Under-pressure operation automatic oil pipe online measuring and cleaning device and method

Abstract

The invention belongs to the technical field of petroleum automatic under-pressure well repair oil pipe lifting and lowering devices, and discloses an under-pressure operation automatic on-line oil pipe measuring and cleaning device and method.The device comprises a chassis, an amplitude-variable arm, a rear check block, an oil pipe measuring and cleaning mechanism and a control system, and the chassis is a bearing component of the amplitude-variable arm, the rear check block and the oil pipe measuring and cleaning mechanism; the variable-amplitude arm is installed on the chassis, the front end of the variable-amplitude arm is hinged to the chassis, the rear check block is adjustably installed at the tail of the variable-amplitude arm, and the oil pipe measuring and cleaning mechanism is installed at the front end of the chassis and comprises an installation frame, a length measuring oil cylinder, a limiting baffle and a cleaning base. According to the method, signals transmitted by the sensor can be received through the control system, measurement, recording and uploading of the oil pipe are achieved, opening and closing of an inlet and an outlet of the cleaning seat are controlled, and automatic cleaning of the oil pipe is achieved. And the operation mode is changed from traditional manual operation to mechanical automatic operation, so that the operation safety is improved, the labor intensity of workers is reduced, and the operation conditions of the workers are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield automation tubing running and pulling under pressure, and is an on-line measurement and cleaning device and method for tubing under pressure operation automation. Background Art

[0002] At present, in the oil well workover industry in China, the main way to clean the tubing is to manually insert the high-pressure steam cleaning pipe into the tubing coupling position for degreasing and paraffin removal, and then insert the compressed air pipe into the tubing coupling position for blowing and cleaning. Since the high-pressure steam cleaning pipe and the compressed air pipe are heavy and have great danger, it requires 3 people to work together each time the tubing is cleaned. The operation efficiency is low, the labor intensity is high, and there are great potential safety hazards. Summary of the Invention

[0003] To solve the above problems, the present invention provides an on-line measurement and cleaning method for tubing under pressure operation automation, which realizes the automation operation of tubing on-line measurement and cleaning for the first time in the industry. The use of this method changes the operation mode from traditional manual operation to mechanized automatic operation. The whole process does not require direct participation of workers, reduces the labor intensity of workers, improves the working conditions of workers, and improves the safety of operation.

[0004] In the current automation field, this technical method is a pioneer. Compared with the traditional tubing measurement and cleaning technical methods, this method changes from traditional manual operation to mechanized operation, from traditional manual measurement and cleaning to full-automatic measurement and cleaning, and can monitor the operation status in real time, greatly improving the working environment of workers, reducing the labor intensity, improving the safety and efficiency of operation, and solving practical problems for the oil industry.

[0005] The above object of the present invention is achieved by the following technical solutions:

[0006] An on-line measurement and cleaning method for tubing under pressure operation automation, which is applied to the tubing measurement and cleaning operation in the automation tubing running and pulling operation, and is based on the automation under pressure operation device.

[0007] This method is applied to the automation under pressure tubing running and pulling operation. The PLC program judges whether the tubing measurement and cleaning mechanism has completed the measurement and records it by receiving the pressure signal transmitted by the sensor, and at the same time controls the opening and closing of the ball valve and the switching of the reversing valve to realize the measurement and cleaning of the tubing.

[0008] The on-line measurement and cleaning device for tubing under pressure operation automation includes a chassis, a luffing arm, a rear stop block, a tubing measurement and cleaning mechanism, a control system, etc.

[0009] The chassis is a load-bearing component for mechanisms such as the luffing arm and the tubing measurement mechanism, and is mainly used for installing the above mechanisms.

[0010] The luffing arm is installed on the chassis, and its front end is hinged to the chassis. It can rotate around the hinge point under the drive of the drive source, and is mainly used for the transfer of oil pipes, auxiliary measurement and cleaning.

