台北凹陷葡萄沟地区岩性油气藏勘探技术
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摘要
台北凹陷葡萄沟地区受后期构造活动掀斜作用的改造,形成了岩性油气藏的构造背景,在吐哈盆地近东西长轴方向物源体系,大型辫状河三角洲前缘与构造形成斜交共同构成了葡萄沟地区岩性油气藏发育的地质基础。葡萄沟地区中侏罗统主要目的层砂、泥岩纵向上薄互层分布及横向上相变急剧的展布格局,砂、泥岩波阻抗分异能力差等因素,使该区岩性圈闭预测十分困难,在油气勘探的过程中,以层序地层学和沉积微相研究为基础,采用岩性随机模拟、测井曲线重构反演、地震属性分析、多属性综合油气预测、地震子波吸收分析、亮点等技术手段,有效的预测并评价了岩性圈闭及油气藏的发育条件,经近几年的勘探技术攻关,发现了葡萄沟地区构造-岩性油气藏富集带。
The tip-tilting effect caused by late tectonic movement has developed Putaogou area of Taibei depression into a lithologic hydrocarbon reservoir with structural setting. Large-scale braided river delta front and tectonic formed an oblique crossing, which constituted a geological base to develop lithologic hydrocarbon reservoir of Putaogou region in east-west long axis direction of sediment origins. The major Mid-Jurassic target reservoir in Putaogou area has interbedded sandstones and mudstones vertically, and rapid facies variations horizontally, and it is difficult to predict lithologic trap with poor wave impedance differentiation ability of sandstones and mudstones in this area. Based on the study of sequence stratigraphyd and sedimentary micro-facies, lithologic stochastic simulation, logging rebuilding, seismic attribute analysis, multi-attribute comprehensive hydrocarbon prediction, seismic wavelet absorption coefficient analysis and blight spot technique are used to predict and evaluate lithologic trap and developmental condition of hydrocarbon reservoir. A lithological reservoir enrichment zone in Putaogou region has been founded.
The tip-tilting effect caused by late tectonic movement has developed Putaogou area of Taibei depression into a lithologic hydrocarbon reservoir with structural setting. Large-scale braided river delta front and tectonic formed an oblique crossing, which constituted a geological base to develop lithologic hydrocarbon reservoir of Putaogou region in east-west long axis direction of sediment origins. The major Mid-Jurassic target reservoir in Putaogou area has interbedded sandstones and mudstones vertically, and rapid facies variations horizontally, and it is difficult to predict lithologic trap with poor wave impedance differentiation ability of sandstones and mudstones in this area. Based on the study of sequence stratigraphyd and sedimentary micro-facies, lithologic stochastic simulation, logging rebuilding, seismic attribute analysis, multi-attribute comprehensive hydrocarbon prediction, seismic wavelet absorption coefficient analysis and blight spot technique are used to predict and evaluate lithologic trap and developmental condition of hydrocarbon reservoir. A lithological reservoir enrichment zone in Putaogou region has been founded.
引文
[1]王劲松,李斌,刘护创,等.台北凹陷葡萄沟-胜金口地区精细目标研究与勘探实践〔J〕.石油天然气学报,2005,27(6):843-846.
[2]何登发.断裂-岩性体油气藏特征〔J〕.石油学报,2007,28(2):22-28.
[3]石玉,李宗杰.塔河油田三叠系岩性圈闭识别与评价技术〔J〕.新疆石油地质,2007,28(3):375-378.
[2]何登发.断裂-岩性体油气藏特征〔J〕.石油学报,2007,28(2):22-28.
[3]石玉,李宗杰.塔河油田三叠系岩性圈闭识别与评价技术〔J〕.新疆石油地质,2007,28(3):375-378.
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