CN111677477A

CN111677477A - Novel single-slip ball seat and bridge plug and preparation method thereof

Info

Publication number: CN111677477A
Application number: CN202010546465.2A
Authority: CN
Inventors: 席君杰; 郭强; 魏设; 李庆瑞; 王凯志
Original assignee: Beijing Zhongke Jinteng Technology Co ltd
Current assignee: Beijing Zhongke Jinteng Technology Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2020-09-18

Abstract

The invention provides a novel ball seat manufactured by a single slip, a bridge plug and a manufacturing method thereof, the bridge plug is simple in overall structure and small in size, the bridge plug comprises a conical central tube, a metal rubber sealing ring, a slip gasket, a slip and a lower connector, the slip gasket is used for reducing the probability of the bridge plug in advance in a setting mode, the setting distance of the metal rubber sealing ring is increased, the sealing performance of the metal rubber sealing ring is improved, the structure of the bridge plug is more attached to the conical central tube and the slip, the overall structure of the bridge plug is stable in the process of entering a well, setting and bearing, the size of the bridge plug is small, the dissolving efficiency is also improved, and the working efficiency is improved.

Description

Novel single-slip ball seat and bridge plug and preparation method thereof

Technical Field

The invention relates to a novel single-slip ball seat, a bridge plug and a preparation method of the novel single-slip ball seat.

Background

Under the condition that petroleum gas exploitation is increasingly enlarged at present, various bridge plugs appear, most of the bridge plugs are complex in structure and large in size, and cannot stably work under complex well conditions, so that petroleum gas exploitation work is greatly influenced.

Disclosure of Invention

The invention aims to provide a novel single-slip ball seat, a bridge plug and a preparation method of the novel single-slip ball seat.

According to one aspect of the invention, a novel single-slip ball seat and a bridge plug and a preparation method thereof are provided:

(1) the outer part of the conical central tube is in a long conical shape, the center of the conical central tube is provided with a through hole, and the tail part of the conical central tube is processed into a ball seat with a corresponding size;

(2) a metal rubber seal ring, wherein rubber is vulcanized or compounded on soluble metal;

(3) the outer part of the slip gasket is processed into a cone shape, the angle of the inner cone shape of the slip gasket is the same as that of the cone-shaped central pipe, and the slip gasket is evenly divided into a plurality of flaps;

(4) slips are adhesive slips;

(5) the lower joint and the lower end of the lower joint are processed into shallow grooves corresponding to the lower end of the slips, so that the slips are uniformly distributed in the setting process, the stress grades of the slips are the same, and the integral setting structure of the bridge plug is stable.

The soluble bridge plug manufactured by the method has stable structure and small volume, and is suitable for various well conditions.

The added gasket under the slip is characterized in that the probability of bridge plug setting in advance is reduced, the setting distance of the metal rubber sealing ring is increased, and the sealing performance of the metal rubber sealing ring is improved.

Drawings

FIG. 1 is a self-contained view of a bridge plug, wherein 1 a tension rod, 2 a tapered center tube, 3 a metal rubber seal ring, 4 a slip washer, 5 a soluble slip, and 6 a lower joint;

FIG. 2 a conical center tube;

FIG. 3 a metal rubber seal ring, wherein 1 soluble rubber, 2 soluble metal;

FIG. 4 a slip shim;

FIG. 5 a soluble slip;

FIG. 6 a lower joint;

FIG. 7 downhole setting diagram with 1 casing, 2 conical core base pipe, 3 metallic sealing rings, 4 soluble slips, 5 slips pads.

Detailed Description

Example 1

Connecting the bridge plug with the tool string, pumping to a corresponding position in a near section, setting by gunpowder or liquid, enabling the 4 soluble slips, the 5 slip gasket and the 2 conical central tube to be tightly attached and fixed together, fixing at the setting position and pushing the 3 metal sealing ring to expand, enabling the rubber and the metal to be tightly attached to the 1 tube wall, and further realizing metal and rubber double sealing, as shown in fig. 7.

Claims

1. A novel single slip ball seat and bridge plug mainly comprises: 1. the pipe comprises a conical central pipe, 2 metal rubber sealing rings, 3 slips, 4 slip gaskets and 5 lower joints.

2. The method of claim 1, further comprising: the novel single slip is divided into an upper part and a lower part, so that the probability of setting the bridge plug in advance is reduced, the setting distance of the metal rubber sealing ring is increased, and the sealing performance of the metal rubber sealing ring is improved.

3. The method of claim 1, further comprising: novel single slips inner structure is the circular arc toper, and the cone center tube of laminating more, overall structure is more stable.

4. The method of claim 1, further comprising: the novel single slip inner structure adopts the arc taper shape, so that the processing procedures are reduced, and the production efficiency is improved.

5. The method of claim 1, further comprising: novel unijunction is simple structure, and is small, has improved work efficiency.

6. The method of claim 1, further comprising: the soluble bridge plug manufactured by the novel single slip has better sealing performance and more stable work.