Annulus pressure controlled reversing valve

Patent · Tue Oct 02 04:00:00 EDT 1984

OSTI ID:6131230

Upchurch, J M

In accordance with an illustrative embodiment of the present invention, a pressure controlled reversing valve includes a housing defining a reversing port, a springloaded sleeve valve normally closing the reversing port, means for locking the sleeve valve in the closed position, an operator mandrel mounted for reciprocating movement within the housing, clutch means for shifting the locking means with the operator mandrel as it moves in one axial direction, means for urging the operator mandrel in the opposite axial direction, and means responsive to a series of excess annulus pressure changes for reciprocating the operator mandrel to causing shifting of the locking means by an amount sufficient to disable the same and permit the valve sleeve to open.

• Assignee: Schlumberger Technology Corporation
• Patent Number(s): US 4474242
• OSTI ID: 6131230
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTAINERS
CONTROL
CONTROL EQUIPMENT
DRILL PIPES
DRILL STEM TESTING
DRILLING EQUIPMENT
EQUIPMENT
FLOW REGULATORS
MATERIALS HANDLING EQUIPMENT
OPERATION
PIPES
PRESSURE CONTROL
SLEEVES
TESTING
VALVES
WELL CASINGS
WELL LOGGING EQUIPMENT