东营凹陷南坡东段沙三段沉积体系分析及油气成藏规律研究  

Analysis on sedimentary system and research on reservoir-forming regularities of Es_3 in the east part of south slope, Dongying sag.

作　　者：贾光华[1] 李秀华[1] 李小梅[1] 

机构地区：[1]胜利油田有限公司地质科学研究院

出　　处：《油气地质与采收率》2004年第6期16-18,30,共4页Petroleum Geology and Recovery Efficiency

摘　　要：随着勘探程度的不断提高,岩性油藏在新增储量中所占的比例也在逐年增加。与东营凹陷中带相比,南坡东段沙三段岩性油藏勘探和研究程度较低。以高分辨率层序地层学为指导,对该区沙三段层序地层进行划分与对比,建立了与牛庄洼陷相对应的等时地层格架。在此基础上,研究了沙三段沉积体系的发育演变,认为该区存在远岸浊积扇、三角洲坡移浊积扇两类浊积岩,并指出其主要发育期次及分布范围;同时对该区岩性体成藏控制因素进行研究,明确勘探部署方向。As the oil-gas exploration goes continuous increasingly, new increasing reserves are mostly recovered from li-thologic oil reservoirs year by year. In Dongying sag, the exploration and study of the lithologic oil reservoirs in Es3 in the east part of south slope is still at a lower level in comparison with those of central part. Under the guidance of high-resolution sequence stratigraphy, the isochromatic stratigraphic framework correspond to Niuzhuang subsag was established by stratigraphic correlation and classification of Es3 in the studied area. Based on that, the growth and variation of the sedimentary system of Es3 were studied and a conclusion is that there were two types of turbidite, that is, off-shore tur-bidite fan and delta slope-shifting turbidite fan, and their main growth stages and distribution range were pointed out. Also the factors controlling the lithologic oil reservoirs forming were analyzed. As a result, the next exploration direction was determined.

关 键 词：沙三段 沉积体系 东营凹陷 油气成藏规律 期次 岩性油藏 浊积岩 增储 高分辨率层序地层学 等时地层格架 

分 类 号：TE121[石油与天然气工程—油气勘探] P618[天文地球—矿床学]