An automatic device for making up and breaking out a tubular string

Abstract

The present application provides a kind of pipe string on unhooking automation device, it is related to oilfield operation equipment field.The pipe string on unhooking automation device, including hydraulic pipe gripping device and hydraulic tubing on unhooking tong, the hydraulic pipe gripping device includes base, the base is fixedly connected on operating wellhead flange by bolt, the hydraulic tubing on unhooking tong includes back tong part and main tong part, one side of the base is fixedly connected with hydraulic lifting mechanism, the telescopic end of the hydraulic lifting mechanism is fixedly connected with lifting arm, the back tong part is fixedly connected with rotary arm at one place away from tong mouth side, the rotary arm is rotatably connected at one place of lifting arm by drive assembly.The present application is simple in structure, small in size, light in weight, low in cost, small in floor area, strong in adaptability to well site, carried along with operation machine, does not need special equipment such as crane to carry and install, can effectively reduce operation construction cost, improves construction efficiency, greatly reduces labor intensity of staff.

Description

Technical Field

[0001] This invention relates to the field of oilfield operation equipment technology, specifically to an automated device for uncoupling tubing. Background Technology

[0002] Currently, most of the work involving running and uncoupling tubing in oilfields involves workers dragging and operating hydraulic clamps at the wellhead and lifting tubing clamps, which results in high labor intensity and affects construction efficiency.

[0003] Large-scale fully automated equipment is expensive, occupies a large area, has high requirements for the well site, and requires special equipment such as cranes for transportation and installation, resulting in high construction costs and low efficiency during construction, and is especially unsuitable for conventional well repair operations. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automated uncoupling device for tubing, which features a simple structure, small size, light weight, low cost, small footprint, strong adaptability to well sites, and can be transported with the work machine without the need for specialized equipment such as cranes for handling and installation. This device effectively reduces operational costs, improves construction efficiency, and significantly reduces the labor intensity of employees, thus solving the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automated tubing uncoupling device, comprising a hydraulic clamping tubing device and a hydraulic tubing uncoupling clamp. The hydraulic clamping tubing device includes a base, which is bolted to the working wellhead flange. The hydraulic tubing uncoupling clamp includes a back clamp and a main clamp. A hydraulic lifting mechanism is fixedly connected to one side of the base. The hydraulic lifting mechanism is vertically oriented, and a lifting arm is fixedly connected to the telescopic end of the hydraulic lifting mechanism. A rotating arm is fixedly connected to the back clamp on the side away from the clamp jaws, and the rotating arm is rotatably connected to the lifting arm via a drive assembly.

[0006] Preferably, a fixed sleeve is fixedly connected to one part of the upper surface of the lifting arm, and a fixed shaft is fixedly connected to one side of the fixed sleeve. The drive assembly includes a hydraulic motor, a transmission gear, and a power reversing gear. The hydraulic motor is fixedly connected to one part of the lower side of the lifting arm by bolts. The output end of the hydraulic motor is fixedly connected to the transmission gear. The lower surface of the transmission gear is rotatably connected to the upper end of the fixed sleeve. The side of the power reversing gear away from the gear teeth is fixedly connected to the side of the rotating arm near the transmission gear. One part of the rotating arm is rotatably connected to the outer wall of the fixed shaft. The transmission gear and the power reversing gear are meshed together.

[0007] Preferably, a control device is provided on the upper surface of the back clamp part away from the jaws. The control device is connected to the hydraulic hose uncoupling clamp, the hydraulic clamping hose device, the hydraulic lifting mechanism and the hydraulic motor through hydraulic control hoses.

[0008] Preferably, the method of using the automated uncoupling device on the tubing string includes the following steps: S1. First, connect the base of the hydraulic clamping tubing device to the working wellhead flange with bolts. S2. When it is necessary to perform tubing string uncoupling operations, the back clamp of the hydraulic tubing uncoupling pliers is hydraulically controlled by the control device to grip the working tubing that is being raised and lowered from the wellhead, while the main clamp is controlled to rotate clockwise or counterclockwise to perform tubing string uncoupling operations. S3. During the operation, according to the needs of the operation, the hydraulic motor output torque is controlled by the control device to drive the transmission gear to rotate. The transmission gear and the power reversing gear rotate, thereby driving the rotating arm to rotate along the fixed axis through the power reversing gear, which in turn drives the hydraulic hose uncoupling clamp to enter or exit the hose as needed. S4. During operation, the hydraulic lifting mechanism is extended and retracted by the control device according to the needs of the operation, so as to adjust the hydraulic hose uncoupling clamp distance and the height between the hydraulic hose clamping device as needed when lifting, lowering and uncoupling the hose.

