摘要
以沉积学、储层地质学和石油地质学为基础,综合运用岩心观察、测井资料和粒度分析实验对研究区长3油组沉积环境进行研究,以岩石学特征、沉积构造、粒度特征和古生物等相标志为依据,确定了该区主要为辫状河三角洲平原和三角洲前缘两个亚相,主要沉积微相有分流河道、泛滥平原、沼泽、水下分流河道、河口砂坝和分流间湾。详细阐述沉积微相的砂体展布规律和物性特征,得出了沉积微相与油气分布之间的关系,表明分流河道、水下分流河道与河口砂坝是油气聚集的有利微相。
Based on sedimentology, reservoir geology and petroleum geology, the sedimentary environment of Chang 3 oil group in the study area was studied by core observation, logging data and particle size analysis. The petrological features, sedimentary structure, grain size characteristics and paleontological facies marks were used as the basis to determine two subfacies and main microfacies in the area,including braided river delta plain subfacies and delta front subfacies, as well as distributary channel microfacies, flood plain microfacies, swamp microfacies, distributary channel microfacies, mouth bar microfacies and interdistributary bay microfacies. The sand body distribution and physical properties of sedimentary microfacies were elaborated, and the relationship between sedimentary microfacies and oil and gas distribution was obtained, which indicated that distributary channel, underwater distributary channel and estuary sand bar were the favorable microfacies for oil-gas accumulation.
出处
《辽宁化工》
CAS
2018年第1期24-27,共4页
Liaoning Chemical Industry
关键词
演武地区
沉积微相
辫状河三角洲
油气分布
Yanwu area
microfacies
braided river delta
oil and gas distribution
