鄂北上古生界隐蔽气藏地震储层预测技术
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摘要
鄂尔多斯盆地北部上古生界陆相致密碎屑岩隐蔽气藏具有低孔、低渗、致密、薄互层、多层叠置和非均质性强的特点.其勘探开发一直是世界性难题.针对该区储层特点,展开了以三维地震为核心的储层综合地球物理预测技术研究,开发应用了储层岩石物理分析、地震属性优化、随机模拟反演、地震吸收衰减、地震频谱分析、地震波正演模拟、地震相划分和AVO等多项技术,形成了一整套适合该地区油气地质特征的方法技术系列,有效提高了储层预测的精度,提高了勘探开发井位部署的成功率.
The clastic reservoir in upper Palaeozoic group of North Ordos basin is hidden reservoir with lower porosity,lower permeability and thinner beds.How to foecast the distribution of river beds and the property of hydrocarbon saturation has become the crux in the exploration and development of the area.In recent years, the integrated reservoir foecasting technology based on 3-D seismic data has been applied in this area.With the application of reservoir petrophysics analysis,seismic attribute optimization,stochastic seismic inversion,seismic attenuation analysis,seicmic spectrum analysis,forward seismic modeling,seismic facies analysis,a set of valid technology has been developed in corresponding works.The application of valid seismic reservoir prediction updates the precision of reservoir description,boosts the successful probability.
引文
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