This dataset contains well log observations compiled by the Department of Geosciences, Western Michigan University, and published as a Web feature service for the National Geothermal Data System. Fields in the Well Log Observation Content Model will become XML elements in interchange documents for WMS simple features provided by a node in the USGIN network. Each observation includes a Log URI, API Number, Latitude and Longitude spatially referenced to EPSG: 4326 (for interoperability). The data contained in the submitted dataset is available as an Excel Spreadsheet, ESRI service, WMS and WFS service. Link to Well Log Observation Content Model: http://stategeothermaldata.org/data_delivery/content_models/well_log_observation.

This dataset contains well log observations compiled by the Tennessee Divison of Geology, and published as a Web feature service for the National Geothermal Data System. Fields in the Well Log Observation Content Model will become XML elements in interchange documents for WMS simple features provided by a node in the USGIN network. Each observation includes a Log URI, API Number, Latitude and Longitude spatially referenced to EPSG: 4326 (for interoperability). The data contained in the submitted dataset is available as an Excel Spreadsheet, ESRI service, WMS and WFS service. Link to Well Log Observation Content Model: http://stategeothermaldata.org/data_delivery/content_models/well_log_observation.

This spreadsheet is a compilation of borehole temperature observations compiled by the Washington Division of Geology and Earth Resources, published as a Web feature service for the National Geothermal Data System. The document contains 6 worksheets, including information about the template, notes related to revisions of the template, Resource provider information, the data, a field list (data mapping view) and a worksheet with vocabularies for use in populating the spreadsheet (data valid terms). Data from 1177 Oil and Gas wells and 2916 Gradient wells are included. Fields in the data table include Well Name, Maximum Recorded Temperature, Measured Temperature, Measurement Procedure, and Information Source.

This paper presents the initial results of a survey of the occurrence and characteristics of geopressured fluid resources in California using the publicly-available database involving more than 150,000 oil and gas wells drilled in the State. Of the 975 documented on-shore oil and gas pools studied, about 42% were identified as potentially geopressured. Geothermal gradients in California oil and gas fields lie within the normal range of 1°F to 2°F per 100 feet. Except for the Los Angeles Basin, there was no evidence of higher temperatures or temperature gradients in geopressured pools. The porosity of geopressured pools shows the same normal distribution as for normal pressured pools, with a mode in the range of 20 to 25%. The salinity distribution of both the geopressured and normal pressured pools appear to be bimodal, each with two peak ranges of 0 to 10,000 and 25,000 to 30,000 ppm.