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Interaction of fluid dynamic factors in the migration and accumulation of natural gas |
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| Authors: | |
| Institution: | (1) Research Institute of Petroleum Exploration and Development, 100083 Beijing, China;(2) Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(3) Northwest University, 710069 Xi’an, China;(4) Chinese University of Petroleum, 257062 Dongying, China;(5) Institute of Geology, Chinese Academy of Sciences, 100029 Beijing, China |
| Abstract: | The migration of fluid petroleum gas, described as fluid potential, depends only on gravity, fluid pressure controlled by depression and capillary force during tectonically stable period; but on tectonic stress during the tectonically active period with severe compression. This method is applied in the Junggar Basin, showing that the migration of Jurassic gas during Cretaceous and Eocene and the migration of Permian gas from Jurassic till the present are determined by capillary force and fluid pressure (including overpressure) which is controlled by depression; the migration of Jurassic gas from Eocene till the present and the migration of Permian gas during Triassic are controlled by tectonic stress. |
| Keywords: | petroleum migration fluid potential tectonic stress fluid pressure Junggar Basin |
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