CN210768671U

CN210768671U - Disposable setting tool

Info

Publication number: CN210768671U
Application number: CN201921353311.0U
Authority: CN
Inventors: 钟庆; 张正旭; 马天名; 曹晓龙
Original assignee: Chengdu Rock Petroleum Technology Development Co ltd
Current assignee: Chengdu Rock Petroleum Technology Development Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-06-16
Anticipated expiration: 2029-08-20

Abstract

The utility model discloses a disposable setting tool, which comprises a mandrel (1), an upper joint (2) and a thrust cylinder (3), wherein the upper joint (2) is connected on the outer wall of the mandrel (1), and the thrust cylinder (3) is connected with the lower end of the upper joint (2); dabber (1) up end is equipped with counter bore (101) that are used for the powder charge, dabber (1) middle part is provided with annular boss A (102) with the laminating of thrust cylinder (3) inner wall, annular boss A (102) downside, thrust cylinder (3) inner wall is equipped with annular boss B (301) with the laminating of dabber (1) outer wall, it holds chamber (4) to form between annular boss A (102) and the annular boss B (301), be equipped with on dabber (1) the lateral wall and communicate airflow hole (103) that hold chamber (4) and counter bore (101), be equipped with exhaust hole (5) on thrust cylinder (3). The utility model has the characteristics of simple structure can disposable, need not maintenance reduce cost, automatic exhaust in the pit, no hydraulic oil.

Description

Disposable setting tool

Technical Field

The utility model relates to a bridge plug sits and seals technical field, especially disposable seat instrument.

Background

The bridge plug is used for oil and gas well sealing, has the characteristics of few construction procedures, short period and accurate clamping and sealing position, and is divided into a permanent bridge plug and a removable bridge plug; the working principle of the sealing device is that a cable or a pipe column is used for conveying the sealing device to a preset position of a shaft, pressure generated by a setting tool acts on an upper slip, tension acts on a tension rod, an upper cone and a lower cone apply an upper pressing and a lower pulling force on a sealing rubber cylinder, when the tension reaches a certain value, the tension rod is broken, and the setting tool is separated from a bridge plug. At the moment, the locking device on the central pipe of the bridge plug plays a role, the upper slips and the lower slips are crushed and embedded on the inner wall of the casing pipe, and the rubber cylinder expands and seals to complete setting.

The setting worker that uses commonly at present has hydraulic pressure setting instrument, mechanical setting instrument and powder burning setting instrument, but no matter which kind of setting instrument all involves dismantlement and maintenance, and all kinds of part structures are complicated easy to go wrong, and the later stage needs the maintenance to be maintained, leads to with high costs, wastes time and energy moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a simple structure, but disposable need not the maintenance, reduce cost, automatic exhaust in the pit, the disposable setting instrument of no hydraulic oil.

The purpose of the utility model is realized through the following technical scheme:

the device comprises a mandrel, an upper joint and a thrust cylinder, wherein the upper joint is connected to the outer wall of the mandrel, and the thrust cylinder is sleeved outside the mandrel and is connected with the lower end of the upper joint; the core shaft up end is provided with the counter bore that is used for the loading powder, and the dabber middle part is provided with annular boss A, and annular boss A and the laminating of thrust cylinder inner wall, annular boss A downside, thrust cylinder inner wall are provided with annular boss B, and annular boss B and the laminating of dabber outer wall form between annular boss A and the annular boss B and hold the chamber, are provided with the intercommunication on the dabber lateral wall and hold the air current hole of chamber and counter bore, are provided with the exhaust hole that is located annular boss A upside and runs through the inside and outside wall on the thrust cylinder.

Furthermore, the thrust cylinder is formed by connecting a thrust cylinder A and a thrust cylinder B.

Further, the thrust cylinder A and the thrust cylinder B are connected in a threaded manner.

Further, the mandrel is formed by connecting a mandrel A and a mandrel B.

Further, the connection mode of the mandrel A and the mandrel B is threaded connection.

