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Title: Model study of historical injection in the southeast Geysers

A three component model study of the historical injection of two wells in the Unit 13 area demonstrates that the recovery of injection derived steam is influenced by the geologic structure of the bottom of the reservoir and the relative location of injection wells. The migration of injectate from the first injection well, located up structure from the second, quenched the area around the second injector before it started operation. While both wells had similar cumulative mass injected, nearly five times more injection derived steam is recovered from the first injector than the-second. Sensitivity runs were made to three cases of increasing matrix capillary pressure. The recovery of injection derived steam increases with higher values of capillarity. The interaction of structure at the bottom of the reservoir, injection well locations, and matrix capillarity all influence the recovery efficiency of injected as steam. The model developed in this study will be used to evaluate injection strategies at The Geysers.
Authors:
Publication Date:
OSTI Identifier:
10165261
Report Number(s):
EGG-M--92005; CONF-920119--3
ON: DE92017896
DOE Contract Number:
AC07-76ID01570
Resource Type:
Conference
Resource Relation:
Conference: 17. workshop on geothermal reservoir engineering,Stanford, CA (United States),29-31 Jan 1992; Other Information: PBD: [1992]
Research Org:
EG and G Idaho, Inc., Idaho Falls, ID (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; STEAM; MATHEMATICAL MODELS; INJECTION; WATER RESERVOIRS; GEYSERS; WELLS; RESERVOIR FLUIDS; GEOLOGIC STRUCTURES Geothermal Legacy 150200; GEOLOGY AND HYDROLOGY OF GEOTHERMAL SYSTEMS