Title:
ENVIRONMENTALLY FRIENDLY CAPSULAR BAG-TYPE DOWNHOLE KARST CAVE BLOCKING DEVICE, AND BLOCKING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/192042
Kind Code:
A1
Abstract:
Disclosed is an environmentally friendly capsular bag-type downhole karst cave blocking device, relating to the field of petroleum drilling, and mainly being used to block a downhole karst cave. The device comprises mechanical parts, such as a connecting rod, hinges (309, 310, 311), springs (407, 408), a one-way valve (204), a slide rail (102), a sensor (405), a ratchet and electromagnets (402, 404) in a combined transmission manner. The automatic karst cave blocking of the whole environmentally friendly capsular bag-type downhole karst cave blocking device is realized by means of a capsular bag. Further disclosed is an environmentally friendly capsular bag-type downhole karst cave blocking method. The device and method reduce the requirements for a leakage blocking material and a drill pipe, reduce the costs and time needed for blocking a karst cave, and can be used in large karst cave and honeycomb-shaped karst carve scenarios.
Inventors:
WANG YUN (CN)
JIANG ZHIGANG (CN)
JIANG DING (CN)
ZHANG LE (CN)
YU WEIJIE (CN)
XU ZHENYING (CN)
LU SUWEN (CN)
YIN YAN (CN)
ZHAO YUCHUN (CN)
JIANG ZHIGANG (CN)
JIANG DING (CN)
ZHANG LE (CN)
YU WEIJIE (CN)
XU ZHENYING (CN)
LU SUWEN (CN)
YIN YAN (CN)
ZHAO YUCHUN (CN)
Application Number:
PCT/CN2017/084793
Publication Date:
October 25, 2018
Filing Date:
May 18, 2017
Export Citation:
Assignee:
UNIV JIANGSU (CN)
International Classes:
E21B33/13; E02D19/12
Foreign References:
| CN105421475A | 2016-03-23 | |||
| CN105298518A | 2016-02-03 | |||
| CN105821894A | 2016-08-03 | |||
| CN106320728A | 2017-01-11 | |||
| CN205776263U | 2016-12-07 | |||
| CN202970767U | 2013-06-05 | |||
| DD262887A1 | 1988-12-14 |
Attorney, Agent or Firm:
JW IP LAW FIRM (CN)
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