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川中广安地区须家河组气藏属低孔隙度低渗透率砂岩储层。相对常规储层而言,其气、水层测井响应特征差异不明显,导致利用测井资料判别储层流体性质的难度大。文章从研究区的地质特征和测井响应特征出发,进行储层流体性质判别方法适应性研究。从多种流体性质判别方法中优选了3种适合研究区的方法。通过实际应用,达到了油气水层识别的目的,取得了良好的地质应用效果。
The gas reservoir of Xujiahe Formation in Guang’an area of central Sichuan is a low porosity and permeability sandstone reservoir. Relative to conventional reservoirs, the gas and water logging response characteristics of the obvious difference, resulting in the use of well logging data to determine the nature of reservoir fluid difficult. Based on the geological characteristics and logging response characteristics of the study area, the article studies the adaptability of reservoir fluid properties. Three kinds of methods suitable for the study area were selected from a variety of fluid identification methods. Through practical application, the purpose of oil-gas aquifer identification has been achieved and a good geological application effect has been achieved.