In-situ stress measurement device and method for ultra-deep non-vertical drilling

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United States of America

PATENT NO 12264582
APP PUB NO 20240401477A1
SERIAL NO

18733866

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Abstract

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An in-situ stress measurement device for ultra-deep non-vertical drilling adopts a technical route of single channel and bidirectional rolling of in-hole equipment, and its related functions are mainly realized by a bidirectional rolling device and a split-type axial-force-free circuit switching valve. The bidirectional rolling device can drive the in-hole equipment to move freely in a circumferential direction and back and forth, which changes sliding friction between the in-hole equipment and a hole wall into rolling friction during an in-situ stress measurement of non-vertical drilling. The split-type axial-force-free circuit switching valve provides a technical solution for a single-pipe test in the non-vertical drilling. The device greatly reduces wear of the in-hole equipment and the hole wall when the in-hole equipment is installed and withdrawn, can effectively protect markings of an impression measurement, and is suitable for high-efficiency in-situ stress measurement by a hydraulic fracturing method in the non-vertical ultra-deep drilling.

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Patent Owner(s)

Patent OwnerAddress
CHANGJING RIVER SCIENTIFIC RESEARCH INSTITUTENO 23 HUANGPU ROAD WUHAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ai, Kai Wuhan, CN 1 0
Ding, Xiuli Wuhan, CN 3 0
Dong, Zhihong Wuhan, CN 3 12
Fu, Ping Wuhan, CN 25 642
Han, Xiaoyu Wuhan, CN 7 8
Liu, Yuankun Wuhan, CN 3 1
Luo, Sheng Wuhan, CN 24 59
Wang, Bin Wuhan, CN 1095 9516
Zhang, Heng Xiantao, CN 215 1907
Zhang, Xinhui Wuhan, CN 14 85
Zhou, Chunhua Wuhan, CN 44 381
Zhou, Liming Wuhan, CN 24 203

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