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Reliable packer

A packer, a reliable technology, applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc., can solve the problems of wrong setting, failure of construction, poor reliability, etc., and achieve reasonable structure and good reliability , Prevent the effect of sitting and hanging by mistake

Active Publication Date: 2013-12-25
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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  • Reliable packer

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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 description attached to the description. 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 nai...

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Abstract

The invention relates to the technical field of packers used in oil and gas field well cementing and completion operation, in particular to a reliable packer. The reliable packer comprises a shaft barrel body, a retaining sleeve, a rubber barrel packing device, a sealing collet, a plunger barrel, a plunger shear pin, a sealing barrel, a rubber barrel shear pin and an anti-unblock device, wherein a barrel outer boss is arranged on the outer side of the upper part of the shaft barrel body; the retaining sleeve, the rubber barrel packing device and the sealing collet are sleeved outside the shaft barrel body below the barrel outer boss from top to bottom in sequence; not less than two sealing claw sheets are distributed on the circumference of the lower part of the sealing collet at an interval; an inner claw block and an outer claw block are fixedly arranged on the inner side and the outer side of the lower part of each sealing claw sheet respectively. The reliable packer has a rational and compact structure, the interference acting force of the exterior to the plunger barrel during descending to a predetermined position can be effectively avoided, and a pressing effect of the packer on the outer claw blocks is guaranteed, so that the ascending of the sealing collet and mistaken setting caused thereby are effectively prevented, and the packer has good reliability to avoid the adverse effect on the 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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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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