摘要
油气输导体系沟通烃源岩与圈闭,在油气运聚成藏过程中具有关键作用。在前人研究成果的基础上,通过分析油气输导体系的输导机制,对含油气盆地的输导体系进行了研究。结果表明,油气输导机制从根本上来说是油气在空间输导网络中的运移机制,主要包括输导载体、输导动力及其之间的内在联系和演化规律,提出油气输导体系的分类命名原则为输导关键时期—输导方向—输导动力—输导空间,据此可以确定油气输导体系的有效性,进而预测油气藏的分布以及指导油气勘探。以东营凹陷南斜坡为例,将其明化镇组沉积末期的油气输导体系分为3类,分别为明化镇组沉积末期—向上—中高压—中孔隙油气输导体系、明化镇组沉积末期—横向-向上—中高压—大孔隙油气输导体系和明化镇组沉积末期—横向—中高压-浮力—大孔隙油气输导体系。
Hydrocarbon carrier system is important as'the bridge and vinculum'between the oil sources and traps in hydrocarbon accumulation. Based on previous study,hydrocarbon carrier systems were studied through analyzing the migration mechanism. The results obtained show that the hydrocarbon migration mechanism is in essence hydrocarbon migration in space,which includes carriers,driving force and their intrinsic links and evolution. The naming principles of hydrocarbon migration classification were put forward as key migration period,transportation direction,driving force and transportation space,which can be used in the effectiveness evaluation of hydrocarbon carrier system and the prediction of hydrocarbon reservoir distribution to provide guidance for hydrocarbon exploration. As a case of the southern slope in Dongying sag,the hydrocarbon carrier systems formed at the end of the Minghuazhen Formation sedimentary period are divided into 3types,which are the end of the Minghuazhen Formation sedimentary period-vertical migration-middle to high pressuremiddle porosity hydrocarbon carrier system,the end of Minghuazhen Formation sedimentary period-lateral and vertical migration-middle to high pressure-large porosity hydrocarbon carrier system and the end of Minghuazhen Formation sedimentary period-lateral migration-middle to high pressure-buoyancy-large porosity hydrocarbon carrier system.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2015年第1期32-36,共5页
Petroleum Geology and Recovery Efficiency
基金
国家自然科学基金项目"沁水盆地煤层气与致密砂岩气共生成藏机理研究"(41172108)
国家自然科学基金项目"张性断层断裂带水岩相互作用机理及其对断层封闭性影响"(41202091)
山东省高等学校科技计划项目"脆性正断层断裂带水-岩相互作用机理研究"(J13LH02)
关键词
油气输导体系
油气输导机制
断层
骨架砂体
不整合
hydrocarbon carrier system
migration mechanism
fault
sandbody framework
unconformity
