坳陷湖盆斜坡带三角洲沉积微相与砂体分布研究——以陕北绥靖地区延长组长6_1油组为例  

Sedimentary Microfacies and Sandstone Distribution Pattern in Delta Deposit of Slope Belts:A Case from Chang-6_1 Oil Reservoir of Yan chang Formation in Suijing Area

作　　者：黄文俊[1] 旷理雄[1,2] 史德锋[1] 高攀峰[3] 

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410083 [2]有色金属成矿预测教育部重点实验室(中南大学),湖南长沙410083 [3]中石油长庆油田公司采油四厂,宁夏银川750005

出　　处：《长江大学学报（自然科学版）》2011年第3期25-27,12,共3页Journal of Yangtze University(Natural Science Edition)

基　　金：国家科技重大专项(2008ZX05002-005)

摘　　要：延长组长61油组是陕北绥靖地区主要目的层,研究陕北绥靖地区长61的沉积微相和砂体分布对于加快该区油气勘探与开发步伐具有重要意义。利用岩心、测井、录井、生产和分析化验资料,分析了长61油组的沉积相和测井相标志,研究区主要为三角洲(水下)分流河道和(水下)分流间湾等沉积微相,发育多条主河道,呈北东-南西向展布;砂体厚度8～20m,呈条带状分布,与沉积微相平面展布基本一致,河道砂体物性相对较好,是下一步勘探的重点区域。Chang-61 oil reservoir of Yanchang Formation is the main target layer in Suijing Area in Shanbei.It is a great significance for speeding up oil exploration and development to study microfacies and sandstone distribution of Chang-61 reservoir of Yanchang Formation.Sedimentary facies and logging facies are studied by core data, well logging, production and laboratory test.The microfacies of Chang-61 reservior include distributary channel, interdistributary embayment, subaqueous distributary channel and subaqueous interdistributary embayment and so on; there are multi-channels in Suijing Area, and the main distribution direction is northeast-southwest.The thickness of banded channel sandstone is 8～20m, and the distribution direction is the same as that of the channels.The physical property of the channel sandstone is better, and the channel is the key area for further exploration.

关 键 词：测井相 沉积微相 三角洲 砂体分布 延长组 鄂尔多斯盆地 

分 类 号：TE121.3[石油与天然气工程—油气勘探]