Electric-driven automatic workover operation equipment for upright derrick and operation method of electric-driven automatic workover operation equipment

Abstract

The invention discloses electric-drive automatic workover operation equipment for a vertical derrick. The electric-drive automatic workover operation equipment comprises a self-propelled chassis, the vertical self-balancing derrick, a traveling block guide rail, a traveling block, an electric winch, a wellhead automatic platform and a hydraulic pipe conveying machine. The self-propelled chassis is installed at the bottom of the main vehicle and provided with four stepping supporting legs, and a stepping device is arranged below each stepping supporting leg. A balance beam type crown block is mounted at the top end of the upright self-balancing derrick; the traveling block guide rail is arranged along the front side of the upright self-balancing derrick; the traveling block moves up and down along the traveling block guide rail; the wellhead automatic platform is integrated with a hydraulic clamp, a righting manipulator and an automatic hoop finder; the hydraulic pipe conveying machine adopts a horizontal-to-vertical bidirectional lifting mechanism, the vertical self-balancing derrick is configured, a loaded crown block is small in offset, the derrick is configured with a traveling block guide rail, a traveling block moves along with the guide rail and is small in wind load drift, the wellhead pipe column handover processing efficiency is high, and the time for a traveling crane system of the workover rig to participate in pipe column handover is shorter; and the overall efficiency of the automatic tubular column processing operation of the workover rig is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of well repair operation equipment. More particularly, the present application relates to a straight derrick electric drive automated well repair operation equipment and operation method. BACKGROUND

[0002] With the continuous development of the oil industry, the green, efficient and automated operation of oil well repair equipment is the development trend of the industry. At present, the domestic and foreign small repair operation well repair machine is mainly driven by diesel, and is matched with a tilt angle mast. The displacement of the load trolley is large, the wellhead is easily deviated when the pipe string is lifted, the empty trolley is easily shaken, and the automatic pipe string processing catwalk with horizontal transfer pipe string is usually configured. The efficiency of the wellhead pipe string automation processing is low, and the intelligent and unmanned development is limited. The existing well repair machine derrick design adopts a front opening type upper and lower body double section telescopic type telescopic derrick. The derrick is inclined when operating. The displacement of the load trolley is large. The pipe string is deviated at the wellhead. The empty trolley is easily shaken. The pipe string transfer processing efficiency is low. SUMMARY

[0003] In order to achieve these objects and other advantages according to the present application, a preferred embodiment of the present application provides a straight derrick electric drive automated well repair operation equipment, characterized in that it comprises a self-propelled chassis, a straight self-balancing derrick, a trolley guide rail, a trolley, a wellhead automation platform and a hydraulic pipe feeding machine. The self-propelled chassis is installed at the bottom of the main vehicle. The self-propelled chassis is provided with a plurality of step legs. A step device is arranged below each step leg. The step device can be horizontally telescopic and can rotate around the shaft of the step leg, thereby realizing multi-directional movement adjustment of the main vehicle with the straight self-balancing derrick. The step device comprises a horizontal telescopic oil cylinder, a step sliding shoe and a pressure sensor. The horizontal telescopic oil cylinder is horizontally connected to the bottom of the step leg. The step sliding shoe is horizontally connected to the horizontal telescopic oil cylinder. The pressure sensor is installed at the connection part of the horizontal telescopic oil cylinder and the step sliding shoe. The straight self-balancing derrick is provided with a balanced beam type trolley at the top end. The bottom of the straight self-balancing derrick is hingedly connected to the main vehicle. The trolley guide rail is arranged along the front side of the straight self-balancing derrick. The trolley moves up and down along the trolley guide rail to prevent wind load deviation. The wellhead automation platform is installed at the tail of the main vehicle. The wellhead automation platform is integrated with a hydraulic clamp and a centralizing manipulator. The hydraulic clamp is used to clamp the top end of the pipe string. The centralizing manipulator is used to centralize the body of the pipe string. The hydraulic pipe feeding machine is installed on the ground. The hydraulic pipe feeding machine adopts a horizontal to vertical bidirectional lifting mechanism to realize the horizontal-vertical posture conversion of the pipe string and the transfer of the pipe string between the wellhead automation platform.

