Title:
COMPOUND LINING APPARATUS FOR PIPELINE
Document Type and Number:
WIPO Patent Application WO/2021/026749
Kind Code:
A1
Abstract:
A compound lining apparatus for a pipeline, comprising a cylindrical body (2), a directing head (3), a control connector (4),an annular sealing assembly (5), and a metal lining tube (6). One end of the cylindrical body (2) is used for injecting a pressurized liquid, and the other end is connected to the directing head (3). The controller (4) is arranged in a central channel of the cylindrical body (2). The annular sealing assembly (5) comprises an upper annular sealing assembly (51) and a lower annular sealing assembly (52), the upper annular sealing assembly (51) being sleeved on a first cylindrical body (21), and the lower annular sealing assembly (52) being sleeved on a second cylindrical body (23). The metal lining (6) is sleeved outside the annular sealing assembly (5) and the cylindrical body (2). The present apparatus features a simple and reliable structure, convenient construction, and low operating costs, does not require assistance of a pyrotechnic device, does not require high-cost components and auxiliary installations, and does not require a large hydraulic fracturing truck.
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| WO/2012/054445 | EXPANDABLE CASING PATCH |
| WO/2016/161283 | WELLBORE PLUG AND ABANDONMENT |
| WO/2011/027121 | WELLBORE SERVICING COMPOSITIONS AND METHODS OF MAKING AND USING SAME |
Inventors:
QU BO (CN)
Application Number:
PCT/CN2019/100319
Publication Date:
February 18, 2021
Filing Date:
August 13, 2019
Export Citation:
Assignee:
QU BO (CN)
International Classes:
E21B29/10
Foreign References:
| US20040159445A1 | 2004-08-19 | |||
| CN109267963A | 2019-01-25 | |||
| CN101148974A | 2008-03-26 | |||
| CN103089183A | 2013-05-08 | |||
| CN203175447U | 2013-09-04 | |||
| CN109681204A | 2019-04-26 | |||
| CN109386247A | 2019-02-26 | |||
| US20050194129A1 | 2005-09-08 |
Attorney, Agent or Firm:
XI'AN ZHIFAN INTELLECTUAL PROPERTY OFFICE (GENERAL PARTNERSHIP) (CN)
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