5) falls on the cushion block (23) for support; S2, connecting the hydraulic pipeline of the loading cylinder (4) and the rotary slip cylinder (19), loading the loading cylinder (4) to extend the piston rod, hinge the cylinder end of the loading cylinder (4) on the fixed seat (3) through the pin, and hinge the piston rod end of the loading cylinder (4) on the torque connecting plate (5) through the pin; S3, connecting the hydraulic pipelines in the hydraulic control system, adjusting the pressure of the variable piston pump (8) and the proportional relief valve (22), and adjusting the pressure of the fixed displacement pump (9) and the unloading valve (20); S4, the start motor drives the variable plunger pump (8) and the fixed displacement pump (9) to rotate, operates the first reversing valve (11), and the hydraulic oil passes through the filter (10) to pressurize the rotary slip cylinder (19), so that the rotary slip (7) holds the clamping core shaft (6), and the clamping pressure is adjusted by the proportional relief valve (22). When the required pressure is reached, the first reversing valve (11) is moved to the middle position, the hydraulic lock (13) locks the pressure in the rotary slip cylinder (19), and the accumulator (15) maintains the pressure; S5. Operate the second reversing valve (12), and the hydraulic oil passes through the filter (10) to pressurize the loading cylinder (4), so that the loading cylinder (4) pushes the torque connecting plate (5), causing the torque connecting plate (5) to have a rotation tendency, thereby transmitting the torque to the rotating cava (7). The load size is controlled by the proportional relief valve (22), so as to measure the torque bearing performance of the rotating cava (7).

2. The method for using the rotary slip torque test device according to claim 1, characterized in that: The bottom of the rotating slip (7) is fixedly connected to the base (1) via flange bolts, and the core shaft (6) is driven by the rotating slip cylinder (19) to be tightly clamped inside the rotating slip (7).

3. The method for using the rotary slip torque testing device according to claim 1, characterized in that: A flange is fixedly provided at the end of the core shaft (6), the middle part of the torque connecting plate (5) is sleeved on the core shaft (6), and the torque connecting plate (5) is fixedly connected to the flange on the core shaft (6) by bolts.

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