Pull rod type automatic workover rig

Abstract

The invention discloses a pull rod type automatic workover rig and belongs to the field of oil field workover operation equipment. Comprising a lifting mechanism, a chassis mechanism, a hydraulic mechanism and a pipe conveying mechanism, the lifting mechanism is arranged at the end of the chassis mechanism, the pipe conveying mechanism is arranged above the chassis mechanism, and the pipe conveying mechanism and the lifting mechanism are matched with the chassis mechanism under power transmission of the hydraulic mechanism to complete well repairing work. Modular design is adopted, the overall space is small, transportation is convenient, the occupied area is small in the working state, the total lifting height is low, safety and stability are achieved, a winch is not needed when the workover pipe ascends and descends, and the problems that existing equipment is low in working efficiency, poor in overall stability in the working state, high in lifting height gravity center and high in personnel labor intensity are solved. In the whole working process, shaking and vibration are avoided, and the stability and safety of operation are improved.

Description

Technical Field

[0001] The invention relates to a pull rod type automatic well repairing machine, in particular to well repairing equipment which can automatically lift and lower a well repairing pipe through modular design, and belongs to the field of oilfield well repairing operation equipment. Background Art

[0002] In the field of oil production, well repair operations are the key to ensuring the continuous and stable production of oil wells. Traditional well repair rigs mainly include crawler-type and vehicle-mounted types. However, these well repair rigs have many disadvantages.

[0003] Existing workover rigs often require a lot of manual work during operation. From lifting, disassembling to installing the pipe string, each step relies on manual operation by workers, which is not only labor-intensive, but also prone to human errors, resulting in low operating efficiency. In addition, the equipment structure of traditional workover rigs is relatively complex. In the limited space of the well site, the installation, commissioning and maintenance of the equipment are difficult, which consumes a lot of time and manpower costs. In addition, the conventional workover rigs have a low degree of automation and are difficult to adapt to the needs of modern and efficient oil production operations, and cannot meet the requirements of quickly and accurately completing workover tasks under complex working conditions. Summary of the invention

[0004] In view of the above-mentioned shortcomings, the present invention provides a pull rod type automatic workover machine.

[0005] The present invention is realized through the following technical scheme: a pull rod type automatic well repairing machine, comprising a lifting and lowering mechanism, a chassis mechanism, a hydraulic mechanism, and a pipe delivery mechanism, wherein the lifting and lowering mechanism is arranged at the end of the chassis mechanism, and the pipe delivery mechanism is arranged above the chassis mechanism, and the pipe delivery mechanism and the lifting and lowering mechanism cooperate with the chassis mechanism under the power transmission of the hydraulic mechanism to complete the well repairing work.

[0006] The lifting and lowering mechanism comprises a wire rope, an upper and lower telescopic tube, a fixed tube, an upper and lower breakaway oilfield workover tongs, a landing gear support assembly, a guide shaft, a guide tube, an elevator, a wire rope guide wheel, a support rib plate, a hinged support plate, and a telescopic component. The support rib plate is arranged at one end of the chassis mechanism, and the support rib plate is connected to the fixed tube through the hinged support plate. The fixed tube is equipped with an upper and lower telescopic tube, one end of the telescopic component is arranged at the fixed tube, and the other end is arranged at the upper and lower telescopic tubes. A wire rope guide wheel is arranged at the top of the upper and lower telescopic tubes, and a wire rope is arranged in the wire rope guide wheel. One end of the wire rope is fixed and the other end is connected to the elevator. A guide tube is fixed at the elevator, and the guide tube can make axial movement along the upper and lower telescopic tubes. The guide tube is equipped with a guide shaft, and the guide shaft is fixed to the fixed tube. The fixed tube is connected to the chassis mechanism through the landing gear support assembly. The bottom end of the fixed tube is equipped with an upper and lower breakaway oilfield workover tongs, and the upper and lower breakaway oilfield workover tongs are finished standard parts.

[0007] The lifting and lowering mechanism is also provided with a back range-extending component, which is connected to a fixing pipe, and an ejecting end of the back range-extending component is fixedly connected to one end of a steel wire rope.

[0008] The telescopic component is arranged in the tube cavity of the fixed tube and the upper and lower telescopic tubes. The upper and lower telescopic tubes and the fixed tube are preferably square tubes. The elevator is a hydraulic elevator, and the back range-extending component is preferably a hydraulic cylinder.

