用分形几何描述粘土及砂岩的粒度分布特征  

Study on particle size distribution of clay mineral and sandstone by fractal geometry

作　　者：贺承祖[1] 华明琪[1] 

机构地区：[1]成都理工学院二系

出　　处：《钻井液与完井液》1997年第6期3-5,共3页Drilling Fluid & Completion Fluid

摘　　要：在油井作业中,颗粒堵塞地层孔隙喉道,造成储层损害。根据分形几何理论,导出了物质粒度分布的两参数分形结构表示式,对有关粒度分布的文献资料的计算结果表明,该方法可用于计算各种粘土矿物及砂岩颗粒的分布分形参数,也可计算各种分散剂、絮凝剂以及酸化对颗粒分布分形参数的影响。将砂岩的成岩,钻井液的性能以及水敏、酸敏、速敏损害同有关颗粒物质的分布分形参数联系起来,有助于深入了解储层损害的机理。The two-parameter expression for the particle size distribution were derived by fractal geometry method. It is shown that the fractal parameters of clay mineral and sandstone, their change caused by some reagent and acidizing treatment can be calculated according to this expression by cacu-lating some informations about particle distribution. The fractal parameters of particle size is useful for the study of formation of sandstone, mud property, water sensitivity and acid sensitivity.

关 键 词：粒度分析 粘土 砂岩 分形几何 油井作业 

分 类 号：P642.133[天文地球—工程地质学] TE358[天文地球—地质矿产勘探]