reliable packer

A packer, a reliable technology, applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc., can solve problems such as poor reliability, inability to construct, misplacement, etc., to prevent misplacement, structure Reasonable, good reliability effects

Active Publication Date: 2016-04-06
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a reliable packer, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problems of existing packers that easily lead to false seating Hanging, poor reliability, and even lead to the failure of subsequent construction problems

Method used

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Embodiment Construction

[0017] The present invention is not limited by the following examples, and specific implementation methods can be determined according to the technical solutions of the present invention and actual conditions.

[0018] In the present invention, for the convenience of description, the description of the relative positional relationship of each component is based on the figure 1 For example, the positional relationship of front, rear, top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the description.

[0019] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0020] as attached figure 1 , 2 As shown, the reliable packer includes a shaft barrel body 1, a retaining sleeve 2, a rubber barrel packing device, a sealing claw sleeve 3, a plunger barrel 4, a plunger shear nail 5, a sealing barrel 6, a rubber barrel shear nail 7 and Anti-unsealing device; there is ...

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Abstract

The invention relates to the technical field of packers used in well cementing and completion operations in oil and gas fields, and is a reliable packer, which includes a shaft barrel body, a retaining sleeve, a rubber sleeve sealing device, a sealing claw sleeve, a plunger barrel, and plunger shear nails , sealing cylinder, rubber cylinder shear nails and anti-unsealing device; there is a convex platform outside the upper part of the shaft cylinder body, and the outside of the shaft cylinder body below the convex platform outside the cylinder body is set with a retaining sleeve and a rubber cylinder seal in sequence from top to bottom. The spacer and the sealing claw sleeve; the lower circumference of the sealing claw sleeve is distributed with no less than two sealing claw pieces at intervals, and the inner and outer sides of the lower part of the sealing claw piece are respectively fixed with an inner claw block and an outer claw block. The structure of the invention is reasonable and compact, which can effectively avoid the interference force of the outside world on the plunger barrel during the process of lowering into the predetermined position, and ensure its pressing effect on the outer claw block, thereby effectively preventing the upward movement of the sealing claw sleeve and the consequent damage. The resulting wrong sitting and hanging has good reliability, so as to avoid adverse effects on subsequent construction.

Description

technical field [0001] The invention relates to the technical field of packers used in well cementing and completion operations in oil and gas fields, and is a reliable packer. Background technique [0002] Well completion is an important technical means to link drilling and oil production operations. At the same time, well completion is an extremely risky downhole operation. Therefore, the success of well completion will directly affect the success or failure of a well. Especially at present, as the exploration of unconventional oil and gas fields such as shale gas and tight oil continues to deepen, people's research on the development of such oil and gas reservoirs is also continuously strengthened. For the development of this type of oil and gas reservoirs, fracturing well completion is also an indispensable technical means. Regardless of whether it is the completion of conventional oil and gas reservoirs or the completion of oil and gas wells in unconventional oil and g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/127
Inventor 李晓军王德国赵继斌王飞跃张辉军
Owner BC P INC CHINA NAT PETROLEUM CORP
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