Packer fixing ring and oil/water self-expandable packer with same

Abstract

The invention relates to a packer fixing ring and a self-expandable packer with the same. The fixing ring is used for fixing the self-expandable packer sleeved on a base tube, and the packer is self-expandable in oil or water so as to seal a space to be sealed; the packer fixing ring comprises a main body part and a fixing part, wherein the main body part is used for being sleeved on the base tube; the fixing part is at least arranged at one end of the main body part and is used for being sleeved at the end part of the packer so as to fix the end part; and the length of the fixing part along an axial direction is equal to the length of the end part of the packer, that is to say, the length of the fixing part along the axial direction is larger than or equal to 1 / 2 of the maximum radial dimension between the outer wall of the packer and the space to be sealed. The packer comprises a main body part, a tapered section arranged at one end of the main body part, and a linear section arranged at a free end of the tapered section. By means of the packer fixing ring and the self-expandable packer with the same, provided by the invention, liquid leakage caused by a hollow phenomenon between the packer and the base tube and the influence of the packer fixing ring on the radial expansion of the packer when the packer fixing ring is used for fixing the end part of the packer in the prior art are eliminated.

Description

technical field [0001] The invention relates to a packer fixing ring and a self-expanding packer having the fixing ring in case of oil and water. Background technique [0002] When crude oil is extracted, the wellbore will seep oil or water through layers, fractures or crevices of different permeability; in view of this situation of undesired oil seepage or water seepage in different layers, sand control is usually laid on the wellbore Screening to shut off a reservoir is an easy and reliable way to complete a well. But a well often passes through rock formations changing the production characteristics, and despite the fact that the sand control screen forms a seal on the inside, there will still be undesired well fluid flowing into the reservoir through the outside. Therefore, there is a need to contain or shut off those reservoirs that do not produce the desired well fluids. This requires enclosing the outer annular area. [0003] At present, the above-mentioned sealing...

AI Technical Summary

Problems solved by technology

Although the end ring can prevent liquid from flowing between the annular packer 1 and the main body 2, since the part of the packer 1 that is not buckled will expand freely and the part that is buckled cannot expand, the final result is the expanded material is torn apart

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