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A kind of sealing anchoring member for casing subsidy and its installation device

An installation device and casing subsidy technology, applied in the direction of wellbore/well components, earthwork drilling and production, etc., can solve the problems of unsealable small concave-convex surface of casing inner surface, unstable sealing pressure bearing performance, etc., and achieve good shape and surface The effect of smoothness requirements, improved sealing pressure bearing capacity, and good elastic deformation performance

Active Publication Date: 2017-02-22
NORTH SCHLUMBERGER OILFIELD TECH XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the present invention solves the problem of unstable pressure bearing performance of the existing metal sealing ring after subsidy reinforcement and the inability to seal the small concave-convex surface of the inner surface of the casing, and proposes a sealing for casing subsidy. Anchor member and installation device thereof

Method used

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  • A kind of sealing anchoring member for casing subsidy and its installation device
  • A kind of sealing anchoring member for casing subsidy and its installation device
  • A kind of sealing anchoring member for casing subsidy and its installation device

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1: sealing and anchoring member

[0043] combine figure 1 , the sealing and anchoring member of the present embodiment comprises subsidizing pipe 9 and the anchor mechanism that is welded on two ends of subsidizing pipe, and anchor mechanism comprises first anchor mechanism 91 and second anchor mechanism 92, and first anchor mechanism 91 and the second anchor mechanism The two anchoring mechanisms 92 have the same structure, and the first anchoring mechanism 91 and the second anchoring mechanism 92 are relatively coaxially fixed at the two ends of the subsidizing pipe 9; the anchoring mechanism includes a closed metal anchor 96, a metal sealing ring 95 , the retaining ring 94, the rubber sealing ring 93 vulcanized in the groove of the mouth of the metal anchor 96;

[0044] The non-closed end of the closed metal anchor 96 is butt-welded with the subsidy pipe 9, and the retaining ring 94 at the closed end is installed on the closed metal anchor 96 by threads, ...

Embodiment 2

[0046] Embodiment 2: The installation device of the sealing and anchoring member described in Embodiment 1

[0047] combine figure 1 , 2 , 3, 4, 5 and 6, the installation device of the present embodiment includes a power unit, a first taper sleeve installation device and a second taper sleeve installation device, wherein:

[0048] The first taper sleeve installation device includes lock pin 5, guide cone seat locking sleeve 6, guide cone 7, guide cone seat 8 and upper taper sleeve 12, the lower end of guide cone seat locking sleeve 6 fits with the upper end of guide cone 7 Fixed connection, the upper end of the guide cone seat locking sleeve 6 is provided with a lock pin 5, the lock pin 5 locks the guide cone seat 8 on the inner circumference of the guide cone seat locking sleeve 6, the guide cone seat 8 can limit the radial direction of the guide cone 7 condensation, the upper taper sleeve 12 fits on the outer periphery of the guide cone 7;

[0049] The guide cone seat 8 i...

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Abstract

The invention relates to a sealing anchoring member for casing patching and mounting device thereof. The member comprises a repairing pipe and an anchoring mechanism. The anchoring mechanism comprises a rubber seal ring, a retainer ring, a metal seal ring and a necked metal anchor, the rubber seal ring, the retainer ring and the metal seal ring sequentially sleeve a neck of the necked metal anchor along an axial direction far from the neck of the necked metal anchor, the non-necked portion of the necked metal anchor is coaxially and fixedly connected with a repairing pipe. The sealing anchoring member for drive pipe repairing mainly solves the problems of sealing and pressure bearing after patching in the conditions of elliptical drive pipes, corrosion of drive pipes' surface and mechanical scratch of drive pipe surface. The sealing anchoring member and installation device have the advantages of preventing the rubber seal ring from being damaged by scratching of the wall of a well during the process of being descended to the well.

Description

technical field [0001] The invention belongs to the field of oilfield machinery and equipment, and relates to a casing damage reinforcement device used in the workover in the field of oil production, in particular to a sealing and anchoring component for casing subsidy and an installation device thereof. Background technique [0002] In the process of oilfield development and production, with the increase of production time, various geological factors and artificial measures will have different degrees of influence on downhole metal casings. Timely and effective plugging and reinforcement of damaged casings is the key to ensuring the continuous development of oilfields. and important measures of production. [0003] In the past, the subsidized pipe was used to seal and strengthen the casing. Soft metal was used as the sealing filling material, and the soft metal was filled between the annular space between the casing and the subsidized pipe by extrusion to play a role of sea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B29/10
CPCE21B29/10
Inventor 袁文豪王宝兴袁铁刚汪长栓雷卫国李森元刘士军张守华艾教银姚元文顾忠华刘雁安谢明召
Owner NORTH SCHLUMBERGER OILFIELD TECH XIAN
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