高渗透性地层泥浆渗透成膜规律及质量评价试验研究  

Experimental study on permeable film formation law and quality evaluation of mud in highly permeable formation

作　　者：黄欢 HUANG Huan

机构地区：[1]聚璜集团有限公司,福建厦门361021

出　　处：《福建建设科技》2025年第2期49-52,64,共5页Fujian Construction Science & Technology

摘　　要：针对高渗透地层泥浆形成泥膜质量较难控制的特点,基于自设计的实验装置,开展了泥浆在不同地层、不同压力下的渗滤试验,以滤水量比为评价指标分析了泥浆参数对成膜效果的影响,并提出了适用于现场的控制指标。结果表明:对于高渗透性、平均孔径较大的地层,形成稳定泥膜所需时间更长,泥膜的稳定性更好;高渗透性地层表面获得稳定泥膜,配制泥浆时应选择粒径相对更大的颗粒,还需要增大泥浆密度保证进入地层孔隙中颗粒含量,同时加入增粘组分提高粘度,显著增强泥浆与颗粒间的结合力,进而改善泥浆的稳定性;滤水量比在0.6以上泥浆才能形成优质泥膜,考虑到实际施工功效,建议滤水量比控制在0.4~0.6。In view of the fact that the quality of mud film formed by mud in highly permeable strata is difficult to control,based on the self-designed experimental device,this paper carried out slurry infiltration tests in different formations and pressures.The influence of mud parameters on the film formation effect was analyzed with filtration loss as the evaluation index,and the control index suitable for the field was proposed.The results show that for formations with high permeability and larger average pore size,it takes longer to form a stable slurry filter cake,and the stability of the slurry filter cake is better;to obtain a stable slurry filter cake on the surface of a high permeability formation,the relatively larger particles should be selected when preparing the slurry,it is also necessary to increase the slurry density to ensure the content of particles entering the pores of the formation.At the same time,viscosity-increasing components are added to increase the viscosity,which significantly enhances the bonding force between the slurry and the particles,thereby improving the stability of the slurry;Slurry above 0.6 can form a high-quality mud film.Considering the actual construction efficiency,it is recommended that the water filtration ratio be controlled at 0.4~0.6.

关 键 词：泥浆 泥膜 滤水量比 颗粒粒径 

分 类 号：TU411[建筑科学—岩土工程]