摘要
基于对沉积序列中岩性及组合、沉积构造与结构、古生物特征、粒度分析、自然电位划分相等一系沉积相标志的研究,并结合区域地质背景,认为西峰油田董志区属于浅水三角洲沉积相,共识别出河口砂坝、水下分流河道、远砂坝、水下天然堤及分流间湾4种微相。长81期的主要沉积微相是水下分流河道,预测长81储层物性好于长82的。
According to provenance index analysis,rock types,grain size analysis,sedimentary structural features and electrofacies analysis,combined with regional geological setting,it's considered that Dongzhi region in Xifeng oilfield attributes shallow-water delta.Four sedimentary facies types include underwater distributary channels,subseanatural levees,residual mouth bars and interdistributary bays.And underwater distributary channels are mainly sedimentary facies of Chang 81 reservoir.It's predicted that the physical properties of Chang 81 reservoir are better than Chang 82 reservoir.
出处
《辽宁化工》
CAS
2012年第12期1275-1278,共4页
Liaoning Chemical Industry
关键词
沉积相
砂体展布
西峰油田
董志区
sedimentary facies
lateral distribution of sandbodies
Xifeng oilfield
Dongzhi region
