Apparent viscosity (sometimes denoted η) is a rheological property calculated from rheometer readings performed by a Mud engineer on drilling fluid. It is normally abbreviated as AV. It is expressed in cP (centipoise). Centipoise is the amount of force required to move one layer of fluid in relation to another. One centipoise is equal to one hundredth of a poise. A more conventional unit is the SI derived unit mPa·s (millipascal-second; 1 mPa·s = 1 cP).
Read more about Apparent Viscosity: Definition, Scope, Application
Famous quotes containing the word apparent:
“As I confronted her, the changes grew less apparent to me, her identity stronger. She was there, in the full vigour of her personality, battered but not diminished, looking at me, speaking to me in the husky, breathy voice I remembered so well.”
—Willa Cather (1873–1947)