摘要
在做大量调查研究的基础上 ,对辽河盆地火山岩的油气藏特征及其成藏条件进行了分析和总结。结果认为 ,含油火山岩岩性不同 ,含油产状不同 :安山岩、玄武岩类含油厚度大、层数多 ,含油产状多为油斑 ;粗面岩、凝灰岩类的含油产状多为含油 -富含油。火山岩储层中的孔隙有原生和次生 2种 ,其中次生裂隙是决定储层渗透性的关键。断裂附近是火山岩勘探的最有利地区之一。辽河盆地火山岩成藏条件优越 ,主要发育背斜、地层不整合、披覆背斜、古潜山、断鼻、断块和上倾尖灭等 7种类型油气藏。火山岩油气藏的勘探将成为辽河盆地油气储量、产量的新的增长点。
Based on extensive survey and research, igneous reservoir characteristics and its forming conditions in Liaohe basin have been analyzed and summarized. It is concluded that oil bearing situation varies with lithology of oil bearing igneous rock. In detail, Andesite and basalt features thick and multi oil bearing layers, mostly oil speckle type oil bearing attitude, while that of trachyte and tuff are oil bearing and rich oil bearing in the contrary. Pores in igneous reservoir belong to original and secondary, and secondary fracture is the dominating factor of reservoir permeability. Near rift area is one of the most favorable areas for exploring igneous rock. For Liaohe basin, reservoir forming conditions of igneous rock are outstanding, including anticline, unconformity, drape anticline, buried hill, fault nose, block and updip pinchout. Surely, exploration of igneous reservoir will be a new development point for increasing the reserve and production of Liaohe basin in the future.
出处
《特种油气藏》
CAS
CSCD
2001年第3期6-9,共4页
Special Oil & Gas Reservoirs
关键词
火山岩油气藏
油气藏特征
成藏条件
辽宁盆地
断陷盆地
igneous reservoir, oil & gas reservoir characteristics, reservoir forming condition, analysis, Liaohe basin