[0009] This invention provides an automated uncoupling device for tubing. It has the following advantages: This invention uses a drive component to rotate a hydraulic tubing uncoupling clamp, allowing the drive unit to move closer to or further from the work area as needed. The structure is simple and highly stable. A hydraulic lifting mechanism drives the working end of the clamp to rise or fall as required, ensuring reliable operation. Working in conjunction with the drive component, it automates the uncoupling of tubing in oilfield workover operations. Furthermore, it is simple in structure, small in size, lightweight, low in cost, and occupies little space. It is highly adaptable to different well sites and can be transported with the workover rig without the need for cranes or other specialized equipment, effectively reducing workover costs, improving efficiency, and significantly reducing the workload of employees. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the hydraulic clamping oil pipe device of the present invention; Figure 3 This is a schematic diagram of the hydraulic clamping oil pipe device of the present invention from another perspective; Figure 4 This is a schematic diagram of the hydraulic hose uncoupling clamp structure of the present invention; Figure 5 This is a schematic diagram of the hydraulic hose uncoupling clamp of the present invention from another perspective. Figure 6 This is a schematic diagram of the transmission gear structure of the present invention; Figure 7 This is a schematic diagram of the power reversing gear structure of the present invention.

[0011] Among them, 1. Hydraulic clamping device for oil pipes; 101. Base; 102. Hydraulic lifting mechanism; 103. Lifting arm; 104. Fixed sleeve; 105. Fixed shaft; 2. Hydraulic oil pipe upper and lower clamp; 201. Back clamp part; 202. Rotating arm; 203. Main clamp part; 3. Drive assembly; 301. Hydraulic motor; 302. Transmission gear; 303. Power reversing gear; 4. Control device. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] Example 1: like Figure 1-7 As shown, this embodiment of the invention provides an automated tubing uncoupling device, including a hydraulic tubing clamping device 1 and a hydraulic tubing uncoupling clamp 2. The hydraulic tubing clamping device 1 includes a base 101, which is fixedly connected to the working wellhead flange by bolts. The hydraulic tubing uncoupling clamp 2 includes a back clamp part 201 and a main clamp part 203. A hydraulic lifting mechanism 102 is fixedly connected to one side of the base 101. The hydraulic lifting mechanism 102 is vertically arranged. A lifting arm 103 is fixedly connected to the telescopic end of the hydraulic lifting mechanism 102. A rotating arm 202 is fixedly connected to a part of the back clamp part 201 away from the clamp jaws. A part of the rotating arm 202 is rotatably connected to a part of the lifting arm 103 through a drive assembly 3. The hydraulic tubing uncoupling clamp 2 is rotated by the drive component 3, allowing its drive unit to move away from or closer to the work area according to operational needs. This design is simple and highly stable. The hydraulic lifting mechanism 102 drives the working end of the hydraulic tubing uncoupling clamp 2 to be raised or lowered according to operational requirements. This reliable drive, combined with the drive component 3, enables automated uncoupling of tubing in oilfield workover operations. Furthermore, the design is simple, small in size, lightweight, low in cost, and occupies a small area. It is highly adaptable to different well sites and can be transported with the workover rig without the need for cranes or other specialized equipment, effectively reducing operational costs, improving efficiency, and significantly reducing the labor intensity of employees.

[0014] A fixed sleeve 104 is fixedly connected to one part of the upper surface of the lifting arm 103. A fixed shaft 105 is fixedly connected to one side of the fixed sleeve 104. The drive assembly 3 includes a hydraulic motor 301, a transmission gear 302, and a power reversing gear 303. The hydraulic motor 301 is fixedly connected to one part of the lower side of the lifting arm 103 by bolts. The output end of the hydraulic motor 301 is fixedly connected to the transmission gear 302. The lower surface of the transmission gear 302 is rotatably connected to the upper end of the fixed sleeve 104. The side of the power reversing gear 303 away from the gear teeth is fixedly connected to the side of the rotating arm 202 near the transmission gear 302. One part of the rotating arm 202 is rotatably connected to the outer wall of the fixed shaft 105. The transmission gear 302 and the power reversing gear 303 are meshed. The hydraulic motor 301 outputs torque to drive the transmission gear 302 to rotate. The transmission gear 302 meshes with the power reversing gear 303, thereby driving the hydraulic hose uncoupling clamp 2 to rotate at an angle through the lifting arm 103, so that its drive part is moved away from or closer to the working area according to the operation requirements.

[0015] A control device 4 is provided on the upper surface of the back clamp 201 away from the jaws. The control device 4 is connected to the hydraulic hose uncoupling clamp 2, the hydraulic clamping hose device 1, the hydraulic lifting mechanism 102 and the hydraulic motor 301 through hydraulic control hoses. The hydraulic pipeline connection and driving principle of this device are well known to those skilled in the art and will not be described in detail here.

