| Evolution of Hydrodynamic Field, Oil-Gas Migration and Accumulation in Songliao Basin, China |
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| 作者姓名： | 楼章华 朱蓉 金爱民 孙毛明 蔡希源 迟远林 |
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| 作者单位： | [1]DepartmentofOceanSciencesandEngineering,ZhejiangUniversity,Hangzhou310028,China [2]OilfieldAdministration,SINOPEC,Beijing100029,China [3]OilfieldAdministrationBureauofDaqing,Heilongjiang163712,China |
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| 基金项目： | NationalKeyBasicResearchProgram ( 973 )ofChina (No .2 0 0 1CB2 0 910 4) |
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| 摘 要： | The oil-gas migration and accumulation in the Songliao Basin were analyzed in the view of fluid dynamics by the authors. The key point of fluid dynamics is hydrodynamics. Oil-gas migration and accumulation are related closely with formation and evolution of hydrodynamic field. Based on abundant data, initial formation pressure and other parameters, such as water head were studied. They can be used to understand the present distribution of hydrodynamic field and its hydrochemical features. Generally, the hydrodynamic field in the basin is obviously asymmetrical. In its north and east part, there are the areas of centripetal flow caused by topographic relief when meteoric water permeate downwards. Its south part is an evaporation-concentration area. The central depression is an area of centrifugal flow driven by sediment compaction and its cross-formational flow area. Only at the basin margin and in the local uplifted and denudated area are the meteoric water permeating downwards areas. The centrifugal flow driven by sediment compaction is the main dynamic factor that induces oil-gas migration and accumulation and its formation period corresponding to the main stage of oil-gas migration and accumulation. Moreover, the evolution of hydrodynamic field has the cyclic property, which results in phased oil-gas migration by stages, and further dominates the terraced annular oil and gas distribution, concentric with their corresponding sags.
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| 关 键 词： | 油气 运移 聚集 水动力学 |
| 收稿时间： | 25 July 2003 |
| 修稿时间： | 7 January 2004 |
Evolution of hydrodynamic field,oil-gas migration and accumulation in Songliao Basin,China |
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| Lou Zhanghua,Zhu Rong,Jin Aimin,Sun Maoming,Cai Xiyuan,Chi Yuanlin.Evolution of Hydrodynamic Field, Oil-Gas Migration and Accumulation in Songliao Basin, China[J].Chinese Journal of Oceanology and Limnology,2004,22(2):105-123. |
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| Authors: | Lou Zhanghua Zhu Rong Jin Aimin Sun Maoming Cai Xiyuan Chi Yuanlin |
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| Institution: | (1) Department of Ocean Sciences and Engineering, Zhejiang University, 310028 Hangzhou, China;(2) Oilfield Administration, SINOPEC, 100029 Beijing, China;(3) Oilfield Administration Bureau of Daqing, 163712 Heilongjiang, China |
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| Abstract: | The oil-gas migration and accumulation in the Songliao Basin were analyzed in the view of fluid dynamics by the authors. The key point of fluid dynamics is hydrodynamics. Oil-gas migration and accumulation are related closely with formation and evolution of hydrodynamic field. Based on abundant data, initial formation pressure and other parameters, such as water head were studied. They can be used to understand the present distribution of hydrodynamic field and its hydrochemical features. Generally, the hydrodynamic field in the basin is obviously asymmetrical. In its north and east part, there are the areas of centripetal flow caused by topographic relief when meteoric water permeate downwards. Its south part is an evaporation-concentration area. The central depression is an area of centrifugal flow driven by sediment compaction and its cross-formational flow area. Only at the basin margin and in the local uplifted and denudated area are the meteoric water permeating downwards areas. The centrifugal flow driven by sediment compaction is the main dynamic factor that induces oil-gas migration and accumulation and its formation period corresponding to the main stage of oil-gas migration and accumulation. Moreover, the evolution of hydrodynamic field has the cyclic property, which results in phased oil-gas migration by stages, and further dominates the terraced annular oil and gas distribution, concentric with their corresponding sags. |
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| Keywords: | Songliao Basin hydrodynamics oil-gas migration and accumulation |
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