Hydraulic releasing packer preventing midway setting and method

A packer and drop-off technology, applied in sealing/package, earthwork drilling, wellbore/well components, etc., to achieve reliable drop-off, reliability, and drop-off effects

Pending Publication Date: 2020-04-28
SHANDONG BOSAITE PETROLEUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous development of oil reservoirs, the development of low-grade oil reservoirs has put forward higher requirements for this type of packer. It is required that the tool not only has reliable setting and sealing, b...

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  • Hydraulic releasing packer preventing midway setting and method
  • Hydraulic releasing packer preventing midway setting and method
  • Hydraulic releasing packer preventing midway setting and method

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Embodiment Construction

[0035] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0036] Refer to attached Figure 1-10 , The anti-midway setting hydraulic drop packer of the present invention includes a drop part (1) and a well retention part (2).

[0037] The upper end of the upper joint (101) of the hands-off part (1) is provided with pipe threads, and the connecting ring (103) and the guide ring (102) are sequentially set on the upper part of the upper joint (101) from bottom to top, and the guide ring ( 102) It is fixedly connected with the upper joint (101) through threads, and the primary piston (107) is sealed and sleeved on the upper part of the upper center pipe (105) through the second sealing "O" ring (108), and the upper center pipe ...

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Abstract

The invention relates to a hydraulic releasing packer preventing midway setting and a method. According to the technical scheme of the hydraulic releasing packer preventing midway setting, a releasingportion and a stay-well portion are included, and the lower portion of the releasing portion is sleeved with the stay-well portion, and connecting into a whole is achieved through a releasing ring and a center pipe; a releasing thread of the releasing ring is a left hand thread; the exterior of a pressure relief pipe and an inner hole of the center pipe are in sliding seal fit with each other through a sealing O ring; and a lock block and a step hole are in limiting cooperation connection. The hydraulic releasing packer preventing midway setting has the beneficial effects that firstly, an elastic sleeve mechanical self-locking midway setting preventing mechanism solves the midway setting problem caused by the mechanical force; secondly, a double-stage starting pin improves the capacity ofresisting hydraulic pressure causing midway setting; thirdly, a pressure relief pipe sliding seal mechanism achieves oil sleeve annulus hydraulic examining seal; and fourthly, a mechanical back off and hydraulic double releasing mechanism guarantees reliable releasing, the measure reliability is guaranteed from tripping in of the packer to completing of the whole function, the measure success rate of the packer is increased, and the low-grade reservoir development benefits are improved.

Description

technical field [0001] The invention relates to an oil field exploitation equipment and method, in particular to an anti-midway setting hydraulic drop-off packer and method. Background technique [0002] In the process of oil field development, packers are widely used in water injection, oil production, fracturing and acidizing, and Y445 series packers are the most widely used ones. With the continuous development of oil reservoirs, the development of low-grade oil reservoirs has put forward higher requirements for this type of packer. It is required that the tool not only has reliable setting and sealing, but also can be run smoothly under various complex conditions during the running process, and It has the function of casing pressing and sealing inspection. At present, there is no Y445 packer with the above-mentioned performance characteristics. Contents of the invention [0003] The object of the present invention is to aim at the above-mentioned defects existing in t...

Claims

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Application Information

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IPC IPC(8): E21B33/128E21B33/1295E21B23/04
CPCE21B23/04E21B33/1285E21B33/1295
Inventor 李江涛李海波吕凯任岩岩
Owner SHANDONG BOSAITE PETROLEUM TECH CO LTD
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