摘要
通过岩石学、岩石相及其组合特征分析,确定了吴堡地区南梁油田延长组长4+5油层组主要发育三角洲前缘亚相沉积,进一步可细分为水下分流河道、水下分流河道侧翼以及浅湖泥3种微相,并建立了不同微相的岩电响应关系。通过剖面相和平面相研究表明,长4+5油层组发育北东和南西2个方向的物源,于区内中部汇合,其中北东向物源规模较大。
Through the petrologic,lithofacies and its combination analysis,it was determined that delta front subfacies was mainly developed in Chang 4 + 5 reservoir of Wubu Area,it could be further divided into 3 subfacies,such as underwater distributary channel,underwater distributary channel flank and shallow lacustrine mud,a rock-electrical response relationship was established for different microfacies. By studying the section and plain sedimentary facies,the result shows that provenances are developed in the northeast and southwest of Chang 4 + 5 reservoir,they meet in the middle of the area,in which the source from the northeast is larger in size.
出处
《石油天然气学报》
CAS
CSCD
2014年第5期15-19,3,共5页
Journal of Oil and Gas Technology
关键词
岩石相
沉积微相
沉积相模式
长4+5油层组
吴堡地区
lithofacies
sedimentary microfacies
sedimentary facies mode
Chang 4 + 5 reservoir
Wubu Area
