دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the liquid circulated through the wellbore during rotary drilling and workover operations. In addition to its function of bringing cuttings to the surface, drilling moo cools and lubricates the bit and the drill stem, protects against blowouts by holding back subsurface pressures, and deposits a mud cake on the wall of the borehole to prevent loss of fluids to the formation. Although it originally was a suspension of earth solids (especially clays) in water, the mud used in modem drilling operations is a more complex, three-phase mixture of liquids, reactive solids, and inert solids. The liquid phase may be fresh water, diesel oil, or crude oil and may contain one or more conditioners. See drilling fluid.

n: common term for drilling fluid.

drilling mud. Usually a slurry of weighting and fluid-loss control solids in a liquid.

n: the sheath of mud solids that forms on the wall of the hole when liquid from mud filters into the formation. Also called filter cake or wall cake.

n: also called filter cake. See cake.

the filter cake on the formation formed by dehydration of the solids as the liquid part of the mud (filtrate) leaks off into the formation.

n: the loss mud that along with the solide controll system of mud shaker,desander, desilter, cleaner or centrifuge or the loss mud that clean the mud or mud pool.

n: for the solving the certain problem of mud in the drilling, the technician carries on the experiments in the Lab.and get the result to the probleme over and over until all the problems are resolved.

the liquid part of the mud that invades the formation after the particles are stranded at the surface of the formation.

n: structure at the rig to store and shelter sacked materials used in drilling fluids.

n: a substance. such as salt. potassium chloride. or calcium sulphate. added to drilling mud to minimise the hydration (swelling) of formations with which the mud is in contact.

n: an employee of a mud logging company who performs mud logging. mud logging n: the recording of information derived from examination and analysis of formation cuttings made by the bit and of mud circulated out of the hole. A portion of the mud is diverted through a gasdetecting device. Cuttings brought up by the mud are examined under ultraviolet light to detect the presence of oil or gas. Mud logging is often carried out in a portable laboratory set up at the well.

n: the staff that responsible for collecting and analysising the material of mud and debrics.

the person who monitors the mud for hydrocarbon shows, y use of chemical analysis, microscopic examination or instrumentation.

n: a series of open tanks through which the mud is cycled and conditioned.modern rigs are provide with three or more pits,usually made of steel plate with built-in piping,valves and agitators.