A kind of oil suction casing pulling out and recycling with connecting rod tool

Abstract

The application provides an oil suction casing pulling and recovering joint rod tool, which comprises a rack with a lifting layered structure and a through hole for the casing to pass through; a fixed clamping member arranged on the rack and used for clamping and fixing the rod part of the multi-rib drill rod; and a rotary hydraulic chuck assembly located directly above the fixed clamping member and used for screwing the clamped multi-rib drill rod to complete the joint rod action. The fixed clamping member and the rotary clamping member are integrated, the joint rod operation of the multi-rib drill rod can be easily realized, the subsequent pulling and recovering operation of the oil suction casing is facilitated, the joint rod process is safe and reliable, the operator saves time and effort, and the operation efficiency of the continuous drill rod is effectively improved.

Description

Technical Field

[0001] This application belongs to the field of oil suction casing retrieval and recovery technology, and particularly relates to a connecting rod tooling for oil suction casing retrieval and recovery. Background Technology

[0002] The treatment of suction casing in abandoned oil wells is a crucial step in well sealing operations. Currently, the most environmentally friendly method for treating suction casing in abandoned oil wells is retrieval and recovery. This involves using equipment to pull the suction casing out of the wellhead section by section, then cutting and recovering it. This method can completely remove potential sources of contamination (residual oil, scale, and deposits on the pipe wall) and metal pipes that may corrode and leak in the future, providing a clearer and more reliable wellbore for subsequent sealing operations such as running bridge plugs and injecting cement plugs.

[0003] The first step in dealing with the suction casing in abandoned oil wells is to drive the multi-faceted drill pipe into the abandoned oil well. Since the suction casing in abandoned oil wells is often two to three hundred meters deep, after driving the multi-faceted drill pipe into the abandoned oil well, a new drill pipe needs to be connected to the end of the drill pipe, and then the new drill pipe needs to be driven into the abandoned oil well. This process is repeated until the drill pipe is completely inserted into the suction casing.

[0004] Currently, the splicing of drill pipes in the aforementioned process requires manual operation. Due to the significant weight of the drill pipe, a clamping device is used to hold the splicing drill pipe vertically, and then the threaded end of the splicing drill pipe is manually screwed into the threaded end of the multi-faceted drill pipe to complete the splicing. During this process, the operator must overcome the rotational resistance inherent in the clamping device, and the operator's applicable output force is limited. This results in low efficiency in splicing drill pipes and poses certain safety risks to the operator. Utility Model Content

[0005] In view of this, the present application aims to provide a tooling for retrieving and recovering an oil suction casing to solve at least one of the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0007] This application provides a tooling for retrieving and recovering an oil suction casing, comprising:

[0008] The frame has a lifting and layering structure, and the frame is provided with through holes for the sleeve to pass through;

[0009] A fixed clamping member is disposed on the frame and is used to clamp and fix the rod portion of the multi-faceted drill rod.

[0010] A rotating clamping member is located directly above the fixed clamping member. The rotating clamping member is used to screw the clamped polygonal drill rod to complete the rod connection action.

[0011] Furthermore, the frame includes a chassis, a first platform, and a second platform. The first platform is mounted on the chassis via a first lifting cylinder, and the second platform is mounted on the first platform via a second lifting cylinder. The through hole is located at the center of the chassis, the first platform, and the second platform.

[0012] Furthermore, the fixing and clamping component is assembled from a first mounting base plate, a first rotary cylinder, a first pull tube, a first spindle, and a first clamp.

[0013] The first mounting base plate is disposed on the chassis, and a first through hole corresponding to the through hole is provided at the center of the first mounting base plate.

[0014] The first rotary cylinder is mounted on the first mounting base plate, one end of the first pull tube is mounted on the piston rod of the first rotary cylinder, and the other end of the first pull tube is connected to the movable end of the first clamp.

[0015] The first spindle is sleeved on the first pull tube, and the small flange end of the first spindle is fixed to the rod end face of the first rotary cylinder, while its large flange end is connected to the fixed end of the first clamp.

[0016] Furthermore, the first clamp adopts a hydraulic chuck structure, with the wedge-shaped sleeve of the first hydraulic chuck connected to the top end of the first pull tube, controlling the first pull tube to perform push-pull actions to drive the jaws on the first hydraulic chuck to open and retract.

