A fully automatic cleaning and maintenance device for downhole tools

Abstract

The present invention discloses a fully automatic cleaning and maintenance device for downhole tools, which is mainly composed of a control module and a mechanical module. The mechanical module comprises a cleaning unit, a water supply unit, an air supply unit and an oil supply unit matched with the cleaning unit, and a connecting pipeline. The control module can control the water supply unit, the air supply unit and the oil supply unit matched with the cleaning unit, and through a high-pressure cleaning machine, an oil pump, an air compressor and a water spray gun, an oil spray gun and an air spray gun connected thereto, the present invention can select four programs of "fully automatic", "cleaning", "drying" and "oil spraying", complete the cleaning and maintenance of the downhole tools with less wear and tear, and achieve the purpose of being reusable.

Description

Technical Field

[0001] The invention relates to a cleaning and maintenance device and a cleaning and maintenance method for a downhole power drill in the drilling field, in particular to a fully automatic cleaning and maintenance device for downhole tools. Background Art

[0002] Torsion impact tool is a kind of downhole impact power drilling tool, which was developed by the Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd. in China in 2010. It is a disposable consumable. With the serialization and popularization of SL torsion impact products, some tools can only be used for dozens or even dozens of hours because they are filled with mud and cannot be used immediately, which is far from the promised life of 150 hours. Summary of the invention

[0003] The purpose of the present invention is to address the problem that torsion punch tools lack necessary cleaning and maintenance means, resulting in shortened service life. The present invention provides a fully automatic cleaning and maintenance device for downhole tools that can clean and maintain torsion punch tools that have been used for a shorter time so that they can be reused, thereby solving the problem of reusing some torsion punch tools with less wear.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A fully automatic cleaning and maintenance device for downhole tools mainly consists of a mechanical module and a control module.

[0006] The mechanical module comprises a cleaning unit, a water supply unit, an air supply unit and an oil supply unit matched with the cleaning unit, and connecting pipelines.

[0007] The cleaning unit comprises: a frame shell with a sealed periphery and a steel brush arranged on the inner wall of the frame shell, a rotating tray located below the steel brush, a machine cover matched with the top cover of the frame shell, a bottom plate located below the rotating tray and sealed and connected to the frame shell, a motor located below the bottom plate, a motor drive shaft seal passing through the bottom plate and linked with the rotating tray, a water spray gun, an oil spray gun, and an air spray gun arranged on the machine cover around the central axis, and a drain pipe, a water spray gun, and an air spray gun arranged on the outer periphery of the frame shell above the bottom plate.

[0008] The water supply unit comprises: a high pressure cleaning machine, a water supply end of the high pressure cleaning machine is respectively connected to the water spray guns on the machine cover and the frame shell through a water pipe three-way switch, and a water supply end of the high pressure cleaning machine is connected to a water source through a water pipe solenoid valve.

[0009] The air supply unit comprises an air compressor, and the air delivery end of the air compressor is connected to the air spray guns on the machine cover and the frame shell respectively through an air pipe solenoid valve and an air pipe three-way switch.

[0010] The oil supply unit comprises an oil pump, an oil delivery end of the oil pump is connected to the oil spray gun on the engine cover through an oil pipe solenoid valve, and an oil supply end of the oil pump is connected to an oil storage tank.

[0011] The control module includes a power supply and a controller, and the controller is respectively connected and controlled with the motor, the high-pressure cleaning machine, the oil pump, the air compressor, the water pipe solenoid valve, the air pipe solenoid valve, the air pipe three-way switch, the water pipe three-way switch, and the oil pipe solenoid valve.

[0012] The above scheme further comprises:

[0013] The rotating tray is provided with an axial hole, a radial through hole and a positioning pin; the positioning pin is locked with the transmission shaft and the rotating tray.

[0014] The discharge pipe is connected with a discharge valve, which is an electromagnetic control valve and is connected with a controller for control.

[0015] A steel brush fixing frame is arranged on the inner wall of the frame shell, and the steel brush is in a strip shape and is installed on the steel brush fixing frame.

[0016] The motor is a variable frequency direct drive motor, and a seal and a bearing are provided at the joint between the motor transmission shaft and the bottom plate.

[0017] Bearings and seals are respectively installed at the joints of the water spray gun, oil spray gun, air spray gun and the engine cover.

