Pressure compensation device with accumulator group for controlled pressure drilling

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United States of America Patent

PATENT NO 12000222
APP PUB NO 20230228162A1
SERIAL NO

17767929

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Abstract

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A pressure compensation device with an accumulator group for controlled pressure drilling includes an electrical flat valve, a check valve, an accumulator group, a flanged pup joint and a support base. The electrical flat valve is connected to the check valve and is mounted on a top surface of the support base. The accumulator group mounted on the whole support base is a pre-storage pressure compensation device for controlled pressure drilling, and is located at a downstream position of the check valve. The liquid inlet end of the accumulator group is connected to the check valve, and the liquid discharge end is connected to the flanged pup joint.

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Patent Owner(s)

Patent OwnerAddress
CHINA NATIONAL PETROLEUM CORPORATIONBEIJING 100007
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)257061 NO TWO 271 NORTH ROAD DONGYING DISTRICT SHANDONG DONGYING DONGYING CITY SHANDONG PROVINCE 257061
CNPC BOHAI DRILING ENGINEERING COMPANY LIMITEDNO 83 SECOND STREET TIANJIN ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE TIANJIN 300457

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Guodong Tianjin, CN 112 321
Chen, Lei Tianjin, CN 979 4055
Huang, Qiang Tianjin, CN 254 2730
Liu, Gang Tianjin, CN 625 6202
Luan, Jiacui Tianjin, CN 1 0
Ma, Jinshan Tianjin, CN 1 0
Ma, Long Tianjin, CN 43 230
Ma, Menglei Tianjin, CN 1 0
Meng, Xiantao Tianjin, CN 1 0
Qi, Jintao Tianjin, CN 1 0
Sun, Baojiang Shandong, CN 25 26
Wang, Xing Tianjin, CN 221 1213
Wang, Zhiyuan Shandong, CN 75 120
Wei, Hongyin Tianjin, CN 1 0
Wei, Liming Tianjin, CN 17 503
Xi, Fengliang Tianjin, CN 1 0
Xu, Haichao Tianjin, CN 1 0
Yang, Zisen Tianjin, CN 1 0
Zhao, Yuanlin Tianjin, CN 1 0

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