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Cascade Geothermal Drilling
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Download or read book Cascade Geothermal Drilling written by and published by . This book was released on 1988 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core hole GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commerical exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the ''rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Core hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite with basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Difficult drilling conditions were encountered in both core holes at depths near the regional water table. Additionally, both core holes penetrate three distinct thermal regimes (isothermal (the rain curtain), transition, and conductive) each having its own unique features based on geophysical logs, fluid geochemistry, age dates, and rock alteration. Smectite alteration, which seems to control the results of surface geoelectrical studies, begins in the isothermal regime close to and perhaps associated with the regional water table. 28 refs., 15 figs., 2 tabs.
Book Synopsis Cascade Geothermal Drilling/corehole N-3 by :
Download or read book Cascade Geothermal Drilling/corehole N-3 written by and published by . This book was released on 1988 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core holes GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commercial exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Core hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite with basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Difficult drilling conditions were encountered in both core holes at depths near the regional water table. Additionally, both core holes penetrate three distinct thermal regimes (isothermal (the rain curtain), transition, and conductive) each having its own unique features based on geophysical logs, fluid geochemistry, age dates, and rock alteration. Smectite alteration, which seems to control the results of surface geoelectrical studies, begins in the isothermal regime close to and perhaps associated with the regional water table.
Book Synopsis Cascade Geothermal Drilling/corehole N-1 by :
Download or read book Cascade Geothermal Drilling/corehole N-1 written by and published by . This book was released on 1988 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two core holes have been completed on the flanks of Newberry Volcano, Oregon. Core hole GEO N-1 has a heat flow of 180 mWm-2 reflecting subsurface temperature sufficient for commerical exploitation of geothermally generated electricity. GEO N-3, which has a heat flow of 86 mWm-2, is less encouraging. Considerable emphasis has been placed on the ''rain curtain'' effect with the hope that a detailed discussion of this phenomenon at two distinct localities will lead to a better understanding of the physical processes in operation. Core hole GEO N-1 was cored to a depth of 1387 m at a site located 9.3 km south of the center of the volcano. Core hole GEO N-3 was cored to a depth of 1220 m at a site located 12.6 km north of the center of the volcano. Both core holes penetrated interbedded pyroclastic lava flows and lithic tuffs ranging in composition from basalt to rhyolite with basaltic andesite being the most common rock type. Potassium-argon age dates range up to 2 Ma. Difficult drilling conditions were encountered in both core holes at depths near the regional water table. Additionally, both core holes penetrate three distinct thermal regimes (isothermal (the rain curtain), transition, and conductive) each having its own unique features based on geophysical logs, fluid geochemistry, age dates, and rock alteration. Smectite alteration, which seems to control the results of surface geoelectrical studies, begins in the isothermal regime close to and perhaps associated with the regional water table. 28 refs., 15 figs., 2 tabs.
Book Synopsis Festschrift des Römisch- Germanischen Zentralmuseums in Mainz zur Feier seines hundertjährigen sestehens 1952. 3 Bd by :
Download or read book Festschrift des Römisch- Germanischen Zentralmuseums in Mainz zur Feier seines hundertjährigen sestehens 1952. 3 Bd written by and published by . This book was released on 1952 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cascade School District Low Temperature Geothermal Exploration Well Drilling Project by : Susan Petty
Download or read book Cascade School District Low Temperature Geothermal Exploration Well Drilling Project written by Susan Petty and published by . This book was released on 2008 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Gradient Drilling, North-central Cascades of Oregon, 1979 by :
Download or read book Geothermal Gradient Drilling, North-central Cascades of Oregon, 1979 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A geothermal gradient drilling program was conducted on the western flank of the north-central Cascade Mountains in Oregon. Six wells were drilled during this program, although in effect seven were drilled, as two wells were drilled at site 3, the second well, however, actually going to a lesser depth than the first. Three of the wells (3, 4, and 5) were drilled in areas which topographically are subject to strong throughflows of ground water. None of these wells reached the regional water table, and all showed essentially isothermal geothermal gradients. The single well which was started essentially at the water table (well 6) shows a linear temperature rise with depth essentially from the top of the well bore. Well No. 2 shows an isothermal gradient down to the level of the regional water table and then shows a linear gradient of about 70°C/km from the regional water table to total depth.
Book Synopsis Geothermal Gradient Drilling, North-Central Cascades of Oregon, 1979 by : Walter Lewellyn Youngquist
Download or read book Geothermal Gradient Drilling, North-Central Cascades of Oregon, 1979 written by Walter Lewellyn Youngquist and published by . This book was released on 1980 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Gradient Drilling, North-Central Cascades of Oregon, 1979 by : Walter Lewellyn Youngquist
Download or read book Geothermal Gradient Drilling, North-Central Cascades of Oregon, 1979 written by Walter Lewellyn Youngquist and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The 1985 Geothermal Gradient Drilling Project for the State of Washington by :
Download or read book The 1985 Geothermal Gradient Drilling Project for the State of Washington written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes seven geothermal gradient test holes in the southern Washington Cascade Mountains. The objectives of the drilling program were to: (1) more accurately define the general extent of potential geothermal resources in the southern Washington Cascades, and (2) evaluate specific targets that are geologically and structurally favorable for the occurrence of geothermal resources. (ACR).
