Well blowout prevention device
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 includes a valve body inserted between the stuffing box and the production-tee, a valve which is selectively capable of being opened or closed in the valve body, means for actuating the valve, and a wear block abutting against a polish rod for sensing when the polish rod parts from the stuffing box. When the polish rod parts from the stuffing box, the lever causes the valve to rapidly close to prevent blowout of the fluid in the well bore. When the wear block wears down to a predetermined amount, the lever senses and effectuates a signaling system to indicate that the wear block should be replaced.
- Assignee:
- Marathon Oil Co
- Patent Number(s):
- US 4377206
- OSTI ID:
- 6329814
- Resource Relation:
- Patent File Date: Filed date 31 Oct 1980; Other Information: PAT-APPL-202539
- Country of Publication:
- United States
- Language:
- English
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