A rubber cartridge assembly for a packer

A technology of packer and rubber cartridge, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc. It can solve the problem of shoulder structure damage, packer setting failure, and downhole annulus loss of sealing effect and other issues, to achieve good structural strength and ductility, enhance long-term performance and sealing performance, and enhance the effect of protection
CN109138903BActive Publication Date: 2021-07-30CHINA PETROCHEMICAL CORP +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROCHEMICAL CORP
Publication Date
2021-07-30

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Abstract

The invention discloses a rubber cartridge assembly for a packer, comprising a rubber cartridge body, the rubber cartridge body is axially sleeved on a central pipe string of a packer, and the central pipe string at the upper end of the rubber cylinder body is sleeved on There is an upper rubber cylinder seat, and a lower rubber cylinder seat is set on the central pipe column at the lower end; the upper end of the rubber cylinder body is fitted with an upper protective bowl with the bowl mouth facing down, and the bowl-shaped contour of the upper protective bowl matches the rubber cylinder The upper end of the rubber cylinder body is matched with the upper rubber cylinder seat on the central column through the upper protective bowl; The bowl-shaped profile of the bowl matches the lower end profile of the rubber cylinder body, and the lower end of the rubber cylinder body corresponds to the lower rubber cylinder seat on the central pipe column through the lower protection bowl. The invention can realize the long-term service of the rubber cylinder body, ensure the high sealing performance of the setting seal, can withstand higher ambient temperature and pressure, and can adapt to the mining requirements of various well conditions including deep wells and ultra-deep wells.
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Description

technical field

[0001] The invention relates to a packer used in oil and gas well development, in particular to a rubber cartridge assembly for the packer. Background technique

[0002] As an important downhole tool used in oil and gas well development, the packer is used to isolate the annular space between the central pipe string and the wellbore, and between the pipe string, so as to isolate the production layer and realize the control of production (injection) fluid. The packer is mainly composed of a central pipe string, a rubber sleeve assembly and a slip assembly set on the central pipe string, etc. During construction, the rubber sleeve assembly of the packer is responsible for setting the corresponding annular space in the well. The reliability of setting seals directly affects the development of subsequent oil and gas extraction construction operations. It can be seen that the rubber cartridge assembly is one of the important core components of the packer. [000...

Claims

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