Hard sealing soluble bridge plug

A soluble bridge and hard sealing technology, applied in the directions of sealing/isolation, wellbore/well components, earth-moving drilling, etc., to achieve the effect of strong temperature adaptability, balanced size and high pressure resistance.

Pending Publication Date: 2020-02-14
PETRO KING ENERGY TECH HUIZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hard seal soluble bridge plug, which solves the problems of the above-mentioned many defects in the sealing of soluble rubber cartridges in the prior art

Method used

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  • Hard sealing soluble bridge plug
  • Hard sealing soluble bridge plug
  • Hard sealing soluble bridge plug

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Embodiment Construction

[0021] The structure and working principle of the hard-sealed soluble bridge plug of the present invention will be further described below in conjunction with the accompanying drawings and examples:

[0022] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " Vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0023] Such as Figure 1-2 As shown, the preferred embodiment...

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Abstract

The invention relates to a hard sealing soluble bridge plug which comprises a body made of soluble metal. The body comprises a cone body, a slip and a guiding shoe which are connected from top to bottom; at least one metal sealing ring is arranged in a connecting position of the periphery of the cone body and the slip in a sleeving way; and the metal sealing ring is made of soluble metal. The hardsealing soluble bridge plug provided by the invention is applied to the field of fracturing yield increase operation of an oil gas well, so that the hard sealing soluble bridge plug can be more simply and conveniently stored, more stably sealed, and more firmly anchored; the setting success rate of the hard sealing soluble bridge plug is effectively improved; and the hard sealing soluble bridge plug better adapts to underground environment. In addition, the structure is simple and compact, and the processing and the manufacturing are easy, so that the cost of the soluble bridge plug is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, and more specifically relates to a hard-sealed soluble bridge plug. Background technique [0002] At present, the layered fracturing of unconventional oil and gas is mainly based on the staged fracturing of composite bridge plugs. However, after the completion of composite bridge plug fracturing, coiled tubing drilling and grinding are required to restore the wellbore diameter; drilling and grinding require the use of coiled tubing Tools such as trucks, coiled tubing downhole tools, grinding shoes, etc. have high operating costs, and there is a high risk for slimhole and ultra-deep well operations. [0003] As the depth of unconventional oil and gas production increases, it becomes more and more difficult to use coiled tubing to drill and grind, so soluble bridge plugs emerge as the times require. Soluble bridge plugs have been used more and more in unconventional oil and gas staged fra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/122
CPCE21B33/1212E21B33/1291E21B33/122E21B33/134E21B2200/08E21B33/128E21B33/1293
Inventor 庞瑞杰李江平周茂勇
Owner PETRO KING ENERGY TECH HUIZHOU CO LTD
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