UST type sliding sleeve supporting tool

Abstract

The utility model discloses a UST type sliding sleeve supporting tool. The UST type sliding sleeve supporting tool comprises a fishing neck; one end of the mandrel is fixedly connected with one end of the fishing neck; the supporting key is arranged in the middle of the fishing neck; the right-angle step is arranged in the circumferential direction of the supporting key; the supporting spring is arranged between the fishing neck and the supporting key; the spring sleeve is arranged outside the mandrel, and one end of the spring sleeve is in contact with the supporting key; one end of the positioning claw sleeve is connected with the spring sleeve; and the positioning claw is arranged outside the mandrel and is connected with the other end of the positioning claw sleeve. A positioning claw boss is arranged on the positioning claw in the circumferential direction. A main spring is arranged between the spring sleeve and the central spindle, and the central spindle is sleeved with the main spring. Supporting force can be provided for the bottom of the steel wire tool string, so that the steel wire tool string plays a proper jarring role, the universality is high, and the operation safety of the switch sliding sleeve is improved.

Description

Technical Field

[0001] The utility model relates to a UST type sliding sleeve supporting tool, belonging to the field of wire working tools. Background Art

[0002] Wireline operation is an indispensable technical means in the development of oil and gas wells. During wireline operation, the downhole tools of oil and gas wells are operated by mechanically lifting and lowering the steel wire and cable wrapped around the winch. It is an operation with strong operability, strong experience and high risk.

[0003] For a long time, the sliding sleeve tool had no support point when operating the sliding sleeve during wireline operations, resulting in the various jars in the wireline tool string being unable to be used normally and unable to play their due role, and failing to effectively, quickly and safely open and close the sliding sleeve.

[0004] When encountering the upper closing or opening (inner sleeve upward operation), the wire tool string including the sliding sleeve tool has no bottom support, and the chain jar cannot be closed, failing to play the upper shock effect. In order to solve this problem, the support tool of the present application is specially designed to provide a supporting force (support point) at the bottom of the wire tool string so that the chain jar or spring jar can be closed to play the due shock effect. Utility Model Content

[0005] The utility model designs and develops a UST type sliding sleeve supporting tool, which can provide supporting force for the wire tool string at the bottom, so that it can play its due shocking role, has strong versatility, and improves the safety of the switch sliding sleeve operation.

[0006] The technical solution provided by this utility model is:

[0007] A UST type sliding sleeve support tool, comprising:

[0008] Salvage neck;

[0009] a core shaft, one end of which is fixedly connected to one end of the fishing neck;

[0010] a support key disposed in the middle portion of the fishing neck;

[0011] a right-angle step, which is arranged along the circumference of the support key;

[0012] a support spring disposed between the fishing neck and the support key;

[0013] a spring sleeve, which is arranged outside the core shaft, and one end of the spring sleeve is in contact with the support key;

[0014] a positioning claw sleeve, one end of which is connected to the spring sleeve;

[0015] A positioning claw is arranged outside the core shaft and connected to the other end of the positioning claw sleeve.

[0016] Preferably, a positioning claw boss is provided on the positioning claw along the circumferential direction.

[0017] Preferably, a main spring is provided between the spring sleeve and the core shaft, and the main spring is sleeved on the core shaft.

[0018] Preferably, it also includes:

[0019] an upper retaining ring disposed at one end of the salvage neck and adjacent to the other end of the support key;

[0020] A lower retaining ring is arranged between the spring sleeve and the fishing neck and is located at one end of the spring sleeve.

[0021] Preferably, the fishing neck and the core shaft are threadedly connected and fixed by a pin.

[0022] Preferably, it also includes:

[0023] An auxiliary spring is sleeved on the outside of the core shaft, with one end resting on the positioning claw sleeve and the other end resting on the positioning claw

[0024] The beneficial effects described in the present invention are as follows: the UST type sliding sleeve support tool provided by the present invention can provide a support point for the wire tool string at the bottom, thereby providing supporting force for the wire tool string, so that tools such as chain jars or spring jars can be closed to play their due jarring effect.

[0025] This tool is easy to assemble and disassemble, has strong versatility, and can be applied to any type of sliding sleeve, thereby improving the safety of switch sliding sleeve operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the UST type sliding sleeve support tool described in the present utility model.

[0027] Figure 2 This is a schematic diagram of the functional composition of the UST type sliding sleeve support tool described in the present invention.

[0028] Figure 3 This is a working diagram of the sliding sleeve, B-type tool, and supporting tool described in the present invention. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0030] like Figure 1-3As shown, the utility model provides a UST type sliding sleeve support tool, including: a salvage neck 1, an upper retaining ring 2, a support key 3, a lower retaining ring 4, a spring sleeve 5, a positioning claw sleeve 6, a positioning claw 7, an open ring 8, a core shaft 9, a support spring 10, a pin 11, a main spring 12, and an auxiliary spring 13.

[0031] One end of the fishing neck 1 is fixedly connected to one end of the core shaft 9. A support key 3 is provided in the middle of the fishing neck 1. A right-angle step is provided on the support key 3 along the circumference. A support spring 10 is provided between the fishing neck 1 and the support key 3. A spring sleeve 5 is provided on the outside of the core shaft 9. One end of the spring sleeve 5 contacts the support key 3. One end of the positioning claw sleeve 6 is connected to the spring sleeve 5 and the other end is connected to the positioning claw 7. The spring sleeve 5, the positioning claw sleeve 6, and the positioning claw 7 are provided on the outside of the core shaft 9 in this order.