[0017] Furthermore, the rotating clamping component is assembled from a second mounting base plate, a second rotary cylinder, a second pull tube, a second main shaft, a second clamp, a steering mechanism, and a mounting support.

[0018] The second mounting base plate is mounted on the first layer platform through multiple flexible connectors, and a second through hole corresponding to the first through hole is opened at the center of the second mounting base plate.

[0019] The second rotary cylinder is mounted on the second mounting base plate, the second pull tube is inserted into the second spindle, and one end of the second pull tube is mounted on the piston rod of the second rotary cylinder, while the other end of the second pull tube is connected to the movable end of the second clamp.

[0020] The small flange end of the second spindle is fixed to the rod end face of the second rotary cylinder, and the large flange end of the second spindle is connected to the fixed end of the second clamp.

[0021] The mounting bracket is fixed to the second mounting base plate, the steering mechanism is fixed to the upper end face of the mounting bracket, and the steering mechanism is connected to the second main shaft.

[0022] Furthermore, the second clamp adopts a hydraulic chuck structure, with the wedge-shaped sleeve of the second hydraulic chuck connected to the top end of the second pull tube, controlling the second pull tube to perform push-pull actions to drive the jaws on the second hydraulic chuck to open and retract.

[0023] Furthermore, the steering mechanism includes a first hydraulic motor, a reduction mechanism, and a first output gear. The first hydraulic motor is fixedly connected to the input end of the reduction mechanism, the output shaft of the first hydraulic motor is correspondingly connected to the input shaft hole of the reduction mechanism, the first output gear is disposed at the output shaft end of the reduction mechanism, and the first output gear meshes with an external gear disposed on the outer side of the second main shaft.

[0024] Furthermore, the flexible connector is an elastic foot.

[0025] Compared with the prior art, the oil suction casing retrieval and recovery rod tooling described in this application has the following advantages:

[0026] The tooling described in this application integrates a fixed clamping component and a rotating clamping component, which can easily realize the connection operation of multi-faceted drill pipe, so as to facilitate the subsequent retrieval and recovery operation of the suction casing. The connection process is safe and reliable, and saves time and effort for operators, effectively improving the operating efficiency of continuous drill pipe. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a cross-sectional view of a tooling for retrieving and recovering an oil suction casing, as described in an embodiment of this application.

[0029] Figure 2 This is a cross-sectional view of the fixing and clamping component described in the embodiment of this application;

[0030] Figure 3 This is a cross-sectional view of the rotating clamping component described in the embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the multi-faceted drill pipe structure described in an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Chassis; 2-First platform; 3-Second platform; 4-First lifting cylinder; 5-Second lifting cylinder; 6-Fixed clamping component; 61-First mounting base plate; 62-First rotary cylinder; 63-First pull tube; 64-First spindle; 65-First clamp; 7-Rotating clamping component; 71-Second mounting base plate; 72-Second rotary cylinder; 73-Second pull tube; 74-Second spindle; 75-Second clamp; 76-Steering mechanism; 761-First hydraulic motor; 762-Reduction mechanism; 763-First output gear; 77-Mounting support; 78-Elastic foot; 8-Multi-faceted drill rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0035] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can refer to any connection.

[0036] This includes electrical connections, whether direct or indirect. Terms like "up," "down," "left," and "right" are used only to indicate relative positional relationships; these relative relationships may change if the absolute position of the object being described changes.

[0037] Please see Figure 1 and Figure 2 As shown, this embodiment provides a tooling for retrieving and recovering an oil suction casing, including:

[0038] The frame has a lifting and layering structure, and the frame is provided with through holes for the sleeve to pass through;

[0039] The fixing clamping member 6 is disposed on the frame and is used to clamp the multi-faceted drill rod (the multi-faceted drill rod used in this embodiment is such as...). Figure 4 The rod is clamped and fixed as shown.

[0040] A rotating clamping member 7 is located directly above the fixed clamping member 6. The rotating clamping member 7 is used to screw the clamped polygonal drill rod to complete the rod connection action.

