Fluid level controlled safety valve

Patent · Tue Jan 26 04:00:00 EST 1988

OSTI ID:5394349

Pringle, R E; Black, P W

A fluid level actuated well safety valve for use in a fluid well conduit through which fluid is pumped is described comprising, a body adapted to be inserted into the conduit, the body including a passageway for the passage of well fluid upwardly through the conduit, a valve in the passageway including a valve seat and a valve element for opening and closing the passageway, biasing means in the body and connected to the valve element and acting in a direction to open the valve, and fluid responsive means connected to the valve element and positioned downstream of the valve and the body including port means between the fluid responsive means and the exterior of the body for communicating the hydrostatic force of the fluid in the conduit to the fluid responsive means for moving the fluid responsive means in a direction to close the valve when the hydrostatic fluid pressure overcomes the biasing means.

• Assignee: Camco, Inc., Houston, TX
• Patent Number(s): US 4721162
• OSTI ID: 5394349
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
HYDRAULICS
HYDROSTATICS
LEVELS
MECHANICS
NATURAL GAS WELLS
OIL WELLS
OPERATION
PUMPING
RELIEF VALVES
VALVES
WELLS