[0004] According to a preferred embodiment of the present application, the vertical self-balancing derrick adopts a vertical nested telescopic structure.

[0005] According to a preferred embodiment of the present application, the balance beam trolley at the top end of the vertical self-balancing derrick comprises two groups of pulley blocks, respectively connected to the dead rope fixer and electric winch on the traveling block and the main block.

[0006] According to a preferred embodiment of the present application, a ground pipe conveying machine is further included, which conveys the pipe string from the ground to the hydraulic pipe feeding machine.

[0007] In another aspect, a preferred embodiment of the present application further provides a working method of the vertical derrick electric drive automated workover operation equipment, comprising the following steps: S1, main block step adjustment By controlling the step leg telescoping and the step device rotation, the self-propelled chassis is accurately moved to the well mouth position, and the derrick and the wellbore are centered; S2, derrick hoisting The hoisting mechanism is used to control the derrick rotation until the derrick is vertically arranged, and in this process, the self-balancing trolley is synchronously unfolded, and the rotation shaft is locked in the working state; S3, pipe string lowering The ground pipe conveying machine conveys the horizontal pipe string to the pipe feeding machine clamping hand, lifts it to the vertical state, and then connects with the traveling block elevator; the traveling block moves downward along the traveling block guide rail to lower the pipe string to the well mouth, the centralizing mechanical hand automatically corrects the posture, the hydraulic clamp completes the make-up and break-out operation, and the threaded connection between the new pipe string and the old pipe string is completed; The centralizing mechanical hand corrects the perpendicularity of the pipe string in real time during the hoisting process; S4, finishing stage After the work is completed, the traveling block is reset to a safe position, and the derrick is stably laid down to the transportation state; The step leg is retracted.

[0008] The present application at least has the following beneficial effects: the vertical self-balancing derrick of the present application has small load trolley deviation, the derrick is provided with a traveling block guide rail, the traveling block moves with the guide rail and has small wind load drift, and the well mouth pipe string connection processing efficiency is high. The pipe string conveying and the traveling block system run synchronously, the traveling block system of the workover machine participates in the pipe string connection for a shorter time, and the overall efficiency of the automatic pipe string processing operation of the workover machine is improved.

[0009] Other advantages, objects, and features of the present application will be partly embodied in the following description, and partly understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a construction schematic diagram of S1 in the present application.

[0011] Figures 2-3 The construction schematic of S2 in the present application.

[0012] Figures 4-5 The construction schematic of S3 in the present application.

[0013] Figure 6 The connection schematic of the step leg and the stepping device in the present application. DETAILED DESCRIPTION

[0015] The present application will be further described below in conjunction with the drawings, so that those skilled in the art can implement the present application according to the description and the drawings.

[0016] The following description is used to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the present application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0017] Those skilled in the art should understand that in the disclosure of the present application, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0018] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0019] As Figures 1-6 shown, a preferred embodiment of the present application provides a straight derrick electric drive automated workover operation equipment, which comprises a self-propelled chassis 1, a straight self-balancing derrick 2, a traveling block guide rail 3, a traveling block 4, an automatic wellhead platform, a hydraulic pipe loader 6, an electric winch and a central control system; The self-propelled chassis 1 is installed at the bottom of the main vehicle 8, the self-propelled chassis 1 is provided with four step legs 9, a stepping device 10 is arranged below each step leg 9, the stepping device 10 can be horizontally telescopic and can rotate around the axis of the step leg 9, thereby realizing multi-directional movement adjustment of the main vehicle with the straight self-balancing derrick 2; The upright self-balancing derrick 2 is provided with a balance beam trolley 11 at the top end, and is hingedly connected to the main car 8 at the bottom end. The balance beam trolley comprises two groups of pulley blocks, which are respectively connected to the dead rope fixer and the electric winch on the main car 8 and the traveling car. The traveling car guide rail 3 is arranged along the front side of the upright self-balancing derrick 2, and the traveling car 4 moves up and down along the traveling car guide rail to prevent wind load deviation. The wellhead automatic platform is suspended at the tail of the main car 8, and is integrated with a hydraulic clamp 5-1 and a centralizing manipulator 5-2. The hydraulic clamp 5-1 is used for clamping the top end of the pipe string, and the centralizing manipulator 5-2 is used for centralizing the body of the pipe string. The hydraulic pipe feeding machine 6 is installed on the ground, and adopts a horizontal-to-vertical bidirectional lifting mechanism to realize the horizontal-to-vertical posture conversion of the pipe string and the transfer of the pipe string between the wellhead automatic platform.

