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Dual-electric pump cable penetrating packer

A technology of packer and electric pump, which is used in sealing/packing, wellbore/well components, earth-moving drilling, etc. and other problems, to achieve the effect of strong pressure resistance and good sealing

Inactive Publication Date: 2016-03-16
DONGYING FLUID SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art above, the present invention provides a double electric pump cable passing packer to solve the problems that the cable passing packer is not easy to unseal, has poor sealing performance and low pressure resistance

Method used

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  • Dual-electric pump cable penetrating packer
  • Dual-electric pump cable penetrating packer

Examples

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Embodiment Construction

[0014] like figure 1 , figure 2 As shown, the double electric pump cable passes through the packer, including: main joint 1, piston 3, internal sliding cap 4, snap ring 5, spring 6, internal sliding block 7, sliding block cover 8, rubber tube 9, Upper cone 11, slips 13, lower cone 15, slip cover 16, mandrel 17, hydraulic anchor 20; where:

[0015] The lower part of the main joint 1 is a ladder structure, with a main operating pipe hole 21, a vent valve hole 22, a first group of cable holes 23, a reserved hole 24, a control line hole 25, and a second group of cable holes 26; The first group of cable holes 23 and the second group of cable holes 26 are used for the six cables of the double electric pump to pass through respectively. A single cable has good sealing effect and high pressure resistance performance, which can reach up to 70MPa.

[0016] The first group of cable holes 23, the reserved holes 24, the control hole 25, and the second group of cable holes 26 have the sa...

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Abstract

The invention relates to the field of oil exploration and development and particularly relates to an oil extraction underground working tool, more particularly a dual-electric pump cable penetrating packer. The dual-electric pump cable penetrating packer comprises a main joint. The lower part of the main joint is of a stepped structure and is composed of a main operation pipe hole, a deflation valve hole, a first set of cable holes, a reserved hole, a control line hole and a second set of cable holes. Six cables can penetrate the first set of cable holes and the second set of cable holes respectively. Compared with the prior art, the entire mechanism of the dual-electric pump cable penetrating packer is symmetrically distributed, thus being convenient to be opened again. The dual-electric pump cable penetrating packer can be re-opened only through directly pulling up a string shear pin without the need of any other operation. Meanwhile, all cable holes are substantially the same in size and the centers of the cable holes are distributed in the same circle. In this way, the inner diameter of a mandrel can be maximized, so that the mandrel can be connected with an oil pipe of a larger inner diameter. A multi-aperture penetrating body is used for the penetration of dual-electric pump six cables respectively, thus being good in sealing performance and strong in pressure resistance. The highest pressure can reach 70 MPa.

Description

technical field [0001] The invention belongs to the field of petroleum exploration and development, and in particular relates to an oil exploitation downhole operation tool, in particular to a double electric pump cable penetration packer. Background technique [0002] In the process of oil production, in order to prevent blowout accidents, an oil casing annulus isolation tool is usually used on the electric submersible pump oil production string. Out of the wellbore through the casing annulus. The oil jacket annulus isolation tool must have production passages, exhaust passages, cable passages and reserved passages for small pipelines to pass through the oil jacket annulus. [0003] Chinese invention patent CN101845943A provides a cable universal packer. This structure only passes a single set of cables, and the entire packer is eccentric, which is not easy to unpack. Chinese invention patent CN102758597A provides a split six-channel cable-passing packer. This structure i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/12
CPCE21B33/12
Inventor 王威刘淑静马庆兰刘均荣刘国斌焦青青栾志军赵飞飞
Owner DONGYING FLUID SCI & TECH
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