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Downhole fully-soluble bridge plug

A bridge plug and outer surface technology, which is applied in the direction of wellbore/well parts, earthwork drilling, sealing/isolation, etc., to achieve the effect of increasing flow rate, good use effect and ensuring effective sealing

Pending Publication Date: 2021-07-13
吴帮民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a fully soluble bridge plug for downhole use, which has the advantages of auxiliary fixation, convenient plug removal and avoidance of abnormal collisions, and solves the problems mentioned in the above-mentioned background technology

Method used

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  • Downhole fully-soluble bridge plug
  • Downhole fully-soluble bridge plug
  • Downhole fully-soluble bridge plug

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Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] see Figure 1-5 , a fully soluble bridge plug for downhole, comprising an inner casing 1, the outer surface of the inner casing 1 is covered with a composite vertebral body 2, and the outer surface of the inner casing 1 is covered with a composite rubber tube 3 located inside the composite vertebral body 2 , the outer surface of the inner sleeve 1 is provided with a connecting head 4, the end surface of a connecting head 4 is fixedly connected with a co...

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Abstract

The invention relates to the technical field of downhole tools, and discloses a downhole fully-soluble bridge plug. The bridge plug comprises an inner sleeve; the outer surface of the inner sleeve is sleeved with a composite cone; the outer surface of the inner sleeve is sleeved with a combined rubber sleeve located on the inner side of the composite cone; the outer surface of the inner sleeve is sleeved with a connector; the end face of one connector is fixedly connected with a connecting plate; a through hole is formed in the front face of the connecting plate; and a vertical hole is formed in the side face of the connecting plate. According to the downhole fully-soluble bridge plug, the connecting plate is fixed to the end face of one connector, the vertical hole and the through hole are formed in the side face and the front face of the connecting plate respectively, a sinker bar is arranged in the vertical hole in a sleeved mode, a fixing sleeve is installed on the front face of the connecting plate, and a circular plate is movably connected to the inner surface of the fixing sleeve in a sleeved mode; and by impacting the sinker bar, pressure oil in the through hole pushes a cone rod to be ejected outwards, so that the outer end of the cone rod is sleeved in the well wall, the lower end of the cone rod is located in the vertical hole, and auxiliary fixing is achieved.

Description

technical field [0001] The invention relates to the technical field of downhole tools, in particular to a fully soluble bridge plug for downhole. Background technique [0002] The role of the bridge plug is to seal the oil and gas well. It has the characteristics of less construction procedures, short cycle time and accurate sealing position. It is divided into two types: permanent bridge plug and removable bridge plug. It is mainly based on the staged fracturing of the composite bridge plug. After the composite bridge plug is completed, the coiled tubing needs to be drilled and ground. Operating risks such as well falling. [0003] The existing fully soluble bridge plug for downhole, in the process of use, because the soluble bridge plug is pushed to the target position, the impact method is usually used to make the composite vertebral body push the middle composite rubber tube to expand to achieve downhole sealing and fixing, and the actual expansion effect is sealed The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/134E21B23/01
CPCE21B23/01E21B33/134
Inventor 吴帮民
Owner 吴帮民
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