Orifice well safety valve with release mechanism

Patent Application · Tue Jul 09 00:00:00 EDT 1991

OSTI ID:5570157

Blizzard, Jr, W A

This patent describes an orifice well safety valve. It comprises a housing having a bore therethrough, a valve element connected to the housing and movable between open and closed positions in the bore, a flow tube telescopically movable in the housing for controlling the movement of the valve element, coiled spring means positioned between the housing and the flow tube for yieldably moving the tube in a direction for opening the valve, a choke bean connected to the flow tube, releasable latch means in the housing releasably engaging the flow tube, belleville spring means biasing the latch means in a direction yieldably opposing the movement of the tube in a direction for closing the valve, the belleville spring remaining out of engagement with the flow tube.

• Assignee: Camco International Inc., Houston, TX (USA)
• Application Number: PPN: US 7-550936
• OSTI ID: 5570157
• Resource Relation: Patent File Date: 11 Jul 1990
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OIL WELLS
FLOW REGULATORS
PIPELINES
VALVES
ENGINEERED SAFETY SYSTEMS
ORIFICES
PIPE FITTINGS
SAFETY
WELL DRILLING
CONTROL EQUIPMENT
DRILLING
EQUIPMENT
OPENINGS
WELLS
022000* - Petroleum- Transport
Handling
& Storage
020300 - Petroleum- Drilling & Production
020600 - Petroleum- Health & Safety