[0016] Example 2: This embodiment provides a method for using an automated uncoupling device on a tubing string, including the following steps: S1. First, connect the base 101 of the hydraulic clamping tubing device 1 to the working well flange with bolts. S2. When it is necessary to perform tubing string uncoupling operations, the back clamp 201 of the hydraulic tubing uncoupling clamp 2 is hydraulically controlled by the control device 4 to grip and clamp the working tubing raised and lowered at the wellhead, while the main clamp 203 is controlled to rotate clockwise or counterclockwise to perform tubing string uncoupling operations. S3. During the operation, according to the operation requirements, the hydraulic motor 301 is hydraulically controlled by the control device 4 to output torque to drive the transmission gear 302 to rotate. The transmission gear 302 and the power reversing gear 303 rotate, thereby driving the rotating arm 202 to rotate along the fixed shaft 105 through the power reversing gear 303, which in turn drives the hydraulic oil pipe uncoupling clamp 2 to enter or exit the oil pipe as needed. S4. During the operation, the hydraulic lifting mechanism 102 is extended and retracted by the control device 4 according to the operation requirements, so as to adjust the height between the hydraulic oil pipe uncoupling clamp distance 2 and the hydraulic clamping oil pipe device 1 as needed when the oil pipe is lifted, lowered and uncoupled.

[0017] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automated tubing uncoupling device, comprising a hydraulically driven tubing clamping device (1) and a hydraulic tubing uncoupling clamp (2), wherein the hydraulically driven tubing clamping device (1) comprises a base (101), the base (101) being bolted to the working wellhead flange, and the hydraulic tubing uncoupling clamp (2) comprises a back clamp (201) and a main clamp (203), characterized in that: A hydraulic lifting mechanism (102) is fixedly connected to one side of the base (101). The hydraulic lifting mechanism (102) is vertically arranged. A lifting arm (103) is fixedly connected to the telescopic end of the hydraulic lifting mechanism (102). A rotating arm (202) is fixedly connected to the back clamp (201) away from the jaw. A part of the rotating arm (202) is rotatably connected to a part of the lifting arm (103) through a drive assembly (3). A fixed sleeve (104) is fixedly connected to one part of the upper surface of the lifting arm (103), and a fixed shaft (105) is fixedly connected to one side of the fixed sleeve (104). The drive assembly (3) includes a hydraulic motor (301), a transmission gear (302), and a power reversing gear (303). The hydraulic motor (301) is fixedly connected to one part of the lower side of the lifting arm (103) by bolts. The output end of the hydraulic motor (301) is fixedly connected to the transmission gear (302). The lower surface of the transmission gear (302) is rotatably connected to the upper end of the fixed sleeve (104). The side of the power reversing gear (303) away from the gear teeth is fixedly connected to the side of the rotating arm (202) near the transmission gear (302). One part of the rotating arm (202) is rotatably connected to the outer wall of the fixed shaft (105). The transmission gear (302) and the power reversing gear (303) are meshed.

2. The automated uncoupling device for a tubing string according to claim 1, characterized in that: A control device (4) is provided on the upper surface of the back clamp (201) away from the jaws. The control device (4) is connected to the hydraulic hose release clamp (2), the hydraulic clamping hose device (1), the hydraulic lifting mechanism (102), and the hydraulic motor (301) through hydraulic control hoses.

3. An automated uncoupling device for a tubing string according to claim 1 or 2, characterized in that: The method of using the automated uncoupling device on the tubing string includes the following steps: S1. First, connect the base (101) of the hydraulic clamping tubing device (1) to the working well flange with bolts; S2. When it is necessary to perform the pipe string uncoupling operation, the back clamp (201) of the hydraulic tubing uncoupling clamp (2) is hydraulically controlled by the control device (4) to hold the working tubing raised and lowered at the wellhead, and at the same time the main clamp (203) is controlled to rotate clockwise or counterclockwise to perform the tubing uncoupling operation. S3. During the operation, according to the operation requirements, the hydraulic motor (301) outputs torque through the control device (4) to drive the transmission gear (302) to rotate. The transmission gear (302) and the power reversing gear (303) rotate, thereby driving the rotating arm (202) to rotate along the fixed shaft (105) through the power reversing gear (303), and then driving the hydraulic hose uncoupling clamp (2) to enter or exit the hose as needed. S4. During the operation, the hydraulic lifting mechanism (102) is extended and retracted by the control device (4) according to the operation needs, so as to adjust the height between the hydraulic oil pipe uncoupling clamp (2) and the hydraulic clamping oil pipe device (1) as needed when the oil pipe is lifted, lowered and uncoupled.

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