| Geological analysis and physical modeling of structural pumping in high effective formation of Kela 2 gas field |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | In a 3-D closed geological body, in case “structural expanding” inside is induced by stress, it can produce the pressure difference between the expanding cell and surrounding rock, then generate a pumping force directed toward the cell and accelerate the directional flow of fluid in the strata. The structural style and conditions of gas reservoir-formation in the Kuqa depression are favorable to the structural pumping. According to similarity principle, a physical modeling of structure formation and gas filling process of the Kela 2 gas field has justified the occurrence of structural pumping and its important role in gas-reservoir formation with high efficiency under the compressive and well-sealed circumstance. Therefore, authors propose that structural pumping is an important mechanism of gas reservoir-formation with high efficiency in the Kuqa depression.
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| 收稿时间： | 14 March 2006 |
| 修稿时间： | 17 May 2006 |
Geological analysis and physical modeling of structural pumping in high effective formation of Kela 2 gas field |
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| Authors: | ZHAO Wenzhi WANG Hongjun SHAN Jiazeng WANG Zecheng XU Dafeng |
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| Institution: | 1. Research Institute of Petroleum Exploration and Development,Petrochina,Beijing 100083,China
2. Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China |
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| Abstract: | In a 3-D closed geological body, in case “structural expanding” inside is induced by stress, it can produce the pressure difference
between the expanding cell and surrounding rock, then generate a pumping force directed toward the cell and accelerate the
directional flow of fluid in the strata. The structural style and conditions of gas reservoir-formation in the Kuqa depression
are favorable to the structural pumping. According to similarity principle, a physical modeling of structure formation and
gas filling process of the Kela 2 gas field has justified the occurrence of structural pumping and its important role in gas-reservoir
formation with high efficiency under the compressive and well-sealed circumstance. Therefore, authors propose that structural
pumping is an important mechanism of gas reservoir-formation with high efficiency in the Kuqa depression. |
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| Keywords: | Kela 2 gas field structural pumping gas-reservoir formation mechanism high efficiency physical modeling |
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