دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: any wrench used to hold a pipe or a blot to prevent its turning while another length of pipe or a nut is being screwed into or out of it.

n: The process that drilling fluid is pumped from annular and reverses out from drill pipe. This method is fast than direct flushing.

n pl: a large, widely distributed group of typically one-celled microorganisms. See anaerobic bacteria, sulfate reducing bacteria.

n: Refers to the microbe that makes drilling fluid decrease filtration rate and viscosity due to it can destroy amylum additive.

n: The process that superpolymer is destroied by the microbe and macromolecule fractures to micromolecule.

breaking down alkanes by bacterial action. Common by psedomonis and ultramonis bacteria and other bacterial strains that digest parts of the crude oil structures. Useful for remediating oil spills or tank bottom residuals.

liquefaction or break down of oily waste or clean-up of oil spills by the use of the naturally occurring oil consuming bacteria, chiefly ultramonis and pseudomonis.

n: anything that destroys bacteria.

n: The additive used to kill the bacterias in drilling fluid.

a product that kills bacteria in the water or on the surface of the pipe.

n: The operation that is hard to fish due to the complicated wellbore or fishing.

n: oil that contains a sufficient amount of sediment and water to make it unaccetable to a pipeline or other oil transportation system.

n: 1. a partial restriction, generally a plate, placed to change the direction, guide the flow, or promote mixing within a tank or vessel. 2. a device that is seated on the bit pin, in a tool joint, or in a drill pipe float, to centralize the lower end of a go-devil while permitting the bypass of drilling fluid.

n: A replaceable metal ring inserted in the BHA (q.v.) to act as a landing collar for a survey tool.