[0018] The present invention adopts a fully automatic programmed, closed cleaning and maintenance solution. Four programs, "fully automatic", "cleaning", "drying" and "oil spraying" are designed in the controller. The program flow of "fully automatic" is: cleaning-drying-oil spraying maintenance; while the other three programs only perform a single "cleaning", "drying" and "oil spraying" function to complete the cleaning and maintenance of the downhole tools with less wear, so as to achieve the purpose of re-application. The advantages of the present invention are: fast, efficient and automatic completion of the cleaning and maintenance of the downhole tools with less wear, which can greatly reduce the use cost of the downhole tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a layout diagram of a fully automatic downhole tool cleaning and maintenance device;

[0020] Figure 2 A cross-sectional view of a frame shell of a fully automatic downhole tool cleaning and maintenance device;

[0021] Figure 3 for Figure 2 Cross-sectional view along section EE;

[0022] Figure 4 for Figure 2 Enlarged view of the rotating tray.

[0023] Markings in the figure: 100-control module, 101-power supply, 102-controller, 103-water pipe solenoid valve, 104-air pipe solenoid valve, 105-air pipe three-way switch, 106-oil pipe solenoid valve, 107-water pipe three-way switch, 108-discharge valve, 200-mechanical module, 201-frame shell, 202-motor, 203-drive shaft, 204-rotating tray, 205-steel brush fixing frame , 206-steel brush, 207-machine cover, 208-seal, 209-bearing, 210-water spray gun, 211-oil spray gun, 212-air spray gun, 213-drain pipe, 214-high pressure cleaning machine, 215-water source, 216-oil pump, 217-oil storage tank, 218-air compressor, 2041-axial hole, 2042-radial through hole, 2043-locating pin, 300-downhole tool. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Embodiment 1, a fully automatic cleaning and maintenance device for downhole tools, mainly composed of a mechanical module 200 and a control module 100;

[0026] The mechanical module includes a cleaning unit, a water supply unit, an air supply unit and an oil supply unit matched with the cleaning unit, and connecting pipelines;

[0027] The cleaning unit comprises: a frame shell 201 with a closed periphery and a steel brush 206 arranged on the inner wall of the frame shell 201, a rotating tray 204 located below the steel brush 206, a cover 207 matched with the top cover of the frame shell 201, a bottom plate located below the rotating tray 204 and sealed and connected to the frame shell 201, a motor 202 located below the bottom plate, a transmission shaft 203 of the motor 202 seals through the bottom plate and then links with the rotating tray 204, a water spray gun 210, an oil spray gun 211, and an air spray gun 212 arranged on the cover 207 around the central axis, and a drain pipe 213, a water spray gun 210, and an air spray gun 212 arranged on the outer periphery of the frame shell 201 above the bottom plate;

[0028] The water supply unit includes: a high-pressure cleaning machine 214, the water supply end of the high-pressure cleaning machine 214 is connected to the machine cover 207 and the water spray gun 210 on the frame shell 201 through the water pipe three-way switch 107, and the water supply end of the high-pressure cleaning machine 214 is connected to the water source 215 through the water pipe solenoid valve 103;

[0029] The air supply unit includes: an air compressor 218, the air delivery end of the air compressor 218 is connected to the machine cover 207 and the air spray gun 212 on the frame shell 201 through the air pipe solenoid valve 104 and the air pipe three-way switch 105 respectively;

[0030] The oil supply unit includes: an oil pump 216, the oil delivery end of the oil pump 216 is connected to the oil spray gun 211 on the engine cover 207 through the oil pipe solenoid valve 106, and the oil supply end of the oil pump 216 is connected to the oil storage tank 217;

[0031] The control module 100 includes a power supply 101 and a controller 102, and the controller 102 is connected and controlled with the motor 202, the high-pressure cleaner 214, the oil pump 216, the air compressor 218 and the water pipe solenoid valve 103, the air pipe solenoid valve 104, the air pipe three-way switch 105, the water pipe three-way switch 107, and the oil pipe solenoid valve 106 respectively.

[0032] Furthermore, the rotating tray 204 is provided with an axial hole 2041 , a radial through hole 2042 , and a positioning pin 2043 ; the positioning pin 2043 is locked with the transmission shaft 203 and the rotating tray 204 .

[0033] Furthermore, the discharge pipe 213 is connected to a discharge valve 108 , which is an electromagnetic control valve and is connected to the controller 102 for control.

[0034] Furthermore, a steel brush fixing frame 205 is provided on the inner wall of the frame shell 201 , and the steel brush 206 is strip-shaped and installed on the steel brush fixing frame 205 .

[0035] Furthermore: the motor 202 is a variable frequency direct drive motor, and a seal 208 and a bearing 209 are provided at the joint between the transmission shaft 203 of the motor 202 and the bottom plate.

