摘要
针对火山岩油气藏形成的特殊性,从油源条件、优质储集层的成因、构造背景等角度,重点分析了牛东油田上石炭统卡拉岗组火山岩油藏形成的控制因素。结果表明,牛东油田卡拉岗组火山岩油藏储集层岩性主要为安山岩、玄武岩,其次为火山角砾岩;溶孔、洞和裂缝是主要的储集空间类型;下伏的哈尔加乌组的暗色泥岩和碳质泥岩等烃源岩所形成的油气,通过断层向上运移到火山岩顶部,然后通过不整合面下的渗透层横向运移并聚集到局部构造的高部位,形成地层岩性油气藏;良好的储集条件、断裂通道、古构造背景以及充足的油源是控制油藏形成的重要因素。
In view of the volcanic reservoir-forming particularity,this paper analyzes the controlling factors of the volcanic reservoir of Kalagang formation of the Upper Carboniferous in Niudong oil field in oil source condition,premium reservoir genesis,structural setting,etc.The result shows that the lithology of this reservoir is dominated by andesite and basalt,secondly by volcanic breccia; solution cavity and fracture are its main types of reservoir space; oil and gas originated from such hydrocarbon source rocks as underlying Harjiawu formation （C2h） dark mudstone and carbon mudstone migrate upward to the top of volcanic rock along the fault,then laterally to the local structural highs along the permeable layers below the unconformity surface,and accumulate as the strati-lithologic reservoir.It is concluded that favorable reservoir rock condition,fracture channel,paleo-structural setting and enough oil source are important factors to control the reservoir formation in this area.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2010年第3期254-256,共3页
Xinjiang Petroleum Geology
关键词
三塘湖盆地
马朗凹陷
石炭纪
火山岩
储集层
油气藏形成
Santanghu basin
Malang sag
Carboniferous
volcanic rock
reservoir rock
hydrocarbon accumulation
