Differential gas lift system
Patent
·
OSTI ID:5002963
A well-bore gas-lift system is described for lifting well-bore liquid through a tubing string to the well-bore top. Two differential valves feed gas from the tubing-casing annulus into the tubing string, one valve being arranged to operate at a normal high pressure differential setting and the other valve at a very low pressure differential setting. The high-set valve first opens and assists the low-set valve to then open, the low-set valve first closes and assists the high-set valve to then close. (18 claims)
- Assignee:
- Baker Oil Tools Inc.
- Patent Number(s):
- US 3523744
- OSTI ID:
- 5002963
- Country of Publication:
- United States
- Language:
- English
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