摘要
延长组是鄂尔多斯盆地的一套重要含油地层,前人对延长组层序地层的研究较多,但从成因角度开展的论述较少。本研究利用地震和测井资料,对延长组层序地层进行划分与成因论述。结果表明,延长组划分为5个长期(LSC)、21~25个中期(MSC)基准面旋回层序。延长组层序内部的构型反映盆地基底构造特征的差异升降和不均衡沉降对西部地层和沉积相的空间变化。
The Yanchang Formation is an important oil-bearing stratum in the Ordos Basin.Previous studies on the sequence formation of the extended group were more numerous,but they were less discussed from the perspective of genesis.Using seismic and well logging data,the division and cause of the extended sequence sequence are discussed in this study.The results showed that the extended group was divided into 5 long-term(LSC)and 21~25 medium-term(MSC)datum plane cycles.The internal configuration of the extended group sequence reflects the difference in the structural characteristics of the basin basement and the spatial variation of the western stratum and sedimentary facies.
作者
何拓平
He Tuoping(School of Earth Sciences and Engineering,Xi’an Shiyou University;Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi’an Shiyou University,Xi’an 710065,China)
出处
《中国资源综合利用》
2020年第1期42-44,共3页
China Resources Comprehensive Utilization
基金
国家科技重大专项“中生界低渗透储层非均质性评价技术”(项目编号：2016ZX05050006)的阶段性研究成果之一
关键词
鄂尔多斯盆地
延长组
地层
沉积
Ordos Basin
Yanchang Formation
stratum
sediment
