Hydraulic transmission system and hydraulic transmission method for well logging power capstan

Abstract

The invention discloses a hydraulic transmission system for a logging power capstan, which comprises a cable parameter detection device, the cable parameter detection device is connected with an electric control system controller through a wire, the electric control system controller is connected with a hydraulic supply device through a wire, and the hydraulic supply device is connected with a hydraulic control valve block through a wire. The hydraulic control valve block is connected with a hydraulic control variable displacement motor through a wire, the hydraulic control variable displacement motor is connected with a power winch through a wire, and the hydraulic control valve block is further connected with a cooler through a wire. The invention further discloses a hydraulic transmission method. According to the hydraulic transmission system and the hydraulic transmission method for the well logging power capstan, full coverage of high-speed and ultra-low-speed ranges of well logging of a deep well exceeding ten thousand meters can be achieved, and stable and reliable ultra-low-speed performance is provided. The problems that the load of a logging winch is increased and an inner-layer cable of a winch drum is extruded and damaged during logging operation of a deep well of more than ten thousand meters can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of oilfield logging power drive equipment, and in particular relates to a hydraulic transmission system for a logging power winch. The invention also relates to a hydraulic transmission method. Background Art

[0002] Ultra-deep oil well logging has always been a difficult problem in oil field production, especially now that there are more and more ultra-deep wells in oil fields. The logging cable for ultra-deep well operations is too long, which increases the load on the logging winch and the cable tension; on the other hand, excessive tension can cause the inner layer of the winch drum to be squeezed and damaged, and the winch to be overloaded. In order to solve the problem of ultra-deep well logging operations, a dual-pump collaboratively driven logging power winch hydraulic transmission system was invented. When performing ultra-deep well logging operations, the power winch is driven so that the friction generated by multiple rope windings on the power winch shares the corresponding load for the logging skid and the logging winch. Summary of the invention

[0003] The purpose of the present invention is to provide a hydraulic transmission system for a logging power winch, which solves the problem of heavy logging winch load and extrusion damage of the inner cable of the logging winch drum during ultra-deep well operations in the prior art.

[0004] Another object of the present invention is to provide a hydraulic transmission method.

[0005] The technical solution adopted by the present invention is a hydraulic transmission system for a well logging power winch, including a cable parameter detection device, the cable parameter detection device is connected to an electronic control system controller through a wire, the electronic control system controller is connected to a hydraulic supply device through a wire, the hydraulic supply device is connected to a hydraulic control valve block through a wire, the hydraulic control valve block is connected to a hydraulically controlled variable motor through a wire, the hydraulically controlled variable motor is connected to a power winch through a wire, and the hydraulic control valve block is also connected to a cooler through a wire.

[0006] The present invention is also characterized in that:

[0007] The cable parameter detection device comprises a cable tension sensor and a cable linear speed sensor, and the cable tension sensor and the cable linear speed sensor are respectively connected to the electric control system controller through wires.

[0008] The hydraulic supply device includes a first electrically controlled variable pump and a second electrically controlled variable pump. The first electrically controlled variable pump is connected to the hydraulic control valve block and the electronic control system controller through wires; the second electrically controlled variable pump is connected to the hydraulic control valve block and the electronic control system controller through wires.

[0009] Another technical solution adopted by the present invention is a hydraulic transmission method, which specifically comprises the following steps:

[0010] Step 1: Use a cable parameter detection device to detect the cable line speed value and cable tension value of ultra-deep well logging operations, and transmit the cable line speed value and cable tension value to the electronic control system controller;

[0011] Step 2: The electronic control system controller makes a judgment based on the cable line speed value and the cable tension value, and starts the hydraulic supply device, which provides a hydraulic source for the hydraulic control valve block;

[0012] Step 3: The hydraulic control valve block switches the oil channel according to the size of the hydraulic source, thereby controlling the output power of the hydraulic variable motor;

[0013] Step 4: Control the speed of the power winch according to the output power of the hydraulic variable motor to share the load of the logging winch.

[0014] Another technical solution of the present invention is also characterized in that:

[0015] The specific method of using the cable parameter detection device to detect the cable line speed value and tension value of the ultra-deep well logging operation is: using a cable tension sensor to detect the cable tension value, and using a cable line speed sensor to detect the cable line speed value.

[0016] The specific method of step 2 is: the hydraulic providing device includes a first electronically controlled variable pump and a second electronically controlled variable pump, and when the cable tension is less than 40KN, the first electronically controlled variable pump or the second electronically controlled variable pump is not started; when the cable tension is not less than 40KN, when the linear speed value is less than 200m / s, the electronically controlled variable pump with smaller output power between the first electronically controlled variable pump and the second electronically controlled variable pump is started to provide a hydraulic source for the hydraulic control valve block, and when the linear speed value is not less than 200m / s, the electronically controlled variable pump with larger output power between the first electronically controlled variable pump and the second electronically controlled variable pump is started to provide a hydraulic source for the hydraulic control valve block.

