Plunger valve apparatus for oil well pump

Patent · Tue Sep 08 04:00:00 EDT 1987

OSTI ID:6054292

Horton, J B

A valve is described comprising: a casing extending into a body of liquid; valve seat means fixedly mounted within the casing; a ball positioned within the casing above the valve seat means; a piston movably mounted within the casing below the valve seat means and adapted for reciprocation within the casing in response to fluid pressure. The valve is closed by the ball engaging the valve seat means, and opened by a drop in fluid pressure above the piston causing the piston to rise, thereby lifting the ball away from the valve seat means; and a ball protection shield having a lower open end and an upper closed end fixedly mounted above the valve seat means and defining an enclosure in which the steel ball is contained. The shield has at least one aperture to permit fluid to flow through the shield. The aperture is positioned entirely below the level to which the piston lifts the ball when the piston is in an elevated position.

• Assignee: NOV; NOV-87-083447; EDB-88-000168
• Patent Number(s): US 4691735
• OSTI ID: 6054292
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
APERTURES
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
HYDRAULICS
INSTALLATION
LIQUID FLOW
MECHANICS
OIL WELLS
OPENINGS
OPERATION
PISTONS
POSITIONING
PRESSURE EFFECTS
PUMPS
SHIELDS
SPHERES
VALVES
WELLS