[0041] The device adopts a series platform structure, integrating the fixed clamping component 6 and the rotating clamping component 7 into one unit. It can easily realize the connection operation of multi-faceted drill pipe, so as to facilitate the subsequent retrieval and recovery of the suction casing. The connection process is safe and reliable, and saves time and effort for operators, effectively improving the operating efficiency of continuous drill pipe.

[0042] In some embodiments, the frame includes a chassis 1, a first platform 2, and a second platform 3. The first platform 2 is mounted on the chassis 1 by a first lifting cylinder 4, and the second platform 3 is mounted on the first platform 2 by a second lifting cylinder 5. A through hole is located at the center of the chassis 1, the first platform 2, and the second platform 3.

[0043] Specifically, in this embodiment, there are six first lifting cylinders 411 and six second lifting cylinders 512, which are evenly distributed along the axis. The rod end flange of the first lifting cylinder 411 is fixed to the top surface of the chassis 11 by screws, the cylinder head of the first lifting cylinder 411 is fixed to the top surface of the first platform 22 by screws, the piston rod of the second lifting cylinder 512 passes through the cylinder mounting hole on the first platform 22, and the bottom of the second lifting cylinder 512 is fixed to the bottom surface of the second platform 33 by screws.

[0044] When the piston rod of the lifting cylinder extends, it pushes the cylinder body of the lifting cylinder upward, and drives the first platform 22 and the second platform 33 to rise synchronously; when the piston rod of the lifting cylinder retracts, it drives the cylinder body of the lifting cylinder to descend, and drives the first platform 22 and the second platform 33 to descend synchronously; the displacement sensor built into the lifting cylinder can provide feedback on the movement information of the piston rod and determine the height of each platform.

[0045] In some embodiments, the fixing clamping component 6 is assembled from a first mounting base plate 61, a first rotary cylinder 62, a first pull tube 63, a first spindle 64, and a first clamp 65 (in order to improve on-site operability and stability, the first clamp 65 in this embodiment adopts a hydraulic chuck structure).

[0046] The first mounting base plate 61 is mounted on the chassis 1, and a first through hole corresponding to the through hole is provided at the center of the first mounting base plate 61.

[0047] The first rotary cylinder 62 is mounted on the first mounting base plate 61, one end of the first pull tube 63 is mounted on the piston rod of the first rotary cylinder 62, and the other end of the first pull tube 63 is connected to the wedge sleeve of the first hydraulic chuck.

[0048] The first spindle 64 is sleeved on the first pull tube 63, and the small flange end of the first spindle 64 is fixed to the rod end face of the first rotary cylinder 62. Its large flange end is connected to the bottom surface of the first hydraulic chuck, controlling the first pull tube 63 to perform push-pull actions to drive the jaws on the first hydraulic chuck to open and retract.

[0049] Specifically, in this embodiment, such as Figure 2 As shown, the first mounting base plate 61 of the fixed clamping component 6 is fixed to the center position of the chassis 1 by screws. The first rotary cylinder 62 is fixed to the center of the top surface of the first mounting base plate 61 by screws. The first pull tube 63 is inserted into the first spindle 64. The first pull tube 63 is fixed to the piston rod of the first rotary cylinder 62 by threads. The other end of the first pull tube 63 is fixed to the wedge sleeve of the first hydraulic chuck by threads. The small flange end of the first spindle 64 is fixed to the rod end face of the first rotary cylinder 62 by screws. The large flange end of the first spindle 64 is fixed to the hydraulic bottom surface of the first chuck by screws. The extension and retraction of the piston rod of the first rotary cylinder 62 is driven by the extension and retraction of the piston rod. The three jaws on the first chuck 44 can be driven to open and retract by the push and pull of the first pull tube 63.

[0050] In some embodiments, the rotating clamping member 7 is composed of a second mounting base plate 71, a second rotary cylinder 72, a second pull tube 73, a second spindle 74, a second clamp 75 (similar to the first clamp 65, the second clamp 75 in this embodiment also adopts a hydraulic chuck structure), a steering mechanism 76, and a mounting support assembly 77.

[0051] The second mounting base plate 71 is mounted on the first platform 2 by multiple elastic feet 78, and a second through hole corresponding to the first through hole is opened at the center of the second mounting base plate 71.

