多曲线融合技术在储层随机反演中的应用

在储层预测研究中,某些复杂地区存在声波时差曲线受诸多因素的影响而很难真正反映储层特征的问题,为此提出了综合利用自然伽马、自然电位、电阻率等特征曲线,在不同的地层单元内,用多曲线信息融合的方法进行约束反演,其目的是构建一条既能较好反映岩性,又能保持时深关系前后一致的拟声波时差曲线,进行随机反演,使结果更能突出储层与围岩的差异,提高剖面的纵向分辨率和横向连续性。

THE APPLICATION OF MULTI-CURVE BLEND TECHNOLOGY TO RESERVOIR STOCHASTIC INVERSION

In the study of reservoir prediction,the sonic logging curve is easily affected by various factors and cannot reflect the characteristics of the reservoir,especially in some complex areas.In view of this,this paper puts forward a multi-curve blend method that uses natural gamma,natural potential and resistivity curves in different layers to reconstruct a new pseudo acoustic curve which can not only better reflect the lithology but also keep the consistency of the time-depth relation.The result of stochastic inversion can highlight the difference between the reservoir and the surrounding rock and greatly improve the vertical resolution and lateral continuity of the impedance inversion profile.