Measuring filtration and cake-building properties is fundamental to treatment and control of drilling fluids. Studying filtrate characteristics, oil, water, or emulsion content, is also essential.
For a drilling fluid, the quantity, type and size of solid particles, emulsified water, and properties of the liquid phase affect the filtration characteristics. Temperature and pressure may influence the interactions of theseb various components. Therefore, filtration tests are often performed at ambient and high temperatures, providing data for comparison.