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A Laboratory Assessment Of The Use Of Borehole Pressure Transients To Measure The Permeability Of Fractured Rock Masses
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Book Synopsis A Laboratory Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses by : C. B. Forster
Download or read book A Laboratory Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses written by C. B. Forster and published by . This book was released on 1981 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laboratory Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses by :
Download or read book Laboratory Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A laboratory program is described that was designed (1) to evaluate the degree of correlation between permeability values determined from steady-state and transient tests on the same samples and (2) to determine the effects of packer compliance on pressure pulse tests performed on low permeability rocks. The basic theory of pressure pulse testing is reviewed and modifications are proposed that may account for packer compliance effects. The laboratory set-up simulates a full-scale field situation using standard field packers in a 76 mm steel pipe. Cylindrical samples 5 cm in diameter and 11 cm long can be subjected to hydrostatic confining pressure up to 34 MPa and pore pressures up to 10 MPa. Using this equipment, transient pressure pulse tests and stead-state flow tests have been performed on (1) two samples of Berea sandstone having conductivities of 6.1 x 10−5 cm/sec and 2.4 x 10−4 cm/sec. and (2) one sample of Stripa granite containing a single fracture parallel to the core axis. Flow through the fracture varied from 1.0 to 0.05 cm3/min when the confining pressure varied from about 3 MPa to 14 MPa for pressure differentials of 0.14 MPa. Transient tests on the porous media samples consistently gave lower permeability values than steady-state tests on the same samples. All samples showed distinct compliance effects that increased with decreasing permeability. The laboratory results demonstrated that transient tests are very sensitive to minor leaks in the test assembly and to temperature variations as slight as +- 0.05°C in the cavity fluid. Thus pressure-pulse borehole equipment must be carefully checked in full-scale test assemblies and must incorporate temperature measuring devices that can detect changes of +- 0.01°C.
Book Synopsis A Laboratory Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses by : C. B. Forster
Download or read book A Laboratory Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses written by C. B. Forster and published by . This book was released on 1981 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Field Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses by :
Download or read book Field Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A field experiment to evaluate the transient pressure pulse technique as a method of determining the in-situ hydraulic conductivity of low permeability fractured rock was made. The experiment attempted to define: the radius of influence of a pressure pulse-test in fractured rock and the correlation between pressure-pulse tests and steady-state flow tests performed in five boreholes drilled in fractured granite. Twenty-five test intervals, 2 to 3 m in length, were isolated in the boreholes, using air-inflated packers. During pressure pulse and steady-state tests, pressures were monitored in both the test and observation cavities. Rock-mass conductivities were calculated from steady-state test results and were found to range from less than 10−11 to 10−7 cm/sec. However, there was no consistent correlation between the steady-state conductivity and the pressure pulse decay characteristics of individual intervals. These conflicting test results can be attributed to the following factors: differences in volumes of rock affected by the test techniques; effects of equipment configuration and compliance; and complexity of the fracture network. Although the steady-state flow tests indicate that hydraulic connections exist between most of the test cavities, no pressure responses were noted in the observation cavities (located at least 0.3 m from the test cavities) during the pulse tests. This does not mean, however, that the pressure-pulse radius of influence is
Book Synopsis A Field Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses by : C.B. Forster
Download or read book A Field Assessment of the Use of Borehole Pressure Transients to Measure the Permeability of Fractured Rock Masses written by C.B. Forster and published by . This book was released on 1981 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 1981 National Waste Terminal Storage Program Information Meeting by :
Download or read book Proceedings of the 1981 National Waste Terminal Storage Program Information Meeting written by and published by . This book was released on 1981 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Sealing of Boreholes and Underground Excavations in Rock by : K. Fuenkajorn
Download or read book Sealing of Boreholes and Underground Excavations in Rock written by K. Fuenkajorn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sealing of boreholes and underground excavations has not received much engineering attention until fairly recently. The growing awareness of and sensitivity to environmental concerns of the technical community as well as of the public at large has resulted in an increasing recognition of the fact that these geological penetrations may have an environmental impact. The issue of possible contamination resulting from migration along boreholes, adits, shafts or tunnels unquestionably has been raised most forcefully with in the context of nuclear waste disposal. Several nuclear waste disposal programs, notably the Civilian and the Defence programs of the US De partment of Energy, the US Nuclear Regulatory Commission and the Canadian and Swedish radioactive waste disposal programs have conducted major research efforts aimed at developing adequate seal designs for penet rations in host rock formations for high-level nuclear waste repositories. While a considerable data base has been gathered over the last two decades or so with regard to the performance of seals, most of the information is presented in research reports and widely scattered papers in journals and proceedings of conferences. Hence, the materials are not readily accessible to potential users such as designers, contractors or regulators who are not familiar with nuclear waste disposal programs.
