초록 ▼

An electro-hydraulic surface controlled subsurface safety valve is controllable entirely electrically. The actuator operates on an electrically actuated pressure pump and a supply of hydraulic fluid reservoired in the tool proximate to the safety valve. A dump valve is normally open so that if power

An electro-hydraulic surface controlled subsurface safety valve is controllable entirely electrically. The actuator operates on an electrically actuated pressure pump and a supply of hydraulic fluid reservoired in the tool proximate to the safety valve. A dump valve is normally open so that if power fails, pressure is released and the safety valve closes.

대표청구항 ▼

[ What is claimed is:] [1.]1. An actuation system for a downhole tool comprising:a downhole actuation fluid reservoir;a fluid pump in communication with said reservoir and in communication with said tool;a motor connected to said fluid pump;a draw sensor connected to said motor for automatic shut-of

[ What is claimed is:] [1.]1. An actuation system for a downhole tool comprising:a downhole actuation fluid reservoir;a fluid pump in communication with said reservoir and in communication with said tool;a motor connected to said fluid pump;a draw sensor connected to said motor for automatic shut-off of said motor; anda dump valve having access to pressurized fluid moving between said pump and said tool.