Downhole battery monitoring circuit and downhole battery switching circuit
WANG HAIQI, WAN FAMING, CHANG HONG, ZHANG ZHENHUA, YU XINGDONG, GU YUTANG, WAN ZHENG, GENG XIAOGUANG, LIANG HAITAO, LI YUHAI, YANG JUESUAN
Year of Publication 26.01.2021
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Year of Publication 26.01.2021
Patent
Assembled transmission shaft for CAIMS (China Adjustable Instrumented Motor System)
YANG ZHIJIAN, YAO WEINAN, ZHANG ZHENHUA, WANG GUANGYU, LI RUNQI, GU YUTANG, ZHANG TONGHAO, ZHANG XIN, LI YUHAI
Year of Publication 25.03.2015
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Year of Publication 25.03.2015
Patent
Line switching male slip ring for measuring and transmission motor
YANG ZHIJIAN, YAO WEINAN, ZHANG ZHENHUA, WANG GUANGYU, LI RUNQI, GU YUTANG, ZHANG TONGHAO, ZHANG XIN, LI YUHAI
Year of Publication 18.03.2015
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Year of Publication 18.03.2015
Patent
Novel self-excited impact mechanism
WANG WEI, WAN FAMING, HOU SHENG, ZHENG RUIQIANG, GU YUTANG, WAN ZHENG, GENG XIAOGUANG, YANG JUESUAN, LI YUHAI
Year of Publication 19.06.2020
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Year of Publication 19.06.2020
Patent
Pressure-holding check valve used during casing installing
WANG WEI, HOU SHENG, ZHENG RUIQIANG, WU GUANGXING, GU YUTANG, GENG XIAOGUANG, YANG JUESUAN, LI YUHAI, GUO FUXIANG
Year of Publication 13.03.2020
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Year of Publication 13.03.2020
Patent
Top drive control method and device, system electronic equipment and storage medium
BAI XIAOJIE, DUAN LIJUN, DONG YAN, ZHANG LEI, YU CHENGLONG, SONG CHENG, GENG XIAOGUANG, ZHENG LU, YANG JUESUAN, QI YUE, GU YUTANG, JIA LI, LI YUHAI, MA XIAOWEI
Year of Publication 22.06.2021
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Year of Publication 22.06.2021
Patent
Downhole hydraulic rotary cleaner for well drilling
BAI XIAOJIE, DENG SHENGCONG, GU YUTANG, XU YONGHUI, SONG CHENG, GENG XIAOGUANG, GONG HUA, LI RUIYING, LI YUHAI, MA XIAOWEI, GUO FUXIANG
Year of Publication 11.03.2015
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Year of Publication 11.03.2015
Patent
Top drive gear box monitoring method and device, electronic equipment and storage medium
BAI XIAOJIE, ZHANG LEI, DUAN LIJUN, DONG YAN, YU CHENGLONG, GENG XIAOGUANG, ZHENG LU, YANG JUESUAN, QI YUE, GU YUTANG, WAN ZHENG, JIA LI, LI YUHAI, MA XIAOWEI
Year of Publication 07.05.2021
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Year of Publication 07.05.2021
Patent
Force junk basket with reverse circulation
LI LONGTAO, WANG YUXI, GU YUTANG, QIAN KEGUI, XIANG FENG, LIU CHUNLAI, ZHANG JINTAO
Year of Publication 13.07.2016
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Year of Publication 13.07.2016
Patent
Emitter and emitting and receiving system of parallel electromagnetic wave measurement while drilling
TIAN YUDONG, YU CHENGLONG, WANG XIAOZHOU, GU YUTANG, ZHAO ZHIXUE, YUAN LEI, SONG CHENG, YANG YI, HAN YU'AN, YANG JUESUAN, MA XIAOWEI
Year of Publication 29.05.2018
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Year of Publication 29.05.2018
Patent
Ball abrasion-reducing torsion-decreasing joint
LI XIHONG, ZHENG RUIQIANG, GU YUTANG, FAN CUN, YANG XIAOLEI, GUO FUXIANG
Year of Publication 16.02.2011
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Year of Publication 16.02.2011
Patent
Releasing device and salvaging device for well completion
YANG XUESUAN, ZHENG RUIQIANG, GU YUTANG, DI BAIYING, FAN CUN, GONG HUA, LI YUHAI
Year of Publication 02.05.2012
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Year of Publication 02.05.2012
Patent
Wired measurement and transmission motor for measurement while-drilling instrument
YANG ZHIJIAN, YANG ZHIGUANG, WANG GUANGXIN, YAO HAITAO, GU YUTANG, FAN CUN, REN WENJIN, GENG XIAOGUANG, YANG JUESUAN, LI YUHAI, GUO FUXIANG
Year of Publication 24.04.2013
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Year of Publication 24.04.2013
Patent
Shell of electromagnetic wave resistivity instrument
YANG ZHIJIAN, YANG ZHIGUANG, WANG GUANGXIN, GU YUTANG, FAN CUN, REN WENJIN, YAO JIANGTAO, GENG XIAOGUANG, LI YUHAI, GUO FUXIANG
Year of Publication 24.04.2013
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Year of Publication 24.04.2013
Patent