Disassembling tool for flow guide sleeve

Abstract

The utility model relates to the technical field of petroleum drilling underground testing instruments, in particular to a flow guide sleeve disassembling tool. The flow guide sleeve disassembling tool comprises a ball screw, and a rotating sleeve is connected to the lower portion of the ball screw. The rear end of the ball screw is connected with a push-pull rod; a screw thread sleeve, a shaft sleeve, a friction plate, a disc spring and a sliding sleeve are connected to the middle of the ball screw. According to the utility model, the flow guide sleeve of a part can be quickly disassembled, the disassembly time can be shortened by 1 / 3, and the flow guide sleeve can be rotated very flexibly, so that a threading hole in the flow guide sleeve is matched with a threading hole of a framework.

Description

Technical Field

[0001] This invention relates to the field of downhole testing instruments for oil drilling, and in particular to a tooling for disassembling a flow guide sleeve. Background Technology

[0002] Currently, rotary steerable systems play a crucial role in reservoir development during horizontal well drilling. After each field application, downhole tools need to be disassembled promptly, and vulnerable components require maintenance. However, current tooling is bulky and inconvenient to use, requiring considerable force from the operator to disassemble the guide sleeve, thus impacting maintenance efficiency. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a flow guide sleeve disassembly tool. The developed flow guide sleeve disassembly tool enables rapid disassembly and rotation of the flow guide sleeve.

[0005] (II) Technical Solution

[0006] To solve the above problems, the present invention provides a tooling for disassembling a flow guide sleeve, comprising:

[0007] A ball screw, with a rotating sleeve connected to its lower part; a push-pull rod connected to the rear end of the ball screw; and a threaded sleeve, a bushing, a friction plate, a disc spring, and a sliding sleeve connected in the middle of the ball screw.

[0008] Preferably, the plurality of friction plates are installed between the bushing and the threaded sleeve to reduce resistance.

[0009] Preferably, the bushing and the threaded sleeve are connected by threads.

[0010] Preferably, the threaded sleeve, bushing, ball screw, disc spring, and sliding sleeve are made of aerospace aluminum alloy.

[0011] Preferably, the ball screw has two vertical holes at the rear end, which are then fixed with bolts after the push-pull rod passes through.

[0012] Preferably, the threaded sleeve has a threaded front end and multiple hollow holes in the middle to reduce weight.

[0013] Preferably, the front end of the rotating sleeve is milled into a hook shape, and the middle is milled into a space to hook the middle rib of the guide sleeve. The rear end is connected and fixed to the ball screw with bolts.

[0014] Preferably, the sliding sleeve has two threaded holes in the middle position, which are connected and fixed to the front end of the handle by male thread.

[0015] (III) Beneficial Effects

[0016] The guide sleeve disassembly fixture introduced in this utility model can quickly disassemble the guide sleeve of the part, reducing the disassembly time by 1 / 3. It can also rotate the guide sleeve very flexibly to match the wire hole on the guide sleeve with the wire hole on the skeleton. The fixture is designed with spring washers and bearings, which makes the disassembly of the guide sleeve very smooth, saving time and effort for the operator. The overall structure is made of aviation aluminum alloy, which is lightweight and easy to use. It uses multiple disc springs and ball screws internally, which have low frictional resistance and are convenient for operators to use. Attached Figure Description

[0017] Figure 1 This is a structural planar view of the disassembly tooling for the flow guide sleeve of the present invention;

[0018] Figure 2 This is a structural diagram of the main structure of the disassembly tooling for the flow guide sleeve of the present invention.

[0019] Among them, 1. threaded sleeve; 2. bushing; 3. handle; 4. ball screw; 5. push-pull rod; 6. ball screw nut; 7. friction plate; 8. disc spring; 9. sliding sleeve; 10. bolt M6X10; 11. bolt M6X20; 12. rotating sleeve. Detailed Implementation

[0020] 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.

[0021] In the description of this invention, it is necessary to understand that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top", and "bottom" are based on the orientation or positional relationship shown in the accompanying drawings. The purpose is only to facilitate the description of this invention and to simplify the description. It is not intended to indicate or imply that the component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0022] like Figure 1-2 As shown, the present invention provides a disassembly fixture for a guide sleeve, specifically including: a ball screw 4, which serves as a connector, and a rotating sleeve 12 connected below the ball screw 4; a push-pull rod 5 connected to the rear end of the ball screw 4; and a threaded sleeve 1, a bushing 2, a friction plate 7, a disc spring 8, and a sliding sleeve 9 connected in the middle of the ball screw 4.

[0023] It should be noted that the threaded sleeve 1 and the bushing 2 are connected by threads, and the multiple disc springs 8 in the middle are compressed, which reduces the force required by the operator.

