A Novel Method For Simulate the Drilling Fluid Filtration Under Dynamic Conditions

Efficient fluid filtration could lead to formation damage reduction and the stuck pipe minimization in over-balanced operations# filtration volume depends not only on the rheological properties of the drilling fluid but also on the static or dynamic conditions of mud in the hole# in static conditions, the mud cake formed on wellbore increases and filtrate volume decreases continuously with time# however, at the real condition in well, due to mudflow circulation, the mud cake deposited on wellbore will be eroded and the volume of filtrate loss in near-wellbore could be increased# in this study, a novel method for measuring and modeling the filtration phenomenon under dynamic conditions has been conducted# a filtration cell using an agitating system that can be measuring the rheological changes of drilling fluid due to the loss of the base fluid of drilling mud has been developed# afterward, in order to model the wall shear stress on the mud cake face, a cfd simulation was performed# the results show that this method is useful and operational for modeling of mud filtration under dynamic conditions#