[0011] The rear stop block is installed at the tail of the luffing arm, and the installation method is an adjustable structure, which is convenient for cooperating with the oil pipe measuring mechanism and the cleaning mechanism, and is mainly used for the positioning, auxiliary measurement and cleaning of the oil pipe.

[0012] The oil pipe measuring and cleaning mechanism is installed at the front end of the chassis, and includes a mounting frame, a length measuring oil cylinder, a limit baffle and a cleaning seat. According to the functional requirements, a length measuring sensor is arranged inside the length measuring oil cylinder to measure the length of the oil pipe and transmit the measurement data to the control system; a pressure sensor is also arranged at the position of the operation valve group of the length measuring oil cylinder to control the opening and closing of the inlet and outlet of the cleaning seat.

[0013] The mounting frame is the base of the length measuring oil cylinder, the limit baffle and the cleaning seat.

[0014] The limit baffle is located at the front end of the length measuring oil cylinder, and can cooperate with the rear stop block to clamp the oil pipe under the drive of the length measuring oil cylinder to realize the measurement of the oil pipe.

[0015] The cleaning seat is installed above the limit baffle, and has one outlet and two inlets, and the three ports communicate with each other. The outlet is located at the front end of the limit baffle and is used to insert into the position of the oil pipe coupling under the drive of the length measuring oil cylinder. The two outlets are located at the upper end of the limit baffle, one is connected to the external high-temperature steam for degreasing and wax removal, and the other is connected to the external compressed air for blowing and cleaning.

[0016] The control system is used on the one hand to receive the length measuring signal of the sensor inside the length measuring oil cylinder, record it and upload it to the display screen; on the other hand, it receives the signal of the pressure sensor and controls the opening and closing of the inlet and outlet of the cleaning seat to realize the automatic cleaning of the oil pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] This method can receive the signals transmitted by the sensors through the control system, realize the measurement, recording, uploading of the oil pipe and control the opening and closing of the inlet and outlet of the cleaning seat, so as to realize the automatic cleaning of the oil pipe. The operation mode is changed from the traditional manual operation to the mechanized automatic operation, which improves the operation safety, reduces the labor intensity of the workers and improves the working conditions of the workers. Description of the Drawings

[0019] The above is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly, the following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0020] Appendix Figure 1It is the overall schematic diagram of an on-line measurement and cleaning method for tubing under pressure operation in the present invention;

[0021] Appendix Figure 2 It is the structural schematic diagram of the tubing measurement and cleaning mechanism in the present invention;

[0022] Appendix Figure 3 It is the structural schematic diagram of the cleaning seat in the present invention.

[0023] In the figure: 1 - chassis, 2 - luffing arm, 3 - rear stop block, 4 - tubing measurement and cleaning mechanism, 5 - control system, 401 - mounting frame, 402 - length measuring oil cylinder, 403 - limit baffle, 404 - cleaning seat. Specific implementation mode

[0024] Referring to the attached drawings, the present invention provides an on-line measurement and cleaning method for tubing under pressure operation, which is based on the automated tubing running and pulling operation. The on-line measurement and cleaning device for tubing under pressure operation includes a chassis 1, a luffing arm 2, a rear stop block 3, a tubing measurement and cleaning mechanism 4, and a control system 5. The tubing measurement and cleaning mechanism includes a mounting frame 401, a length measuring oil cylinder 402, a limit baffle 403, and a cleaning seat 404.

[0025] This method is applied to the automated tubing running and pulling operation under pressure. The PLC program judges whether the tubing measurement and cleaning mechanism 4 has completed the measurement and records it by receiving the pressure signal transmitted by the sensor, and at the same time controls the opening and closing of the ball valve and the switching of the directional control valve to realize the measurement and cleaning of the tubing.

[0026] Its main feature is that the on-line measurement and cleaning device for tubing under pressure operation is composed of a chassis 1, a luffing arm 2, a rear stop block 3, a tubing measurement and cleaning mechanism 4, a control system 5, etc.