[0020] In the above technical solution, the stepping device 10 under each stepping leg 9 of the self-propelled chassis 1 can be horizontally extended and retracted and rotated around the axis of the stepping leg 9. Before operation, the central control system connects the stepping leg 9 and the stepping leg 9 and controls the extension and retraction of the stepping leg 9, cooperates with the horizontal movement and rotation of the stepping device 10, and drives the self-propelled chassis 1 to move accurately, so that the equipment is aligned with the wellhead position. The upright self-balancing derrick 2 is arranged upright, and the bottom is connected to the main car 8 through a hinged shaft. The balance beam trolley 11 at the top end comprises two groups of pulley blocks, one of which is connected to the traveling car 4, and the other of which is connected to the dead rope fixer and the electric winch on the main car 8. When the electric winch works, it drives the pulley block to rotate through the steel wire rope, and realizes the lifting of the traveling car 4. The traveling car guide rail 3 is vertically fixed at the tail end of the main car 8, and the traveling car 4 moves up and down along the traveling car guide rail. The hydraulic clamp 5-1 and the centralizing manipulator 5-2 integrated on the wellhead automatic platform work cooperatively. The hydraulic clamp 5-1 can clamp the top end of the pipe string 12, and the centralizing manipulator 5-2 clamps the body of the pipe string 12 from both sides to correct the perpendicularity. The hydraulic pipe feeding machine 6 is installed on the ground, which can grab the pipe string 12 in a horizontal state from the ground pipe feeding machine, realize the posture conversion of the pipe string 12 from horizontal to vertical, and then transfer the pipe string 12 to the elevator on the traveling car 4.

[0021] Among them, the self-propelled chassis 1 is not only used for supporting the main car and the derrick, but also realizes the multi-directional movement adjustment of the main car through the stepping leg 9 and the stepping device 10. This design enables the equipment to move flexibly in a complex construction site and quickly align with the wellhead. The combination of the stepping leg 9 and the stepping device 10 makes the equipment more stable during movement, and through the horizontal extension and rotation function, it can realize accurate centering operation and reduce manual intervention.

[0022] The upright self-balancing derrick is the core component of the entire equipment, and the balance beam type trolley at the top end thereof is connected with the dead rope fixer on the traveling block and the main block through a pulley block to ensure the stability of the derrick during hoisting and operation. The design of the upright self-balancing derrick can effectively reduce the deviation caused by wind load or improper operation, and the hinged connection at the bottom thereof enables flexible adjustment of the angle to adapt to different operation requirements.

[0023] The hydraulic pipe feeding machine is installed on the ground, and the posture conversion of the pipe string from horizontal to vertical is realized through the horizontal-to-vertical bidirectional lifting mechanism, and the pipe string is transferred with the wellhead automatic platform.

[0024] According to a preferred embodiment of the present application, as shown in Figure 6 The step device 10 comprises a horizontal telescopic oil cylinder 10-1, a step sliding shoe 10-2 and a pressure sensor, the horizontal telescopic oil cylinder 10-1 is horizontally connected to the bottom of the step leg 9, the step sliding shoe is horizontally connected to the horizontal telescopic oil cylinder, the bottom surface of the step sliding shoe is provided with anti-skid tooth patterns, and the cushion block 10-3 is arranged on the ground, and the surface of the cushion block is provided with a positioning groove matched with the step sliding shoe.

