Drilling in which the drilling fluid is not returned to the surface.



Related Terms

BYPASS VALVE

A valve mechanism that assures system fluid flow when a preselected differential pressure across is exceeded; the valve allows all or part of the flow to bypass the filter element.

SPECTROGRAPHIC ANALYSIS

Determines the concentration of elements represented in the entrained fluid contaminant.

FINITE ELEMENT METHOD

An approximation method for studying continuous physical systems, used in structural mechanics, electrical field theory, and fluid mechanics; the system is broken into discrete elements interconnected tact bed used for filtering purposes. filter cake See mud cake.

DEGAS

Removing air from a liquid, usually by ultrasonic and/or vacuum methods.

COMPRESSIBILITY

Measure of ability of being compressed. The change in volume of a unit volume of a fluid when subjected to a unit change of pressure.

AUTOMATIC PUMPING STATION

An installation on a pipeline that automatically provides the proper pressure when a fluid is being transported.

GRAVITY SETTLING CHAMBER

Chamber or vessel in which the velocity of heavy particles (solids or liquids) in a fluid stream is reduced to allow them to settle downward by gravity, as in the case of a dust-laden gas stream.

INTAKE STROKE

The fluid admission phase or travel of a reciprocating piston and cylinder mechanism as, for example, in an engine, pump, or compressor.

ROLL-OFF CLEANLINESS

The fluid system contamination level at the time of release from an assembly or overhaul line. Fluid system life can be shortened significantly by full-load operation under a high fluid contamination condition for just a few hours. Contaminant implanted and generated during the break-in period can devastate critical components unless removed under controlled operating and high performance filtering conditions.

SUCTION FILTER

A pump intake-line filter in which the fluid is below atmospheric pressure.

Related questions

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