Method for troubleshooting gas-lift wells
Patent
·
OSTI ID:5145445
This paper discusses a method of troubleshooting a gas-lift well in a subterranean reservoir to determine whether a gas-lift system for the gas lift-well is operating properly comprising: determining an expected response time for the gas-lift well, which would indicate that only an appropriate gas-lift valve is open; injecting into lift-gas supplied to the gas-lift well a quantity of an injected fluid, which is at least one of (1) a tracer and (2) a tracer generator, in a quantity which is sufficient to be detected in a produced fluid recovered from the well; detecting the presence of the tracer in the produced fluid as a function of time; determining an actual response time for the well; and determining whether the gas-lift system is operating properly by comparing the actual response time to the expected response time.
- Assignee:
- Shell Oil Co., Houston, TX (USA)
- Patent Number(s):
- A; US 4972704
- Application Number:
- PPN: US 7-323600
- OSTI ID:
- 5145445
- Country of Publication:
- United States
- Language:
- English
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