济阳坳陷地层型油气藏成藏模式

为了深入了解地层油气藏成藏过程和动力机制, 对济阳坳陷地层型油气藏的分类及分布特征进行了系统总结, 从静态和动态2方面入手分析其成藏模式.根据地层型油气藏与不整合面的关系首次提出“不整合体”的概念.分析了不整合体对不同类型地层油气藏起作用的差异性, 建立了不同的成藏模式.探讨了地层型油气藏的成藏机理, 指出浮力是地层型油气藏油气运移的主要驱动力, 构造应力的突然释放是油气幕式运聚的触发机制, 地层型油气藏的成藏过程表现为具幕式特征的相对连续过程. 

Strata Reservoir Forming Mode in Jiyang Depression

In order to further understand the accumulation process and dynamic mechanism of the strata reservoir, the classification and distribution of the strata reservoirs in Jiyang depression are systematically summarized and the reservoir forming mode is analyzed from static and dynamic states. The concept of "unconformity body" is first proposed for the relation between strata reservoir and unconformity contact. Based on analyzing the different impacts of "unconformity body" on different types of strata reservoirs, various reservoir forming modes are constructed. And the mechanism of strata reservoir forming is mainly discussed. It is concluded that the buoyancy and the structure stress are two important dynamic of reservoir forming. The buoyancy is the main dynamic for the oil and gas migration in strata reservoirs and the abruptly releasing of stress is the spring mechanism of the oil and gas episodic migration. The strata reservoir forming process is a relatively continuous process with episode.