Preliminary estimation of the reservoir capacity and the longevity of the Baca Geothermal Field, New Mexico

Conference · Tue Jul 01 00:00:00 EDT 1980

OSTI ID:6809435

Bodvarsson, G S; Vonder Haar, S; Wilt, M; Tsang, C F

A 50 MW geothermal power plant is currently under development at the Baca site in the Valles Caldera, New Mexico, as a joint venture of the Department of Energy (DOE), Union Oil Company of California, and the Public Service Company of New Mexico (PNM). To date, over 20 wells have been drilled on the prospect, and the data from these wells indicate the presence of a high-temperature liquid dominated reservoir. Data from open literature on the field are used to estimate the amount of hot water in place (reservoir capacity) and the length of time the reservoir can supply steam for a 50 MW power plant (reservoir longevity). The reservoir capacity is estimated by volumetric calculations using existing geological, geophysical, and well data. The criteria used are described and the sensitivity of the results discussed. The longevity of the field is studied using a two-phase numerical simulator (SHAFT79). A number of cases are studied based upon different boundary conditions, and injection and production criteria. Constant or variable mass production is employed in the simulations with closed, semi-infinite or infinite reservoir boundaries. In one of the cases, a fault zone feeding the production region is modeled. The injection strategy depends on the available waste water. The results of these simulations are discussed and the sensitivity of the results, with respect to mesh size and the relative permeability curves used, are briefly studied.

• Research Organization: California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6809435
• Report Number(s): LBL-10656; CONF-800931-4
• Resource Relation: Conference: 55. Society of Petroleum Engineers of AIME annual technical conference and exhibition, Dallas, TX, USA, 21 Sep 1980
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
BACA GEOTHERMAL FIELD
GEOLOGY
LIFETIME
SIMULATION
CALDERAS
GEOPHYSICAL SURVEYS
GEOTHERMAL POWER PLANTS
GEOTHERMAL WELLS
HOT-WATER SYSTEMS
NEW MEXICO
REINJECTION
GEOTHERMAL FIELDS
GEOTHERMAL SYSTEMS
HYDROTHERMAL SYSTEMS
NORTH AMERICA
POWER PLANTS
SOUTHWEST REGION
SURVEYS
THERMAL POWER PLANTS
USA
WELLS
Geothermal Legacy
150904* - Geothermal Engineering- Geothermal Reservoir & Well Performance