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长庆油田在WP区块勘探开发了多个侏罗系小油藏,而该区块沉积相研究不是很深入的现状表明,进一步研究该区块的沉积微相特征是十分必要的。通过对研究区内沉积地层的物源分析以及沉积构造特征和测井相的研究分析,认为该区块延9段发育沉积相为三角洲平原亚相,发育的沉积微相主要有分流河道、天然堤、沼泽微相等。通过沉积相的研究,指出有利产油区,为进一步勘探开发提供地质依据。
The Changqing Oilfield has explored and developed several small Jurassic reservoirs in the WP block. However, the research on the sedimentary facies of this block is not very in-depth. It is very necessary to further study the sedimentary microfacies of this block. Based on the provenance analysis of sedimentary strata in the study area and the study of sedimentary structural characteristics and well logging facies, it is considered that the sedimentary facies of Yan 9 member in this block is the delta plain, and the sedimentary microfacies are mainly distributary channel and natural Dike, swamp micro-equal. Through the study of sedimentary facies, it is pointed out that favorable oil-producing areas provide the geological basis for further exploration and development.