塔南凹陷铜钵庙组油气分布特征及主控因素  

Distribution features and major controlling factors of hydrocarbons in Tongbomiao formation,Tanan sag

作　　者：马立民[1] 林承焰[1] 范梦玮[2] 

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]中国石化胜利油田分公司地质科学研究院,山东东营257015

出　　处：《油气地质与采收率》2013年第5期28-32,112-113,共5页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项"复杂油气藏精细表征及剩余油分布预测"(2011ZX05009-003)

摘　　要：塔南凹陷铜钵庙组不同构造区带之间的油气分布具有严重的不均一性。通过精细油藏描述,系统总结出塔南凹陷铜钵庙组油气分布特征,并对其主控因素进行了分析。结果表明,西部、中部断裂潜山带和中部次凹构造转换带以断块、断背斜和断鼻油藏为主,是油气富集高产的主力区带;中部次凹南、北洼槽以断层-岩性、岩性和地层不整合遮挡油藏为主,储量丰度和油井产能均较低。区带间差异的构造沉积格局控制研究区多种类型油藏的形成与分布;沉积相和成岩相造成的储集相带的差异决定了储层质量,进而控制油气富集程度和油井产能;区带间差异输导体系决定了油气运聚规律,并控制形成3种油气分布模式,即源外不整合输导断控富集模式、源内复合输导相控贫化模式和源边断裂输导断控富集模式。Based on the fine reservoir description achievements, we made a systematic summarization of hydrocarbon distribution features in Tongbomiao formation in Tanan sag, and analyzed its major controlling factors. The results show that the hydrocarbon distribution is extremely heterogeneous in different structure zones in Tanan sag. The west and central fracture burial hill belt and the structural transform zone in the middle secondary hollow are the very place of hydrocarbon enrichment and high-production, and its reservoir types mainly include fault block reservoir, fault anticlinal reservoir and fault-nose reservoir. The reserve abundance and oil-production capacity is lower in south and north trough in the middle secondary hollow, and its reservoir types mainly include fault block-strati graphic oil reservoir, lithologic reservoir and unconformity barrier reservoir. Through the analysis of the main control factors shows that differential structural and sedimentary pattern of the different structure zones controls the formation and distribution of the various reservoir types, the discrepancy of the reservoir facies belt caused by sedimentary facies and diagenism facies determines the reservoir quality and then controls the reserve and productivity of oil, the different hydrocarbon transport system determines the hydrocarbon migration-accumulation rule and controls the formation of three kinds of hydrocarbon heterogeneous distribution models, including outside-source unconformity translocation fault controlling oil-enrichment model, within-source mixed translocation facies controlling oil-depletion model and near-source fault translocation fault controlling oil-enrichment model.

关 键 词：油气分布特征 主控因素 不均一性 油藏类型 油气分布模式 输导体系 铜钵庙组 塔南凹陷 

分 类 号：TE112.2[石油与天然气工程—油气勘探]