[0009] The chassis mechanism comprises a chassis frame and supporting legs, and the supporting legs are arranged on the outer periphery of the chassis frame.

[0010] The legs are preferably hydraulic legs.

[0011] The pipe delivery mechanism includes a boom base, a pipe clamping manipulator, a feeding rack, a pipe delivery lifting arm, a lifting and telescopic cylinder, a rotating shaft, a base support plate, a base motion motor, and an arm lifting motor. A base support plate is provided at one end of the boom base, and the base support plate is connected to the pipe delivery lifting arm through a rotating shaft. A lifting and telescopic cylinder is provided at the bottom end of the pipe delivery lifting arm, and an arm lifting motor is connected to the lower end of the lifting and telescopic cylinder. The arm lifting motor can be displaced by a rack provided at the bottom of the boom base. A base motion motor is provided at the other end of the boom base, and the base motion motor can drive the boom base to move along the chassis frame. A pipe clamping manipulator and a feeding rack are provided on the surface of the pipe delivery lifting arm.

[0012] The arm lifting motor is a servo reduction motor.

[0013] Rollers are distributed on the feeding rack, there are three pipe clamping manipulators, and a feeding rack is arranged between every two pipe clamping manipulators.

[0014] The benefit of this invention is that it adopts a modular design, with a small overall space for easy transportation, a small footprint in the working state, a low total lifting height, and is safe and stable. The invention does not require a winch to lift and lower the well repair pipe, which solves the problems of low working efficiency of existing equipment and poor overall stability of the equipment in the working state. The landing mechanism can effectively reduce the total height of the landing gear through the cooperation of the upper and lower telescopic tubes, fixed tubes, telescopic components and back range extension components, further enhance the compactness of the structure, and lower the center of gravity of the equipment. The present invention has no shaking or vibration during the entire working process, thereby improving the stability and safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 3It is a structural schematic diagram of the lifting and lowering mechanism of the present invention;

[0018] Figure 4 It is a left side view of the lifting and lowering mechanism of the present invention;

[0019] Figure 5 It is an axonometric view of the pipe delivery mechanism of the present invention;

[0020] Figure 6 For the present invention Figure 5 The main view of

[0021] Figure 7 This is a structural schematic diagram of the make-up and break-out oilfield workover tongs of the present invention, which is a finished standard part.

[0022] In the figure, 1. lifting and lowering mechanism, 101. wire rope, 102. upper and lower telescopic tubes, 103. fixed tube; 104. upper and lower oilfield workover tongs, 105. landing gear support assembly, 106. guide shaft, 107. guide tube, 108. elevator, 109. wire rope guide wheel, 110. support rib, 111. hinged support plate, 112. telescopic component, 113. back range extension component, 2. chassis mechanism, 201. outrigger, 202. chassis frame; 3. hydraulic mechanism, 301. hydraulic system, 302. hydraulic motor pump group; 4. pipe delivery mechanism, 401. boom base, 402. pipe clamping manipulator, 403. feeding rack, 404. pipe delivery lifting arm, 405. lifting telescopic cylinder, 406. rotating shaft, 407. base support plate, 408. base motion motor, 409. arm lifting motor. DETAILED DESCRIPTION

[0023] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0025] For the convenience of description, if the words "up", "down", "left" and "right" appear in this application, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0026] Terminology explanation section: The terms "install", "connect", "connect", "fixed" and the like in this application should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] A pull rod type automatic well repairing machine comprises a lifting and lowering mechanism 1, a chassis mechanism 2, a hydraulic mechanism 3, and a pipe delivery mechanism 4. The lifting and lowering mechanism 1 is arranged at the end of the chassis mechanism 2, and the pipe delivery mechanism 4 is arranged above the chassis mechanism 2. The pipe delivery mechanism 4 and the lifting and lowering mechanism 1 cooperate with the chassis mechanism 2 to complete the well repairing work under the power transmission of the hydraulic mechanism 3.

