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目前,低孔隙度、低渗透率储层已成为各油田勘探开发的主要对象,也是测井评价面临的难题之一。为解决如何能正确的解释低孔低渗储层中孔隙度,渗透率和油气分布将分四步走。第一步,系统分析了低孔、低渗储层的地质特征、低孔低渗储层的物性及测井响应特征得出储层定性的识识别方法和定量计算模型。第二步,以西峰油田A区块长822储层为研究对象根据取心资料和试油资料,研究储层四性关系,并确定低孔、低渗储层孔隙度、渗透率、饱和度的解释模型和评价标准。第三步,以FORWARD为解释平台对目的层测井曲线进行综合解释。通过对比,解释结果与试油资料一致性较好。第四步,用PETREL对多井测井曲线进行处理得出研究区孔隙度、渗透率和饱合度的平面分布。通过PETREL预测的孔、渗、饱平面分布也将为油田进一步布井开发起到指导性作用。
At present, low porosity and low permeability reservoirs have become the main targets of exploration and development in all oilfields and are also one of the difficult problems in logging evaluation. In order to solve the problem of how to correctly interpret the porosity, permeability and hydrocarbon distribution in low porosity and permeability reservoirs, we will take four steps. The first step is to systematically analyze the geological characteristics of low-porosity and low-permeability reservoirs, the physical properties of low-porosity and low permeability reservoirs, and the well logging response characteristics to get the identification method and quantitative calculation model of reservoir characterization. In the second step, taking the reservoir 822 in Block A, Xifeng Oil Field as the research object, the relationship between reservoir properties and the porosity, permeability and saturation of low-porosity and low-permeability reservoirs were studied based on coring data and oil testing data. Interpretation model and evaluation criteria. The third step, with FORWARD as a platform for interpretation of the target well logging curve for a comprehensive explanation. By contrast, the interpretation of the results and test data consistency is better. The fourth step, PETREL multi-well log curves were processed to obtain the study area porosity, permeability and saturation of the plane distribution. The predicted hole, infiltration and saturation planes through PETREL will also play an instructive role in further well development in the oilfield.