[0027] The chassis 1 is a load-bearing component for the luffing arm 2, the tubing measurement and cleaning mechanism 4, etc., and is mainly used for installing the above-mentioned mechanisms.

[0028] The luffing arm 2 is installed on the chassis 1, and the front end is hinged to the chassis 1 and can rotate around the hinge point under the drive of the drive source, and is mainly used for the transfer, auxiliary measurement and cleaning of the tubing.

[0029] The rear stop block 3 is installed at the tail of the luffing arm 2, and the installation method is an adjustable structure, which is convenient to cooperate with the tubing measurement and cleaning mechanism 4, and is mainly used for the positioning, auxiliary measurement and cleaning of the tubing.

[0030] The oil pipe measuring and cleaning mechanism 4 is installed at the front end of the chassis 1, and includes a mounting frame 401, a length measuring oil cylinder 402, a limit baffle 403 and a cleaning seat 404. According to the functional requirements, a length measuring sensor is arranged inside the length measuring oil cylinder 402 to measure the length of the oil pipe and transmit the measurement data to the control system; a pressure sensor is also arranged at the position of the operating valve group of the length measuring oil cylinder 402 to control the opening and closing of the inlet and outlet of the cleaning seat 404.

[0031] The mounting frame 401 is the base of the length measuring oil cylinder 402, the limit baffle 403 and the cleaning seat 404.

[0032] The limit baffle 403 is located at the front end of the length measuring oil cylinder 402, and can cooperate with the rear stop 3 under the drive of the length measuring oil cylinder 402 to clamp the oil pipe, so as to realize the measurement of the oil pipe.

[0033] The cleaning seat 404 is installed above the limit baffle 403, and has one outlet and two inlets, and the three ports communicate with each other. The outlet is located at the front end of the limit baffle, and is used to insert into the position of the oil pipe coupling under the drive of the length measuring oil cylinder 402. The two outlets are located at the upper end of the limit baffle 403, one is connected to the external high-temperature steam for degreasing and wax removal, and the other is connected to the external compressed air for blowing and cleaning.

[0034] The control system 5 is used on the one hand to receive the length measuring signal of the sensor inside the length measuring oil cylinder 402, record it and upload it to the display screen; on the other hand, it receives the signal of the pressure sensor and controls the opening and closing of the inlet and outlet of the cleaning seat to realize the automatic cleaning of the oil pipe.

[0035] The specific method is as follows: After the luffing arm 2 places the oil pipe in a horizontal state, the length measuring oil cylinder 402 drives the limit baffle 403 to cooperate with the rear stop 3 to start clamping the oil pipe. When the pressure sensor set at the position of the operating valve group of the length measuring oil cylinder 402 detects that the pressure reaches the preset value, the clamping operation stops. Subsequently, the length measuring sensor arranged inside the length measuring oil cylinder 402 measures the length of the oil pipe and transmits the measurement data to the control system 5. The control system 5 receives the measurement data, summarizes and stores it, and displays the measurement data on the display screen for the convenience of the workers to view, and the oil pipe measurement operation is completed. While the length measuring oil cylinder 402 drives the limit baffle 403 to cooperate with the rear stop 3 to clamp the oil pipe, the outlet of the cleaning seat 404 is inserted into the position of the oil pipe coupling. When the pressure sensor set at the position of the operating valve group of the length measuring oil cylinder 402 detects that the pressure reaches the preset value, the control system 5 controls the two outlets of the cleaning seat to open and close in sequence to complete the oil pipe cleaning operation.

[0036] The above two operation processes are automatically carried out simultaneously under the control of the control system 5, which improves the operation efficiency and reduces the labor intensity of the workers.

[0037] As described above, it is only the preferred embodiment of the present invention, and there is no restriction on the present invention in any form. Any simple modification, equivalent change or modification made by those skilled in the art using the above-disclosed technical content shall fall within the protection scope of the present invention.

