三肇凹陷向斜区葡萄花油层油气成藏模式
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摘要
利用三维地震、测井和岩芯资料对三肇凹陷向斜区葡萄花油层油气来源、断裂特征和沉积微相分析表明:葡萄花油层油均来自下伏青二+三段源岩;葡萄花油层断层具有密集成带特征,且密集带边界断层多为成藏期活动的油源断层;密井网沉积微相揭示葡萄花油层发育典型的河控浅水三角洲沉积,微相类型主要为水下分流河道及末端河控席状砂。结合油水分布和构造特征等成藏主控因素分析,提出向斜区葡萄花油层受油源断层和河道砂体匹配控制油主要分布在断层密集带内及密集带之间的交叉断块圈闭中,最终建立了该区源内短距离垂向运移模式,为开发区外扩提供了指导。
Using three-dimensional seismic,logging and core data,analysis Sanzhao depression syncline area Putaohua oil and gas sources,fracture characteristics and sedimentary facies,witch shows Putaohua reservoir oil are derived from the underlying source rocks Q2+3 sections;Putaohua reservoir fault have a dense like banding characteristics,and more boundary fault of dense banding are oil source fault activities for the accumulation period;dense well network microfacies reveals Putaohua reservoir developed typical river control shallow water delta,mainly microfacies underwater distributary channel and the end of the fluvial sheet sand.Combination of structural characteristics and oil-water distribution rule controlling factors forming analysis,syncline area Putaohua reservoir controlled oil source faults and channel matched,oil mainly distribute in the fault dense banding and cross-block between dense banding,finally set up within a short distance from the source area vertical migration patterns of foreign expansion,for the development area outstep to provide guidance.
Using three-dimensional seismic,logging and core data,analysis Sanzhao depression syncline area Putaohua oil and gas sources,fracture characteristics and sedimentary facies,witch shows Putaohua reservoir oil are derived from the underlying source rocks Q2+3 sections;Putaohua reservoir fault have a dense like banding characteristics,and more boundary fault of dense banding are oil source fault activities for the accumulation period;dense well network microfacies reveals Putaohua reservoir developed typical river control shallow water delta,mainly microfacies underwater distributary channel and the end of the fluvial sheet sand.Combination of structural characteristics and oil-water distribution rule controlling factors forming analysis,syncline area Putaohua reservoir controlled oil source faults and channel matched,oil mainly distribute in the fault dense banding and cross-block between dense banding,finally set up within a short distance from the source area vertical migration patterns of foreign expansion,for the development area outstep to provide guidance.
引文
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2刘宗堡,马世忠,孙雨,等.三肇凹陷葡萄花油层高分辨率层序地层划分及沉积特征研究.沉积学报,2008;26(3);399—406
3迟元林,萧德铭,殷进垠.松辽盆地三肇地区上生下储“注入式”成藏机制.地质学报,2000;74(4):371—377
4王建功,王天琦,梁苏娟,等.松辽盆地北部葡萄花油层浅水湖泊三角洲沉积特征及对油气分布的控制,中国石油勘探,2008;(1):11—16
5罗群.断裂控烃理论与油气勘探实践.地球科学—中国地质大学学报,2002;27(6):751—756
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