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Anti-erosion high-temperature high-pressure packer

A high-temperature, high-pressure, packer technology, which is applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc., can solve problems such as breakdown and rubber tube tearing, and achieve simple structure and large displacement Effect of construction and reliable sealing

Active Publication Date: 2019-02-19
CNPC BOHAI DRILLING ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the condition of high temperature and high pressure, the shoulder of the rubber sleeve is easy to protrude and increase, and there is always an annular space between the packer body and the casing. Forcing the annular space to squeeze and move, and then the phenomenon of tearing and breakdown of the rubber tube

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments in no way limit the present invention.

[0021] An erosion-resistant high-temperature and high-pressure packer, such as figure 1 As shown, it includes an anchoring mechanism arranged on the upper part of the central tube 19, a sealing mechanism sleeved on the central tube 19, and a seating / unsealing mechanism arranged at the bottom of the central tube 19;

[0022] The anchoring mechanism includes a hydraulic anchor 1 and an anti-scour tube 2 arranged inside the hydraulic anchor 1; the lower part of the anti-scour tube 2 presses against the top of the central tube 19;

[0023] The sealing mechanism includes the rubber cartridge adjustment ring 3 and the alloy protection ring-upper 4 which is set on the center tube from top to bottom, the rubber cartridge positioning ring-upper 5, the supporting rubber cartridge-upper ...

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Abstract

The invention discloses an anti-erosion high-temperature high-pressure packer. The anti-erosion high-temperature high-pressure packer comprises an anchoring mechanism arranged on the upper part of a central tube, a sealing mechanism sleeving on the central tube and a setting sealing / unsealing mechanism arranged at the bottom of the central tube. The anti-erosion high-temperature high-pressure packer has a simple structure, can realize setting sealing control, setting sealing lock and unsealing control, can further realize large displacement construction and reliable sealing, and enables protective devices at both ends of a sealant cylinder to be close to a well wall as far as possible under the setting sealing state.

Description

technical field [0001] The invention relates to the technical field of oil well fracturing construction, in particular to an erosion-resistant high-temperature and high-pressure packer. Background technique [0002] With the continuous deepening of exploration and development, the exploration and development targets are gradually shifting from conventional oil and gas reservoirs to unconventional oil and gas reservoirs, and the target layer is rapidly extending from medium and shallow layers to deep layers and even ultra-deep layers. Breakthroughs, finding and expanding the oil and gas scope and fields of oilfields have become the main means to successfully achieve the goal of China's oil and gas resources replacement. In recent years, the replacement capacity of oil and gas resources in western my country has gradually increased, mainly distributed in Tarim, Zhungeer, Turpan-Hami Basin, Qinghai, Yumen and other areas in Xinjiang, most of which are buried within 5,000 meters...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/127
CPCE21B33/127
Inventor 王学正冯强丁柯宇王治华刘志斌骆劲羽詹鸿运张鹏张镇秦诗涛郭鸣
Owner CNPC BOHAI DRILLING ENG
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