[0017] The beneficial effects of the present invention are as follows: the hydraulic transmission system and hydraulic transmission method for logging power winch of the present invention can achieve full coverage of the high-speed and ultra-low-speed ranges for logging in deep wells exceeding 10,000 meters, and provide stable and reliable ultra-low-speed performance, which can solve the problems of increased load on the logging winch and extrusion damage to the inner cable of the winch drum during logging operations in deep wells exceeding 10,000 meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic structural diagram of a hydraulic transmission system for a well logging power winch.

[0019] In the figure, 1. first electronically controlled variable pump, 2. second electronically controlled variable pump, 3. hydraulic control valve block, 4. hydraulically controlled variable motor, 5. electronic control system controller, 6. cable tension sensor, 7. cable linear speed sensor, 8. cooler, 9. power winch, 10. cable parameter detection device, 11. hydraulic supply device. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0021] The hydraulic transmission system for logging power winch provided by the present invention is as follows: Figure 1 As shown, it includes a cable parameter detection device 10, which is connected to an electric control system controller 5 through a wire. The electric control system controller 5 collects the cable line speed value and cable tension value measured by the cable parameter detection device 10 for ultra-deep well logging operations, and the electric control system controller 5 is connected to a hydraulic supply device 11 through a wire. The hydraulic supply device 11 is connected to a hydraulic control valve block 3 through a wire. The electric control system controller 5 controls the hydraulic supply device 11 to rotate to provide a hydraulic source for the hydraulic control valve block 3. The hydraulic control valve block 3 is connected to a hydraulic variable motor 4 through a wire, and the hydraulic variable motor 4 is connected to a power winch 9 through a wire. The hydraulic control valve block 3 is also connected to a cooler 8 through a wire, and the hydraulic control valve block 3 switches the oil channel according to the size of the hydraulic source. The power winch 9 can provide three speed options: ultra-low speed, medium speed and high speed. The cable parameter detection device 10 includes a cable tension sensor 6 and a cable line speed sensor 7, and the cable tension sensor 6 and the cable line speed sensor 7 are respectively connected to the electric control system controller 5 through wires. The hydraulic providing device 11 includes a first electronically controlled variable pump 1 and a second electronically controlled variable pump 2. The first electronically controlled variable pump 1 is connected to the hydraulic control valve block 3 and the electronic control system controller 5 through wires; the second electronically controlled variable pump 2 is connected to the hydraulic control valve block 3 and the electronic control system controller 5 through wires.

[0022] The electric control system controller 5 collects the cable tension during logging operation measured by the cable tension sensor 6. When the cable tension is less than 40KN, the hydraulic control valve block 3 realizes the flywheel mode of the power winch 9, and the electric control system controller 5 does not start the first electric control variable pump 1 or the second electric control variable pump 2. At the same time, the hydraulic control valve block 3 switches the control oil channel to realize the follow-up rotation of the hydraulic variable motor 4. At this time, the power winch no longer provides auxiliary power for the logging winch; when the cable tension is not less than 40KN, the hydraulic control valve block 3 realizes the working mode of the power winch 9. According to the cable line speed requirement, when the line speed is less than 200m / s, the electric control system controller 5 controls the variable pump with smaller power of the first electric control variable pump 1 and the second electric control variable pump 2 to provide a hydraulic source for the system. At the same time, the hydraulic control valve block 3 switches the oil supply channel and controls the displacement of the hydraulic variable motor 4 in real time according to the speed requirement, and matches the cable line speed in real time to achieve stable logging requirements. When the line speed is not less than 200m / s, the electronic control system controller 5 controls the variable pump with larger power between the first electronically controlled variable pump 1 and the second electronically controlled variable pump 2 to provide hydraulic source for the system. At the same time, the hydraulic control valve block 3 switches the oil supply channel and controls the displacement of the hydraulically controlled variable motor 4 in real time according to the speed requirement, and matches the cable line speed in real time to ensure a wider range of logging speeds.

