水淹层电阻率变化规律研究

注水开发油藏加密调整井测井解释准确率不高,部分高电阻率油层解释成果与试油结论不相符合,影响剩余油分布规律研究和剩余油挖潜措施效果。制约水淹层测井解释精度的关键因素是混合地层水电阻率及水淹层电阻率变化规律,研究了混合水地层电阻率及水淹层电阻率随着含水饱和度增大的变化规律。在建立混合水电阻率模型基础上,通过理论分析和数值模拟,讨论不同因素影响下水淹层电阻率的变化规律,以期提高水淹层解释精度和加密调整区块的开发效果。

Development Law of the Water-flooded Reservoir Resistivity

Because of the lower logging interpretation accuracy of infilling adjustment wells with water flooded reservoir, some logging interpretation results fo high resistivity reservoir are not agree with oil testing conclusions, which directly influences study on distribution and exploration effect of the remaining oil.The key factors impacting the logging interpretation accuracy are the resistivity of the mixed formation water and development law of the water-flooded reservoir resistivity, so it is necessary to restudy the resistivity of the mixed formation water and change laws of the water-flooded reservoir resistivity with the increase of water saturation.Based on the resistivity model of the mixed formation water, the development law of the water-flooded reservoir resistivity is discussed by theoretical analysis and numerical simulation under the influence of various factors to improve the accuracy of logging interpretation of infilling adjustment wells of water flooded reservoir and the exploration effect of the remaining oil.