【摘要】 以大牛地气田山一段地层为例 ,从岩心、测井等资料入手 ,通过各种相标志的识别 ,并结合区域地质背景 ,认为该区主要发育一套辫状河三角洲平原沉积 ,其中辫状河河道、分流河道、废弃充填河道 (河道边缘 )、沼泽、泛滥平原 5种微相较为发育 .在此基础上 ,通过横向对比 ,勾绘了不同小层的沉积微相平面分布图 ,从而在宏观上勾勒出该区沉积微相的展布及其演化特征 ,为气藏的勘探开发提供了重要的地质依据更多还原

【Abstract】 The study of sedimentary microfacies is the fundamental work of fine gas reservoir description, and is of important meaning to the exploration and development of gas reservoirs. Shan-1 formation in Deniudi gas field is studied in detail based on core and logging data, various facies marks, and regional geologic background. It is held that there are mainly five kinds of sedimentary microfacies in the area, and they are braided river channel, distributary river course, abandoned channel, marsh and flood-plain.Their characteristics are described The distribution and evolution of the sedimentary microfacies in the area are also discussed, which is favorable to guiding the exploration and development of gas reservoirs.更多还原