论文部分内容阅读
为了在松南地区扩大油气勘查成果，我们对勘探重点的H凹陷A剖面进行了二维盆地模拟。得到了H凹陷的地史、热史、生烃史、排烃运移史资料。在地史研究中，从已知盆地出发，采用了回剥技术，由今溯古重建了凹陷的沉积史和构造史。在此基础上进行了热史分析，得到了H凹陷在早期发生断裂活动，并伴有高热流值，形成了有利于有机物向石油烃转化的环境。生烃史和排烃运移史的研究主要对沙河子组地层进行。研究结果表明沙河子组是凹陷中的主要生油气层，营城组次之。油气向超水头值小的方向运移，凹陷中心环带是油气运移的指向地区。这些地区有良好岩相体系和封闭条件的部位是油气聚集的有利场所。
In order to expand the oil and gas exploration results in the Songnan area, we conducted a two-dimensional basin simulation of the H-Sag A profile of exploration focus. Get H depression of the history, thermal history, hydrocarbon generation history, hydrocarbon migration history data. In the study of geography history, starting from the known basins, the back-stripping technique was adopted and the sedimentary history and tectonic history of the sag were reconstructed from nowadays. On this basis, the thermal history analysis was carried out. It was found that the H depression occurred in the early stage of fault activity accompanied by high heat flux and formed an environment conducive to the conversion of organic matter to petroleum hydrocarbons. Hydrocarbon generation history and the history of hydrocarbon migration and drainage research mainly on the Shahezi Formation. The results show that the Shahezi Formation is the main oil and gas reservoir in the depression, followed by Yingcheng Formation. Hydrocarbon migration to the direction of a small head, the central sag of sag is the area where oil and gas migrate. The favorable lithofacies and sealing conditions in these areas are favorable sites for hydrocarbon accumulation.