دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a particle movement method where the particle is carried in a series of short hops along a flow path.

n: see anapulgite.

n: the method and system for the disposal of salt water produced with crude oil. A typical system is composed of collection centers (in which salt water from several wells is gathered),a central treating plant (in which salt water is conditioned to remove scale- or corrosionforming sub- stances),and disposal wells (in which treated salt waste is injected into a suitable formation).

n: an influx of formation salt water into the wellbore.

n: see salt mud.

n: the volume of liquid extracted from the pipe by a single actuation of the sample extractor. The sum of all grabs results in a sample.

n: drilling fluid formulated so that it will not alter the properties of the cuttings the fluid carries up the well.

n: the insoluble abrasive solids contents of a drilling fluid rejected by a 200-mesh screen. Usually expressed as the percentage bulk volume of sand in a drilling fluid. This test is an elementary type in that the retained solids are not necessarily silica and may not be altogether abrasive. For additional information concerning the kinds of solids retained on the 200-mesh screen, more specific tests would be required. See mesh.

n: The percentage of sand that cannt through the screen of 200 eye in the drilling fluid.

v: to plug a well inadvertently with proppants during formation fracturing. Sanding out is usually the result of a slowed fracture-fluid velocity, or screening effect, which allows the proppants to become separated from the fluid instead of being carried away from the wellbore. Also called screening out.

n: a steel tank placed under the shale shaker into which mud falls after passing through the shale shaker. The shaker re- moves mainly cuttings from the mud so solids such as sand and other fine particles fall with the mud into the sand trap. Many of the solids fall out of the mud in the sand trap: those that do not settle out are removed with other specialized solids control mud treatment equipment such as desanders and desilters.

n: A small pit, typically located immediately after the shaker screens, which is used as a settling pit to separate coarser solids that accidentally bypass the shakers. Mud enters the pit at one side and exits via an overflow at the other. Sand traps are dum

a surface vessel in the production line with the specific task or capturing sand before the production goes through a point where the sand may damage equipment.