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Patent Searching and Data


Title:
FLUID SEPARATING DEVICE, HOISTWAY STRUCTURE, AND PETROLEUM OR NATURAL GAS PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/047872
Kind Code:
A1
Abstract:
Disclosed are a fluid separating device, a hoistway structure, and a petroleum or natural gas production method. By means of a fluid separating device (010) and a hoistway structure (020), the requirements for the intensity of a hitting force of a lower hitting device (203) on a mandrel (200) are reduced, and only a small collision force between the mandrel (200) and the lower hitting device (203) is required to complete the switching from a contracted position to an expanded position of a mandrel (200),thereby improving the reliability of the fluid separating device (010) and the hoistway structure (020) during operation.

Inventors:
LIU SHIJI (CN)
TANG YONG (CN)
ZHANG GANG (CN)
LI JUNMIN (CN)
ZHANG ZHONGLIN (CN)
LIU SHUFEI (CN)
SU SHICE (CN)
YI CHENGXIONG (CN)
ZHOU HUA (CN)
TAN YUXI (CN)
TANG TIAN (CN)
LIU XIANGMEIKE (CN)
LIU HANSEN (CN)
CHEN JUNHONG (CN)
ZHOU TONGTONG (CN)
Application Number:
PCT/CN2018/104241
Publication Date:
March 14, 2019
Filing Date:
September 05, 2018
Export Citation:
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Assignee:
LIU SHUHAO (CN)
International Classes:
E21B33/12
Foreign References:
CN107313738A2017-11-03
CN104389782A2015-03-04
CN106640031A2017-05-10
CN104405319A2015-03-11
CN206111150U2017-04-19
US20080185141A12008-08-07
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