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Novel active hydraulic control packer

A packer and hydraulic control technology, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc., can solve the problems of complex structure, inability to be reused repeatedly, poor modularization, etc., and meet the structural requirements Effects of compactness, shortened working time, and low manufacturing cost

Active Publication Date: 2016-08-31
MUDANJIANG XINXIANG PETROLEUM MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to propose a new type of active hydraulic control packer, which includes multi-cylinder Combined drive module, pump valve integration module, mandrel oil channel and vacuum chamber settings, etc., thereby reducing the complexity of the packer and improving the reliability of the system

Method used

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 and figure 2 As shown, a new type of active hydraulic control packer includes a fixed mandrel 9, on which an upper joint 1 and a lower joint 4 are sheathed, one end of the upper joint 1 and one end of the lower joint 4 are in close contact and the upper The outer side of the joint 1 and the lower joint 4 is threaded through the sleeve ring 3, and the inner side of the upper joint 1 and the lower joint 4 is threaded with the mandrel 9 through the balance sleeve 2; the mandrel 9 is also provided with a connecting block 5, the connecting block One end of 5 is threadedly connected with the other end of lower joint 4, and connecting block 5 is threadedly connected with mandrel 9.

[0032] The mandrel 9 is also sequentially provided with a push hydraulic cylinder 8 , an action hydraulic cylinder 10 and a power hyd...

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Abstract

The invention discloses a novel active hydraulic control packer. A push hydraulic cylinder, an action hydraulic cylinder and a power hydraulic cylinder which are in threaded connection with one another are arranged on a core shaft in sequence; the oil supply end of an axial plunger pump communicates to a right cavity of the power hydraulic cylinder; an oil path I, an oil path II, an oil path III and an oil path IV are formed in the core shaft; electronic valves controlled by a controller to be opened and closed are respectively arranged on the four oil paths; the left cavity of the power hydraulic cylinder communicates to the left cavity of the action hydraulic cylinder through the oil path I; the right cavity of the action hydraulic cylinder communicates to the vacuum cavity of the push hydraulic cylinder through the oil path II; the left cavity of the power hydraulic cylinder communicates to the right cavity of the action hydraulic cylinder through the oil path III; the left cavity of the action hydraulic cylinder communicates to the vacuum cavity of the push hydraulic cylinder through the oil path IV. The novel active hydraulic control packer comprises a multi-cylinder combination driving module, a pump valve integration module, a core shaft oil path channel, a vacuum cavity setting and the like, so that the complexity of the packer is reduced, and the reliability of a system is improved.

Description

technical field [0001] The invention relates to a downhole oil layer protection packer, in particular to an active hydraulic control packer capable of isolating the production layer of the oil pipe string and protecting the casing under the harsh working environment of high temperature and high pressure in oil production engineering . Background technique [0002] The packer is a downhole tool that separates different oil layers and water layers in the wellbore and withstands a certain pressure difference. It satisfies the requirements of the oil production process, and can be lowered to the predetermined position of the wellbore, tightly sealed, and durable in the downhole. [0003] Due to the current lack of oil resources, the depth of oil extraction is gradually deepening, which makes the difficulty of extraction increase, and the mining environment is getting worse and worse, so the technical requirements for the structure and performance of the packer are getting highe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/126
CPCE21B33/126
Inventor 李阁强顾永升王帅郭冰菁李跃松赵书尚牛彦杰刘威张龙飞祖晓玲何社阳张福寿
Owner MUDANJIANG XINXIANG PETROLEUM MASCH CO LTD
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