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On January 19, 2018, Cavaville successfully completed the trajectory control services for Well Yue*** on one trip, with hole size 104.8mm, TD 7409m, downhole time 94h and circulating temperature 155℃. The imported high-performance motor Cavaville applied can achieve average ROP 2.5 times faster than the regular drilling tools and 1.5 times faster than the domestic motor of the same size, which greatly shortened the operation time. In addition, Cavaville applied imported customized HTHP-resistant slimhole MWD, so as to guarantee strong signal and high signal accuracy. Cavaville made another new record in the slimhole directional drilling in China.