Book Synopsis Geothermal Resources by : Geothermal Resources Council. Annual Meeting
Download or read book Geothermal Resources written by Geothermal Resources Council. Annual Meeting and published by . This book was released on 1983 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal Energy Program Summary: Overview by :
Download or read book Geothermal Energy Program Summary: Overview written by and published by . This book was released on 1989 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Results of the 1988 Geothermal Gradient Test Drilling Project for the State of Washington by :
Download or read book Results of the 1988 Geothermal Gradient Test Drilling Project for the State of Washington written by and published by . This book was released on 1989 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: During late summer and early fall of 1988, the Washington Department of Natural Resources, Division of Geology and Earth Resources (DGER) completed drilling eight shallow geothermal gradient test wells in the southern Washington Cascade Range. This report describes the preliminary results of the 1988 drilling and gradient measuring, and summarizes our current perspectives on distribution and magnitude of the geothermal resource potential in the southern Washington Cascades. 18 refs., 11 figs., 11 tabs.
Book Synopsis Geothermal Energy in the Western United States and Hawaii by :
Download or read book Geothermal Energy in the Western United States and Hawaii written by and published by Department of Energy. This book was released on 1991 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solicitation for Cooperative Agreement Proposals (SCAP), Number DE-SC07-85ID12580, for Cascades Deep Thermal Gradient Drilling by : United States. Department of Energy. Idaho Operations Office
Download or read book Solicitation for Cooperative Agreement Proposals (SCAP), Number DE-SC07-85ID12580, for Cascades Deep Thermal Gradient Drilling written by United States. Department of Energy. Idaho Operations Office and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Energy (DOE), Division of Geothermal and Hydropower Technologies (DGHT), is mandated to support research and development to identify, evaluate, extract, and utilize geothermal resources as an alternative energy source. As a part of this overall effort, DGHT is initiating through this solicitation a new program designed to support industry efforts in the Cascades volcanic region of California, Oregon, and Washington. The Cascade volcanic region has long been suspected to contain considerable geothermal potential, as evidenced by recent volcanism and other thermal expressions. There are few known surface manifestations of geothermal energy in spite of the obvious occurrence of heat sources. One possible explanation is that the downward percolation of the extensive regional cold ground-water system forms a so-called "rain curtain" that suppresses surface evidence of underlying hydrothermal systems. This hypothesis can be tested only by drilling below the rain curtain. Resource characterization has been conducted by the U.S. Geological Survey (USGS) and by the states involved--Washington, Oregon, and California and now more recently by industry. However, there have been few wells drilled in the Cascades region to a sufficient depth to properly evaluate the temperature and hydrological conditions beneath the cold water zone. There is general agreement within the geothermal scientific community that there is a great need for characterization identification of the deeper hydrothermal regime in order to further define the geothermal potential of the Cascades volcanic environment. DOE anticipates $1,000,000 in the FY-1985 budget for this solicitation which will allow DOE to cost-share on the drilling of up to eight deep thermal gradient holes. It is DOE's aim to select sites which will provide the greatest amount of information for resource characterization and which will meet the research objectives of DOE. Project Description: DOE's objectives are 1) to gather data to characterize the deep hydrothermal resource of the Cascades volcanic region and 2) to transfer this data to the public in order to stimulate further development of hydrothermal resources. The Participant will drill a deep thermal gradient hole at a location within the Cascades region defined by Figure 1 (page 3). The hole to be drilled will be a minimum of 3000 feet in depth. The Participant will perform data collection including well logs, rock samples, and, if appropriate, fluid samples. The Participant will be responsible for any required permits, leases, environmental evaluations, or approvals required by governmental agencies for performance of the project. The Participant will complete and maintain the hole and allow DOE access to the hole to collect data. During the DOE access period, the Participant may perform additional data collection and tests at its own expense on a non-interference basis. The Participant will be responsible for plugging and abandoning the hole. The Participant will be required to submit to DOE several project plans and status reports during performance. The Participant will provide the data collected under the project to DOE. Data and information gathered under this project will be made public by DOE. DOE will cost-share up to 50 percent of the incurred allowable cost of drilling and associated data collection. DOE's contribution will also be subject to a maximum amount which will be negotiated prior to award. In no event will DOE exceed its "up to 50 percent" cost-share.
Book Synopsis Results of the 1988 Geothermal Gradient Test Drilling Project for the State of Washington by : Douglas B. Barnett
Download or read book Results of the 1988 Geothermal Gradient Test Drilling Project for the State of Washington written by Douglas B. Barnett and published by . This book was released on 1989 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: During late summer and early fall of 1988, the Washington Department of Natural Resources, Division of Geology and Earth Resources (DGER) completed drilling eight shallow geothermal gradient test wells in the southern Washington Cascade Range. This report describes the preliminary results of the 1988 drilling and gradient measuring, and summarizes our current perspectives on distribution and magnitude of the geothermal resource potential in the southern Washington Cascades.
Book Synopsis Hydrothermal Mineralogy of Core from Geothermal Drill Holes at Newberry Volcano, Oregon by : Keith E. Bargar
Download or read book Hydrothermal Mineralogy of Core from Geothermal Drill Holes at Newberry Volcano, Oregon written by Keith E. Bargar and published by Geological Survey (USGS). This book was released on 1999 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Geothermal resources of the cascade range by : US Geological Survey
Download or read book Geothermal resources of the cascade range written by US Geological Survey and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
