济阳坳陷构造变动破坏烃量反演模拟  

Inversion modeling of the hydrocarbon amount destroyed by tectonic event in the Jiyang Depression

作　　者：庞雄奇[1] 左胜杰[1] 金之钧[1] 解国军[1] 姜振学[1] 

机构地区：[1]石油大学教育部石油天然气成藏机理重点实验室

出　　处：《石油勘探与开发》2003年第3期56-60,共5页Petroleum Exploration and Development

基　　金：国家重大基础研究 (973 )项目 (G19990 43 3 10 );国家"十五"重大科技攻关项目 (2 0 0 1BA60 5A0 9)

摘　　要：合理确定构造变动破坏烃量 ,对于客观评价油气资源、全面认识油气成藏过程等非常关键 ,尤其在我国东部断陷盆地和西部遭受过多期构造变动的叠合盆地 ,对勘探部署更具指导意义。以济阳坳陷 19个高勘探程度油气成藏体系为例 ,从门限控烃的角度反演模拟其构造破坏烃量 ,模拟结果表明 ,济阳坳陷主要成藏体系的构造破坏烃量多为 2 0× 10 8～ 40× 10 8t ,不同成藏体系的构造破坏烃量差别很大。用逐步回归方法建立了构造破坏烃量与地质要素之间的定量关系 ,确定构造变动破坏烃量的主控因素是排烃强度、砂地比、储集层有效厚度、构造变动次数、目的层倾角、断层密度等。图 6表 2参The rational determination of the destroyed hydrocarbon amount caused by tectonic event is the key for geologist to evaluate petroleum resources, recognize the process of hydrocarbon accumulation and guide the exploration, especially for the rift basins and the superimposed basins located in eastern and western China, respectively, which have experienced multi stages of tectonic events. Based on the theory of thresholds controlling hydrocarbons, the destroyed hydrocarbon amounts due to tectonic events of 19 pool forming systems with higher exploration degree in Jiyang Depression have been inversly modeled. The results indicate that the above amounts are usually in a range of 2 4 billion tons, and different poor forming systems have varying amounts. By establishing the quantitative relationship between the destroyed hydrocarbon amount due to tectonic event and the geological influencing factors, some parameters are determined to be the main controlling factors such as hydrocarbon expulsion intensity, the ratio of sand to formation thickness, the net reservoir thickness, the number of tectonic event, the dip angle of target bed and the fault density.

关 键 词：济阳坳陷 成藏体系 构造破坏烃量 资源评价 反演模拟 

分 类 号：TE122.1[石油与天然气工程—油气勘探]