[0028] The landing mechanism 1 includes a wire rope 101, upper and lower telescopic tubes 102, a fixed tube 103, an upper and lower oilfield workover tongs 104, a landing gear support assembly 105, a guide shaft 106, a guide tube 107, an elevator 108, a wire rope guide wheel 109, a support rib plate 110, a hinged support plate 111, and a telescopic component 112. The support rib plate 110 is arranged at one end of the chassis mechanism 2, and the support rib plate 110 is connected to the fixed tube 103 through the hinged support plate 111. The fixed tube 103 is equipped with the upper and lower telescopic tubes 102. One end of the telescopic component 112 is arranged at the fixed tube 103, and the other end is arranged at the upper and lower telescopic tubes 102. A wire rope guide wheel 109 is provided at the top of the upper and lower telescopic tubes 102, and a wire rope 101 is provided in the wire rope guide wheel 109. One end of the wire rope 101 is fixed, and the other end is connected to a hanging card 108. A guide tube 107 is fixed at the hanging card 108. The guide tube 107 can move axially along the upper and lower telescopic tubes. The guide tube 107 is matched with a guide shaft 106, and the guide shaft 106 is fixed to the fixed tube 103. The fixed tube 103 is connected to the chassis mechanism 2 through the landing gear support assembly 105. The bottom end of the fixed tube 103 is provided with an upper and lower breakout oilfield workover tongs 104, and the upper and lower breakout oilfield workover tongs 104 are finished standard parts.

[0029] The lifting mechanism 1 is also provided with a back range-extending component 113, which is connected to the fixed tube 103, and the ejection end of the back range-extending component 113 is fixedly connected to one end of the wire rope 101. The provision of the back range-extending component 113 can further increase the travel of the elevator 108, adapt to complex working conditions, and can effectively lower the center of gravity of the equipment and increase the stability of the equipment.

[0030] The telescopic component 112 is arranged in the tube cavity of the fixed tube 103 and the upper and lower telescopic tubes 102. The upper and lower telescopic tubes 102 and the fixed tube are preferably square tubes 103. The elevator is a hydraulic elevator 108, and the back range extender component 113 is preferably a hydraulic cylinder.

[0031] The chassis mechanism 2 includes a chassis frame 202 and a support leg 201 . The support leg 201 is disposed on the outer periphery of the chassis frame 202 .

[0032] The support legs 201 are preferably hydraulic support legs.

[0033] The pipe delivery mechanism 4 includes a boom base 401, a pipe clamping manipulator 402, a feeding rack 403, a pipe delivery lifting arm 404, a lifting telescopic cylinder 405, a rotating shaft 406, a base support plate 407, a base motion motor 408, and an arm lifting motor 409. A base support plate 407 is provided at one end of the boom base 401, and the base support plate 407 is connected to the pipe delivery lifting arm 404 through the rotating shaft 406. The bottom end of the pipe delivery lifting arm 404 is provided with a lifting A lifting and telescopic cylinder 405, the lower end of which is connected to an arm lifting motor 409, which can be displaced by a rack arranged at the bottom of the boom base 401, and a base movement motor 408 is arranged at the other end of the boom base 401, which can drive the boom base 401 to move along the chassis frame 202, and a pipe clamping manipulator 402 and a feeding rack 403 are arranged on the surface of the pipe feeding lifting arm 404.

[0034] The arm lifting motor 409 is a servo reduction motor.

[0035] Rollers are distributed on the feeding rack 403 , there are three tube clamping manipulators 402 , and a feeding rack 403 is arranged between every two tube clamping manipulators 402 .

[0036] The boom base 401 is provided with a hydraulic motor pump group 302 and a hydraulic system 301 .

[0037] Working principle: When the device is working, the support legs 201 of the chassis mechanism 2 are first erected to the target position, the hydraulic mechanism 3 provides power output through the cooperation of the hydraulic motor pump group 302 and the hydraulic system 301, and the landing mechanism 1 provides power through the landing gear support assembly 105, so as to rotate around the support rib 110 until it is erected, and the well repair pipe in the material warehouse is placed on the feeding rack 403 through the cooperation of the pipe clamping manipulator 402, and the pipe feeding lifting arm 404 is lifted around the rotating shaft 406 under the support of the base support plate 407 through the contraction of the lifting telescopic cylinder 405. After lifting to a certain angle, the pipe feeding lifting arm 404 is further moved to a vertical state through the cooperation of the arm lifting motor 409, and then the large arm base 401 is moved forward through the gear rack meshing action of the base motion motor 408. Move one step until the workover pipe moves under the elevator 108. After the elevator 108 holds the workover pipe, the pipe clamping manipulator 402 is released, and the pipe delivery lifting arm 404 falls back to a horizontal state under the cooperation of the base motion motor 408, the arm lifting motor 409, and the lifting telescopic cylinder 405; the upper and lower telescopic pipes 102 are retracted along the fixed pipe 103 under the contraction traction of the telescopic component 112, and the wire rope 101 pulls the elevator 108 to descend under the cooperation of the guide pipe 107 and the guide shaft 106. If the telescopic component 112 still cannot reach the expected descending height after the stroke is exhausted, the back extension component 113 is further contracted to make the wire rope 101 continue to gradually descend to the target position, and then the oilfield workover tongs 104 are put on and unloaded to clamp the workover pipe for workover work, and the workover work is completed at one time.