[0023] The hydraulic transmission method provided by the present invention uses a hydraulic transmission system for a well logging power winch, and specifically comprises the following steps:

[0024] Step 1: Use the cable parameter detection device 10 to detect the cable line speed value and the cable tension value of the ultra-deep well logging operation, and transmit the cable line speed value and the cable tension value to the electric control system controller 5;

[0025] A cable tension sensor 6 is used to detect the cable tension value, and a cable line speed sensor 7 is used to detect the cable line speed value;

[0026] Step 2, the electronic control system controller 5 makes a judgment based on the cable line speed value and the cable tension value, and starts the hydraulic pressure providing device 11, and the hydraulic pressure providing device 11 provides a hydraulic source for the hydraulic control valve block 3;

[0027] The hydraulic providing device 11 includes a first electronically controlled variable pump 1 and a second electronically controlled variable pump 2. When the cable tension is less than 40KN, the electronic control system controller 5 does not start the first electronically controlled variable pump 1 or the second electronically controlled variable pump 2; when the cable tension is not less than 40KN, when the linear velocity value is less than 200m / s, the electronic control system controller 5 starts the electronically controlled variable pump with smaller output power among the first electronically controlled variable pump 1 and the second electronically controlled variable pump 2 to provide a hydraulic source for the hydraulic control valve block 3; when the linear velocity value is not less than 200m / s, the electronic control system controller 5 starts the electronically controlled variable pump with larger output power among the first electronically controlled variable pump 1 and the second electronically controlled variable pump 2 to provide a hydraulic source for the hydraulic control valve block 3.

[0028] Step 3, the hydraulic control valve block 3 switches the oil channel according to the size of the hydraulic source, thereby controlling the hydraulic variable motor 4 to output power;

[0029] Step 4: Control the speed of the power winch 9 according to the power output of the hydraulic variable motor 4, so as to share the load of the logging winch.

[0030] Example 1

[0031] The hydraulic transmission system for logging power winch proposed in this embodiment is as follows: Figure 1 As shown, it includes a cable parameter detection device 10, the cable parameter detection device 10 is connected to the electronic control system controller 5 through a wire, the electronic control system controller 5 is connected to the hydraulic supply device 11 through a wire, the hydraulic supply device 11 is connected to the hydraulic control valve block 3 through a wire, the hydraulic control valve block 3 is connected to the hydraulic variable motor 4 through a wire, the hydraulic variable motor 4 is connected to the power winch 9 through a wire, and the hydraulic control valve block 3 is also connected to the cooler 8 through a wire.

[0032] Example 2

[0033] The hydraulic transmission system for logging power winch proposed in this embodiment is as follows: Figure 1 As shown, it includes a cable parameter detection device 10, the cable parameter detection device 10 is connected to the electronic control system controller 5 through a wire, the electronic control system controller 5 is connected to the hydraulic supply device 11 through a wire, the hydraulic supply device 11 is connected to the hydraulic control valve block 3 through a wire, the hydraulic control valve block 3 is connected to the hydraulic variable motor 4 through a wire, the hydraulic variable motor 4 is connected to the power winch 9 through a wire, and the hydraulic control valve block 3 is also connected to the cooler 8 through a wire.

[0034] The cable parameter detection device 10 comprises a cable tension sensor 6 and a cable linear velocity sensor 7. The cable tension sensor 6 and the cable linear velocity sensor 7 are respectively connected to the electronic control system controller 5 through wires.

[0035] Example 3

[0036] The hydraulic transmission system for logging power winch proposed in this embodiment is as follows: Figure 1 As shown, it includes a cable parameter detection device 10, the cable parameter detection device 10 is connected to the electronic control system controller 5 through a wire, the electronic control system controller 5 is connected to the hydraulic supply device 11 through a wire, the hydraulic supply device 11 is connected to the hydraulic control valve block 3 through a wire, the hydraulic control valve block 3 is connected to the hydraulic variable motor 4 through a wire, the hydraulic variable motor 4 is connected to the power winch 9 through a wire, and the hydraulic control valve block 3 is also connected to the cooler 8 through a wire.

[0037] The cable parameter detection device 10 comprises a cable tension sensor 6 and a cable linear velocity sensor 7. The cable tension sensor 6 and the cable linear velocity sensor 7 are respectively connected to the electronic control system controller 5 through wires.

[0038] The hydraulic providing device 11 includes a first electronically controlled variable pump 1 and a second electronically controlled variable pump 2. The first electronically controlled variable pump 1 is connected to the hydraulic control valve block 3 and the electronic control system controller 5 through wires; the second electronically controlled variable pump 2 is connected to the hydraulic control valve block 3 and the electronic control system controller 5 through wires.

[0039] Example 4

[0040] The hydraulic transmission method proposed in this embodiment uses a hydraulic transmission system for a well logging power winch, and specifically includes the following steps:

[0041] Step 1: Use the cable parameter detection device 10 to detect the cable line speed value and the cable tension value of the ultra-deep well logging operation, and transmit the cable line speed value and the cable tension value to the electric control system controller 5;

[0042] The cable tension sensor 6 is used to detect the cable tension value, and the cable line speed sensor 7 is used to detect the cable line speed value.

