Geologic Characteristics of a Portion of the Salton Sea Geothermal Field
- Key words
- Exploration; Alteration; Cores; Fractures; Log; Mud log; Porosity; Sedimentary; SP; California; USA
- Location
- Imperial Valley; Salton Sea, California
- Conference
- Geothermal Resources Council Transactions
- Year
- 1977
- Session
- Exploration; Geological surveys; Well logging; Petrology/pet
- Language
- English
Abstract
Petrologic analysis of drill cutting samples from the Magmamax Nos. 2 and 3 and Woolsey No. 1 well in the Salton Sea Geothermal Field has resulted in the categorization of the sedimentary sequence. The cap rock extends to 325 m and unaltered reservoir rocks occur to approximately 900 m. The lowermost sequence is hydrothermally altered reservoir rocks. Laboratory measurements of core samples indicate a reduction in porosity with depth and fracture porosity appears to contribute to the total porosity of the system. The geologic picture that emerges from SP log correlation is that of a structural basin whose axis lies to the northwest of Magmamax No. 2.
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