- drilling mud
a water-based or oil-based suspension of clays pumped into an oil well during drilling in order to seal off porous rock layers, equalize the pressure, cool the bit, and flush out the cuttings. Also called drilling fluid.
* * *mixture of clay, usually bentonite, and water used primarily in oil, gas, and water-drilling operations to carry rock cuttings to the surface and also to lubricate and cool the drilling bit. Special chemicals are added to the mud to compensate for the varying composition of the water and the formation being drilled and to increase the weight of the column. The drilling mud, by hydrostatic pressure, also helps prevent the collapse of unstable strata into the hole and the intrusion of water from water-bearing strata that may be encountered.
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Look at other dictionaries:
drilling mud — ☆ drilling mud n. a suspension of fine grained mineral matter, usually in water, circulated in oil well drilling to cool and lubricate the drill bit, plug up porous surfaces, etc … English World dictionary
Drilling mud — In geotechnical engineering, drilling mud, also known as spud mud (when beginning the drilling process), is a drilling fluid used to drill boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling… … Wikipedia
drilling mud — noun a mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole • Syn: ↑drilling fluid • Hypernyms: ↑lubricant, ↑lubricator,… … Useful english dictionary
Mud logging — Mud log in process. Well logging Gamma ray logging Spontaneous potential logging Resistivity logging Density logging … Wikipedia
Mud motor — (or Drilling Motor) refers to a Progressive Cavity Positive Displacement Pump placed in the Drill string to provide additional power to the bit while drilling. The PCPD Pump uses Drilling Fluid (commonly referred to as Drilling Mud, or just Mud)… … Wikipedia
Mud Gun — is designed for use in a solids control system of a Drilling Rig .It is one kind of special tool which mainly uses for mixing drilling mud in the circulatory system and prevents the mud precipitates. The structure of equipment is simple, flexible … Wikipedia
mud engineer — noun A person overseeing the use and supply of drilling mud on a gas or oil well • • • Main Entry: ↑mud … Useful english dictionary
Drilling fluid — This article is about fluids used when drilling a well. For fluids used with drill bits during metal working, see cutting fluid. Driller pouring a foaming agent down the rod string on a drilling rig In geotechnical engineering, drilling fluid is… … Wikipedia
Mud engineer — A mud engineer (correctly called a Drilling Fluids Engineer, but most often referred to as the Mud Man ) works on an oil well or gas well drilling rig, and is responsible ensuring the properties of the drilling fluid, also known as drilling mud,… … Wikipedia
Drilling rig — For a detailed diagram of a Petroleum drilling rig, see List of components of oil drilling rigs. Drilling rig preparing rock blasting … Wikipedia