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Sagizski地区位于哈萨克斯坦滨里海盆地,含油层位主要为三叠系。三叠系储层岩性复杂,主要为钙质石英砂岩,局部发育钙质灰岩间夹煤线,对测井曲线的响应影响较大。为了有效地识别三叠系储层的流体性质,结合测井资料、取心资料及试油投产资料等,研究并总结出了深、浅侧向电阻率法、孔隙度-电阻率-含水饱和度法、P1/2正态分布法、视地层水电阻率-可动油饱和度法共4种流体识别方法。应用这些方法对该地区16口井进行了综合解释评价,储层流体性质评价结果与实际产能有良好的一致性。
The Sagizski region is located in Kazakhstan’s Caspian Sea basin, the main oil-bearing reservoirs are Triassic. The Triassic reservoirs are complex in lithology, mainly composed of calcareous quartz sandstone and locally developed calcareous limestone interbedded coal strata, which greatly affect the response of logging curves. In order to effectively identify the fluid properties of the Triassic reservoir, combined with well logging data, coring data and pilot production data, deep and shallow lateral resistivity methods, porosity-resistivity-water saturation Degree method, P1 / 2 normal distribution method, depending on the formation water resistivity - mobile oil saturation method total 4 kinds of fluid identification methods. Applying these methods to comprehensively evaluate and evaluate 16 wells in this area, the result of reservoir fluid property evaluation is in good agreement with the actual production capacity.