wall cake

wall cake

[′wȯl ¦kāk]
(petroleum engineering)
In drilling operations, the solid deposit along the hole wall due to filtration of the fluid part of the mud into the formation.
References in periodicals archive ?
Multi-purpose drilling gel provides strong wall cake and formation control for all drilling types.
We add PAC polymers to aid the bentonite fluid to lay down an impermeable wall cake when drilling sands.
1-GEL provides viscosity, gel strength, hole-cleaning, wall cake and lubricity while remaining pumpable.
It also ensured that when the bore path encountered the ground water with a high salt content, wall cake would be maintained and solids could be suspended and flowed.
Kelly says that SW 101 easily hydrates in brackish or sea water, fresh water or a combination of waters; builds effective wall cake; provides excellent fluid-loss control; and minimizes formation damage.