Claims

1. An on-line measuring and cleaning device for pressurized operation automatic tubing, characterized in that, it includes a chassis (1), a luffing arm (2), a rear stop (3), a tubing measuring and cleaning mechanism (4), and a control system (5). The chassis (1) is a load-bearing component for the luffing arm (2), the rear stop (3), and the tubing measuring and cleaning mechanism (4). The luffing arm (2) is installed on the chassis (1), and its front end is hinged to the chassis (1). The rear stop (3) is adjustably installed at the tail of the luffing arm (2). The tubing measuring and cleaning mechanism (4) is installed at the front end of the chassis (1) and includes a mounting frame (401), a length measuring cylinder (402), a limit baffle (403), and a cleaning seat (404).

2. The on-line measuring and cleaning device for pressurized operation automatic tubing according to claim 1, characterized in that, the luffing arm (2) rotates around the hinge point under the drive of a drive source.

3. The on-line measuring and cleaning device for pressurized operation automatic tubing according to claim 1, characterized in that, the mounting frame (401) is the base of the length measuring cylinder (402), the limit baffle (403), and the cleaning seat (404). The limit baffle (403) is located at the front end of the length measuring cylinder (402) and can cooperate with the rear stop (3) to clamp the tubing under the drive of the length measuring cylinder (402). The cleaning seat (404) is installed above the limit baffle (403).

4. The on-line measuring and cleaning device for pressurized operation automatic tubing according to claim 1, characterized in that, the cleaning seat (404) has one outlet and two inlets, and the three ports communicate with each other. The outlet is located at the front end of the limit baffle and is used to insert into the tubing coupling position under the drive of the length measuring cylinder (402). The two inlets are located at the upper end of the limit baffle (403). One is connected to external high-temperature steam for oil and wax removal, and the other is connected to external compressed air for spray cleaning.

5. The on-line measuring and cleaning device for pressurized operation automatic tubing according to claim 1, characterized in that, a length measuring sensor is arranged inside the length measuring cylinder (402).

6. The on-line measuring and cleaning device for pressurized operation automatic tubing according to claim 1, characterized in that, a pressure sensor is arranged at the position of the operating valve group of the length measuring cylinder (402).

7. The on-line measuring and cleaning device for pressurized operation automatic tubing according to claim 5, characterized in that, the control system (5) receives the length measuring signal from the sensor inside the length measuring cylinder (402), records it, and uploads it to the display screen.

8. The on-line measuring and cleaning device for pressurized operation automatic tubing according to claim 6, characterized in that, the control system (5) receives the signal from the pressure sensor and controls the opening and closing of the inlets and outlets of the cleaning seat (404) to realize automatic cleaning of the tubing.

9. An on-line measuring and cleaning method for pressurized operation automatic tubing, characterized in that, After the luffing arm (2) places the oil pipe in a horizontal state, the length measuring oil cylinder (402) drives the limit baffle (403) to cooperate with the rear stop block (3) to start clamping the oil pipe. When the pressure sensor set at the position of the operation valve group of the length measuring oil cylinder (402) detects that the pressure reaches the preset value, the clamping operation stops. Subsequently, the length measuring sensor set inside the length measuring oil cylinder (402) measures the length of the oil pipe and transmits the measurement data to the control system (5). The control system (5) receives the measurement data, summarizes and stores it, and displays the measurement data on the display screen. The oil pipe measurement operation is completed. While the length measuring oil cylinder (402) drives the limit baffle (403) to cooperate with the rear stop block (3) to clamp the oil pipe, the outlet of the cleaning seat (404) is inserted into the position of the oil pipe coupling. When the pressure sensor set at the position of the operation valve group of the length measuring oil cylinder (402) detects that the pressure reaches the preset value, the control system (5) controls the two outlets of the cleaning seat to open and close in sequence to complete the oil pipe cleaning operation.

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