Transport equation and evaluating formation parameters based on gamma-gamma log data |
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| Institution: | 1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;1. College of Science, China Jiliang University, 258 Xueyuan Street, Hangzhou 310018, PR China;2. Department of Mining and Materials Engineering, McGill University, Montreal H3A 2A7, Canada;3. Department of Chemical and Biochemical Engineering, Western University, London N6A 5B9, Canada;4. College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, PR China;1. A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia;2. Novosibirsk State University, ul. Pirogova 2, Novosibirsk, 630090, Russia;3. V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, pr. Akademika Koptyuga 3, Novosibirsk, 630090, Russia |
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| Abstract: | Computer inversion of measurement data based on the equation of particle transport is a topical component of the modern nuclear-geophysical technologies. In this work we have elaborated an approach and iterative methods for this inversion according to the gamma-gamma method data. In the framework of the “successive approximations according to characteristic interactions” approach, characteristic interactions have been established and iterative methods for the solution of two problems have been developed, namely, the problem of evaluation of the formation density and the problem of evaluation of two parameters—the formation density and the mud cake thickness. The numerical experiments confirm the theoretical concepts on the properties of iterative processes and convergence of methods. |
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