This spreadsheet is a compilation of well headers compiled by the New Mexico Bureau of Geology and Mineral 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 23111 wells are included. Fields in the data table include ObservationURI, WellName , APINo, HeaderURI, Other ID, OtherName, BoreholeName, Label, Operator, LeaseOwner, LeaseNo, SpudDate, EndedDrillingDate, WellType, Status, CommodityOfInterest, StatusDate, Function, Production , ProducingInterval, ReleaseDate, Field, OtherLocationName, County, State, PLSS_Meridians, TWP, RGE, Section_, SectionPart, Parcel, UTM_E, UTM_N, UTMDatumZone, LatDegree, LongDegree, SRS, LocationUncertaintyStatement, LocationUncertaintyCode, LocationUncertaintyRadius, DrillerTotalDepth, DepthReferencePoint, LengthUnits, WellBoreShape, TrueVerticalDepth, ElevationKB, ElevationDF, ElevationGL, FormationTD, BitDiameterCollar, BitDiameterTD, DiameterUnits, Notes, MaximumRecordedTemperature , MeasuredTemperature, CorrectedTemperature, TemperatureUnits, TimeSinceCirculation, CirculationDuration, MeasurementProcedure, CorrectionType, DepthOfMeasurement, MeasurementDateTime, MeasurementFormation, MeasurementSource, RelatedResource, CasingLogger, CasingBottomDepthDriller, CasingTopDepth, CasingPipeDiameter, CasingWeight, CasingWeightUnits, CasingThickness, DrillingFluid, Salinity, MudResisitivity, Density, FluidLevel, pH, Viscosity, FluidLoss, InformationSource.

Data collected since 1985 from test drilling, fluid sampling, and geologic and geophysical investigations provide a clearer definition of the hydrothermal system in Long Valley caldera than was previously available. This information confirms the existence of high-temperature (> 200°C) reservoirs within the volcanic fill in parts of the west moat. These reservoirs contain fluids which are chemically similar to thermal fluids encountered in the central and eastern parts of the caldera. The roots of the present-day hydrothermal system (the source reservoir, principal zones of upflow, and the magmatic heat source) most likely occur within metamorphic basement rocks beneath the western part of the caldera. Geothermometer-temperature estimates for the source reservoir range from 214 to 248°C. Zones of upflow of hot water could exist beneath the plateau of moat rhyolite located west of the resurgent dome or beneath Mammoth Mountain. Lateral flow of thermal water away from such upflow zones through reservoirs in the Bishop Tuff and early rhyolite accounts for temperature reversals encountered in most existing wells. Dating of hot-spring deposits from active and inactive thermal areas confirms previous interpretations of the evolution of hydrothermal activity that suggest two periods of extensive hot-spring discharge, one peaking about 300 ka and another extending from about 40 ka to the present. The onset of hydrothermal activity around 40 ka coincides with the initiation of rhyolitic volcanism along the Mono-Inyo Craters volcanic chain that extends beneath the caldera's west moat.

This dataset contains information on the location and heat characteristics of known geothermal and heat flow wells in the state of Washington. This dataset includes borehole and water well temperature information obtained from the Washington State Department of Ecology (ECY), Washington Division of Geology and Earth Resources Open File Report 94-11 (OFR 94-11), Southern Methodist University (SMU) Regional Heat Flow Database, and the U.S. Geological Survey. We also include unpublished data on file with the Division. Data from these sources were incorporated into this database only if a calculated gradient or an assumed bottom-hole temperature were recorded. We use the term 'assumed' to denote that the location of the temperature measurement within the borehole is assumed to be the bottom, although this is generally unknown; temperatures from this dataset should be considered mininum bottom-hole temperatures. Scanned geophysical logs are available for some of these locations through related data tables. In addition, temperature-depth plots are available for many boreholes. Much of the data is located within central and eastern Washington.

Collection of 80 Temperature depth logs from a geothermal well field in Long Valley, California. Spreadsheets include temperature at depth and graphs of data. Data courtesy of the US Geological Survey.

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.

This spreadsheet is a compilation of borehole temperature observations compiled by the Kentucky Geological Survey, 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 11,219 wells are included. Fields in the data table include ObservationURI, WellName, APINo, HeaderURI, OtherID, OtherName, BoreholeName, Operator, LeaseOwner, LeaseNo, SpudDate, EndedDrillingDate, WellType, Status, CommodityOfInterest, StatusDate, Function, Production, Field, County, State, PLSS_Meridians, TWP, RGE, Section, SectionPart, Parcel, UTM_E, UTM_N, UTMDatumZone, LatDegree, LongDegree, SRS, LocationUncertaintyStatement, DrillerTotalDepth, DepthReferencePoint, Shape, TrueVerticalDepth, LengthUnits, ElevationKB, ElevationDF, ElevationGL, BitDiameterCollar, BitDiameterTD, DiameterUnits, Notes, MaximumRecordedTemperature, MeasuredTemperature, CorrectedTemperature, TemperatureUnits, TimeSinceCirculation, MeasurementProcedure, CorrectionType, DepthOfMeasurement, MeasurementDateTime, MeasurementFormation, MeasurementSource, CasingLogger, CasingDepthDriller, CasingPipeDiameter, CasingWeight, CasingWeightUnits, CasingThickness, InformationSource, DrillingFluid, Salinity, MudResisitivity, Density, FluidLevel, pH, Viscosity, FluidLoss, MeasurementNotes.

