Title:
PLUGGING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/189932
Kind Code:
A1
Abstract:
A plugging method, applied to a mid-deep strata geothermal well (6), and comprising: removing soil of a leakage area, and adding backfill soil and compacting same to form a backfill soil layer (4); drilling at leakage points of the leakage area to form at least one grouting hole (9) and at least one exhaust hole (5); inserting a grouting pipe (10) into the grouting hole, and injecting a plugging material to a position below the backfill soil layer by means of the grouting pipe; plugging the exhaust hole, and injecting a plugging material to be the position below the backfill soil layer again; and standing for a preset time to complete the plugging. The plugging material is injected by adopting a low-pressure method, the operation is simple, and the leakage points are plugged more effectively by injecting the plugging material twice.
Inventors:
SHAO JIXIN (CN)
YU ZHAOLONG (CN)
GAO SHENGYOU (CN)
WEI GUOPING (CN)
YANG HAIHONG (CN)
TIAN BINSHOU (CN)
SI SHUANGLONG (CN)
XU MINSHENG (CN)
WANG XI (CN)
YU ZHAOLONG (CN)
GAO SHENGYOU (CN)
WEI GUOPING (CN)
YANG HAIHONG (CN)
TIAN BINSHOU (CN)
SI SHUANGLONG (CN)
XU MINSHENG (CN)
WANG XI (CN)
Application Number:
PCT/CN2020/133205
Publication Date:
September 30, 2021
Filing Date:
December 02, 2020
Export Citation:
Assignee:
GANSU BUILDING MATERIALS DESIGN & RES INSTITUTE CO LTD (CN)
International Classes:
E21B33/13
Foreign References:
| CN111395992A | 2020-07-10 | |||
| CN106958433A | 2017-07-18 | |||
| CN208122817U | 2018-11-20 | |||
| CN2707819Y | 2005-07-06 | |||
| CN102678083A | 2012-09-19 | |||
| US5176219A | 1993-01-05 |
Attorney, Agent or Firm:
LANZHOU JIANUO INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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