X地区钻井过程中根据井况不同,采用淡水和盐水2中不同性质泥浆钻井,导致盐水泥浆钻井储层段电阻率低于相邻井同层的电阻率,致使电阻率不能正确反映地层流体特征。在分析X地区储层特征的基础上,通过27块岩心实验数据建立泥浆侵入电阻率校正模板,还原电阻率对地层的真实响应,进而准确评价地层含油性。 In the X region, different types of muds are drilled in freshwater and brine 2 according to the different well conditions, resulting in that the resistivity of the drilling fluid in the salt mud is lower than the resistivity of the same layer in the adjacent well, and the resistivity can not correctly reflect the formation fluid characteristics . Based on the analysis of the reservoir characteristics in X area, the mud invasion resistivity calibration template was established through 27 core experimental data to reduce the real response of resistivity to the formation, and then to accurately evaluate the formation oilness.