阿根廷库约和内乌肯盆地油气特征与勘探潜力

位于阿根廷中西部地区的库约盆地和内乌肯盆地是南美次安第斯盆地群南段的两个较独特的弧后前陆盆地。俯冲角度的变化导致二者岩石圈及冲断带构造的不同。两个盆地经历了相似的4 个盆地演化阶段：基底、裂谷期、后裂谷沉降期、前陆期。库约盆地发育一个已证实的含油气系统，以上三叠统富有机质湖相泥岩为主力烃源岩，主要以三叠系河流相砂砾岩为储层，盖层为三叠系层内盖层和白垩系区域盖层，圈闭形成和油气生成高峰在新近纪。内乌肯盆地发育1 个已证实的和3 个推测的含油气系统，除裂谷期上三叠统源岩外，其余下—中侏罗统、凡兰吟阶—巴列姆阶、提塘阶—凡兰吟阶的源岩均发育在裂谷后沉降单元内，储层范围从二叠系至新生界，最富产层为上侏罗统—下白垩统砂岩和灰岩储层，油气系统关键时刻为晚白垩世—新近纪。海陆相沉积环境的不同造成烃源岩质量的巨大差异，直接体现在其成藏组合中赋存悬殊的油气资源量；各阶段中相对独立的构造–沉积环境造成了油气地质特征与勘探潜力的差异。

Sci-Tech Research and Development Evaluation and the Corresponding Suggestions on China's Energy Industry

BISQ model is composed of fluid-solid action mechanics between Biot flow and jet flow.Based on BISQ model，wavefield features，propagation rule，strong attenuation and high frequency dispersion of seismic wave caused by jet flow in dual phase media are analyzed.Based on the particular seismic wavefield properties of dual phase media，when seismic wave penetrates the reservoir，the energy of top，bottom and lateral orientation of the reservoir will be different.So，the fast P wave′s Q-1 & αcan be calculated to detect hydrocarbon.This method is applied to detect hydrocarbons in clastic rock reservoir，oil/gas special distribution in the study area were detected accurately and effectively.Moreover，the detection results are verified by the actual drilling results.This method has provided a new technical support for oil/gas detection and has wide application prospects.