利用测井数据研究泥质含量和孔隙度之间关系

孔隙度、泥质含量及确定地层水饱和度值的储层评价参数对研究储层特征和评价油气储量的勘探阶段是非常重要。文章是基于斯伦贝谢的方法利用定性和定量方法来实现。孔隙度是从密度曲线及经过泥质含量校正和油气层流体含量得来的。含水饱和度基于实际电阻率,泥质含量和校正后的孔隙度的值来进行计算的。油气资料来源于10个储层厚度从3-40米的孔隙层段。在8号层中最高的油气饱和度是71%,含水饱和度是29%,地层温度是73.05℃,泥质含量是19%,孔隙度是25.4%。泥质含量和孔隙度的关系显示出随着泥质含量的增加孔隙度随之减小。含水饱和度是随着电阻率曲线的值变化明显,电阻率曲线的升高含水饱和度降低。

The Research of Clay Volume and Porosity Based on Well Logging Data

Formation evaluation that includes porosity, clay volume and water saturation estimation is very important stage in prospecting for reservoir characterization and hydrocarbon reserve. The research has been carried out by qualitative and quantitative analysis based on schlumberger method. Porosity is obtained from density log and corrected by clay volume and hydrocarbon fluid content. Water saturation is calculated based on the resistivity （Rt）, clay volume （Vsh） and corrected porosity （φc） parameters. The hydrocarbon is trapped in ten porous zones that have the reservoir thieknest vary between 3m-40m. The highest hydrocarbon saturation occurred in the reservoir-8 that is 71% with water saturation 29%, formation temperature 73.05℃, clay volume 19%, and porosity 25.4%. The correlation between clay volume and porosity showed that the increasing of clay volume result in decreasing porosity. The water saturation is strongly influenced by the value of resistivity log, increasing of resistivity will result in decreasing water saturation.