Self-adaptive casing pipe centralizer for oilfield exploitation
DONG HUIQIN, SUN ZHIPENG, ZHAO ZHAOXIA, YU HONGFENG, ZHOU YUHUA, ZHAO YUEHAN, QIN JUNYAN
Year of Publication 15.01.2021
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Year of Publication 15.01.2021
Patent
Machining device for integral type strong elastic sleeve centralizer
DONG HUIQIN, SUN ZHIPENG, ZHAO ZHAOXIA, ZHOU YUHUA, YANG SHOULIANG, QIN JUNYAN
Year of Publication 18.12.2020
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Year of Publication 18.12.2020
Patent
Lengthened PDC drill bit with centralizer
DONG HUIQIN, SUN ZHIPENG, ZHAO ZHAOXIA, YANG SHOULIANG, ZHOU YUHUA, YU HONGFENG
Year of Publication 01.12.2020
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Year of Publication 01.12.2020
Patent
Casing centralizer for drilling
DONG HUIQIN, SUN ZHIPENG, ZHAO ZHAOXIA, YU HONGFENG, ZHOU YUHUA, QIN JUNYAN
Year of Publication 01.12.2020
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Year of Publication 01.12.2020
Patent
Anti-deformation elastic casing centralizer
DONG HUIQIN, SUN ZHIPENG, ZHAO ZHAOXIA, ZHOU YUHUA, YANG SHOULIANG, QIN JUNYAN
Year of Publication 01.12.2020
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Year of Publication 01.12.2020
Patent
Anti-blocking PDC (Polycrystalline Diamond Compact) drill bit
DONG HUIQIN, SUN ZHIPENG, ZHAO ZHAOXIA, YANG SHOULIANG, YU HONGFENG, QIN JUNYAN
Year of Publication 01.12.2020
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Year of Publication 01.12.2020
Patent
Casing centralizer limiting device
DONG HUIQIN, SUN ZHIPENG, ZHAO ZHAOXIA, ZHOU YUHUA, YU HONGFENG, YANG SHOULIANG
Year of Publication 20.11.2020
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Year of Publication 20.11.2020
Patent