Horizontal-to-vertical drilling module for deep well

Assignee

• China National Offshore Oil
• China Oilfield Services Limited

Inventors

• Yongren Feng (18 patents)
• Jibin Zou (10 patents)
• Tiemin Liu (9 patents)
• Xingfang Wu (7 patents)
• Xiaodong Chu (10 patents)
• Zhibin Tian (13 patents)
• Guoqiang Zhang (43 patents)
• Zhongtian Hao (2 patents)
• Guangshuai Li (1 patents)
• Yiming Wu (22 patents)

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