Casing head is jackscrew for anti -abrasion sleeve
SUN AISHENG, WU PENGCHENG, LU JUN'AN, LI XINGXIN, LIU SHUANGWEI, WANG YANMIN
Year of Publication 06.06.2017
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Year of Publication 06.06.2017
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Method and device for determining density of drilling fluid of salt water layer
CHI JUN, LI GAO, SUN AISHENG, XU ZHIXIONG, WANG YUHAI, ZHU JIANGBO, ZHOU JIAN, HUANG HAITAO, TIAN LEI, LU JUN'AN, WANG YANMIN, YIN DA, LI WEIDONG, LIU DEZHI
Year of Publication 15.12.2017
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Year of Publication 15.12.2017
Patent
Board resetting means is turned over to magnetism that magnetic level gauge used
HAN FUQUAN, WEN SIMING, ZHOU XIAO, LIN GUOQIANG, TENG BODONG, MA XIAOXI, QIAN SHUCHENG, ZHONG BOWEN, YUAN LIANG, ZHAO DONGLI, GAO CHANGBAO, WEN YUANJING, SUN FENGZHI, ZHANG XIAOJIAN, YANG JIALIN, HE YUJIE, CHENG PENG, FAN YUTAO, LU JUN'AN, WANG HONGYU, MOU XIAOBO, CHEN SHAOYUN, YANG HUAHONG
Year of Publication 03.04.2018
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Year of Publication 03.04.2018
Patent