Single action pneumatic powered spring retractable pump
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 during 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-84-163723
- Patent Number(s):
- US 4445819
- OSTI ID:
- 6785657
- Resource Relation:
- Patent File Date: Filed date 1 Feb 1982; Other Information: PAT-APPL-344359
- Country of Publication:
- United States
- Language:
- English
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Lightweight extendable and retractable pole
Lightweight extendable and retractable pole
Related Subjects
03 NATURAL GAS
PUMPS
DESIGN
PNEUMATIC MOTORS
AUTOMATION
COMPARATIVE EVALUATIONS
MECHANICS
NATURAL GAS WELLS
OIL WELLS
PISTONS
VALVES
WELL RECOVERY EQUIPMENT
CONTROL EQUIPMENT
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
MOTORS
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing