缝洞储集层测井最优化处理  

Logging optimization processing method for fractured-vuggy reservoirs

作　　者：冯周[1,2] 李宁[1] 武宏亮[1] 刘英明[1] 夏守姬[1] 原野[1] 

机构地区：[1]中国石油勘探开发研究院 [2]北京大学地球与空间科学学院

出　　处：《石油勘探与开发》2014年第2期176-181,共6页Petroleum Exploration and Development

基　　金：国家油气重大专项"复杂储层油气测井解释理论方法与处理技术"(2008ZX05020)

摘　　要：由于传统最优化处理方法以均质、层状、各向同性地层模型为基础建立测井响应方程,不适用于非均质、各向异性缝洞储集层,提出了针对缝洞储集层的测井最优化处理新方法,并通过模拟计算和实际测井资料处理对其进行了验证。基于非均质、各向异性缝洞储集层模型建立了测井响应方程及测井最优化目标函数,并结合惩罚函数法和Levenberg-Marquardt算法求解目标函数,算法计算量小、求解效率高。模拟计算结果表明:提出的缝洞储集层最优化处理方法受初始值影响较小,对于不同的随机初始值均能得到最优解,能够满足测井解释的需要。将该方法应用于实际测井资料处理,并与传统最优化处理方法计算结果及岩心分析结果进行对比,结果表明:该方法比传统方法计算精度更高,计算结果与岩心分析结果较接近。In the traditional logging optimization processing methods, logging response equations are built based on the homogeneous, layered and isotropic formation model, they are not suitable for the heterogeneous and anisotropic fractured-vuggy reservoirs. A new optimization processing method aimed at the fractured-vuggy reservoir was presented and its accuracy was confirmed through simulation calculation and actual logging data processing. The logging response equations and objective function for logging optimization problem were built based on the heterogeneous fractured-vuggy reservoir model. Then, the solving algorithm combining penalty function method with Levenberg-Marquardt method was implemented, which had less calculation and high efficiency. The result of simulation calculation shows that the solving algorithm is less affected by the initial value, and the global optimal solution can be gained with random initial values, which meets the needs of logging evaluation. Finally, the proposed approach was applied to the real data processing. Comparison results show that the new method is more accurate than the traditional ones, and it also has a good consistency with the result of core analysis.

关 键 词：缝洞储集层 测井响应 最优化处理方法 测井解释 

分 类 号：P631.84[天文地球—地质矿产勘探]