鄂尔多斯盆地旦八地区长4+5油层组沉积相特征研究  

Study on the Features of Sedimentary Facies of Chang4+5 Pay Set of Triassic Yanchang Formation in Zhidan-Danba Area,Ordos Basin

作　　者：钟兴平[1] 苗建宇[1] 徐子炎[1] 

机构地区：[1]西北大学地质学系西北大学大陆动力学国家重点实验室,陕西西安710069

出　　处：《科技情报开发与经济》2010年第8期131-133,共3页Sci-Tech Information Development & Economy

摘　　要：通过对岩心的观察、测井曲线的划分,结合野外剖面及其他地质资料,对鄂尔多斯盆地旦八地区长4+5油层组21口井的单井微相进行了划分。研究认为:旦八地区长4+5主要为陆相河湖三角洲沉积体系,进而可以细分为三角洲平原与三角洲前缘亚相,为下一步有利区的预测奠定了基础。Through the observation to the cores and the classification of logging curves,and connecting with the field profiles and other geophysical data,this paper makes single-well micro-facies classification of 21 wells of Chang4＋5 pay set of Triassic Yanchang Formation in Zhidan-Danba Area of Ordos Basin.The study holds that the Daba Area of Chang4＋ 5 pay set is mainly the delta sedimentary system which could be subdivided into two sedimentary subfacies,delta plain facies and delta front intrafacies,laying a foundation for the prediction of favorable reservoirs.

关 键 词：长4+5油层组 沉积相特征 三角洲沉积 鄂尔多斯盆地 

分 类 号：TE122[石油与天然气工程—油气勘探]