基于Gristensen算法的砂岩储层横波速度计算方法

由于横波测量成本高,大部分油田测井资料中仅有少部分横波数据,则依据常规测井资料准确构建横波曲线已成为关键.考虑到横波构建理论方法更多地依赖实验室分析资料,提出在Gristensen经验公式基础上,以研究区横波测量曲线为约束,通过优化反演确立公式系数是一种好的研究思路.优化方法实现中采用阻尼型高斯牛顿法,保障了多参数优化迭代的收敛性和精度.将研究方法用于卫星油田横波数据构建中,取得好的计算结果.

Sandstone Shear Wave Speed Calculation Method Based on Gristensen Algorithm

Shear wave data is basis in the reservoir prediction and inversion to the complex oil and gas exploration work.Due to shear wave measuring cost is high;there is only a minority of shear wave data in most of the oil field logging data.Based on conventional well log data to build the accurate shear wave curve has become the key.Considering the shear building theory methods relying more on laboratory analysis data,in this paper,on the basis of Gristensen empirical formula,take shear wave measuring curve as constraint in the study area,by optimizing the established formula coefficient is a good research train of thought.Optimization method of damping type gauss- Newton method ensures the multi-parameter optimization iteration convergence and accuracy.Research methods used in shear wave data to build Weixing oilfield,we obtained good results.