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Pressure expansion type soluble bridge plug

A bridge plug and expansion head technology, applied in the field of pressure-expandable dissolvable bridge plugs, can solve the problems of many structural components, long length and small inner diameter of dissolvable bridge plugs, and achieves simple structure, accurate setting force, and reduced Effect of Tool Length

Pending Publication Date: 2021-11-02
重庆贝斯特石油科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the soluble bridge plug in this technology has many structural parts, and the design has defects, such as long length and small inner diameter, and it does not use the

Method used

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  • Pressure expansion type soluble bridge plug
  • Pressure expansion type soluble bridge plug
  • Pressure expansion type soluble bridge plug

Examples

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Embodiment Construction

[0022] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0023] refer to figure 1 , an inflatable dissolvable bridge plug, including a pull rod 1, the upper end of the pull rod 1 is provided with threads for connecting with the setting tool, and the lower end is provided with threads for connecting with the upper end of the pull cap 11 ;

[0024] Tie rod 1 is sequentially installed with expansion head 2, central tube 3, cone 7, slips 9, and base 10 from the upper end to the lower end;

[0025] The lower end of the expansion head 2 is threadedly connected to the upper end of the central tube 3, and the rubber tube 4, the rubber tube shoulder protection component 5, the limiting joint 6, the locking ring 7 and the cone 8 a...

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PUM

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Abstract

The invention provides a pressure expansion type soluble bridge plug. The pressure expansion type soluble bridge plug comprises a pull rod, wherein threads are arranged at the upper end part of the pull rod and are used for being connected with a setting tool; threads are arranged at the lower end part of the pull rod and are used for being connected with the upper end part of a pull cap; an expansion head, a central pipe, a cone, a slip and a base are sequentially mounted on the pull rod from the upper end part to the lower end part; the lower end part of the expansion head is in threaded connection with the upper end part of the central pipe; a rubber barrel, a rubber barrel shoulder protection assembly, a limiting joint, a lock ring and the cone are sequentially arranged on the central pipe in a sleeving manner; the lower end part of the limiting joint is in threaded connection with the upper end part of the cone; the lock ring is mounted in the joint of the limiting joint and the cone; and the inner surface of the lock ring is meshed with the outer surface of the central pipe. According to the pressure expansion type soluble bridge plug, the rubber barrel is of a pressure expansion type structure, and a rubber barrel protection component is not required at the upper end part, so that the structure is simplified; the rubber barrel integrates the advantages of expansion and compression in a sealing manner, so that the sealing is more reliable; and a locking structure of the rubber barrel is changed from slip locking to the lock ring, so that the processing difficulty of the component and the length of the tool are reduced.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of oil and gas field development, and in particular to a compressible dissolvable bridge plug. Background technique [0002] The Chinese patent document publication number is CN108678707A to provide a kind of dissolvable bridge plug for fracturing, comprising: a central tube, the first end of the central tube has a protrusion protruding radially outward, and the second end of the central tube is arranged outside Limiting part; Anti-rotation key, set on the central tube through the first anti-rotation mechanism, and located between the raised part and the limit piece; Pushing mechanism, Set on the anti-rotation key through the second anti-rotation mechanism; Rubber cartridge mechanism, the rubber cartridge mechanism is set on the anti-rotation key through the third anti-rotation mechanism, the rubber cartridge mechanism is located between the push mechanism and the limiter; the first...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/134E21B33/128
CPCE21B33/134E21B33/128
Inventor 钱晓晨王晓华姚文超
Owner 重庆贝斯特石油科技有限公司
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