Oil & Gas Glossary 1.0
OIL & GAS TECHNICAL TERMS GLOSSARY
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Search Result for Filtration
spurt loss
The initial loss of mud solids by filtration, making formations easier to drill. See filtration loss.
filtration qualities
The filtration characteristics of a drilling mud. In general, these qualities are inverse to the thickness of the filter cake deposited on the face of a porous medium and the amount of filtrate allowed to escape from the drilling fluid into or through the medium.
filtration
The process of filtering a fluid.
filtration rate
See fluid loss.
filter press
A device used in the testing of filtration properties of drilling mud. See mud.
filtration loss
The escape of the liquid part of a drilling mud into permeable formations.
starch
A complex carbohydrate sometimes added to drilling fluids to reduce filtration loss.
surge loss
The flux of fluids and solids that occurs in the initial stages of any filtration before pore openings are bridged and a filter cake is formed. Also called spurt loss.
filter paper
Porous unsized paper for filtering liquids. API filtration test specifies one thickness of 9-cm filter paper Whatman No. 50, S & S No. 576, or equivalent.
filter cake
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 millimeters.