API Fluid-Loss Test
API Fluid-Loss Test :
(n.) Drilling Fluids. A test to measure staticfiltration behavior of water mud at ambient (room) temperature and 100-psi differential pressure, usually performed according to specifications set by API, using a static filter press. The filter medium is filter paper with 7.1 sq. in. filtering area. A half-size cell is sometimes used, in which case the filtrate volume is doubled. See: filter cake, filter medium, filtrate, low-pressure, low-temperature filtration test, relative filtrate volume, spurt loss
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