Externally Assisted Valve for a Positive Displacement Pump
AssigneeSchlumberger Technology Corporation
InventorsToshimichi Wago, Philippe Gambier, Jean-Louis Pessin, Rajesh Luharuka
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Abstract
A positive displacement pump having a valve with an actuation guide for assisting its actuation. The valve may be configured for controlling fluid communication relative to a chamber of the pump with the valve actuation guide positioned external to the chamber and configured to assist in the controlling. The valve actuation guide itself may include an arm extending into a valve actuation assembly below the valve. In such embodiments, the arm may be reciprocated by crankshaft, hydraulic, or other means. Alternatively, the valve actuation assembly may include electromagnetic means for assisting in actuation of the valve.
Claims22
A positive displacement pump comprising:
- a housing for a pressurizable chamber;
- a valve of said housing for controlling fluid communication with the chamber;
- and
- a valve actuation guide external to the chamber and for coupling to said valve for assisting the controlling.
A positive displacement pump assembly for positioning at an oilfield to deliver a fluid to a well thereat during an operation, the positive displacement pump assembly comprising:
- a housing for a pressurizable chamber;
- a supply of the fluid adjacent the pressurizable chamber;
- a valve of said housing for controlling access by the fluid to the pressurizable chamber;
- and
- a valve actuation guide external to the pressurizable chamber for coupling to the valve to assist the controlling.
A valve actuation guide assembly for positioning adjacent a housing for a pressurizable chamber of a positive displacement pump, the assembly comprising an actuation guide for coupling to a valve of the housing for controlling fluid communication with the chamber, said actuation guide to assist the controlling.
Dependencies are inferred from the claim text.