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US 4,377,206 AGranted
Well blowout prevention device
AssigneeMarathon Oil Company
InventorRoland A. Chambers
Life of this patent
Estimating the term…
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AssigneeMarathon Oil Company
InventorRoland A. Chambers
Estimating the term…
The invention provides a device for preventing well blowouts in sucker rod pumping systems and particularly for sensing the parting of the polish rod from the stuffing box and preventing fluid flow through the stuffing box to the atmosphere. The device (200) includes a valve body (220) inserted between the stuffing box (70) and the production-tee (30), a valve (310, 320) which is selectively capable of being opened or closed in the valve body (220), means (230, 232) for actuating the valve (320), and a wear block (330) abutting against a polish rod (50) for sensing when the polish rod (50) parts from the stuffing box (70). When the polish rod (50) parts from the stuffing box (70), the lever (230) causes the valve (320) to rapidly close to prevent blowout of the fluid in the well bore (80). When the wear block (330) wears down to a predetermined amount, the lever (230) senses and effectuates a signaling system (240 ) to indicate that the wear block (330) should be replaced.
A well blowout prevention device (200) for a sucker rod well pumping system (10) on a well bore (80) for pumping fluid (100) contained in said well bore through a production-tee (30), said pumping system (10) having a reciprocating polish rod (50) connected through a stuffing box (70) to said production-tee (30), said device (200) comprising:
A well blowout prevention device (200) for a sucker rod well pumping system (10) on a well bore (80) for pumping fluid (100) contained in said well bore (80) through a production-tee (30), said pumping system (10) having a reciprocating polish rod (50) connected through a stuffing box (70) to said production-tee (30), said device (200) comprising:
A well blowout prevention device (200) for a sucker rod well pumping system (10) on a well bore (80) for pumping fluid (100) contained in said well bore (80) through a production-tee (30), said pumping system (10) having a reciprocating polish rod (50) connected through a stuffing box (70) to said production-tee (30), said device (200) comprising:
Dependencies are inferred from the claim text.