[0036] Furthermore, bearings 209 and seals 208 are respectively installed at the joints between the water spray gun 210, the oil spray gun 211, the air spray gun 212 and the machine cover 207.

[0037] Typical embodiments

[0038] See attached Figure 1 , 2 , 3 and 4, a fully automatic cleaning and maintenance device for downhole tools, mainly composed of a control module 100 and a mechanical module 200, the control module 100 mainly includes a power supply 101, a controller 102, a water pipe solenoid valve 103, an air pipe solenoid valve 104, an air pipe three-way switch 105, an oil pipe solenoid valve 106, a water pipe three-way switch 107, and a discharge valve 108; the mechanical module 200 mainly includes a frame shell 201, a variable frequency direct drive motor 202, a transmission shaft 203, a rotating tray 204, a steel brush fixing frame 205, a steel brush 206, a machine cover 207, a seal 208, a bearing 209, a water spray gun 210, an oil spray gun 211, an air spray gun 212, a drain pipe 213, a high-pressure cleaner 214, a water source 215, an oil pump 216, an oil storage tank 217, and an air compressor 218.

[0039] The rotating tray 204 is driven by a variable frequency direct drive motor 202, on which a downhole tool 300 can be fixed. The steel brush fixing frame 205 is fixed to the frame housing 201, and a strip steel brush 206 can be loaded and unloaded from the upper end; the machine cover 207 is respectively equipped with a water spray gun 210, an oil spray gun 211, and an air spray gun 212, and bearings 209 and seals 208 are respectively installed between the three spray guns and the machine cover 207 from top to bottom; the frame housing 201 is also respectively equipped with a water spray gun 210, an air spray gun 212, and the machine cover 2 The water spray gun 210 on the cover 207 and the frame shell 201 is connected to the water pipe three-way switch 107 and then connected to the high-pressure cleaning machine 214. A water pipe solenoid valve 103 is installed between the high-pressure cleaning machine 214 and the water source; the air spray gun 212 on the cover 207 and the frame shell 201 is connected to the air pipe three-way switch 105 at the same time and then connected to the air compressor 218 through the air pipe solenoid valve 104; the oil spray gun 211 on the cover 207 is connected to the oil pump 216 through the oil pipe solenoid valve 106, and the oil pump 216 is connected to the oil storage tank 217. Figure 4 The rotating tray 204 has an axial hole 2041, a radial through hole 2042, and a positioning pin 2043 in structure.

[0040] The controller 102 in the control module 100 is respectively connected to the power supply 101, the water pipe solenoid valve 103, the air pipe solenoid valve 104, the air pipe three-way switch 105, the oil pipe solenoid valve 106, the water pipe three-way switch 107, and the discharge valve 108. The controller 102 is designed with four programs: "full automatic", "cleaning", "drying", and "oil spraying". When "cleaning" is selected, the variable frequency direct drive motor 202 drives the rotating tray 204 on which the downhole tools are installed, and steel brushes 206 are provided on both sides to clean the outer wall of the tools, the high pressure cleaning machine 214 is turned on, and the water spray gun 210 sprays water. After cleaning for a period of time, the high pressure cleaning machine 214 is turned off, the water spray gun 210 stops spraying water, and the discharge valve 108 is opened; when "drying" is selected, the air compressor 218 is turned on, and the air spray gun 212 sprays high-pressure air. After a period of time, the air compressor 218 is turned off; when "oil spraying" is selected, the variable frequency direct drive motor 202 drives the rotating tray 204 on which the downhole tools are installed, the oil pump 216 is turned on, and the oil spray gun 211 sprays oil. After spraying oil for a period of time, the oil pump 216 is turned off, the oil spray gun 211 stops spraying oil, and the discharge valve 108 is opened; when "fully automatic" is selected, the "cleaning", "drying" and "oil spraying" programs are run in sequence.

