Lithology Determination from Digitized Well Logs -- Examples from ORE-IDA No. 1 Geothermal Well, Ontario, Oregon
- Key words
- Exploration; USA; Oregon; Ontario; Lithology; Cuttings; Gamma Ray Log; Density Log; Neutron Log
- Location
- Ontario, Oregon
- Conference
- Geothermal Resources Council Transactions
- Year
- 1981
- Session
- Lithology; Exploration; Geological surveys; Well logging
- Language
- English
Abstract
This paper presents some of the advantages and pitfalls of lithology determination from digitized well logs. Examples are provided from the Ore-Ida No. 1 geothermal well in Ontario, Oregon, drilled through a sequence of siltstone, clay, tuff and basalt/andesite. The use of histograms and cross plots to differentiate various lithological units and to identify alteration is illustrated.
Copyright 1981, Geothermal Resources Council. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.