دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

the act of lifting off part of the mud filter cake, at the most permeable sections of the rock, in response to flow produced by draw down.

the inward differential pressure difference that will result in part of the filter cake being removed from the face of the formation (usually over the most permeable and higher pressured sections).

n: the ratio of the force which is required when drilling tools remove along the surface of cake on hole well and the presssure imposed on the cake surface by the tools

n: physical characteristics of cake,for instance,tenacity,thickness,crumbliness,oiliness and so on

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: the percentage of cleared gross suspending solids which entry the fluid during filtering

n: see air cleaner filter element.

n: the flowing rate in the unit filtering area in uint time during filtering

n: the time spend in starting to form pressure difference to reach the maxium pressure difference restricted in advance or low filter discharge which is not allowed