Horizontal-to-vertical drilling module for deep well
AssigneesChina National Offshore Oil Corporation, China Oilfield Services Limited
InventorsYongren Feng, Jibin Zou, Tiemin Liu, Xingfang Wu, Xiaodong Chu, Zhibin Tian, Guoqiang Zhang, Zhongtian Hao, Guangshuai Li, Yiming Wu
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