Method for pumping a liquid from a well and apparatus for use therein

Patent · Tue Sep 27 00:00:00 EDT 1983

OSTI ID:5516127

Stanton, G E

A pumping method, principally for oil, allows the sucker rod to fall under gravity for the first part of the downward stroke, then decelerates the sucker rod to a slow rate of descent, so creating a pause in the sucker rod's motion. Shock-absorbing means are provided to eliminate the impulsive loadings imposed upon the sucker rod at either extremity of its motion in conventional pumping methods. Hydraulically and mechanically-driven apparatus is disclosed for carrying out the method.

• Assignee: Nujack Oil Pump Corp.
• Patent Number(s): US 4406597
• OSTI ID: 5516127
• Resource Relation: Patent File Date: Filed date 27 Oct 1980; Other Information: PAT-APPL-200899
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
PUMPING
PUMPS
SHOCK ABSORBERS
DESIGN
HYDRAULIC EQUIPMENT
PISTONS
VALVES
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
WELLS
020300* - Petroleum- Drilling & Production