Reciprocating down-hole sand pump

Patent · Tue Apr 28 04:00:00 UTC 1987

OSTI ID:6591552

Ruhle, J L

This patent describes the invention of a continuously-operated reciprocating down-hole sand pump comprising: a steel polished plunger pipe that strokes back and forth within a steel honed pump barrel, and is equipped with a self-lubricating fluorocarbon V-ring system that is pressure-actuated during compression strokes; the self-lubricating fluorocarbon V-ring system also is self-actuated by means of coil springs to provide wiping action to the polished plunger pipe during suction strokes; the self-lubricating fluorocarbons V-ring system also self-adjusts by means of coil springs located adjacent the fluorocarbon V-ring so as to automatically compensate for V-ring wear; and the self-lubricating fluorocarbon V-ring system also is designed in such a manner so as to eliminate voids and discourage the extrusion of V-rings in high temperature and high-pressure applications.

• Assignee: NOV; EDB-87-101332; NOV-87-060519
• Patent Number(s): US 4661052
• OSTI ID: 6591552
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALLOYS
CARBON COMPOUNDS
DIRECTIONAL DRILLING
DRILL BITS
DRILL PIPES
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
FLUORINE COMPOUNDS
HALOGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LUBRICATION
OIL WELLS
PIPES
PRESSURE EFFECTS
PUMPS
SAND
STEELS
WELLS