Polish rod sealing device
SONG YONGKANG, MENG XIANGGUO, SHI YANBO, LIU HAIXIA, SU JIANBIN, YU XINGCAI, YANG LIN, WANG SHIQIAN, KANG SHAOLI
Year of Publication 11.10.2019
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Year of Publication 11.10.2019
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Prevent spouting box in same direction as installing partially
YU CHUNLING, SONG QIANG, MENG XIANGGUO, YU CHAOYANG, LIU HAIXIA, YU XINGCAI
Year of Publication 31.08.2018
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Year of Publication 31.08.2018
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Hoop component
YU CHUNLING, XIA YING, MENG XIANGGUO, WANG LIXIN, LIU HAIXIA, YU XINGCAI, KANG SHAOLI
Year of Publication 31.08.2018
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Year of Publication 31.08.2018
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Dipper circulator
XIA YING, MENG XIANGGUO, WANG ZHENYU, LIU HAIXIA, YU XINGCAI, YANG LIN, WANG SHIQIAN
Year of Publication 04.08.2017
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Year of Publication 04.08.2017
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Packing of oil pumping motor -pumped well installs ware additional
FENG FENG, WANG ZHEN, YU XINGCAI, YAO JUXING, WANG SHIQIAN, ZHAO CHANGMING
Year of Publication 04.08.2017
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Year of Publication 04.08.2017
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Bolt dismouting box spanner
MENG XIANGGUO, FENG FENG, WANG ZHEN, YU XINGCAI, YAO JUXING, WANG SHIQIAN, ZHAO CHANGMING
Year of Publication 07.07.2017
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Year of Publication 07.07.2017
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Adjustable water mixing water gaging mouth
ZHANG GUOQIANG, MENG XIANGGUO, SHI YANBO, YANG FENGJIU, YU XINGCAI, YANG LIN, WANG SHIQIAN
Year of Publication 07.07.2017
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Year of Publication 07.07.2017
Patent
Oiler
YANG MEI, FENG FENG, WANG ZHEN, YU XINGCAI, WANG SHIQIAN, ZHAO CHANGMING
Year of Publication 07.07.2017
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Year of Publication 07.07.2017
Patent
Valve ware is got to impacted style
SONG QIANG, MENG XIANGGUO, SHI YANBO, LIU HAIXIA, YU XINGCAI, YANG LIN, LIU YONG
Year of Publication 07.07.2017
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Year of Publication 07.07.2017
Patent
Packing extractor of oil pumping motor -pumped well
ZHANG GUOQIANG, FENG FENG, WANG ZHEN, YU XINGCAI, YAO JUXING, WANG SHIQIAN, ZHAO CHANGMING
Year of Publication 07.07.2017
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Year of Publication 07.07.2017
Patent
A pump pole support that when is used for pumpingh well to drag for pole
YANG MEI, FENG FENG, WANG ZHEN, YU XINGCAI, WANG SHIQIAN, ZHAO CHANGMING
Year of Publication 06.06.2017
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Year of Publication 06.06.2017
Patent
Sucker rod frizing device
YANG MEI, FENG FENG, WANG ZHEN, YU XINGCAI, YAO JUXING, WANG SHIQIAN, ZHAO CHANGMING
Year of Publication 06.06.2017
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Year of Publication 06.06.2017
Patent