Fractured rock aquifer tests in the Western Siberian Basin, Ozyorsk, Russia

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A series of multi-zone pumping tests was conducted in a contaminated fractured rock aquifer in the Western Siberian Basin, Ozyorsk, Russia. The tests were conducted adjacent to the Mishelyak River floodplain in fractured Paleozoic porphyrites, tufts, tuff breccia, and lava typical of the Ural mountain complex. Geophysical logs, borehole photography, core samples, and results from previous borehole contamination studies were used to identify the zones to be tested. A network of three uncased wells was tested using a system of inflatable packers, pressure transducers and data loggers. Seven zones were isolated and monitored in two of the uncased wells. A ... continued below

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10 p.

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Nichols, R.L.; Looney, B.B. & Eddy-Dilek, C.A. October 1, 1997.

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Description

A series of multi-zone pumping tests was conducted in a contaminated fractured rock aquifer in the Western Siberian Basin, Ozyorsk, Russia. The tests were conducted adjacent to the Mishelyak River floodplain in fractured Paleozoic porphyrites, tufts, tuff breccia, and lava typical of the Ural mountain complex. Geophysical logs, borehole photography, core samples, and results from previous borehole contamination studies were used to identify the zones to be tested. A network of three uncased wells was tested using a system of inflatable packers, pressure transducers and data loggers. Seven zones were isolated and monitored in two of the uncased wells. A straddle packer assembly was used to isolate individual zones within the pumping well. Eight constant rate pumping tests were conducted. Results of the testing indicate that shallow groundwater migrates primarily in two intervals that are separated by an interval with low lateral conductivity. The water bearing intervals have moderate to high specific capacities (1.3 and 30 L/min/m). Several processes are responsible for fracturing present in the lower interval. The network of compound fractures produced a complex array of fracture intersections yielding a fractured media with hydraulic behavior similar to porous media. Models used for the analysis of pumping tests in porous media provide a good estimation of the hydraulic response of the lower interval to pumping. Future work will include more complex analysis of the data to determine hydraulic conductivity ellipses.

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10 p.

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INIS; OSTI as DE97054318

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  • 1997 American Institute of Hydrology annual meeting, Tampa, FL (United States), 16-19 Nov 1997

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  • Other: DE97054318
  • Report No.: WSRC-MS--97-0576
  • Report No.: CONF-971198--
  • Grant Number: AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 570132
  • Archival Resource Key: ark:/67531/metadc698699

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • October 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • June 14, 2016, 8:37 p.m.

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Nichols, R.L.; Looney, B.B. & Eddy-Dilek, C.A. Fractured rock aquifer tests in the Western Siberian Basin, Ozyorsk, Russia, article, October 1, 1997; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc698699/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.