Electric ram blowout preventer
YANG HUI, CUI JIAKAI, XIAO LITONG, SONG CHUNYUAN, HE JINQIAN, TANG QIULIN, ZHAI SHANGJIANG, GUO JUN, LONG YUHANG, ZHAO LIN, DENG LIMING, XIANG XIQIONG
Year of Publication 05.08.2022
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Year of Publication 05.08.2022
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Wellhead device
YANG XIAOFENG, XIAO LITONG, GU BIN, LIU YI, CHEN TAO, REN ZIWEI, HUANG ZHENGCHUAN, LU JUN'AN, LIU SHUANGWEI, SHI XITIAN, WANG YANMIN, ZHA LEI
Year of Publication 03.06.2022
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Year of Publication 03.06.2022
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Cutting flashboard for under-pressure operation machine
DU WENBO, SONG JIE, LIU MING, ZHANG CHUAN, LIU YUNHONG, WANG WEI, XIAO LITONG, SONG CHUNYUAN, CHEN TAO, LI WEI, GUO JUN, KANG SHIQI, LU YANSHAN, ZHAO LIN, SHE XIAOMEI
Year of Publication 10.05.2022
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Year of Publication 10.05.2022
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Double-effect pressure releasable high-pressure stop valve
ZHENG JIAYING, XIAO LITONG, DU WENBO, ZHENG YONG, SONG ZHENHUA, RAO DONG, LIU MING, TANG QIULIN, ZHANG CHUAN
Year of Publication 22.10.2014
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Year of Publication 22.10.2014
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Crossover flange with neck and sealing structure
ZHENG JIAYING, XIAO LITONG, DU WENBO, ZHENG YONG, SONG ZHENHUA, RAO DONG, LIU MING, TANG QIULIN, ZHANG CHUAN
Year of Publication 22.10.2014
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Year of Publication 22.10.2014
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Surface casing linkage
YANG XIAOFENG, XIAO LITONG, DU WENBO, LIU YI, CHEN TAO, REN ZHIWEI, RAO DONG, HUANG ZHENGCHUAN, LIU SHUANGWEI, SHI XITIAN
Year of Publication 05.02.2019
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Year of Publication 05.02.2019
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Bore annular blowout preventer for well workover
XIAO LITONG, DU FENGHUI, WU ZHIJUN, QIN SHIKUAN, SONG ZHENHUA, WANG YUHAI, TANG QIULIN, LIU MING, ZHANG CHUAN
Year of Publication 04.01.2017
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Year of Publication 04.01.2017
Patent
Annular blowout preventer for drilling and workover
XIAO LITONG, DU FENGHUI, WU ZHIJUN, QIN SHIKUAN, SONG ZHENHUA, WANG YUHAI, TANG QIULIN, LIU MING, ZHANG CHUAN
Year of Publication 02.11.2016
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Year of Publication 02.11.2016
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Rotary blowout preventer
YANG SHENGHAI, XIAO LITONG, ZHANG BIN, ZHENG YONG, ZHANG HUI, LIU MING, LIU CHUNQUAN
Year of Publication 04.12.2013
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Year of Publication 04.12.2013
Patent
Adjustable throttle valve rod
XIAO LITONG, DU WENBO, ZHENG YONG, SONG ZHENHUA, LIU MING, TANG QIULIN, ZHANG CHUAN, YANG DENGSHU
Year of Publication 20.11.2013
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Year of Publication 20.11.2013
Patent
Integrated multifunctional blowout preventer
XIAO LITONG, DU WENBO, SONG CHUNYUAN, ZHENG YONG, SONG ZHENHUA, CHEN QIAO, TANG QIULIN, ZHANG CHUAN, YANG DENGSHU
Year of Publication 06.11.2013
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Year of Publication 06.11.2013
Patent
Rotary blowout preventer
YANG SHENGHAI, XIAO LITONG, ZHANG BIN, ZHENG YONG, ZHANG HUI, LIU MING, LIU CHUNQUAN
Year of Publication 07.09.2011
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Year of Publication 07.09.2011
Patent
Rotary blowout preventer
YANG SHENGHAI, XIAO LITONG, ZHANG BIN, ZHENG YONG, ZHANG HUI, LIU MING, LIU CHUNQUAN
Year of Publication 29.06.2011
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Year of Publication 29.06.2011
Patent
Wellhead pressure test plug
YANG XIAOFENG, ZHENG JIAYING, XIAO LITONG, LIU YI, SONG CHUNYUAN, ZHENG YONG, SONG ZHENHUA, RAO DONG, YANG JIAN, TANG QIULIN, GUO JUN, ZHANG CHUAN
Year of Publication 20.11.2013
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Year of Publication 20.11.2013
Patent
Automatically-controlled multiple branch choke manifold
XIAO LITONG, DU WENBO, ZOU YAN, ZHENG YONG, RAO DONG, YE NING, YANG JIAN, TANG QIULIN, WEI MINGQUAN, ZHANG CHUAN
Year of Publication 06.11.2013
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Year of Publication 06.11.2013
Patent
P-type seal ring for hydraulic shaft
YANG XIAOFENG, ZHENG JIAYING, XIAO LITONG, LIU YI, SONG CHUNYUAN, ZOU YAN, ZHENG YONG, SONG ZHENHUA, RAO DONG, TANG QIULIN, ZHANG CHUAN
Year of Publication 06.11.2013
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Year of Publication 06.11.2013
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