Furthermore, on the outer wall of the thrust cylinder B, a sealing groove A is arranged at the position of the connection surface with the thrust cylinder A, and a sealing ring A is installed on the sealing groove A.

Furthermore, the side wall of the upper joint is provided with a pin hole, the side wall of the mandrel is provided with a corresponding pin groove, and the upper joint is connected with the mandrel through a shearing pin arranged in the pin hole and the pin groove.

Further, the upper connector and the mandrel are connected through threads.

Further, the outer wall of the annular boss A is provided with a sealing groove B and a sealing ring B, and the inner wall of the annular boss B is provided with a sealing groove C and a sealing ring C.

Furthermore, a dustproof plug is arranged in the exhaust hole.

The utility model has the advantages of it is following: the utility model has simple structure, can be used once, does not need later maintenance, and reduces the cost; utilize the burning of gunpowder to increase atmospheric pressure, gaseous entering holds the chamber and promotes the thrust section of thick bamboo, when the exhaust hole when holding the chamber, realizes self-bleeding, need not hydraulic oil.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a third embodiment of the present invention;

fig. 4 is a schematic structural view of a mandrel according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a thrust cylinder according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an upper joint according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of a thrust cylinder in a second embodiment and a third embodiment of the present invention;

fig. 8 is a schematic structural view of a mandrel according to a third embodiment of the present invention;

fig. 9 is a schematic structural diagram of an upper joint in the second embodiment and the third embodiment of the present invention;

in the figure: 1-mandrel, 101-counter bore, 102-annular boss A, 103-airflow hole, 104-pin groove, 105-sealing groove B, 2-upper joint, 201-pin hole, 3-thrust cylinder, 301-annular boss B, 302-sealing groove C, 4-containing cavity, 5-exhaust hole, 6-shearing pin, 7-dustproof plug, 11-mandrel A, 12-mandrel B, 31-thrust cylinder A, 32-thrust cylinder B and 3201-sealing groove A.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

Example one

As shown in fig. 1 and fig. 4-6, the disposable setting tool comprises a mandrel 1, an upper joint 2 and a thrust cylinder 3, wherein the upper joint 2 is connected to the outer wall of the mandrel 1, in this embodiment, a pin hole 201 is formed in the side wall of the upper joint 2, a corresponding pin groove 104 is formed in the side wall of the mandrel 1, and the upper joint 2 and the mandrel 1 are connected through a shearing pin 6 installed in the pin hole 201 and the pin groove 104.

The thrust cylinder 3 is sleeved outside the mandrel 1 and is connected with the lower end of the upper joint 2, and the connection mode can be selected from threaded connection; the upper end face of the mandrel 1 is provided with a counter bore 101 used for charging powder, the middle of the mandrel 1 is provided with an annular boss A102, the annular boss A102 is attached to the inner wall of the thrust cylinder 3, the lower side of the annular boss A102 is provided with an annular boss B301 on the inner wall of the thrust cylinder 3, the annular boss B301 is attached to the outer wall of the mandrel 1, a containing cavity 4 is formed between the annular boss A102 and the annular boss B301, the side wall of the mandrel 1 is provided with an airflow hole 103 communicated with the containing cavity 4 and the counter bore 101, the thrust cylinder 3 is provided with an exhaust hole 5 which is located on the upper side of the annular boss A102 and penetrates through the inner wall.

The outer wall of the annular boss A102 is provided with a sealing groove B105 and a sealing ring B, and the inner wall of the annular boss B301 is provided with a sealing groove C302 and a sealing ring C.

Example two

As shown in fig. 2, fig. 7 and fig. 9, the present embodiment is different from the first embodiment in that, in order to reduce the difficulty of processing and manufacturing and reduce the processing cost, the thrust cylinder 3 is composed of a thrust cylinder a31 and a thrust cylinder B32 which are connected by threads; and a sealing groove A3201 and a sealing ring A are arranged on the outer wall of the thrust cylinder B32 at the connection surface with the thrust cylinder A31.

