A modified pulse‐decay approach to simultaneously measure permeability and porosity of tight rocks
Energy Science & Engineering, vol. 9, pp. 2354–2363
Abstract
Abstract Permeability and porosity are the two most important parameters of rocks for the evaluation and exploitation of oil/gas reservoirs. In this study, a modified pulse‐decay method has been developed to measure both permeability and porosity simultaneously. In the present method, the gas pressure in one chamber is changed (increased or decreased) instantaneously and then maintained constant, while the pressure response changing with time in the other one is monitored. A mathematical model of this procedure has been formulated, and a general analytical solution, including the early‐time and late‐time evolutions, has been obtained. The late‐time solution is presented for postprocessing of experimental data, which leads to the simultaneous measurement of permeability and porosity values of tight rocks. Our measurements agree well with those from the classical pulse‐decay and gas expansion methods. Compared with measuring the permeability and porosity separately, the proposed method can reduce the total test time and ensure the permeability and porosity are measured under the same effective stress condition.
Authors 6
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Affiliation as printed
Department of Engineering Mechanics Tsinghua University Beijing China
Department of Engineering Mechanics, Tsinghua University, Beijing, China
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Steffen Nolte Aachen Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group (EMR)
Affiliation as printed
Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group (EMR) RWTH Aachen University Aachen Germany
Institute of Geology and Geochemistry of Petroleum and Coal, Energy and Mineral Resources Group (EMR), RWTH Aachen University, Aachen, Germany
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Affiliation as printed
Department of Engineering Mechanics Tsinghua University Beijing China
Department of Engineering Mechanics, Tsinghua University, Beijing, China
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Alexandra Amann‐Hildenbrand Aachen Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group (EMR)
Affiliation as printed
Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group (EMR) RWTH Aachen University Aachen Germany
Institute of Geology and Geochemistry of Petroleum and Coal, Energy and Mineral Resources Group (EMR), RWTH Aachen University, Aachen, Germany
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Bernhard M. Krooß Aachen Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group (EMR)
Affiliation as printed
Institute of Geology and Geochemistry of Petroleum and Coal Energy and Mineral Resources Group (EMR) RWTH Aachen University Aachen Germany
Institute of Geology and Geochemistry of Petroleum and Coal, Energy and Mineral Resources Group (EMR), RWTH Aachen University, Aachen, Germany
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Moran Wang corresponding
Affiliation as printed
Department of Engineering Mechanics Tsinghua University Beijing China
Department of Engineering Mechanics, Tsinghua University, Beijing, China
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