A compressive packer that can be repeatedly set and unsealed
A technology of compression packer and pressure transmission hole, which is applied in the direction of sealing/isolation, wellbore/well valve device, wellbore/well components, etc. It can solve the problems that cannot meet repeated setting and unsealing, and achieve Reduce the number of tripping strings, not easy to block, and save construction time
Active Publication Date: 2020-11-20
SHANDONG DADONGLIAN PETROLEUM EQUIP
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Problems solved by technology
[0003] In order to solve the technical problem that the compression packer in the prior art cannot satisfy repeated setting and unsealing, the present invention provides a compression packer that can be repeatedly set and unsealed
Method used
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[0019] The invention discloses a compression packer which can be repeatedly set and unsealed. Those skilled in the art can learn from the content of this article and appropriately improve parts to realize it. In particular, it should be pointed out that all similar substitutions and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments, and the relevant personnel can obviously make changes or appropriate changes and combinations to the method and application described herein without departing from the content, spirit and scope of the present invention to realize and Apply the technology of the present invention.
[0020] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with specific embodimen...
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The invention relates to a packer and discloses a compressive packer with a repeatable setting and releasing function. A self-locking mechanism of the compressive packer includes a spring circlip, a reversing spring, a limiting pin, a reversing sleeve, a lock block and a circlip seat; the spring circlip fixedly sleeves a rubber barrel sliding sleeve; one end of the reversing spring is fitted to the spring circlip, and the other end of the reversing spring is in contact with the reversing sleeve; the reversing sleeve movably sleeves the rubber barrel sliding sleeve; the limiting pin is passed through the reversing sleeve and is mounted in a slide groove arranged in the rubber barrel sliding sleeve; the lock block is fixedly mounted on the rubber barrel sliding sleeve and matches with a first groove arranged in an outer center tube and a second groove arranged in the circlip seat; the inner wall of an outer barrel is provided with a clamp groove; a circlip is mounted on the circlip seatand may be fastened to the clamp groove. The compressive packer is simple in structure and less difficult to produce, is suitable for repeatable setting and releasing, is suitable for use under high temperature and high pressure for long time, and helps save construction time.
Description
technical field [0001] The invention relates to a packer, in particular to a compression packer which can be repeatedly set and unsealed. Background technique [0002] The downhole packer reduces the water plugging construction process of the oil well packer, can conveniently realize the operation of no snubbing and blowout, and can withstand high pressure in both directions, and has a long service life; It must be done, and at the same time, higher requirements are put forward for the downhole packer. Downhole packers can be divided into self-sealing packers, expandable packers and compression packers, etc. Expandable packers have the advantage of repeatable setting, but have low pressure resistance and no self-locking due to structural constraints Function, and the service life is short under high temperature and high pressure; while the compression packer has high pressure resistance, stable structure, can be set and self-locked, and can be used for a long time under hig...
Claims
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IPC IPC(8): E21B33/122E21B34/08
CPCE21B33/122E21B34/08
Inventor 吴若澄刘戬辛雪凝
Owner SHANDONG DADONGLIAN PETROLEUM EQUIP