a packer

A technology for packers and sealing components, which is applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of complex operation and low efficiency of downhole operation, and achieve the effect of simple operation

Inactive Publication Date: 2018-03-30
陈晓新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a packer to solve the problems existing in the prior art that it is impossible to complete multiple sealing and unsealing actions in one trip of casing or tubing, the operation is complicated, and the downhole operation efficiency is low

Method used

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Embodiment Construction

[0049] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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PUM

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Abstract

The invention provides a packer. The packer comprises a casing coupling or tubing coupling (hereinafter referred to as 'an oil casing coupling') of which the inner wall is provided with a locating groove, a locking structure and a soluble ball, wherein the locking structure comprises the oil casing coupling and a central pipe, and the central pipe penetrates through the oil casing coupling; a locking dog clamped with the locating groove in the oil casing coupling is arranged at the lower part of the oil casing coupling; a recovery coupling is arranged at the lower end of the central pipe; and an arc-shaped groove matched with the soluble ball is formed in the upper end of the central pipe at the upper part. The oil casing coupling is redesigned, the groove (namely the locating groove, wherein the locking structure in the locating groove of the oil casing coupling can realize locating, locking and fixing) is processed, and the locating structure can bear the pressure difference of the top side, the bottom side or the top side and the bottom side in the locating groove, so as to block top-bottom circulation of liquid or gas and ensure ground production and operation and personnel security. According to the packer, multiple packing and unpacking operations can be finished in the oil casing coupling, the operation is simple and the borehole operation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of plugging tools for sealing off lower oil, gas and water layers in mines such as oil wells and gas wells, in particular to a packer. Background technique [0002] The packer is a commonly used equipment in the field of oil drilling, cementing and well completion engineering. It is a safe, reliable, low-cost, fully functional and widely applicable downhole plugging tool. It is used to seal off the circulation between the strings of casing or tubing of various sizes and the wellbore, as well as between the strings of upper and lower casings or tubing, so as to prevent the fluid from flowing up and down, so as to ensure layered water injection, acidizing, pressure Well fracturing and gas lift completion operations can be carried out smoothly. [0003] At present, the packers in the known technology have the following defects in actual use: first, the packer encounters resistance during the running process, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/12
CPCE21B33/1208
Inventor 陈晓新
Owner 陈晓新
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