Title:
PACKING METHOD FOR INJECTION AND PRODUCTION IN SAME WELL AND WELL COMPLETION STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/004163
Kind Code:
A1
Abstract:
A packing method for injection and production in the same well and a well completion structure, the packing method comprising the following steps: (1) lowering a double-flow-channel tubular column into a well; (2) filling an annular space (6) between the double-flow-channel tubular column and the well wall with packing particles until the packing particles fill the annular space and accumulate to form a continuous packing body (13); and (3) sealing the annular space. According to the packing method and the well completion structure, the continuous packing body formed by accumulating in a shaft may pile up tp fill the whole section, the sealing and isolation effects are good, and the high spatial self-adaptivity is achieved. During the process of lowering the tubular column, the well completion structure is not hindered by a packer that is preset on the tubular column, the construction process is easy, and the problem in which the packer is jammed in the shaft may be avoided. In addition, the tubular column may be retrieved.
Inventors:
PEI BAILIN (CN)
NIE JIANFEI (CN)
NIE JIANFEI (CN)
Application Number:
PCT/CN2020/090967
Publication Date:
January 14, 2021
Filing Date:
May 19, 2020
Export Citation:
Assignee:
ANTON BAILIN OILFIELD TECH BEIJING CO LTD (CN)
International Classes:
E21B43/20; E21B43/16
Foreign References:
CN110242264A | 2019-09-17 | |||
CN210685949U | 2020-06-05 | |||
CN1714226A | 2005-12-28 | |||
CN101705802A | 2010-05-12 | |||
CN105917072A | 2016-08-31 | |||
CN105114048A | 2015-12-02 | |||
CN105765162A | 2016-07-13 | |||
US20170030173A1 | 2017-02-02 |
Attorney, Agent or Firm:
BEIJING XINGZHI XIANGDA INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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