Single action pneumatic powered spring retractable pump

Patent · Tue May 07 00:00:00 EDT 1985

OSTI ID:6228280

Walling, J B

A downhole reciprocating piston pump is driven pneumatically from a surface facility for producing formation fluid from a well bore. The pump is cycled automatically without the use of electrical controls or components. A piston is received within a pump chamber thereby defining a power chamber and a production chamber, with the piston being movable between a retracted position and an extended position. High pressure air accumulated in a power fluid reservoir is admitted into the power chamber through a delivery port to extend the piston in a production stroke, and is vented from the power chamber through a relief conduit retraction of the piston. The delivery port is opened and closed and the vent port is closed and opened by first and second shuttle valves which are actuated by the piston as it nears the limit of its stroke in extension and retraction, respectively, thereby pressurizing and relieving the power chamber automatically.

• Assignee: EDB-86-007882
• Patent Number(s): US 4515532
• OSTI ID: 6228280
• Resource Relation: Patent File Date: Filed date 12 Dec 1983; Other Information: PAT-APPL-560315
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
WELL RECOVERY EQUIPMENT
OIL WELLS
PUMPS
PNEUMATICS
AIR FLOW
AUTOMATION
COMPRESSION
PISTONS
RESERVOIR FLUIDS
VALVES
CONTROL EQUIPMENT
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
FLUIDS
GAS FLOW
MECHANICS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing