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Anti-jamming hydraulic anchor used in oil field producing well

A production well, anti-jamming technology, applied in wellbore/well components, earth-moving drilling, etc., can solve problems such as increased risk, unrecoverable anchor jaws, stuck well, etc., to reduce contact stress and avoid stuck well accidents Effect

Pending Publication Date: 2021-06-15
CHINA PETROCHEMICAL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this invention overcomes the problem that the anchor fluke cannot be recovered freely due to the sand stuck, in the process of use, the invention still has the problem that the anchor fluke is stuck in the fluke groove and cannot be recovered, which leads to well jamming accidents and increases the The risk of another overhaul operation increases the time for unblocking and workover when operating again, resulting in a waste of operating costs.

Method used

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  • Anti-jamming hydraulic anchor used in oil field producing well
  • Anti-jamming hydraulic anchor used in oil field producing well
  • Anti-jamming hydraulic anchor used in oil field producing well

Examples

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Embodiment Construction

[0021] The examples given below are specific descriptions of the present invention, and it is necessary to point out that the following examples are only used to further illustrate the present invention, and cannot be interpreted as limiting the protection scope of the present invention.

[0022] In the present invention, the descriptions referring to "first", "second", "third", "fourth", etc. are for descriptive purposes only, and should not be understood as indicating or implying their relative importance or implying the indicated The number of technical characteristics. Thus, a feature defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0023] In order to clearly illustrate the inventive concept of the present invention, the problems found in the present invention are described first.

[0024] Aiming at the problem that the existing hydraulic anchors have overcome the problem that the flukes cannot be rec...

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Abstract

The invention discloses an anti-jamming hydraulic anchor used in an oil field producing well. The anti-jamming hydraulic anchor comprises an anchor body, anchor holes and anchor flukes, wherein the anchor holes is formed in the circumferential direction of the anchor body, the anchor flukes are installed in the anchor holes, and the corner angles of the hole openings of the anchor holes are first round corners. According to the anti-jamming hydraulic anchor, the stress areas between the anchor flukes and the hole openings of the anchor holes can be correspondingly increased through the first round corners, the contact stress in the contact positions between the anchor flukes and the hole openings of the anchor holes can be reduced, and the hole openings of the anchor holes and the anchor flukes cannot be deformed or scratched, so that the condition that the anchor flukes and the anchor holes are blocked due to the contact stress is avoided, and well blocking accidents are avoided.

Description

technical field [0001] The invention relates to downhole tools, in particular to hydraulic anchors used for anti-jamming in production wells of oil fields. Background technique [0002] The hydraulic anchor is a downhole tool in the production well of the oil field. It is generally composed of a hydraulic anchor body and an anchor claw nested in it. The anchor claw is also called "slip", which is used for hydraulic fracturing of oil (gas) wells and water well injection reconstruction. , hydraulic sandblasting, cutting (or sandblasting and perforating) and other downhole operation string anchoring. There is a pressure plate groove and a spring hole inside the anchor claw, and after the spring is installed, the anchor claw is pressed on the hydraulic anchor body with a spring pressure plate and a pressure plate screw. When the hydraulic anchor is working, the pressure in the conduit is suppressed, and then the pressure is suppressed in the hydraulic anchor pipe. The flukes un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B23/01
CPCE21B23/01
Inventor 何世云李晖任俊松周天春张朝举曹学军颜磊龙学吕占春杨桢陈科李钦赵文雯傅伟唐祖兵罗斌杨庆辉
Owner CHINA PETROCHEMICAL CORP
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