This spreadsheet is a compilation of borehole temperature observations compiled by the Arizona Geological Survey, 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 1954 wells are included. Fields in the data table include ObservationURI, WellName, APINo, HeaderURI, OtherID, OtherName, BoreholeName, Operator, LeaseOwner, LeaseNo, SpudDate, EndedDrillingDate, WellType, Status, CommodityOfInterest, StatusDate, Function, Production, Field, County, State, PLSS_Meridians, TWP, RGE, Section, SectionPart, Parcel, UTM_E, UTM_N, UTMDatumZone, LatDegree, LongDegree, SRS, LocationUncertaintyStatement, DrillerTotalDepth, DepthReferencePoint, Shape, TrueVerticalDepth, LengthUnits, ElevationKB, ElevationDF, ElevationGL, BitDiameterCollar, BitDiameterTD, DiameterUnits, Notes, MaximumRecordedTemperature, MeasuredTemperature, CorrectedTemperature, TemperatureUnits, TimeSinceCirculation, MeasurementProcedure, CorrectionType, DepthOfMeasurement, MeasurementDateTime, MeasurementFormation, MeasurementSource, CasingLogger, CasingDepthDriller, CasingPipeDiameter, CasingWeight, CasingWeightUnits, CasingThickness, InformationSource, DrillingFluid, Salinity, MudResisitivity, Density, FluidLevel, pH, Viscosity, FluidLoss and MeasurementNotes.

The publicly available database on oil and gas fields in California provides a significant and consistent source of information which can be used to evaluate geopressure. A total of 410 pools have pressure gradients exceeding 0.45 psi/foot; these are considered to be potentially geopressured. At least 70 of these have pressures distinctly higher than predicted by the regional hydrostatic gradient, and 8 pools are super pressured.

This spreadsheet is a compilation of borehole observations compiled by the Ohio Department of Natural 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 334 wells are included. Fields in the data table include ObservationURI, WellName , APINo, HeaderURI, OtherID, OtherName, BoreholeName, Operator, LeaseOwner, LeaseNo, SpudDate, EndedDrillingDate, WellType, Status, CommodityOfInterest, StatusDate, Function, Production , Field, County, State, PLSS_Meridians, TWP, RGE, Section, SectionPart, Parcel, UTM_E, UTM_N, UTMDatumZone, LatDegree, LongDegree, SRS, LocationUncertaintyStatement, DrillerTotalDepth, WellboreShape, TrueVerticalDepth, LengthUnits, ElevationGL, BitDiameterCollar, BitDiameterTD, DiameterUnits, Notes, MaximumRecordedTemperature , MeasuredTemperature, CorrectedTemperature, TemperatureUnits, TimeSinceCirculation , CirculationDuration, MeasurementProcedure, CorrectionType, DepthOfMeasurement, MeasurementDateTime, MeasurementFormation, MeasurementSource, CasingLogger, CasingDepthDriller, CasingPipeDiameter, CasingWeight, CasingWeightUnits, CasingThickness, DrillingFluid, Salinity, MudResisitivity, Density, FluidLevel, pH, Viscosity, FluidLoss, InformationSource.

This spreadsheet is a compilation of borehole temperature observations compiled by the West Virginia Geological and Economic Survey, 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 48 wells are included. Fields in the data table include ObservationURI, WellName, APINo, HeaderURI, OtherID, OtherName, BoreholeName, Operator, LeaseOwner, LeaseNo, SpudDate, EndedDrillingDate, WellType, Status, CommodityOfInterest, StatusDate, Function, Production, Field, County, State, PLSS_Meridians, TWP, RGE, Section, SectionPart, Parcel, UTM_E, UTM_N, UTMDatumZone, LatDegree, LongDegree, SRS, LocationUncertaintyStatement, DrillerTotalDepth, DepthReferencePoint, Shape, TrueVerticalDepth, LengthUnits, ElevationKB, ElevationDF, ElevationGL, BitDiameterCollar, BitDiameterTD, DiameterUnits, Notes, MaximumRecordedTemperature, MeasuredTemperature, CorrectedTemperature, TemperatureUnits, TimeSinceCirculation, MeasurementProcedure, CorrectionType, DepthOfMeasurement, MeasurementDateTime, MeasurementFormation, MeasurementSource, CasingLogger, CasingDepthDriller, CasingPipeDiameter, CasingWeight, CasingWeightUnits, CasingThickness, InformationSource, DrillingFluid, Salinity, MudResisitivity, Density, FluidLevel, pH, Viscosity, FluidLoss, MeasurementNotes.