Title:
ANCHORING ASSEMBLY FOR DOWNHOLE TOOL, AND DOWNHOLE TOOL
Document Type and Number:
WIPO Patent Application WO/2021/217332
Kind Code:
A1
Abstract:
The present invention relates to the field of petroleum downhole construction, and particularly to an anchoring assembly for a downhole tool and a downhole tool. The anchoring assembly comprises an anchoring assembly main body, wherein the anchoring assembly main body comprises an outer surface and an inner surface; the inner surface is used for being assembled with an outer surface of a mandrel in a matched manner; at least one circular complete spiral gap structure is provided in the circumferential direction of the anchoring assembly main body; and an anchoring structure fixed to the inner wall of a shaft is arranged on the outer surface. Expansion of the outer diameter of the anchoring assembly is not limited by the elongation rate of a material, such that the expansion rate of the anchoring assembly main body is improved; and the anchoring assembly can be configured to be a part with a small outer diameter, such that the outer diameter of the whole downhole tool is reduced, and thus the success rate of the tool passing through a downhole hole shrinkage section is increased.
Inventors:
ZENG QIJUN (CN)
JIANG CHUANLONG (CN)
JIANG CHUANLONG (CN)
Application Number:
PCT/CN2020/087206
Publication Date:
November 04, 2021
Filing Date:
April 27, 2020
Export Citation:
Assignee:
VERTECHS PETROLEUM TECH INNOVATION & EQUIPMENT MANUFACTURING CO LTD (CN)
International Classes:
E21B33/12; E21B33/13; E21B33/134
Foreign References:
| US20180016864A1 | 2018-01-18 | |||
| CN105971556A | 2016-09-28 | |||
| CN105781480A | 2016-07-20 | |||
| CN106930723A | 2017-07-07 | |||
| CN201428421Y | 2010-03-24 | |||
| CN109577910A | 2019-04-05 | |||
| US20090126925A1 | 2009-05-21 |
Attorney, Agent or Firm:
KEYCOM PARTNERS, P.C. (CN)
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