[0041] The fully automatic cleaning and maintenance method for downhole tools of the present invention can select four programs of "fully automatic", "cleaning", "drying" and "spraying oil". When "cleaning" is selected, the variable frequency direct drive motor drives the rotating tray on which the downhole tool 300 is installed, and steel brushes are provided on both sides to clean the outer wall of the tool, the high pressure cleaning machine is turned on, the water spray gun sprays water, after cleaning for a period of time, the high pressure cleaning machine is turned off, the water spray gun stops spraying water, and the discharge valve is opened; when "drying" is selected, the air compressor is turned on, the air spray gun sprays high-pressure air, after a period of time, the air compressor is turned off; when "spraying oil" is selected, the variable frequency direct drive motor drives the rotating tray on which the downhole tool is installed, the oil pump is turned on, the oil spray gun sprays oil, after spraying oil for a period of time, the oil pump is turned off, the oil spray gun stops spraying oil, and the discharge valve is opened; when "fully automatic" is selected, the "cleaning", "drying" and "spraying oil" programs are run in sequence. Therefore, a fully automatic downhole tool cleaning and maintenance device and method of the present invention can complete the cleaning and maintenance of downhole tools with less wear and tear, and achieve the purpose of being reusable.

Claims

1. A fully automatic cleaning and maintenance device for downhole tools, characterized in that: The invention is composed of a mechanical module (200) and a control module (100); the mechanical module comprises a cleaning unit, a water supply unit, an air supply unit and an oil supply unit matched with the cleaning unit, and connecting pipelines; the cleaning unit comprises: a peripherally sealed frame shell (201) and a steel brush (206) arranged on the inner wall of the frame shell (201), a rotating tray (204) located below the steel brush (206), a cover (207) matched with the top cover of the frame shell (201), a bottom plate located below the rotating tray (204) and sealed and connected with the frame shell (201), and a motor (207) located below the bottom plate. 02), the transmission shaft (203) of the motor (202) is sealed and passes through the bottom plate and then linked with the rotating tray (204), a water spray gun (210), an oil spray gun (211), an air spray gun (212) arranged on the cover (207) around the central axis, and a drain pipe (213), a water spray gun (210), and an air spray gun (212) arranged on the outer periphery of the frame shell (201) above the bottom plate; the water supply unit comprises: a high-pressure cleaning machine (214), the water delivery end of the high-pressure cleaning machine (214) is respectively connected to the spray guns on the cover (207) and the frame shell (201) through a water pipe three-way switch (107); The water gun (210) is connected to the high-pressure cleaning machine (214), and the water supply end of the high-pressure cleaning machine (214) is connected to the water source (215) through the water pipe electromagnetic valve (103); the air supply unit comprises: an air compressor (218), and the air delivery end of the air compressor (218) is connected to the air spray gun (212) on the machine cover (207) and the frame shell (201) through the air pipe electromagnetic valve (104) and the air pipe three-way switch (105); the oil supply unit comprises: an oil pump (216), and the oil delivery end of the oil pump (216) is connected to the oil spray gun (211) on the machine cover (207) through the oil pipe electromagnetic valve (106), and the oil supply end of the oil pump (216) is connected to the oil spray gun (211) on the machine cover (207). The oil end is connected to an oil storage tank (217); the control module (100) comprises a power supply (101) and a controller (102); the controller (102) is respectively connected to and controlled by a motor (202), a high-pressure cleaning machine (214), an oil pump (216), an air compressor (218), a water pipe solenoid valve (103), an air pipe solenoid valve (104), an air pipe three-way switch (105), a water pipe three-way switch (107), and an oil pipe solenoid valve (106); a downhole tool (300) can be fixed on the rotating tray (204); and the controller (102) is designed with four programs: fully automatic, cleaning, drying, and oil spraying.

2. The fully automatic cleaning and maintenance device for downhole tools according to claim 1 is characterized in that: The rotating tray (204) is provided with an axial hole (2041), a radial through hole (2042), and a positioning pin (2043); the positioning pin (2043) is locked with the transmission shaft (203) and the rotating tray (204).

3. The fully automatic cleaning and maintenance device for downhole tools according to claim 1 or 2, characterized in that: The discharge pipe (213) is connected to a discharge valve (108), which is an electromagnetic control valve and is connected to a controller (102) for control.

4. The fully automatic cleaning and maintenance device for downhole tools according to claim 3 is characterized in that: A steel brush fixing frame (205) is provided on the inner wall of the frame housing (201), and the steel brush (206) is strip-shaped and is installed on the steel brush fixing frame (205).

5. The fully automatic cleaning and maintenance device for downhole tools according to claim 4 is characterized in that: The motor (202) is a variable frequency direct drive motor, and a sealing member (208) and a bearing (209) are provided at the joint between the transmission shaft (203) of the motor (202) and the bottom plate.

6. The fully automatic cleaning and maintenance device for downhole tools according to claim 5 is characterized in that: Bearings (209) and sealing elements (208) are respectively installed at the joints between the water spray gun (210), the oil spray gun (211), the air spray gun (212) and the machine cover (207).

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