دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an adjustable choke that is power-operated to control pressure of flow. See adjustable choke.

n: The adjustable choke controled by pneumatics or hydraulic pressure. Used for controlling the pressure and circulating rate.

n: A kind of afflux pipe with several imports and valves, used for cementing and connecting several cement injection lines. Controlling pressure and circulating rate and sending cement slurry to cement head.

n: the volume flow rate of the circulating drilling fluid usually expressed in gallons or barrels per minute in the United States. Elsewhere, it is expressed in cubic metres per minute.

n: The circulating rate of drill fluid in the drilling programe.

n: The circulating method of keeping required circulating rate of drilling fluid.

n: A method of examining overflowing or leakage in the wellbore. Acquiring difference of circulating rate by computing the difference of delivery capacity and return flow of pump with electro magnetic current meter.

n: the speed, or velocity, of fluid flow through a pipe or vessel.

n: refer to“circulating rate”