This embodiment is different from the first embodiment in that the upper joint 2 and the mandrel 1 are connected by a screw.

EXAMPLE III

As shown in fig. 3 and fig. 7 to 9, this embodiment is different from the second embodiment in that, in order to further reduce the difficulty of processing and manufacturing and reduce the processing cost, the mandrel 1 is composed of a mandrel a11 and a mandrel B12 which are connected by threads.

The working process of the utility model is as follows: will the utility model discloses be connected with the bridging plug, the below is to behind the well suitable position, ignite the powder in the 1 counter bore 101 of dabber, after the powder burning, gas pressure increases, gas after the pressurization gets into through air current hole 103 and holds in the chamber 4, gaseous promotion thrust cylinder 3 downstream, because thrust cylinder 3 links together with top connection 2, consequently, thrust cylinder 3 drives top connection 2 and breaks the shear pin 6 of connecting top connection 2 and dabber 1 (or breaks the connecting thread of connecting top connection 2 and dabber 1), make thrust cylinder 3 and top connection 2 downstream together, sit and seal the bridging plug and give up, when exhaust hole 5 on thrust cylinder 3 when holding chamber 4, hold the pressurized gas in the chamber 4 and break the dustproof plug 7 in the exhaust hole 5, gas is discharged by exhaust hole 5, sit and seal the operation and end.

Claims

1. Disposable setting instrument, its characterized in that: the device comprises a mandrel (1), an upper joint (2) and a thrust cylinder (3), wherein the upper joint (2) is connected to the outer wall of the mandrel (1), and the thrust cylinder (3) is sleeved outside the mandrel (1) and is connected with the lower end of the upper joint (2); the upper end face of the mandrel (1) is provided with a counter bore (101) used for charging powder, the middle of the mandrel (1) is provided with an annular boss A (102), the annular boss A (102) is attached to the inner wall of the thrust cylinder (3), the lower side of the annular boss A (102) is provided with an annular boss B (301) on the inner wall of the thrust cylinder (3), the annular boss B (301) is attached to the outer wall of the mandrel (1), a containing cavity (4) is formed between the annular boss A (102) and the annular boss B (301), the side wall of the mandrel (1) is provided with an airflow hole (103) communicated with the containing cavity (4) and the counter bore (101), and the thrust cylinder (3) is provided with an exhaust hole (5) which is located on the upper side of the annular boss A (.

2. The disposable setting tool of claim 1, wherein: the thrust cylinder (3) is formed by connecting a thrust cylinder A (31) and a thrust cylinder B (32).

3. The disposable setting tool of claim 2, wherein: the thrust cylinder A (31) and the thrust cylinder B (32) are connected in a threaded manner.

4. The disposable setting tool of claim 2, wherein: the mandrel (1) is formed by connecting a mandrel A (11) and a mandrel B (12).

5. The disposable setting tool of claim 4, wherein: the connection mode of the mandrel A (11) and the mandrel B (12) is threaded connection.

6. The disposable setting tool of claim 4, wherein: and a sealing groove A (3201) is arranged on the connecting surface of the outer wall of the thrust cylinder B (32) and the thrust cylinder A (31) and is provided with a sealing ring A.

7. The disposable setting tool of any of claims 1-6, wherein: the side wall of the upper joint (2) is provided with a pin hole (201), the side wall of the mandrel (1) is provided with a corresponding pin groove (104), and the upper joint (2) is connected with the mandrel (1) through a shearing pin (6) arranged in the pin hole (201) and the pin groove (104).

8. The disposable setting tool of any of claims 1-6, wherein: the upper joint (2) is connected with the mandrel (1) through threads.

9. The disposable setting tool of any of claims 1-6, wherein: the outer wall of the annular boss A (102) is provided with a sealing groove B (105) and a sealing ring B, and the inner wall of the annular boss B (301) is provided with a sealing groove C (302) and a sealing ring C.

10. The disposable setting tool of any of claims 1-6, wherein: and a dustproof plug (7) is arranged in the exhaust hole (5).