Permeability-thickness determination from transient production response at the Southeast Geysers
Conference
·
OSTI ID:494435
- Idaho National Engineering Lab., Idaho Falls, ID (United States)
The Fetkovich production decline curve analysis method was extended for application to vapor-dominated geothermal reservoirs for the purpose of estimating the permeability-thickness product (kh) from the transient production response. The analytic dimensionless terms for pressure, production rate, decline rate, and decline time were derived for saturated steam using the real gas potential and customary geothermal production units of pounds-mass per hour. The derived terms were numerically validated using {open_quotes}Geysers-like{close_quotes} reservoir properties at initial water saturation of 0 and at permeabilities of 1, 10, and 100 mD. The production data for 48 wells in the Southeast Geysers were analyzed and the permeability-thickness products determined from the transient production response using the Fetkovich production decline type curve. The kh results were in very good agreement with the published range at the Southeast Geysers and show regions of high permeability-thickness.
- DOE Contract Number:
- AC07-94ID13223
- OSTI ID:
- 494435
- Report Number(s):
- CONF-960913--
- Country of Publication:
- United States
- Language:
- English
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