Energy storing hydraulic lift pump for oil wells
An energy storable source and sink for high pressure hydraulic fluid is described comprising, high pressure hydraulic fluid input/output supply means and low pressure hydraulic fluid input/output supply means, a hydraulic pump communicating between the high pressure supply means and the low pressure supply means, a hydraulic pump/motor communicating between the high pressure supply means and the low pressure supply means, pump control means connected to the pump and adapted to selectably cause the pump to provide high pressure fluid to the high pressure supply means, pump/motor control means connected to the pump/motor and adapted to selectably cause the pump/motor to provide high pressure fluid to the high pressure supply means or to accept high pressure fluid from the supply means, and a rotatable mass, rotatable shaft connected to the rotatable mass.
- Assignee:
- NOV; EDB-88-098064; NOV-88-006559
- Patent Number(s):
- US 4724672
- OSTI ID:
- 5239916
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
CONTROL SYSTEMS
DESIGN
ELECTRIC MOTORS
ENERGY STORAGE
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLUID MECHANICS
HYDRAULIC EQUIPMENT
HYDRAULICS
MACHINE PARTS
MECHANICS
MOTORS
OIL WELLS
PRESSURE DEPENDENCE
PRESSURIZING
PUMPING
PUMPS
SHAFTS
STORAGE
WELL RECOVERY EQUIPMENT
WELLS