[0025] In the above technical solution, one end of the horizontal telescopic oil cylinder 10-1 of the step device 10 is fixed horizontally at the bottom of the step leg 9, and the other end is rigidly connected with the step sliding shoe 10-2. When it is necessary to adjust the position of the main block 8, the central control system sends instructions to the horizontal telescopic oil cylinder 10-1, and the oil cylinder piston rod is extended or retracted to drive the step sliding shoe 10-2 to move in the horizontal direction. The anti-skid tooth patterns on the bottom surface of the step sliding shoe 10-2 increase the friction with the ground or the cushion block to prevent slipping during movement. The cushion block 10-3 is placed in advance at the preset position on the ground, and the size of the positioning groove on the surface of the cushion block matches the bottom of the step sliding shoe 10-2. When the step sliding shoe 10-2 moves above the cushion block 10-3, it can be embedded in the positioning groove to form mechanical limiting and enhance the support stability. The pressure sensor is installed at the connection position of the horizontal telescopic oil cylinder 10-1 and the step sliding shoe 10-2, which can monitor the pressure value of the step sliding shoe 10-2 on the ground in real time and feed back the signal to the central control system. The system automatically adjusts the extension amount of the corresponding horizontal telescopic oil cylinder 10-1 by comparing the pressure data of the four step devices 10 to ensure that the support pressure of the four step legs 9 is uniform, thereby avoiding the inclination of the equipment due to uneven force. When it is necessary to rotate and adjust, the step device 10 rotates around the axis of the step leg 9, the horizontal telescopic oil cylinder 10-1 rotates synchronously, the step sliding shoe 10-2 changes the moving direction, and the multi-directional movement adjustment of the main block 8 is realized.

[0026] According to a preferred embodiment of the present invention, the upright self-balancing derrick 2 adopts an upright telescopic structure.

[0027] In the above technical solution, the upright, modular telescopic structure effectively reduces the space occupied by the derrick during transportation. The telescopic structure design improves the adaptability and flexibility of the derrick, reduces the workload of on-site assembly and disassembly, and improves operational efficiency.

[0028] According to a preferred embodiment of the invention, it also includes a ground pipe laying machine that transports the pipe string 12 from the ground to a hydraulic pipe delivery machine.

[0029] In the above technical solution, the ground-based pipe laying machine is responsible for transporting the pipe string 12 from the ground to the hydraulic pipe delivery machine, which then lifts the pipe string to a vertical position and connects it with the traveling carriage. This collaborative design reduces intermediate steps in the pipe string transportation process, improving the continuity and efficiency of the operation.

[0030] On the other hand, a preferred embodiment of the present invention also provides a method for operating the aforementioned vertical derrick electrically driven automated well workover equipment, comprising the following steps: S1, Main vehicle step adjustment like Figure 1 As shown, by controlling the extension and retraction of the stepping outrigger 9 and the rotation of the stepping device 10, the self-propelled chassis 1 is precisely moved to the wellhead position, and the traveling carriage guide rail is pushed to complete the alignment of the derrick and the wellbore; By controlling the extension, retraction, and rotation of the stepping outriggers 9 and the stepping device 10, the main trolley can be precisely moved to the wellhead position and align the derrick with the wellbore. Automated adjustment reduces human error and improves operational efficiency and safety.

[0031] S2, Derrick Lifting like Figures 2-3 As shown, the hoisting mechanism is used to control the rotation of the derrick until the derrick is set vertically. During this process, the self-balancing crane is deployed synchronously and the working state is locked by rotating the shaft. The hoisting mechanism controls the rotation of the derrick to a vertical position, while the self-balancing crane 11 simultaneously deploys and locks into working condition. The design of the self-balancing crane 11 ensures the stability of the derrick during the hoisting process, reducing deviations caused by wind loads or improper operation.

[0032] S3, Lowering the tubing column like Figures 4-5As shown, the ground pipe rack machine delivers the horizontal pipe column 12 to the pipe delivery machine clamp hand 7, and after being lifted to the vertical state, it is connected with the traveling block clamp; the traveling block moves downward along the traveling block guide rail 3 to lower the pipe column 12 to the well mouth, the centralizing mechanical hand 5-2 automatically corrects the posture, the hydraulic clamp 5-1 completes the make and break operation, and the threaded connection between the new pipe column and the old pipe column is completed; the centralizing mechanical hand 5-2 corrects the perpendicularity of the pipe column in the lifting process; the cooperative work of the automatic equipment reduces manual intervention and improves the operation efficiency and accuracy.

[0033] S4, finishing stage After the operation is completed, the traveling block is reset to a safe position, the derrick is stably laid down to a transportation state, and the step legs are recovered.

[0034] After the operation is completed, the traveling block is reset to a safe position, the derrick is stably laid down to a transportation state, and the step legs are recovered.

