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Year of Publication 08.07.2015
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Water injection filtering device for oil production wells
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Year of Publication 30.04.2014
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Year of Publication 30.04.2014
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Top squeeze type water injection filtering device for oil production wells
WU JIANDU, LI ZHENGHUI, REN HU, WEI DONGLAN, GONG JIANMING, LU XINGFU, XUAN YANJUN, ZOU CAIBING
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Year of Publication 30.04.2014
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Pedal ring lock assembly
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Year of Publication 16.02.2011
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Year of Publication 16.02.2011
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Double-acting walking beam type oil pumping device
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Year of Publication 03.07.2013
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Year of Publication 03.07.2013
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Electromagnetic compound paraffin removal device
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Year of Publication 26.06.2013
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Year of Publication 26.06.2013
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Four-well linkage oil pumping device
CHEN BIN, HU JIANGANG, REN HU, ZHANG HUI, LV XIAOWEN, WANG XIQIANG, ZHU MINGCHANG, XUAN YANJUN
Year of Publication 26.06.2013
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Year of Publication 26.06.2013
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Anti-hand-squeezing device for hydraulic operating pliers
WU JIANDU, GAO FEI, ZHAO SHUPING, LI ZHENGHUI, LV XIAOWEN, GUO ZHENGYANG, CHEN HAIQUAN, LIU JIWEI, XUAN YANJUN, SUN KEBIN
Year of Publication 24.10.2012
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Year of Publication 24.10.2012
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Stand-alone double-well chained machine type oil production device
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Year of Publication 26.06.2013
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Year of Publication 26.06.2013
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Oil worker well killing fluid viscosity measurement special mobile phone device
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Year of Publication 02.07.2014
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Year of Publication 02.07.2014
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Device for preventing oil derrick from crashing into crown
ZHONG XIAOGANG, GOU SHENYANG, SUN XUEJUN, WANG YONGGANG, XUAN YANJUN, ZHAO YULIAN, LI HONGJUN, YU DONG, LI JIAN'GANG, MIN FANBING, XIANG GUOYING, CUI XIA, REN HU, WEI DONGLAN, CHEN RONGLI, LI XIAYUN, ZHU MINGCHANG, DAI CHENGZHONG, HUANG CHAOXIA, SUN LINGHUA, LIU XIANGJUN, DONG BAOYU
Year of Publication 02.07.2014
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Year of Publication 02.07.2014
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Single-lifting-ring hanging preventing device of oil well elevator
YU WENHAI, ZHONG XIAOGANG, LIU GANG, XUAN YANJUN, ZHANG XU, ZHAO YULIAN, LI HONGJUN, LI JIAN'GANG, XU CHANGXIA, XU HONGMEI, XIANG GUOYING, ZHAO LIANG, REN HU, WEI DONGLAN, HU JIHE, ZHU MINGCHANG, DAI CHENGZHONG, LI XIAYUN, HUANG CHAOXIA, SHI CHUNGUO, LIU XIANGJUN, WANG YAN
Year of Publication 04.06.2014
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Year of Publication 04.06.2014
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Numerical control electrical heating paraffin removal device special for gas well
JIANG YALI, ZHOU JIARONG, GAO YONGSHENG, LI JIANGANG, ZHANG JIANQIANG, LIU GANG, HUANG ZHAOXIA, XUAN YANJUN, ZHANG XU, ZHAO YULIAN, LI HONGJUN, GAO YING, XIANG GUOYING, DING HAITAO, REN HU, ZHAO LIANG, WEI DONGLAN, CHEN CUILING, ZHU MINGCHANG, DAI CHENGZHONG, SUN LINGHUA, WANG YAN
Year of Publication 14.05.2014
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Year of Publication 14.05.2014
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Fishing device with internally-arranged camera and special for cable in gas well
JIANG YALI, ZHOU JIARONG, LI JIANGANG, LIU GANG, HUANG ZHAOXIA, DONG JUN, XUAN YANJUN, ZHANG XU, LI HONGJUN, WANG WEI, XIANG GUOYING, TAN CHUNLEI, ZHAO LIANG, REN HU, WEI DONGLAN, CHEN CUILING, ZHU MINGCHANG, DAI CHENGZHONG, WANG YAN
Year of Publication 14.05.2014
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Year of Publication 14.05.2014
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Special gas transmission pipeline descaling device with camera
ZHOU JIARONG, LI JIANGANG, GOU SHENYANG, HUANG ZHAOXIA, AN XIAOWEI, SUN JIMEI, XUAN YANJUN, ZHANG XU, ZHAO YULIAN, HAN RONG, LI HONGJUN, ZHAO SULAN, LI FENGCHAO, WANG WEI, XIANG GUOYING, CUI XIA, DING HAITAO, ZHAO LIANG, REN HU, WAN GUOQUN, LI XIAYUN, SUN LINGHUA, BAI YUNWANG, WANG YAN
Year of Publication 14.05.2014
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Year of Publication 14.05.2014
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Fixed valve block-resistant device
MAO FANGEN, WANG SHULI, PENG HUAYIN, ZHANG CHUANXIANG, LI HU, XUAN YANJUN, ZHAO XINGLEI, DU HANSONG
Year of Publication 20.08.2008
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Year of Publication 20.08.2008
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