摘要
陆相地层中的等时地层界面(不整合)、旋回沉积作用以及可以预测的空间地层的分布型式是陆相层序地层学的研究基础,同时,陆相地层中多物源、多构造运动、多沉积中心、气候因素对沉积物供应类型的影响大等客观条件都决定了陆相层序的发育特征。目前,对层序格架中生油岩、储集层和油气分布规律的研究,对地震强反射的重新认识以及陆相层序发育模式等方面已成为陆相层序地层学研究的热点。陆相层序要强调多学科综合研究,重视同位素测年等基础性工作,要针对重点剖面、重点井、重点层位进行深入细致的层序地层学解剖工作,总结油气的赋存规律,提高钻探的成功率。
The unconformity, cycles and the expected stratadistribution pattern are the basis of study the non-marine Sequence Stratigraphy, and the objective con-ditions, such as multi-source, multi-tectonic activity,multi-deposition center and the affect of climate de-cide the nature of non-marine sequence. At the present,the hot spots of study on non-marine sequencestratigraphy include the study of distribution of sourcerock, reservoif, oil and gas in sequence framework,recognition of the strong seismic refiection and con-struction of the sequence model. As a result, weshould take into account of synthetic research, funda-mental work in the process of non-marine SequenceStratigraphy study to dissect typical seismic section,typical wells and important layers, and to summarizeregularity of oil & gas distribution aiming at improv-ing the rate of success of drilling.
关键词
层序地层学
油气勘探
低水位体系域
陆相
特征
sequence stratigraphy
sequence framework
petroleum exploration
lowstand system tract
