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Double Cylinder Packing Device

A technology of packing device and hydraulic cylinder, which is used in sealing/packing, wellbore/well components, earth-moving drilling, etc. , to ensure effective implementation, reasonable structure and compact effect

Active Publication Date: 2016-06-01
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 dual-cylinder packing device, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem that existing packers are prone to errors. Problems with hanging and setting failures

Method used

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  • Double Cylinder Packing Device

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Embodiment Construction

[0016] 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.

[0017] 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 top, bottom, left, right, etc. is determined according to the layout direction of the drawings in the specification.

[0018] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0019] as attached figure 1 , 2 As shown, the double-hydraulic cylinder isolation device includes a body 1, an upper cylinder liner 22, a double male seal sleeve, a lower cylinder liner 4 and a rubber cartridge assembly; an upper cylinder liner 22 is fixedly installed on the upper ou...

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Abstract

The invention relates to the technical field of packing-off devices in oil-gas field well-completion operation, in particular to a double-hydraulic-cylinder packing-off device. The double-hydraulic-cylinder packing-off device comprises a body, an upper cylinder sleeve, a double-cylinder sealing sleeve, a lower cylinder sleeve and a rubber barrel assembly. The upper cylinder sleeve is fixedly installed on the upper-portion outer wall of the body, an inverted-tooth mechanism for preventing the upper cylinder sleeve from descending and then ascending is arranged on the upper cylinder sleeve, the double-cylinder sealing sleeve is installed on the middle outer wall of the body, a sealing sleeve outer annular table is fixed on the middle outer wall of the double-cylinder sealing sleeve, the lower end of the upper cylinder sleeve is fixedly installed with the upper-portion outer wall of the sealing sleeve outer annular table, and the lower cylinder sleeve is fixedly installed on the middle outer wall of the body. The double-hydraulic-cylinder packing-off device is reasonable and compact in structure and convenient to use, a setting part of the double-hydraulic-cylinder packing-off device is driven by keeping down pressure of double cylinders on the ground, the mistaken setting situation can be ensured to be avoided in the in-well packing-off operation process, down-hole operation is safe and reliable, and accordingly effective implementation of down-hole well-completion operation is ensured.

Description

technical field [0001] The invention relates to the technical field of isolation devices in well completion operations in oil and gas fields, and relates to a double-hydraulic cylinder isolation device. 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 i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/126
Inventor 穆总结李晓军左霞陈亮叶承庆
Owner BC P INC CHINA NAT PETROLEUM CORP
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