Gas lift valve
Patent
·
OSTI ID:6284560
This is a pressure-balanced, quick and full-opening gas lift valve. The valve is connected in the tubing string and has a passage with a valve seat in the passage. A valve member is mounted for axial movement between an open and closed position in the seat. Valve-closing means consist of a bellows operatively connected to the valve member for urging it toward the closed position with a predetermined force. Valve-opening means consist of a second bellows operatively connected to the valve member for urging it toward the open position in response to differential fluid pressure. Operation of the valve is substantially unaffected by changes of working pressure of the gas in the well casing. (14 claims)
- Assignee:
- TUL; EDB-81-108814
- Patent Number(s):
- US 3363581
- OSTI ID:
- 6284560
- Country of Publication:
- United States
- Language:
- English
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