Packer
A technology of packer and sealing groove, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of short service life of packer and low success rate of unsealing
Active Publication Date: 2020-07-07
PETROCHINA CO LTD +1
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Problems solved by technology
[0006] The embodiment of the present invention provides a packer to solve the problems of short service life and low unsealing success rate of packers in the related art
Method used
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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0032] The embodiment of the present invention provides a packer, see figure 1 , the packer includes a mandrel 1, a first sliding sleeve 2, a second sliding sleeve 3, a rubber cartridge 4, a first pin 5 and a second pin 6;
[0033] Wherein, the interior of the mandrel 1 is a cavity, and the mandrel 1 is coaxially inserted into the first sliding sleeve 2 and the second sliding sleeve 3, and the outer diameter of the first end of the mandrel 1 is smaller than the outer diameter of the second end of the mandrel 1. The outer wall of the first end of the mandrel 1 has an elastic convex ring 11, and the side wall of the first end of the mandrel 1 has a first pressure transmission hole 12 running through the inner and outer walls;
[0034] O...
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The invention discloses a packer, and belongs to the field of oil exploitation. The packer comprises a mandrel coaxially inserted into a first sliding sleeve and a second sliding sleeve, an elastic convex ring located on the outer wall of the first end of the mandrel, a first pressure transmission hole penetrating through the inner wall and the outer wall of the first end of the mandrel, a rubbersleeve groove communicating with an inner cavity inside the mandrel through a second pressure transmission hole, a second sliding sleeve groove communicating with the inner cavity inside the mandrel through a third pressure transmission hole, a rubber sleeve located in the rubber sleeve groove, a first pin used for connecting the first sliding sleeve with the mandrel, and a second pin used for connecting the second sliding sleeve with the mandrel. According to the packer, in the well entering process, the rubber sleeve is protected through the first sliding sleeve covering the outer part of the rubber sleeve, in the setting process, the first sliding sleeve is controlled to slide so that the rubber sleeve can be exposed and swelled, and during releasing, the second sliding sleeve is controlled to slide and cover the rubber sleeve; and a covering type protection mode is adopted to protect the rubber sleeve, so that the service life of the packer is prolonged, the success rate of settingand releasing of the packer is increased, and the operation range of the packer is widened.
Description
technical field [0001] The invention relates to the field of oil exploitation, in particular to a packer. Background technique [0002] In the process of oil field exploitation, it is often necessary to use packers to separate production layers, so as to facilitate construction operations such as formation testing and layered water injection. A packer is a downhole operation tool that uses elastic sealing elements to separate the annular space into two different production zones, the upper and the lower. The annular space can be the annular space formed by the drill pipe and the open hole wall, or it can be formed by the tubing and the The annular space formed by the casing. [0003] The related art provides a packer, which includes a cylinder body with a cavity inside and a rubber cartridge. Wherein, the outer wall of the barrel body has a rubber barrel groove, the glue barrel groove communicates with the cavity inside the barrel body through the pressure transmission hol...
Claims
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IPC IPC(8): E21B33/127E21B33/126
CPCE21B33/127E21B33/126
Inventor 郭秀庭宁坤强华任世举翁博王军恒朱恩永
Owner PETROCHINA CO LTD