Downhole hydraulic actuated pump

Patent · Tue Sep 06 04:00:00 EDT 1988

OSTI ID:6468121

Roeder, G K

This patent describes a downhole hydraulically actuated pump assembly of the type having a main housing within which an engine and pump is enclosed; a connecting rod, an engine piston, a pump plunger, means by which the engine and connecting rod reciprocate the pump plunger and thereby produces fluid; the main housing has a lower end having a formation fluid inlet; and upper end having a power fluid inlet; and, a produced fluid outlet; the plunger divides one marginal end of the housing into upper and lower production chambers; the lower end of the connecting rod is hollow and extends through the plunger into fluid communication with the formation fluid inlet to provide a source of formation fluid for the upper and lower production chambers; a traveling value assembly contained within the plunger and arranged to transfer formation fluid from the hollow rod, through the plunger, and into the upper and lower production chambers, respectively, as the plunger upstrokes and downstrokes; produced fluid valve means by which fluid flows from the upper and lower production chambers and through the produced fluid outlet.

• Assignee: NOV; EDB-89-030381; NOV-89-039262
• Patent Number(s): US 4768589
• OSTI ID: 6468121
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLOW REGULATORS
FLUID MECHANICS
HYDRAULICS
MECHANICS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PUMPING
PUMPS
ROD PUMPS
VALVES
WELLS