Title:
PACKER AND UNSEALING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2024/017231
Kind Code:
A1
Abstract:
A packer, comprising: a central tube (1), an outer surface thereof being provided with a first prefabricated groove (11); a rubber cylinder unit (2), comprising a rubber cylinder assembly (21), an upper rubber cylinder seat (22) and a lower rubber cylinder seat (23), wherein the inner wall of the upper rubber cylinder seat is provided with a clamping groove (221); an upper anchoring unit (3) and a lower anchoring unit (4) which are located at two ends of the rubber cylinder unit, the upper anchoring unit comprising an upper cone (31) and an upper slip (32), and the lower anchoring unit comprising a lower cone (41) and a lower slip (42); and an unsealing mechanism (5), comprising a connecting sleeve (51), the connecting sleeve having disposed thereon a through groove (511), and having an unsealing block (52) mounted in the through groove; the unsealing block being constructed so as to be matched with the clamping groove on a radial outer side when in an initial state, so as to axially secure the upper rubber cylinder seat to the upper cone, and via an upward lifting action of the central tube, allowing the upper rubber cylinder seat to axially move relative to the upper cone, causing the rubber cylinder unit to become unsealed; and the lower cone and the upper cone being configured to be capable of respectively moving up and down by means of upward lifting movement and downward pressing movement of the central pipe, in order to respectively cause the unclamping of the lower anchoring unit and upper anchoring unit. Additionally disclosed is an unsealing method of the packer.
Inventors:
YUE HUI (CN)
HE TONG (CN)
PANG WEI (CN)
DING SHIDONG (CN)
MAO JUN (CN)
GUO XIAO (CN)
HE TONG (CN)
PANG WEI (CN)
DING SHIDONG (CN)
MAO JUN (CN)
GUO XIAO (CN)
Application Number:
PCT/CN2023/107861
Publication Date:
January 25, 2024
Filing Date:
July 18, 2023
Export Citation:
Assignee:
CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC PETROLEUM ENGINEERING TECH RESEARCH INSTITUTE CO LTD (CN)
SINOPEC PETROLEUM ENGINEERING TECH RESEARCH INSTITUTE CO LTD (CN)
International Classes:
E21B33/128; E21B33/129; E21B33/1295
Foreign References:
| CN215213421U | 2021-12-17 | |||
| CN108915633A | 2018-11-30 | |||
| CN105201446A | 2015-12-30 | |||
| CN204627521U | 2015-09-09 | |||
| CN101165310A | 2008-04-23 | |||
| US3659647A | 1972-05-02 |
Attorney, Agent or Firm:
YUHUA UNITED INTELLECTUAL PROPERTY LAW FIRM (CN)
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