鄂尔多斯盆地马岭地区长8油层组物源及沉积展布特征  

Provenance and sedimentary facies evolution of Chang 8 oil reservoir set in Maling area, Ordos Basin

作　　者：雷启鸿[1,2] 高琼瑶[3,4] 成良丙[1,2] 李继红[3,4] 杨永兴[1,2] 高军锋[3,4] 

机构地区：[1]中国石油长庆油田分公司勘探开发研究院,西安710021 [2]低渗透油气田勘探开发国家工程实验室,西安710018 [3]西北大学地质学系,西安710069 [4]西北大学大陆动力学国家重点实验室,西安710069

出　　处：《岩性油气藏》2015年第2期70-76,91,共8页Lithologic Reservoirs

基　　金：中国石油天然气集团公司重大攻关项目"鄂尔多斯盆地致密油勘探开发关键技术研究"(编号:2011E-13)资助

摘　　要：通过对鄂尔多斯盆地马岭地区长8油层组15口钻井岩心的岩石学特征、沉积构造、生物化石及粒度特征等的综合研究,结合轻、重矿物组合平面展布特征、数据结构变差函数分析及砂岩百分含量平面分布规律等,对该区物源及古水流方向进行了分析。结果表明:研究区物源与古水流方向为北东向和南西向,发育浅水三角洲前缘沉积,各小层沉积微相的展布随双向水流强弱的不同而变化。Based on the petrology characteristics, sedimentary structure, biological fossils and grain-size distribution of cores from 15 drilling wells of Chang 8 oil reservoir set in Maling area, combined with heavy and light mineral combination characteristics, variational function of data structure and plane distribution of sand content, this paper analyzed the direction of provenanace and palaeocurrent. The results show that the provenanace and palaeocurrent came from the southwest and northeast of the study area, Chang 8 oil reservoir set developed shallow water front delta facies, and the sedimentary microfacies distribution of each sub-layer changed according to the water flow intensity from the two different directions.

关 键 词：物源分析 沉积相展布特征 长8油层组 马岭地区 鄂尔多斯盆地 

分 类 号：TE121.3[石油与天然气工程—油气勘探]