Multi-functional flap anchor

A flap anchor, multi-functional technology, applied in the field of multi-functional flap anchor, oilfield well tools, downhole pipe string, can solve the problems of difficult fishing, no sealing effect, complex pipe string structure, etc., to reduce construction work The degree of complexity, the effect of improving the production effect of a single well, and the effect of streamlining the string structure
CN104453758AActive Publication Date: 2015-03-25PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2015-03-25

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Abstract

The invention provides a multi-functional flap anchor. The anchor comprises a central pipe, wherein both ends of the central pipe are respectively connected with an upper contact and a lower contact, an anchor sheet component is arranged between the upper contact and the end part of the central pipe, one side of the anchor sheet component is rotationally connected with the end part of the central pipe through a connector in a circumferential direction, the lower end of the lower contact is connected with a scraping component, a rubber tube sealing component, a slip component and a slip sliding driving component successively and movably sleeve the central pipe between the connector and the lower contact from top to bottom, and the reciprocating sliding of the slip sliding driving component on the central pipe successively drives the slip component to be used for clamping sealing and unsealing of the slip component, and the sealing and unsealing of the rubber tube sealing component. According to the invention, the functions of creep prevention, sealing, deflection resisting, and scraping pipes under a well are realized, the structure of a pipe column is simplified, the complex degree of construction operation is reduced, the service efficiency of the flap anchor is improved, and further the exploitation effect of individual wells is improved.
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Description

technical field

[0001] The invention relates to a tool for oilfield wells, in particular to a multifunctional flap anchor, which is used for anchoring downhole pipe strings, and belongs to the field of oil exploitation. Background technique

[0002] Currently, downhole pipe strings are anchored by connecting flap anchors to prevent pipe string misalignment. However, due to the influence of its structure, the existing flap anchors do not have the sealing effect. For deep well negative pressure lifting pipe strings and deep well gas (water) injection pipe strings, etc., they need to be used with packers, resulting in The structure is more complicated. In addition, once the existing flap anchor breaks down in the well, because there is only a rotational force between the anchor body and the wellbore, there is no support in the longitudinal direction, so the flap anchor is easy to fall to the bottom of the well, making fishing difficult. Contents of the invention

[0003] Th...

Claims

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