Device is scraped in maintenance of spring sleeve pipe von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, DONG PINGZHI, FENG JIE, LI ZHENGHUI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, WU XIBO, JIN ZHANWEN

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Oil well pipeline maintenance device von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, DONG PINGZHI, FENG JIE, LI ZHENGHUI, BIAN XINSHE, TAN CHUNLEI, PAN TAIPING, WU XIBO, JIN ZHANWEN

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Oil recovery well head anti -theft device von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, DONG PINGZHI, FENG JIE, LI ZHENGHUI, PAN TAIPING, BIAN XINSHE, TAN CHUNLEI, WU XIBO, JIN ZHANWEN

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Producing string scrapes wax belt cleaning device von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, FENG JIE, DONG PINGZHI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, ZHAO DAYONG, WU XIBO, JIN ZHANWEN

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Rotation type balance adjustment beam -pumping unit pulley increases journey device von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, FENG JIE, DONG PINGZHI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, ZHAO DAYONG, WU XIBO, JIN ZHANWEN

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Anticreep sucker rod belt cleaning device von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, FENG JIE, DONG PINGZHI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, WU XIBO, JIN ZHANWEN

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Well head safety prevents spouting anti -theft device von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, FENG JIE, DONG PINGZHI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, ZHAO DAYONG, WU XIBO, JIN ZHANWEN

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Theftproof connecting device of whole well head production tree von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, DONG PINGZHI, FENG JIE, LI ZHENGHUI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, WU XIBO, JIN ZHANWEN

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Improve blowout preventer of crude oil production security von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, FENG JIE, DONG PINGZHI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, WU XIBO, JIN ZHANWEN

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Striking formula draining paraffin removal device von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, FENG JIE, DONG PINGZHI, LI ZHENGHUI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, WU XIBO, JIN ZHANWEN

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Pulley increases balanced micromatic setting of journey beam -pumping unit von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, DONG PINGZHI, FENG JIE, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, WU XIBO, JIN ZHANWEN

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Well head blowout preventer with theftproof function von CHEN MEITAO, LI ZHIQIANG, HUANG SHOUYIN, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, FENG JIE, DONG PINGZHI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, ZHAO DAYONG, WU XIBO, JIN ZHANWEN

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Novel well head theftproof production tree von CHEN MEITAO, HUANG SHOUYIN, LI ZHIQIANG, ZHAO XIANGJUN, MA XIANGZHONG, WANG QUN, DONG PINGZHI, FENG JIE, LI ZHENGHUI, TAN CHUNLEI, PAN TAIPING, BIAN XINSHE, WU XIBO, JIN ZHANWEN

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Self-pumped phase conjugation of 18°-cut Ce-doped KNSBN crystal at 632.8 nm von Bian, Shaoping, Jiang, Quanzhong, Chen, Huanchu, Zhang, Jingwen, Su, Xinshe, Sun, Daliang, Xu, Kebin, Sun, Wanjun

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