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Oilfield Glossary
Oilfield Glossary
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reserve mud pit

1. n. [Drilling Fluids]
Any pit not part of the active (circulatory) system. The reserve pit may be used to store spare or waste mud, base oil or brine. In operations on land, the reserve pit is usually a plastic-lined, earthen pit, in which waste mud is stored until final disposal.
Alternate Form: reserve-mud pit