吐哈盆地葡萄沟地区岩性油气藏勘探技术
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摘要
吐哈盆地台北凹陷葡萄沟地区受后期构造活动的改造,形成了岩性油气藏的构造背景和发育条件。葡萄沟地区中侏罗统主要目的层砂、泥岩纵向上呈薄互层分布,横向上急剧相变,而且砂、泥岩波阻抗分异性差,使该区岩性圈闭预测十分困难。本文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、平点等技术手段,有效地预测了岩性圈闭及油气藏的发育条件,发现了葡萄沟地区构造—岩性油气藏富集带。
The structural background and developing condition of lithologic oil/gas reservoir have been formed in Putaogou area of Taibei sag after the reformation of late structural activity. The sandstone and mudstone, the Middle Jurassic major objective layer in Putaogou area, is characterized by distribution of flaggy alternative beds vertically and rapid facies-changing laterally, and poor differentiation of sandstone from mudstone by wave impedance, which brought about difficulty to predict the lithologic trap in the area. Based on sequence-stratigraphy and sedimentary micro-facies study, the paper used lithologic random simulation, logging reconstruction inversion, analysis of seismic attributes, integrative multi-attribute oil/gas prediction, analysis of seismic wavelet absorption and flat spot techniques to effectively predict the lithologic trap and developing condition of oil/gas reservoir, discovering the abundance zone of structural-lithologic oil/gas reservoir in Putaogou area.
The structural background and developing condition of lithologic oil/gas reservoir have been formed in Putaogou area of Taibei sag after the reformation of late structural activity. The sandstone and mudstone, the Middle Jurassic major objective layer in Putaogou area, is characterized by distribution of flaggy alternative beds vertically and rapid facies-changing laterally, and poor differentiation of sandstone from mudstone by wave impedance, which brought about difficulty to predict the lithologic trap in the area. Based on sequence-stratigraphy and sedimentary micro-facies study, the paper used lithologic random simulation, logging reconstruction inversion, analysis of seismic attributes, integrative multi-attribute oil/gas prediction, analysis of seismic wavelet absorption and flat spot techniques to effectively predict the lithologic trap and developing condition of oil/gas reservoir, discovering the abundance zone of structural-lithologic oil/gas reservoir in Putaogou area.
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.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.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.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.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.新疆石油地质,2007,28(3):375~378
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