Book Synopsis An Investigation of Fracture Permeability Around an Underground Opening in Metamorphic Rocks by : Parviz Montazer
Download or read book An Investigation of Fracture Permeability Around an Underground Opening in Metamorphic Rocks written by Parviz Montazer and published by . This book was released on 1983 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1982 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1982 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Science and Technology Publisher : ISBN 13 : Total Pages :1008 pages Book Rating :4.0/5 (18 download)
Book Synopsis Fiscal Year 1982 Department of Energy Authorization by : United States. Congress. House. Committee on Science and Technology
Download or read book Fiscal Year 1982 Department of Energy Authorization written by United States. Congress. House. Committee on Science and Technology and published by . This book was released on 1981 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Department of Energy. Office of Civilian Radioactive Waste Management Publisher : ISBN 13 : Total Pages :560 pages Book Rating :4.3/5 ( download)
Book Synopsis Overview and current plans - information required by the Nuclear waste policy act of 1982 by : United States. Department of Energy. Office of Civilian Radioactive Waste Management
Download or read book Overview and current plans - information required by the Nuclear waste policy act of 1982 written by United States. Department of Energy. Office of Civilian Radioactive Waste Management and published by . This book was released on 1985 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Thiruppudaimarudhur N. Narasimhan Publisher :Geological Society of America ISBN 13 :081372189X Total Pages :458 pages Book Rating :4.8/5 (137 download)
Book Synopsis Recent Trends in Hydrogeology by : Thiruppudaimarudhur N. Narasimhan
Download or read book Recent Trends in Hydrogeology written by Thiruppudaimarudhur N. Narasimhan and published by Geological Society of America. This book was released on 1982-01-01 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Velocities and Attenuation in a Heated Underground Granitic Repository by : Björn Nils Patrick Paulsson
Download or read book Seismic Velocities and Attenuation in a Heated Underground Granitic Repository written by Björn Nils Patrick Paulsson and published by . This book was released on 1983 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evaluation of Hydrogeologic Data of Crystalline Rock Systems by : K. G. Raven
Download or read book An Evaluation of Hydrogeologic Data of Crystalline Rock Systems written by K. G. Raven and published by . This book was released on 1986 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rock Fractures and Fluid Flow by : National Research Council
Download or read book Rock Fractures and Fluid Flow written by National Research Council and published by National Academies Press. This book was released on 1996-08-27 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific understanding of fluid flow in rock fracturesâ€"a process underlying contemporary earth science problems from the search for petroleum to the controversy over nuclear waste storageâ€"has grown significantly in the past 20 years. This volume presents a comprehensive report on the state of the field, with an interdisciplinary viewpoint, case studies of fracture sites, illustrations, conclusions, and research recommendations. The book addresses these questions: How can fractures that are significant hydraulic conductors be identified, located, and characterized? How do flow and transport occur in fracture systems? How can changes in fracture systems be predicted and controlled? Among other topics, the committee provides a geomechanical understanding of fracture formation, reviews methods for detecting subsurface fractures, and looks at the use of hydraulic and tracer tests to investigate fluid flow. The volume examines the state of conceptual and mathematical modeling, and it provides a useful framework for understanding the complexity of fracture changes that occur during fluid pumping and other engineering practices. With a practical and multidisciplinary outlook, this volume will be welcomed by geologists, petroleum geologists, geoengineers, geophysicists, hydrologists, researchers, educators and students in these fields, and public officials involved in geological projects.