[0032] The locating claw 7 is provided with a circumferentially arranged locating claw boss. The main spring 12 is mounted on the core shaft 5 and is located between the spring sleeve 5 and the core shaft 9. The upper retaining ring 2 is provided at one end of the fishing neck 1, near the other end of the support key 3. The lower retaining ring 4 is provided between the spring sleeve 5 and the fishing neck 1, and is located at one end of the spring sleeve 5. The fishing neck 1 and the core shaft 9 are connected by a thread and reinforced by a pin 11. The auxiliary spring 13 is mounted on the outside of the core shaft 9, with one end of the auxiliary spring 13 resting on the locating claw sleeve 6 and the other end resting on the locating claw 7. An open ring 8 is also provided on the core shaft 7.

[0033] like Figure 2 As shown, the support tool includes three major functional parts: the connection part includes an upper joint and a lower joint A, a support function part B and a selection function part C.

[0034] The support key 3 is the most important part of the support tool and the soul of the support tool. The support key 3 has two functions: on the one hand, it can be used for support, and on the other hand, it can be used for selection.

[0035] The fishing neck 1, also known as the upper joint, serves as a link between the upper and lower parts. A female buckle at one end connects to the B-type sliding sleeve switch tool, which is then attached to the lower end of the tool. A dedicated fishing neck is located around one end for use with the dedicated fishing tool. The middle section of the upper joint body carries the upper retaining ring 2, support key 3, and support spring 10. The other end is connected to the core shaft 9.

[0036] Among the support key 3 and the support spring 10, the support spring 10 provides the support key with an outward expansion force. The 90° right-angle step in the middle of the support key 3 is the support point for providing the support force. Under the action of the spring force, the support key 3 forms a good contact state with the step at the lower end of the inner sleeve, providing a firm support force. Figure 3 shown.

[0037] Working Principle: This support tool needs to be used together with the B-type sliding sleeve switch tool in order to fully exert its supporting function.

[0038] Support function: The 90° right-angle step in the middle of the support key contacts the step at the lower end of the sliding sleeve to form a positioning support point, such as Figure 3 As shown in the red circle, the spring force makes the support point more secure, providing reliable support for the wire tool string.

[0039] Support tool support principle: After the support key is opened, the support tool moves downward until the right-angle step in the middle of the support key contacts the step at the lower end of the sliding sleeve to form a positioning and support point, providing support for the wire tool string. Figure 3 shown.

[0040] Working process:

[0041] 1. Support tool selection function settings.

[0042] 2. Connect the lower end of the B-type sliding switch tool to the UST support tool to form a B-type tool + UST tool combination.

[0043] 3. When the UST tool is lowered into the well, it should directly pass through the non-operating sliding sleeve (non-target sliding sleeve) if it encounters one.

[0044] 4. When reaching the target sleeve, first go down through the target sleeve, then support the tool to go up through the target sleeve and touch the positioning claw boss at the same time ( Figure 2 (Part B in the middle), the positioning claw moves downward to drive the spring sleeve downward to release the squeeze on the support key boss, releasing the support key to open it.

[0045] 5. The support tool moves downward until the support key step contacts the step at the lower end of the sleeve to form a positioning and support point (such as Figure 3 The red circle in the middle provides support for the wire tool string.

[0046] 6. After the support tool plays its supporting role, the B-type tool can enter the formal opening and closing sliding sleeve operation.

[0047] 7. After the sleeve switch operation is completed, the support tool and tool B are recovered to the ground together, and the sleeve switch operation is completed.

[0048] The UST type sliding sleeve support tool provided by the utility model can provide a support point for the wire tool string at the bottom, thereby providing supporting force for the wire tool string so that tools such as chain jars or spring jars can be closed to play their due jarring effect.

[0049] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A UST type sliding sleeve support tool, characterized in that: include: Salvage neck; a core shaft, one end of which is fixedly connected to one end of the fishing neck; a support key disposed in the middle portion of the fishing neck; a right-angle step, which is arranged along the circumference of the support key; a support spring disposed between the fishing neck and the support key; a spring sleeve, which is arranged outside the core shaft, and one end of the spring sleeve is in contact with the support key; a positioning claw sleeve, one end of which is connected to the spring sleeve; A positioning claw is arranged outside the core shaft and connected to the other end of the positioning claw sleeve.

2. The UST type sliding sleeve support tool according to claim 1, characterized in that: A positioning claw boss is circumferentially arranged on the positioning claw.

3. The UST type sliding sleeve support tool according to claim 2, characterized in that: A main spring is provided between the spring sleeve and the core shaft, and the main spring is sleeved on the core shaft.

4. The UST type sliding sleeve support tool according to claim 3, characterized in that: Also includes: an upper retaining ring disposed at one end of the salvage neck and adjacent to the other end of the support key; A lower retaining ring is arranged between the spring sleeve and the fishing neck and is located at one end of the spring sleeve.

5. The UST type sliding sleeve support tool according to claim 4, characterized in that: The fishing neck and the core shaft are threadedly connected and fixed by a pin.

6. The UST type sliding sleeve support tool according to claim 5, characterized in that: Also includes: An auxiliary spring is sleeved on the outside of the core shaft, with one end abutting against the positioning claw sleeve and the other end abutting against the positioning claw.

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