[0052] The second rotary cylinder 72 is mounted on the second mounting base plate 71. The second pull tube 73 is inserted into the second spindle 74. One end of the second pull tube 73 is mounted on the piston rod of the second rotary cylinder 72, and the other end of the second pull tube is connected to the wedge sleeve of the second hydraulic chuck. The second pull tube 73 is controlled to perform push-pull action to drive the jaws on the second hydraulic chuck to open and retract.

[0053] The small flange end of the second main shaft 74 is fixed to the rod end face of the second rotary cylinder 72, and the large flange end of the second main shaft 74 is connected to the bottom surface of the second hydraulic chuck.

[0054] The mounting bracket is fixed on the second mounting base plate 71, the steering mechanism 76 is fixed on the upper end face of the mounting bracket, and the steering mechanism 76 is connected to the second main shaft 74.

[0055] The steering mechanism 76 includes a first hydraulic motor 761, a reduction mechanism 762, and a first output gear 763. The first hydraulic motor 761 is fixedly connected to the input end of the reduction mechanism 762. The output shaft of the first hydraulic motor 761 is correspondingly connected to the input shaft hole of the reduction mechanism 762. The first output gear 763 is disposed at the output shaft end of the reduction mechanism 762, and the first output gear 763 meshes with an external gear provided on the outer side of the second main shaft 74.

[0056] Specifically, in this embodiment, such as Figure 3 As shown, the spring-loaded foot 78 in the rotary hydraulic chuck assembly is fixed to the top surface of the second mounting base plate 71 by screws. The spring-loaded foot 78 is also fixed to the top surface of the first platform 2 by a threaded telescopic rod. The telescopic rod of the spring-loaded foot 78 will extend and retract under external force, but will return to its original position after the external force disappears. The second rotary cylinder 72 is fixed to the center of the top surface of the second mounting base plate 71 by screws. The second pull tube 73 is inserted into the second spindle 74 and is fixed to the piston rod of the second rotary cylinder 72 by threads. The other end of the second pull tube 73 is fixed to the wedge sleeve of the second chuck by threads. In this embodiment, the spring-loaded foot 78 is used to flexibly connect the rotary hydraulic chuck assembly with the first platform 2, so that it can better cooperate with the threading action.

[0057] The small flange end of the second main shaft 74 is fixed to the rod end face of the second rotary cylinder 72 by screws. The large flange end of the second main shaft 74 is fixed to the bottom surface of the second hydraulic chuck by screws. The mounting bracket is fixed to the top surface of the second mounting base plate 71 by screws. The steering mechanism 76 is fixed to the upper end face of the mounting bracket by screws. The hydraulic motor in the steering mechanism 76 is fixed to the input end of the reduction mechanism 762 by screws. The output shaft of the hydraulic motor is inserted into the input shaft hole of the reduction mechanism 762. The output gear is inserted into the output shaft of the reduction mechanism 762. The output gear is fixed to the output shaft of the reduction mechanism 762 by set screws. This drives the extension and retraction of the piston rod of the second rotary cylinder 72. By pushing and pulling the second pull tube 73, the jaws on the second hydraulic chuck can be driven to open and retract.

[0058] The first hydraulic motor 761 is driven to drive the first output gear 763 to rotate along the axis through the reduction mechanism 762, which in turn drives the second main shaft 74, which meshes with the first output gear 763, to rotate along the axis, and finally drives the second hydraulic chuck to rotate along the axis.

[0059] In some embodiments, this embodiment uses a multi-faceted drill bit to deform the casing for oil suction, thereby causing the outer layer of concrete to crack and detach from the oil suction casing. The multi-faceted drill bit is then pressed into the oil suction casing, causing the oil suction casing to expand and deform, thereby causing the outer layer of concrete to crack and detach from the oil suction casing, reducing resistance for subsequent casing removal.

