Geothermal gradient drilling, north-central Cascades of Oregon, 1979 [electronic resource]
Geothermal Legacy.
Saved in:
| Online Access: |
Online Access |
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| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Richland, Wash. : Oak Ridge, Tenn. :
United States. Dept. of Energy. Richland Operations Office. ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1980.
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| Subjects: |
| Summary: | Geothermal Legacy. |
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| Abstract: | 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. |
| Item Description: | Published through the Information Bridge: DOE Scientific and Technical Information. 01/01/1980. "doe/et/27243-t1" "DE86010573" Youngquist, W. Oregon State Dept. of Geology and Mineral Industries, Portland (USA) |
| Physical Description: | Pages: 51 : digital, PDF file. |