[0024] In this invention, the front end of the bushing 2 is designed with two grooves, the position of which can be seen from the middle hole of the threaded sleeve 1, so that an iron rod can be inserted to tighten the thread when it is tightened. Both the male and female threads are coated with thread glue to prevent reverse threading during operation. The function is to hold the disc spring in a compressed state. The front thread is connected to the sliding sleeve to fix the threaded sleeve.

[0025] It should be noted that at least two friction plates 7 should be used, placed between the threaded sleeve 1 and the sliding sleeve 9, to act as a bearing and reduce frictional resistance.

[0026] In this invention, the push-pull rod 5 is inserted into the hole at the rear end of the ball screw 4, and is fixed at the tail end with a bolt M6X10 coated with thread adhesive. The front end of the bolt M6X10 locks the groove in the middle of the push-pull rod 5 to prevent the push-pull rod 5 from moving during operation.

[0027] In this invention, the threaded sleeve 12 is made of 7075 aluminum alloy, and the front thread is NC46. It is connected to the female thread of the drill collar skeleton when the flow guide sleeve is disassembled. The middle and near the end are hollowed out to reduce the overall weight and facilitate the tightening of the bushing.

[0028] In this invention, the function of the ball screw 4 is to drive the rotating sleeve to move axially when the handle is rotated, thereby driving the guide sleeve to move forward and backward, thus realizing the installation and removal of the guide sleeve.

[0029] In this invention, the function of the disc spring 8 is to store energy through the disc spring assembly when moving the guide sleeve, so that the operator can push the guide sleeve with a small force when performing the disassembly and assembly of the guide sleeve.

[0030] In this invention, the rotating sleeve 12 is used to hook the inner hole of the guide sleeve and drive the guide sleeve to move back and forth. When the guide sleeve needs to rotate, the groove at the front end can drive the guide sleeve to rotate until the wire hole is connected.

[0031] First, assemble the entire tooling according to the drawings. When disassembling the guide sleeve, turn the handle (3) in advance so that the threaded sleeve (1) moves toward the push-pull rod (5) to facilitate the rotating sleeve (12) to hook the guide sleeve. Then turn the handle (3) in the opposite direction. When it reaches the appropriate position, the male thread of the threaded sleeve (1) connects with the female thread of the drill collar skeleton of the downhole instrument until it is in place. Then, the operator holds the push-pull rod (5) with one hand and turns the rotating handle (3) with the other hand so that the rotating handle (3) moves in the opposite direction of the push-pull rod (5), thereby driving the rotating sleeve (12) and the guide sleeve to move, thus realizing the disassembly of the guide sleeve. Conversely, the installation of the guide sleeve is the opposite of the above steps. When the guide sleeve needs to be rotated, just turn the push-pull rod (5), and the rotating sleeve (12) at the front end of the tooling will drive the guide sleeve to rotate until it reaches the appropriate position.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flow sleeve dismounting tool, characterized in that, Include: Ball screw (4), the ball screw (4) is connected, the ball screw (4) is connected with rotating sleeve (12) below;The rear end of the ball screw (4) is connected with the push-pull rod (5);The ball screw (4) is connected with the screw sleeve (1), the shaft sleeve (2), the friction plate (7), the disc spring (8) and the sliding sleeve (9).

2. The guide sleeve dismounting tool according to claim 1, characterized in that, The friction plate (7) is used for two pieces, which is placed between the screw sleeve (1) and the sliding sleeve (9), which plays the role of bearing and reduces the friction resistance.

3. The guide sleeve dismounting tool according to claim 1, characterized in that, The push-pull rod (5) is inserted into the hole at the rear end of the ball screw (4), and is fixed at the tail end with a bolt M6X10 coated with thread glue, and the bolt M6X10 is inserted into the recess in the middle of the push-pull rod (5) to prevent the push-pull rod (5) from moving during work.

4. The flow sleeve dismounting tool according to claim 1, characterized in that, The screw sleeve (1) is made of 7075 aluminum alloy, the front end thread is NC46, and the female thread of the drill collar skeleton is connected when the flow guide sleeve is disassembled.

5. The flow sleeve dismounting tool according to claim 1, characterized in that, The shaft sleeve (2) is designed with two recesses at the front end, and the recesses can be seen from the middle hole of the screw sleeve (1), which is convenient for inserting an iron rod when the thread is tightened, and the male and female threads are coated with thread glue to prevent the work from being reversed during work;The effect is to push the disc spring to make it in compression state, and the front thread is connected with the sliding sleeve to fix the screw sleeve.

6. The flow sleeve dismounting tool according to claim 1, characterized in that, The friction plate (7) is used for at least two pieces, which is placed between the screw sleeve (1) and the sliding sleeve (9), which plays the role of bearing and reduces the friction resistance.

7. The flow sleeve dismounting tool according to claim 1, characterized in that, The rotating sleeve (12) is used to hook the inner hole of the flow guide sleeve, drive the front and rear movement of the flow guide sleeve, and when the flow guide sleeve needs to rotate, the recess at the front end can drive the flow guide sleeve to rotate until the wire hole is connected.

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