This spreadsheet is a compilation of borehole temperature measurements obtained from wells and compiled by the Tennessee Division of Geology, published as a Web feature service for the National Geothermal Data System. The document contains 6 worksheets, including information about the template, instructions for using 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 1200 wells are included. Fields in the data table include ObservationURI, WellName , APINo, HeaderURI, OtherID, OtherName, BoreholeName, Label, Operator, LeaseName, 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, LengthUnits, WellboreShape, TrueVerticalDepth, ElevationGL, BitDiameterCollar, BitDiameterTD, DiameterUnits, Notes, MeasuredTemperature, CorrectedTemperature, TemperatureUnits, TimeSinceCirculation , CirculationDuration, MeasurementProcedure, CorrectionType, DepthOfMeasurement, MeasurementDateTime, MeasurementFormation, MeasurementSource, CasingLogger, CasingBottomDepthDriller, CasingPipeDiameter, CasingWeight, CasingWeightUnits, CasingThickness, DrillingFluid, Salinity, MudResistivity, Density, FluidLevel, pH, Viscosity, FluidLoss.

The purposes of this paper are to review the stratigraphic and structural models which have been developed for The Geysers from surface mapping, propose a model which is the most compatible with drilling results and, based on the preferred model, show how stratigraphy and structure control the occurrence of steam.

Drilling or recompletion of production wens with two or more producing wen bores is a technique that has been used successfully by several operators in the southwestern part of the Geysers field to increase well productivity and decrease the unit cost of steam production. 111e northwestern part of the field poses special difficulties for drilIing multiple-legged or "forked" wens, because of greater reservoir depth, higher reservoir temperatures, the need for narrower well completions, and less stable rock conditions. Three wells within the Adjacent project area of the northwest Geysers were recompleted as 2- and 3-legged producers during 1992-1993, using both existing and new methods for coping with the conditions in this part of the field. Total drilled depths of the producing legs were as much as 11,345 feet (3,458 m), and kickoff points were as deep as 7,895 feet (2,405 m) from 9-5/8-inch production casings. Reservoir temperatures in directionally drilled intervals reached in excess of 600°F (315°C).

This addendum report presents the results of the California Division of Mines and Geology (CDMG) drilling program at Calistoga, California, which was the final geothermal-resource assessment investigation performed under terms of the second year contract (1979-80) between the u.s. Department of Energy (DOE) and the CDMG under the State Coupled Program. This report is intended to supplement information presented in CDMG's technical report for the project year, "Resource Assessment of Low-and Moderate-Temperature Geothermal Waters in Calistoga, Napa County, California."

This drilling project in northwest Arizona consisted of 18 holes drilled to depths ranging from 1,341 to 5,491 feet. The holes were sited to determine the lateral extent of the Uranium-bearing strata. / Additional data to improve the resource estimates for the Date Creek and the Big Sandy basin.

The undersigned , being the executive secretary of the Oil and Gas Conservation Commission of the state of Arizona, hereby certifies that the following is a true and correct copy of the rules and regulations of the Oil and Gas Conservation Commission of the State of Arizona relating to the conservation of geothermal resources, which were duly adopted by this commission by the Title 27, Chapter 4; Article 4. Said rules and regulation have been filed with the office of the secretary of State on the 23rd day of June, 1972.