摘要
鄂尔多斯盆地上三叠统延长组广泛发育冲积扇、河流、湖泊、扇三角洲、辫状河三角洲和曲流河三角洲沉积。其中扇三角洲和辫状河三角洲在岩石类型、沉积结构、沉积构造、沉积旋回、沉积背景及岩电组合上有很大的相似性,其骨架主要为河道砂体,但可以根据陆上沉积组合来区分。这两种粗碎屑三角洲具有良好的储集油气潜能,是今后油气勘探不可忽视的相带。
Yanchang formation of the Upper Triassic in the Ordos basin have a wide distribution of alluvial fan, fluvial, lacustrine, fan delta, braided delta and meander delta deposits. The fan delta and braided delta deposits are much similar in rock type, sedimentary texture, structure, sedimentary cycle, sedimentary background, and rock-electronic assemblage, with their frameworks being mainly channel sandbodies; but they can be distinguished by their subaerial sedimentary combinations. These two types of coarse clastic delta have great potential of oil and gas reservoirs, and cannot bet negnected in the further oil and gas exploration.
出处
《中国石油勘探》
CAS
2002年第4期36-40,共5页
China Petroleum Exploration