[0060] When implemented using the device described in this embodiment, the rotary cylinder in the hydraulically driven fixed clamping component 6 can drive the jaws on the first hydraulic chuck to retract and clamp the first drill rod with the multi-faceted drill bit installed at the front end; then, by driving the rotary cylinder in the rotating clamping component 7, the jaws on the second hydraulic chuck can retract and clamp the second drill rod; then, by driving the hydraulic motor in the rotating clamping component, the second hydraulic chuck can drive the second drill rod to rotate; with the piston rod of the lifting cylinder retracting, the front thread of the second drill rod can be screwed into the tail thread hole of the first drill rod, so that they are connected into a long drill rod.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0062] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A tooling for retrieving and recovering an oil suction sleeve, characterized in that, include: The frame has a lifting and layering structure, and the frame is provided with through holes for the sleeve to pass through; A fixed clamping member is disposed on the frame and is used to clamp and fix the rod portion of the multi-faceted drill rod. A rotating clamping member is located directly above the fixed clamping member. The rotating clamping member is used to screw the clamped polygonal drill rod to complete the rod connection action.

2. The tooling for retrieving and recovering an oil suction sleeve according to claim 1, characterized in that: The frame includes a chassis, a first platform, and a second platform. The first platform is mounted on the chassis via a first lifting cylinder, and the second platform is mounted on the first platform via a second lifting cylinder. The through hole is located at the center of the chassis, the first platform, and the second platform.

3. The tooling for retrieving and recovering an oil suction sleeve according to claim 2, characterized in that: The fixed clamping component is assembled from a first mounting base plate, a first rotary cylinder, a first pull tube, a first spindle, and a first clamp. The first mounting base plate is disposed on the chassis, and a first through hole corresponding to the through hole is provided at the center of the first mounting base plate. The first rotary cylinder is mounted on the first mounting base plate, one end of the first pull tube is mounted on the piston rod of the first rotary cylinder, and the other end of the first pull tube is connected to the movable end of the first clamp. The first spindle is sleeved on the first pull tube, and the small flange end of the first spindle is fixed to the rod end face of the first rotary cylinder, while its large flange end is connected to the fixed end of the first clamp.

4. The tooling for retrieving and recovering an oil suction sleeve according to claim 3, characterized in that: The first clamp adopts a hydraulic chuck structure. The wedge sleeve of the first hydraulic chuck is connected to the top end of the first pull tube, controlling the first pull tube to perform push-pull actions to drive the jaws on the first hydraulic chuck to open and retract.

5. The tooling for retrieving and recovering an oil suction sleeve according to claim 3, characterized in that: The rotating clamping component is assembled from a second mounting base plate, a second rotary cylinder, a second pull tube, a second main shaft, a second clamp, a steering mechanism, and a mounting support. The second mounting base plate is mounted on the first layer platform through multiple flexible connectors, and a second through hole corresponding to the first through hole is opened at the center of the second mounting base plate. The second rotary cylinder is mounted on the second mounting base plate, the second pull tube is inserted into the second spindle, and one end of the second pull tube is mounted on the piston rod of the second rotary cylinder, while the other end of the second pull tube is connected to the movable end of the second clamp. The small flange end of the second spindle is fixed to the rod end face of the second rotary cylinder, and the large flange end of the second spindle is connected to the fixed end of the second clamp. The mounting bracket is fixed to the second mounting base plate, the steering mechanism is fixed to the upper end face of the mounting bracket, and the steering mechanism is connected to the second main shaft.

6. The tooling for retrieving and recovering an oil suction sleeve according to claim 5, characterized in that: The second clamp adopts a hydraulic chuck structure. The wedge sleeve of the second hydraulic chuck is connected to the top end of the second pull tube, controlling the second pull tube to perform push-pull actions to drive the jaws on the second hydraulic chuck to open and retract.

7. The tooling for retrieving and recovering an oil suction sleeve according to claim 5, characterized in that: The steering mechanism includes a first hydraulic motor, a reduction mechanism, and a first output gear. The first hydraulic motor is fixedly connected to the input end of the reduction mechanism, and the output shaft of the first hydraulic motor is correspondingly connected to the input shaft hole of the reduction mechanism. The first output gear is disposed at the output shaft end of the reduction mechanism, and the first output gear meshes with an external gear disposed on the outer side of the second main shaft.

8. The tooling for retrieving and recovering an oil suction sleeve according to claim 5, characterized in that: The flexible connector is an elastic foot.

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