Anti-splashing device for bottom of oil production wellhead von ZHANG BAOLIAN, ZHOU PING, CUI HONGBIN, LIU HAN, ZHANG GUOQIAN, HUANG JINKUN, QU GUANGCAO, ZHANG YONGLIANG, ZOU ZHENGLU, HAN ZHONGQI, DAI JUN, SUN AILING, WU HUAJUN

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Portable hydraulic top drive device von QU GUANGCAO, LIN TIANYUAN, WANG JIE, JIN HONGTAO, LIU MINGKUN, LI MINGXIANG, TIAN GANG, LIU QUANHE, WEI HOUCHAO

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Connecting device von QU GUANGCAO, YAN SHUFENG, HAN CHENGGANG, HE ZI'EN, WANG SHUHUI, GE HAILAN, LI MINGXIANG, JIA HAIJIAN, LIU HAN, XIAO JUAN

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Open flow device that oil well is adjustable von XU YANLAI, LIU SHIPENG, WANG YONGZHONG, ZHOU JIAN, LIU JIASHENG, QU GUANGCAO, GOU YINGFEI, FAN XIMING, SUN SHENGKAI, WANG HUAIHAI, ZHANG XIAOWEN, SHU DONGSHENG, YANG JIQIANG

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Intelligent water level monitor von TIAN KAI, LIU QUNJIE, LI MO, FAN HONGYAN, ZHAO BINHAI, BAI XINJIE, LI MAOCHENG, ZHENG JUN, QU GUANGCAO, BAI YONGLIN, SUN SHENGKAI, LIU ZHONGXIANG, MA QIANG

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Composite sampling device for oil well von TIAN KAI, LIU HONGLEI, XU XIN, LIU QUNJIE, LI MO, LI YUNAO, BAI XINJIE, MENG FANYU, QU GUANGCAO, GAI SHUAI, ZHANG HONGYAN, LI TIESHUAN, SUN SHENGKAI

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Multifunctional oil-extraction and gas-injection integrated oil well pump for sanding heavy crude oil well von FENG JINGJIE, SONG FUJUN, LI WENCHAO, GUO JIANWEI, ZHANG JIANXIN, ZHANG SHOUJUN, LANG CHENGSHAN, QU GUANGCAO, YANG XILIANG, SHEN YINGKAI, LIU GUOHUA, CHI FENGLI, ZHANG YAN, GAO KAN, ZHANG XIAOWEN, PAN CHANGDE, PAN LINLIN, WAN XUEWEN

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Fast 3D gradient shimming by only 2×2 pixels in XY plane for NMR-solution samples von Liu, Guangcao, Qu, Xiaobo, Cai, Shuhui, Zhang, Zhiyong, Chen, Zhiwei, Cai, Congbo, Chen, Zhong

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