[0043] Step 2, the electronic control system controller 5 makes a judgment based on the cable line speed value and the cable tension value, and starts the hydraulic pressure providing device 11, and the hydraulic pressure providing device 11 provides a hydraulic source for the hydraulic control valve block 3;

[0044] The specific method of step 2 is: the hydraulic providing device 11 includes a first electrically controlled variable pump 1 and a second electrically controlled variable pump 2. When the cable tension is less than 40KN, the first electrically controlled variable pump 1 or the second electrically controlled variable pump 2 is not started; when the cable tension is not less than 40KN, when the linear velocity value is less than 200m / s, the electrically controlled variable pump with smaller output power among the first electrically controlled variable pump 1 and the second electrically controlled variable pump 2 is started to provide a hydraulic source for the hydraulic control valve block 3; when the linear velocity value is not less than 200m / s, the electrically controlled variable pump with larger output power among the first electrically controlled variable pump 1 and the second electrically controlled variable pump 2 is started to provide a hydraulic source for the hydraulic control valve block 3;

[0045] Step 3, the hydraulic control valve block 3 switches the oil channel according to the size of the hydraulic source, thereby controlling the hydraulic variable motor 4 to output power;

[0046] Step 4: Control the speed of the power winch 9 according to the power output of the hydraulic variable motor 4, so as to share the load of the logging winch.

Claims

1. A hydraulic transmission system for a well logging power winch, characterized in that: The invention comprises a cable parameter detection device (10), wherein the cable parameter detection device (10) is connected to an electric control system controller (5) via a wire, the electric control system controller (5) is connected to a hydraulic pressure providing device (11) via a wire, the hydraulic pressure providing device (11) is connected to a hydraulic control valve block (3) via a wire, the hydraulic control valve block (3) is connected to a hydraulically controlled variable motor (4) via a wire, the hydraulically controlled variable motor (4) is connected to a power winch (9) via a wire, and the hydraulic control valve block (3) is also connected to a cooler (8) via a wire.

2. The hydraulic transmission system for logging power winch according to claim 1, characterized in that: The cable parameter detection device (10) comprises a cable tension sensor (6) and a cable linear speed sensor (7), and the cable tension sensor (6) and the cable linear speed sensor (7) are respectively connected to the electric control system controller (5) via wires.

3. The hydraulic transmission system for logging power winch according to claim 2, characterized in that: The hydraulic supply device (11) comprises a first electrically controlled variable pump (1) and a second electrically controlled variable pump (2); the first electrically controlled variable pump (1) is connected to the hydraulic control valve block (3) and the electronic control system controller (5) respectively through wires; the second electrically controlled variable pump (2) is connected to the hydraulic control valve block (3) and the electronic control system controller (5) respectively through wires.

4. A hydraulic transmission method, characterized in that: The hydraulic transmission system for logging power winch as claimed in claim 3 specifically comprises the following steps: Step 1: Use a cable parameter detection device (10) to detect the cable line speed value and the cable tension value of the ultra-deep well logging operation, and transmit the cable line speed value and the cable tension value to the electric control system controller (5); Step 2, the electronic control system controller (5) makes a judgment based on the cable line speed value and the cable tension value, and starts the hydraulic pressure providing device (11), and the hydraulic pressure providing device (11) provides a hydraulic source for the hydraulic control valve block (3); Step 3, the hydraulic control valve block (3) switches the oil channel according to the size of the hydraulic source, thereby controlling the hydraulic variable motor (4) to output power; Step 4: Control the rotation speed of the power winch (9) according to the output power of the hydraulic variable motor (4), so as to share the load of the logging winch.

5. The hydraulic transmission method according to claim 4, characterized in that: The specific method of using the cable parameter detection device (10) to detect the cable line speed value and tension value of the ultra-deep well logging operation is: using the cable tension sensor (6) to detect the cable tension value, and using the cable line speed sensor (7) to detect the cable line speed value.

6. The hydraulic transmission method according to claim 4, characterized in that: The specific method of step 2 is: the hydraulic pressure providing device (11) includes a first electrically controlled variable pump (1) and a second electrically controlled variable pump (2); when the cable tension is less than 40 kN, the electronic control system controller (5) does not start the first electrically controlled variable pump (1) or the second electrically controlled variable pump (2); When the cable tension is not less than 40 kN and the linear velocity is less than 200 m / s, the electronic control system controller (5) starts the electronic control variable pump with a smaller output power among the first electronic control variable pump (1) and the second electronic control variable pump (2) to provide a hydraulic source for the hydraulic control valve block (3); when the linear velocity is not less than 200 m / s, the electronic control system controller (5) starts the electronic control variable pump with a larger output power among the first electronic control variable pump (1) and the second electronic control variable pump (2) to provide a hydraulic source for the hydraulic control valve block (3).

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