Title:
METHOD FOR ACHIEVING WATER SELF-PLUGGING BY MEANS OF STACKING PACKER PARTICLES, WATER SELF-PLUGGING PIPE STRING, AND WELL COMPLETION STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/022909
Kind Code:
A1
Abstract:
Disclosed is a method for achieving water self-plugging by means of stacking packer particles at an oil-water interface, the method comprising the following steps: injecting packer particles into a fracture cave of a wellbore production segment such that the packer particles form a stack layer (4) at an oil-water interface; and loading, into the wellbore production segment, a water self-plugging pipe string which is provided with a partitioning device and a plug (6), such that the partitioning device partitions the production segment into multiple independent production sub-segments. After being brought into production, the oil-water interface gradually rises until one or more production sub-segments are partially immersed; and the plug (6) is plugged under the action of the packer particles being carried by water, thereby achieving the water self-plugging of the production sub-segments.
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Inventors:
PEI BAILIN (CN)
DAI CHAOYONG (CN)
DAI CHAOYONG (CN)
Application Number:
PCT/CN2020/096067
Publication Date:
February 11, 2021
Filing Date:
June 15, 2020
Export Citation:
Assignee:
ANTON BAILIN OILFIELD TECH BEIJING CO LTD (CN)
International Classes:
E21B33/13; E21B17/00
Foreign References:
| CN110424923A | 2019-11-08 | |||
| CN109653707A | 2019-04-19 | |||
| CN103726813A | 2014-04-16 | |||
| US8307916B1 | 2012-11-13 | |||
| CN103437737A | 2013-12-11 |
Attorney, Agent or Firm:
BEIJING XINGZHI XIANGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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