海上某油田PNN测井泥质校正及解释参数敏感性研究

Shale Correction and Sensitivity of Interpretation Parameters of PNN Logging in An Offshore Oilfield

针对海上某油田PNN(pulse neutron neutron)测井泥质含量过高,计算参数选取不当对饱和度计算精度的影响,提出了F因子校正方法,用于消除泥质含量的影响。通过研究标准公式的6个参数的敏感性,准确确定解释参数,提高了饱和度计算精度。该方法在海上某油田进行测试,应用效果良好。

In view of over high shale content and the influence of improper calculation parameters on calculation accuracy of saturation in PNN logging in an offshore oilfield,the method of F-factor correcting was proposed to eliminate the influence of the shale content.By studying the sensitivity of the 6parameters of the standard formula,the interpreting parameters can be accurately determined to improve the accuracy of the saturation calculation.The method is tested in an offshore oilfield and the application effect is good.