[0035] The above operation method realizes step-by-step automatic control, closely connects each link of the workover operation, reduces manual operation steps, and reduces the influence of human error on the operation quality. The accurate control of the main car step adjustment ensures the accurate centering of the derrick, and lays a foundation for subsequent operations; the stable control of the derrick lifting is synchronized with the locking of the crown block, which improves the safety and stability of the derrick erection. The cooperation of each automatic component during the pipe column lowering process improves the pipe column connection accuracy and efficiency, and reduces the risk of thread damage; the orderly operation in the finishing stage ensures the safe recovery of the equipment to the transportation state, and reduces the preparation time for the transfer. The overall method significantly improves the efficiency and safety of the workover operation, shortens the operation cycle, and provides a standardized operation process for the automatic workover.

[0036] Although the embodiments of the present application have been disclosed as above, they are not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.​

Claims

1. A vertical derrick electric drive automated workover rig, characterized in that, The self-propelled chassis, the vertical self-balancing derrick, the traveling block guide rail, the traveling block, the wellhead automation platform and the hydraulic pipe feeding machine are included. The self-propelled chassis is installed at the bottom of the main vehicle, and is provided with a plurality of step legs, each of which is provided with a step device below, the step device being horizontally telescopic and rotatable around the axis of the step leg, thereby realizing the multi-directional movement adjustment of the main vehicle with the vertical self-balancing derrick; the step device comprises a horizontal telescopic oil cylinder, a step sliding shoe and a pressure sensor, the horizontal telescopic oil cylinder being horizontally connected to the bottom of the step leg, and the step sliding shoe being horizontally connected to the horizontal telescopic oil cylinder; the pressure sensor is installed at the connection part of the horizontal telescopic oil cylinder and the step sliding shoe. The vertical self-balancing derrick is hinged to the main vehicle at the bottom and is provided with a balanced beam type headstock at the top. The traveling block guide rail is arranged along the front side of the vertical self-balancing derrick, and the traveling block moves up and down along the traveling block guide rail to prevent wind load deviation. The wellhead automation platform is installed at the tail of the main vehicle, and is integrated with a hydraulic clamp and a centralizing manipulator, the hydraulic clamp being used for clamping the top end of the pipe string, and the centralizing manipulator being used for centralizing the body of the pipe string. The hydraulic pipe feeding machine is installed on the ground, and adopts a horizontal-to-vertical bidirectional lifting mechanism to realize the horizontal-to-vertical posture conversion of the pipe string and the transfer of the pipe string between the wellhead automation platform.

2. The electrically driven automated workover rig of claim 1, wherein, The vertical self-balancing derrick adopts a vertical and telescopic structure.

3. The electrically driven automated workover rig of claim 1, wherein, The balanced beam type headstock at the top of the vertical self-balancing derrick comprises two groups of pulley blocks, which are respectively connected to the dead rope fixer and the electric winch on the traveling block and the main vehicle.

4. The electrically driven automated workover rig of claim 1, wherein, The ground pipe conveying machine is further included, which conveys the pipe string from the ground to the hydraulic pipe feeding machine.

5. The method of claim 1-4, wherein the method is characterized in that, The method comprises the following steps: S1, main vehicle step adjustment The self-propelled chassis is accurately moved to the wellhead position by controlling the extension and retraction of the step leg and the rotation of the step device, and the wellhead and the wellbore are centered. S2, wellhead lifting The wellhead is rotated by using the lifting mechanism until the wellhead is vertically arranged, and in this process, the self-balancing headstock is synchronously unfolded, and the rotation shaft is locked in the working state. S3, pipe string lowering The ground pipe conveying machine conveys the horizontal pipe string to the pipe feeding machine clamp, lifts it to the vertical state, and then transfers it to the traveling block hanger; the traveling block moves downward along the traveling block guide rail to lower the pipe string to the wellhead, the centralizing manipulator automatically corrects the posture, the hydraulic clamp completes the make-up and break-out operation, and the threaded connection between the new pipe string and the old pipe string is completed. The centralizing manipulator corrects the perpendicularity of the pipe string in real time during the lifting process. S4, finishing stage After the operation is completed, the traveling block is reset to a safe position, and the wellhead is stably laid down to the transportation state. The step leg is retracted.

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