Multifunctional bushing self-sealing repair and connection device

A self-sealing and multi-functional technology, applied in wellbore/well components, earth-moving drilling, etc., can solve the problems of poor pressure resistance at the sealing part, low service life of the repair joint, and high repair cost, and achieve low manufacturing cost, The effect of prolonging the service life and improving the strength of the patch

Inactive Publication Date: 2014-03-19
JIANGSU JUNXINYI GASOLINEEUM MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The repairing method in the prior art is to use special equipment to subsidize a new section of repairing pipe on the inner wall of the damaged casing. The disadvantage is that it needs to import special equipment, the operation is complicated, the repair cost is high, and the inner diameter of the damaged casing becomes smaller. Other tools running into the well are obstructed, and there is poor pressure resistance at the sealing part, and the service life of the patching part is low

Method used

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  • Multifunctional bushing self-sealing repair and connection device
  • Multifunctional bushing self-sealing repair and connection device
  • Multifunctional bushing self-sealing repair and connection device

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the multi-functional casing self-sealing adapter includes a grabbing assembly and a sealing assembly, and the grabbing assembly includes an upper joint 1, a guide shoe 15, and a pair of boots sequentially arranged between the upper joint 1 and the guide shoe 15. The outer cylinder 3, the connecting cylinder 13, and the slip 4 connected inside the outer cylinder 3, the positioning key 5 on the inner wall of the outer cylinder 3 is stuck in the groove of the slip 4, and the connecting cylinder 13 and the A milling ring 14 is provided at the joint of the guide shoe 15, wherein the slips and the outer cylinder are matched with the inner and outer tapers, and the positioning keys on the inner wall of the outer cylinder are used to be stuck in the slots of the slips, the purpose of which is to ...

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Abstract

The invention relates to the technical field of oil filed oil well repair tools and particularly relates to a multifunctional bushing self-sealing repair and connection device. The repair and connection device comprises a grappling component and a sealing component. The grappling component comprises an upper joint, a guiding shoe, an outer cylinder and a connection cylinder which are arranged between the upper joint and the guiding shoe successively and a slip connected internally with the outer cylinder. Locating keys on the inner wall of the outer cylinder are snapped in grooves of the slip, and a milling ring is arranged at the connection position of the connection cylinder and the guiding shoe. According to the device, the structure is used, so that the inner drift diameter is kept unchanged; meanwhile, the primary seal is achieved through lead rings, and the secondary seal is achieved through cementing well cementation, so that the device is good in seal performance, convenient to operate and use and capable of effectively improving the repair and connection strength and prolonging the service life. Besides, the device has the advantages of being reasonable in design, simple in structure, low in manufacture cost and the like.

Description

technical field [0001] The invention relates to the technical field of oil well repairing tools, in particular to a multifunctional casing self-sealing patching device. Background technique [0002] Nowadays, due to the downhole corrosion environment, the inner casing of the oil well often suffers from pipe wall damage. The repair method in the prior art is to use special equipment to subsidize a new section of repair pipe on the inner wall of the damaged casing. The disadvantage is that it needs to import special equipment, the operation is complicated, the repair cost is high, and the inner diameter of the damaged casing becomes smaller. Other tools that go into the well are blocked, and there is poor pressure resistance at the seal, and the service life of the joint is low. Contents of the invention [0003] The purpose of the present invention is to provide a multi-functional bushing self-sealing patching device with reasonable design, simple structure, convenient use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/10
Inventor 傅卜冬吴月琴王惠
Owner JIANGSU JUNXINYI GASOLINEEUM MACHINERY
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