Glossary of Industry Terms

This library of terms is constantly growing. If you cannot find a term you need or would like to suggest a term to add to this glossary email us at memberservice@plsx.com

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M (NonProducing Minerals)

Maximum allowable working pressure (MAWP)

The maximum gauge pressure permissible at the top of a completed vessel in it's operating position or a designed temperature. The pressure is based on calculations for each element in a vessel using nominal thicknesses, exclusive of additional metal thick

Mercaptans

Naturally occuring compound found in natural gas. Has a strong offensive odour, and sometimes added to sweet natural gas as an odourizer.

MMSCFD

Million Standard cubic feet of gas per day. Usually specified at 60F and 14.7 psia.

Mud (Drilling Mud)

Fluid circulated down the drill pipe and up the annulus during drilling to remove cuttings, cool and lubricate the bit, and maintain desired pressure in the well.