摘要
为了研究辽河滩海东部的勘探前景和油气成藏规律,基于辽河滩海古近系断块、断鼻型油气藏勘探实践,重点分析该区以下三个问题:辽河滩海东部沉积相分类和特征、沉积体系、油气成藏特征。通过研究分析得出:辽河滩海古近系经历了深陷期、扩张期和再陷期三个阶段;辽河滩海东部古近系发育了近岸水下扇、扇三角洲、辫状河三角洲、三角洲、河流等多种沉积相类型。该区油气藏类型主要有断块油气藏、断鼻型油气藏和岩性上倾尖灭型油气藏等,沉积相类型对该区油气成藏起到了明显的控制作用。
the research of the rules of oil-gas reservoir formation and exploration foreground is base on the exploration of fault block reservoir and fault nose reservoir in the east Subsag around beach sea,Liaohe oilfield.We should discuss three problem: the Characteristics of sedimentary faces,the sedimentary system and the rules of oil-gas reservoir.After the research,we conclusion that the east subsag had deep-subsidence period,Expansion period and another deep-subsidence.It have nearshore subaqueous fan,fan delta,braided river delta,delta and river sedimentary faces.The type of oil-gas reservoir have fault block reservoir,fault nose reservoir,updip sandstone pinchout reservoir and so on.the sedimentary faces control the oil-gas reservoir formation.
出处
《内蒙古石油化工》
CAS
2012年第22期117-120,共4页
Inner Mongolia Petrochemical Industry
基金
中国石油股份公司重大攻关课题"辽河油田增储领域
有利区带与评价技术研究"(2011D-0702)
关键词
滩海
古近系
沉积体系
成藏特征
Beach sea
Paleogene
sedimentary system
rules of oil-gas reservoir formation
