Integrated anti-hanging unlocking device
LIU AIGUO, WANG XIAOFENG, LIU DENGBING, FU GUANGJUN, CHENG HONGWEI, HE YIHUI, XIA MINGLI, ZHANG YAOXIAN, LEI HUACAI, LIU LI
Year of Publication 05.01.2021
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Year of Publication 05.01.2021
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Drilling following safety bypass device hydraulic balancing device and bypass leaking-stoppage back-off method
LIU WEI, ZHOU XUCHENG, CHEN TAO, LIU DENGBING, HE RUNSHENG, HE YIHUI, ZHANG WEI, XIA MINGLI, ZHANG YAOXIAN, LEI HUACAI, LIU GUOWEI
Year of Publication 02.10.2020
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Year of Publication 02.10.2020
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Safety bypass while drilling device
JIANG HONG, KE JIANXING, FENG LICHENG, FU GUANGJUN, LIU DENGBING, ZHANG YAOXIAN, LEI HUACAI
Year of Publication 16.08.2019
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Year of Publication 16.08.2019
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Flap-type wireless while-drilling centering device
WU DONGSHENG, DONG JIANGANG, ZHANG LIXIA, WANG XIAOFENG, FU GUANGJUN, ZHANG WEICHEN, ZHANG YAOXIAN, LEI HUACAI
Year of Publication 28.08.2018
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Year of Publication 28.08.2018
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YST 48R centralizer extracting tool
LI YUNZHI, FU GUANGJUN, LIU DENGBING, ZHANG PENGXIANG, ZHANG WEI, ZHANG YAOXIAN, LEI HUACAI
Year of Publication 06.04.2018
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Year of Publication 06.04.2018
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Inclinometer while drilling well head fixing device
KE JIANXING, WU ZHAOQING, CHEN TAO, FU GUANGJUN, LIU DENGBING, ZHANG PENGXIANG, LEI HUACAI
Year of Publication 27.03.2018
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Year of Publication 27.03.2018
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It is wireless along with pulling and running tool and unlocking device that bore measuring instrument
LI YUNZHI, WU DONGSHENG, YANG JIAWEI, CHENG HONGWEI, FU GUANGJUN, ZHANG PENGXIANG, ZHANG YAOXIAN, LEI HUACAI, QIN XINDE
Year of Publication 22.01.2019
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Year of Publication 22.01.2019
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Small -size 3 wing steel body PDC bore
DU QILANG, LI ZONGTAO, JIANG HONG, WU DONGSHENG, CHEN TAO, ZHANG JIANHUA, FU GUANGJUN, ZHANG PENGXIANG, LEI HUACAI
Year of Publication 17.04.2018
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Year of Publication 17.04.2018
Patent
Prevent directional PDC drill bit of mud drum
DU QILANG, LI ZONGTAO, JIANG HONG, LI YUNZHI, ZHANG JIANHUA, FU GUANGJUN, ZHANG PENGXIANG, LEI HUACAI
Year of Publication 19.12.2017
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Year of Publication 19.12.2017
Patent
Wireless while-drilling compound multipoint instrument
LI YUNZHI, YE DEBIN, FU JIHAO, WANG JUN, ZHANG YAOXIAN, LEI HUACAI, WANG TIANQIN
Year of Publication 24.09.2014
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Year of Publication 24.09.2014
Patent
Portable angular difference measuring gauge
LI YUNZHI, KE JIANXING, HUANG CHENGJIAN, LIU DENGBING, LI JITAI, YOU WEIGUO, LEI HUACAI, ZHANG YAOXIAN
Year of Publication 19.02.2014
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Year of Publication 19.02.2014
Patent
Anti-loosening device for anti-loosening circulating sleeve of wireless directional tool
FU JIHAO, CHANG YONGDUO, ZHANG BIN, ZHANG XIZHI, ZHANG YAOXIAN, LEI HUACAI
Year of Publication 27.04.2011
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Year of Publication 27.04.2011
Patent
Wireless with drilling composite multipoint instrument
LI YUNZHI, YE DEBIN, FU JIHAO, WANG JUN, ZHANG YAOXIAN, LEI HUACAI, WANG TIANQIN
Year of Publication 13.06.2012
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Year of Publication 13.06.2012
Patent
Wireless while-drilling compound multipoint instrument
LI YUNZHI, YE DEBIN, FU JIHAO, WANG JUN, ZHANG YAOXIAN, LEI HUACAI, WANG TIANQIN
Year of Publication 01.02.2012
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Year of Publication 01.02.2012
Patent
Safety anti-deviation drilling tool with half-piece type centralizers
FU JIHAO, ZHANG LONGLONG, XUE JIBIAO, LIU DENGBING, ZHANG WEI, LEI HUACAI, LI SHANGHUA
Year of Publication 22.06.2011
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Year of Publication 22.06.2011
Patent
Intelligent gyro measuring instrument
ZHOU LIN, FU JIHAO, ZHANG LANZHOU, LI JITAI, CHEN FUMING, ZHANG YAOXIAN, LEI HUACAI
Year of Publication 22.06.2011
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Year of Publication 22.06.2011
Patent
Single-sheet type centralizer for single-bending screw
FU JIHAO, HUANG CHENGJIAN, CHANG YONGDUO, LIU DENGBING, LI JITAI, LEI HUACAI
Year of Publication 11.03.2009
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Year of Publication 11.03.2009
Patent
Portable angle difference measure gauge
LI YUNZHI, KE JIANXING, HUANG CHENGJIAN, LIU DENGBING, LI JITAI, YOU WEIGUO, LEI HUACAI, ZHANG YAOXIAN
Year of Publication 29.06.2011
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Year of Publication 29.06.2011
Patent
Portable angular difference measuring gauge
LI YUNZHI, KE JIANXING, HUANG CHENGJIAN, LIU DENGBING, LI JITAI, YOU WEIGUO, LEI HUACAI, ZHANG YAOXIAN
Year of Publication 15.06.2011
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Year of Publication 15.06.2011
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