摘要
用高温高压动态流动装置对泥浆动失水下形成的泥饼的渗透率、孔隙度及泥饼厚度的影响因素进行了研究。试验结果表明：动失水下形成的泥饼的渗透率、孔隙度在一定剪切速率下随压差的提高而下降，泥饼厚度增加；在一定压差下随剪切速率的提高，动泥饼渗透率，孔隙度增大，厚度减少；在一定剪切速率、压差下，渗流介质的渗透率增加，动泥饼的渗透率和厚度增大。动失水时间越长，形成的泥饼越厚，动泥饼渗透率在１．２５ｈ失水以后基本不变，随时间的延长变化甚小。
The permeability, porosity and thickness of mudcakes formed under dynamic filtration were studied with HTHP dynamic flowmeter.The test results show the permeability and porosity of this kind of mudcakes reduces as different pressure increases under certain shear rate and mudcake thickness increases:as shear rate increases under certain different pressure, the permeability and porosity of dynamic mudcakes increases and thickness reduces; under certain shear and defferent pressure,the permeability of filtrati...
出处
《石油钻探技术》
北大核心
1995年第3期29-32,61,共5页
Petroleum Drilling Techniques
关键词
动失水
泥饼
渗透率
孔隙度
压差
剪切速率
dynamic filtration
mudcake
permeability
porosity
different pressure
shear rate