[0038] For those skilled in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the protection scope of the present invention.

Claims

1. A pull rod type automatic well repairing machine, comprising a lifting and lowering mechanism, a chassis mechanism, a hydraulic mechanism, and a pipe delivery mechanism, wherein the lifting and lowering mechanism is arranged at the end of the chassis mechanism, the pipe delivery mechanism is arranged above the chassis mechanism, and the pipe delivery mechanism and the lifting and lowering mechanism cooperate with the chassis mechanism to complete the well repairing work under the power transmission of the hydraulic mechanism.

2. A pull rod type automatic well repair machine as described in claim 1, wherein the lifting and lowering mechanism comprises a wire rope, an upper and lower telescopic tube, a fixed tube, an upper and lower shackle oilfield well repair tongs, a landing gear support assembly, a guide shaft, a guide tube, an elevator, a wire rope guide wheel, a support rib plate, a hinged support plate, and a telescopic component, wherein the support rib plate is arranged at one end of the chassis mechanism, the support rib plate is connected to the fixed tube through the hinged support plate, the fixed tube is equipped with an upper and lower telescopic tube, one end of the telescopic component is arranged at the fixed tube, and the other end is arranged at the upper and lower At the telescopic tube, a wire rope guide wheel is arranged at the top of the upper and lower telescopic tubes, a wire rope is arranged in the wire rope guide wheel, one end of the wire rope is fixed, and the other end is connected to a hanging card, a guide tube is fixed at the hanging card, the guide tube can make axial movement along the upper and lower telescopic tubes, the guide tube is matched with a guide shaft, and the guide shaft is fixed at the fixed tube, the fixed tube is connected to the chassis mechanism through the landing gear support assembly, and the bottom end of the fixed tube is provided with an upper and lower breakaway oilfield workover tongs, and the upper and lower breakaway oilfield workover tongs are finished standard parts.

3. A pull-rod type automatic well repair machine as described in claim 2, wherein the lifting and lowering mechanism is also provided with a back range-extending component, the back range-extending component is connected to a fixed pipe, and the ejection end of the back range-extending component is fixedly connected to one end of a steel wire rope.

4. A pull rod type automatic well repair machine as described in claim 3, wherein the telescopic component is arranged in the tube cavity of the fixed tube and the upper and lower telescopic tubes, the upper and lower telescopic tubes and the fixed tube are preferably square tubes, the elevator is a hydraulic elevator, and the back range extension component is preferably a hydraulic cylinder.

5. The pull-rod type automatic well repairing machine according to claim 3, wherein the chassis mechanism comprises a chassis frame and legs, and the legs are arranged on the periphery of the chassis frame.

6. The pull-rod type automatic well repairing machine as claimed in claim 3, wherein the support legs are preferably hydraulic support legs.

7. A pull-rod type automatic well repair machine as described in claim 1, wherein the pipe delivery mechanism includes a boom base, a pipe clamping manipulator, a feeding rack, a pipe delivery lifting arm, a lifting telescopic rod, a rotating shaft, a base support plate, a base movement motor, and an arm lifting motor. A base support plate is provided at one end of the boom base, and the base support plate is connected to the pipe delivery lifting arm through a rotating shaft. The bottom end of the pipe delivery lifting arm is provided with a lifting telescopic rod, and the lower end of the lifting telescopic rod is connected to the arm lifting motor. The arm lifting motor can be displaced by a rack provided at the bottom of the boom base, and a base movement motor is provided at the other end of the boom base. The base movement motor can drive the boom base to move along the chassis frame, and a pipe clamping manipulator and a feeding rack are provided on the surface of the pipe delivery lifting arm.

8. The pull rod type automatic well repairing machine according to claim 7, wherein the arm lifting motor is a servo reduction motor.

9. A pull rod type automatic well repairing machine as claimed in claim 7, wherein rollers are distributed on the feed rack, there are three pipe clamping manipulators, and a feed rack is arranged between every two pipe clamping manipulators.

10. The pull rod type automatic well repairing machine according to claim 7, wherein a hydraulic motor pump group and a hydraulic system are arranged on the boom base.

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