China National Offshore Oil Corporation

China Oilfield Services, Limited

Zhongtian Hao

Yongren Feng

Xiaodong Chu

Zhibin Tian

Tiemin Liu

Xingfang Wu

Minggao Zhou

Guiqing Hao

Jibin Zou

Guoqiang Zhang

Guangshuai Li

Yiming Wu

Zhijie Yu

A horizontal-to-vertical drilling module for a deep well includes a fixed plate () provided with a first guide hole having a turning section (), a core breaking section () and a moving section (); a movable plate () movably mounted on one side of the fixed plate and provided with a second guide hole having a turning driving section (), a core breaking driving section () and a moving driving section (), the projection of the first guide hole on the movable plate intersecting with the second guide hole; a coring module () positioned at the other side of the fixed plate and provided with a moving column () on the side facing the fixed plate; and a moving slider () having an open groove (), the moving slider being installed in the first guide hole and rotatably connected to the coring module.

Horizontal-to-vertical drilling module for deep well

A high-pressure fluid mixing pump control system and a fluid suction control method, the system comprises a transmission threaded rod and a resolver sensor, wherein: one end of the transmission threaded rod is connected to an oil cylinder piston of a mixing pump, while the other end of the transmission threaded rod is connected to the resolver sensor either directly or via a rotary element that rotates coaxially with the transmission threaded rod. The high-pressure fluid mixing pump control system implements precision control via a mechanical means, converts a linear motion of the piston into a rotary motion, and utilizes the resolver sensor for precision measurement of a rotation angle, thus acquiring a piston displacement amount, and finally acquiring a suction volume. At the same time, an accelerator and an electric brake are also designed, for controlling starting and stopping of the mixing pump.

High-pressure fluid mixing pump control system and fluid suction control method

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Langfang, China

Zhongtian Hao