دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The method that can measure drilling fluid filtration regulated by API. Refered to the filtrated volume of drilling fluid in the condition of routine pressure of 690kpa(+ or -35kpa),filter area of 4580mm2(+ or - 60mm2) and 30min.

n: the thickness of drilling mud filter cake.

n: The measurement of the thickness of the filter cake deposited by a drilling fluid against a porous medium, most often following the standard API filtration test. Cake thickness is usually reported in 32nd of an inch.

n: 1. compacted solid or semisolid material remaining on a filter after pressure filtration of mud with a standard filter press. Thickness of the cake is reported in thirty seconds of an inch or in millimetres. 2. the layer of concentrated solids from the drilling mud or cement slurry that forms on the walls of the borehole opposite premeable formations;also called wall cake or mud cake.

n: (1) The soild residue deposited by a drilling fluid against a porous medium, usually filter paper, according to the standard API filtration test. (2) The soild residue deposited on the wall of a borehole during the drilling of permeable formations.


the layer of solids stranded on the face of permeable formations by liquids driven into the rock by pressure differential towards the formation. When sized correctly the filter cake may completely stop losses.

n: porous unsized paper for filtering liquids. The API filtration test specifies one thickness of 9-centimetre Whatman No. 50, S&S No. 576, or the equivalent filter paper.

n: Porous unsized paper for filtering liquids. API filtration test specifies one thickness on 9-cm filter paper Whatman No.50, S&S No.576, or equivalent.