دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

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: a measurement of the solids deposited on filter paper in thirty seconds of an inch during a standard 30- minute API filter test. See cake thickness. In certain areas the filter cake thickness is a measurement of the solids deposited on filter paper for 7.5 minutes.

n: A measurement of the solids deposited on filter paper in 32nd of an inch during the standard 30-min API filter test. See also cake thickness. In certain areas the filter-cake thickness is a measurement of the solids deposited on filter paper for a 7hmin.

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.

n: A kind of filter paper used in filter experiment with filtration equipment.

n: the lithosomic body of solid phase grain on the filter paper when drill fluid dehydration in the filtration experiment in the quiescent condition.

n: A kind of high level drawing paper,its 50 number paper is the standard filter paper regulated by API.