崖城13-1气田储层三维静态模型建立

3D static model-building in Yacheng 13-1 gas field reservoir.

储层三维建模是描述崖城13—1气田平面和层间的非均质性以及更精确地复算储量的有效方法。利用约束稀疏脉冲反演方法对崖城13—1构造的高分辨率三维地震资料进行了反演,得到了全频带的绝对波阻抗数据体。经过测井、地震和储层物性的相关分析,认为地震波阻抗数据可以用于随机建模。确定性建模结果反映出孔隙度变化的大体规律和趋势,但不能较好地反映储层细节变化。序贯高斯同位协模拟技术是适用于崖城13-1气田的有效的储层三维静态建模技术,模拟结果不但能反映出孔隙度的变化规律和变化趋势,还较好地反映出变化的细节,符合地质规律。模拟结果达到了储量复算的要求。

3D reservoir model-building was an effective method that could describe the plane and interlayer heterogeneity, and help to more accurately recount reserves of Yacheng 13-1 gas field. After 3D high resolution seismic data of Yacheng 13-1 structure were inversed using restriction sparse pulse inversion, data volume of full-frequency band absolute wave impedance was gained. The data of seismic wave impedance could be used to build stochastic reservoir model based on the correla- tion analysis among log data, seismic data and reservoir properties. The determinate model-building results could show the approximate rule and trend of porosity change, but not reservoir detail change better. The sequence Gauss parity modeling technique was an effective and available technique of 3D static reservoir model-building for Yacheng 13-1 gas field. Its results show the rule, trend and detail of the porosity change, which tally with the geological rule and fulfill the reserve recounting requirements.