磁处理水泥浆应用机理实验研究  

LABORATORY STUDY OF APPLICATION MECHANISM ON MAGNETIZATION CEMENT SLURRY

作　　者：罗云[1] 王铁军[1] 刘庆旺[1] 孙维林[1] 

机构地区：[1]大庆石油学院

出　　处：《石油学报》1997年第2期94-97,共4页Acta Petrolei Sinica

基　　金：中国石油天然气总公司"八五"重点攻关课题

摘　　要：水泥浆经过磁处理后，改变了水泥颗粒的表面性质和胶体的电动特性，拆散了水泥浆体的网状结构，使水泥浆的粘度、切力降低，流动性变好，有利于提高固井顶替效率。磁处理使水泥的水化反应速度加快，水化产物数量增多，结晶、沉淀得更完善，水泥石变致密，水泥石的渗透率降低和强度提高，在固井中能更好地封固油气水层。通过室内系列微观实验，研究了磁处理水泥浆的应用机理，论证了磁处理效果。从室内实验到现场应用都证实了，磁处理水泥浆是提高固井质量的一项新技术，并具有施工简单、投资少和效益高的特点。After cement slurry is treated in magnetization,surface properties of cement particulates and electromotive propertied of colloid are changed and its netted texture is broken.As a result,cement slurry reduces its viscosity and shear force and has larger flowability,which is beneficial to improving displacement efficiency.Moreover,magnetic treatment accelerates hydration reaction speed of cement slurry and increases hydration products,so crystallization and precipitation are being perfected,cement stone is getting compacted.Because of permeability reduction and intensity increase,cement stone will plug and consolidate oil,gas and water layers better.In this paper,it is presented that the application mechanism on magnetization treatment of cement slurry through a seires of laboratory microexperiments.Magnetization treatment effect is expounded and proved.Through laboratory and oil field application,it is proved that cement slurry with magnetization treatment is a new technology of raising cement quality which possesses advantages of simple cementing practice,it invest a little with a high benefit.

关 键 词：水泥浆 固井质量 应用机理 实验研究 

分 类 号：TE256.6[石油与天然气工程—油气井工程]