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Genetic models of structural traps related to normal faults in the Putaohua Oilfield,Songliao Basin

查看全文 作　　者：Sun [1]Simin;Wu [1]Xinsong;Liu [2]Hongtao;Wang [2]Changsheng 高影响力作者 机构地区：[1]School of Resources and Information Technology, China University of Petroleum, Beijing 102249, China;[2]Oil Recovery Plant No.7, Daqing Oilfield Company, PetroChina, Daqing, Heilongjiang 163517, China高影响力机构 出　　处：《Petroleum Science》索引2008年第5卷第4期,共6页高影响力期刊 基　　金：the National Natural Science Foundation of China (Project No.40372072) 摘　　要：The Putaohua Oilfi eld is a fault-prolifi c area and the faults have close relation with structural traps. The genetic models of the structural traps in the Putaohua Oilfi eld can be divided into two types: individual fault model and multi-fault interaction model. This is based on the description of displacement distribution of typical individual normal faults, the geometry of the footwall and hanging wall, and the analysis of the interaction between faults and the corresponding change in geometry when the faults grow. The individual fault model is that the displacement reaches a maximum at or near the center of fault and decreases toward the fault tips, so a half-graben is formed on the hanging wall of the fault and a half-anticline is formed on the footwall because of the isostatic process. The multi-fault interaction model is that during the growth of faults, they overlap and interact with each other, and accommodation zones are formed in the overlapping segments. The accommodation zones are favorable targets for hydrocarbon exploration, and the trap characteristics are dependent on the extent of overlap and occurrence of faults. The multi-fault interaction model can be subdivided into three types: synthetic accommodation zone, convergent accommodation zone and divergent accommodation zone. Hydrocarbon migration and accumulation models of each type have been developed. The hydrocarbon migration and accumulation models of the traps with different genetic models have their own characteristics in the different stages of fault growth. 关 键 词：松辽盆地 油田 勘探技术 结构陷阱
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