地层切片技术在印度河盆地N井区的应用

Application of Stratigraphic Slice Technology in N Well Block of the Indus Basin

印度河盆地N气田A砂层为海相三角洲前缘储集层,储层薄,相变快,预测难度大。针对该特点,综合测井及试油成果进行了地层划分对比,充分利用地震资料横向分辨率高的优势,采用地层切片技术精细刻画了砂体的展布形态,在测井相分析基础上总结出该区沉积相平面分布特征,结合构造形态准确刻画出该区气藏规模,为气田下一步勘探开发提供了依据。

The sand in N Gasfield of the Indus Basin is marine delta front reservoir,but its prediction is difficult because of its quick change of facies and thin reservoir.To solve the difficulty,this study makes the stratigraphic correlations by integrating the previous logging and oil testing results and formulates the distribution pattern by using stratigraphic slice technology,taking the advantage of high lateral resolution of seismic data.On the basis of log facies analysis,the characteristics of the sedimentary facies distribution are summarized and the gas reservoir scale is precisely identified by the structural forms.This study provides evidence for the further gas exploration and development in the area.