دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the process of remedying or restoring an area or situation to its natu- ral (or as close to natural as possible) state. remote BOP control panel n: a device placed on the rig floor that can be operated by the driller to direct air pressure to actuating cylinders that turn the control valves on the main BOP control unit, located a safe distance from the rig.

n: a system of blowout preventer controls, convenient to the driller, which can be used selectively to actuate valves at the master control panel. Also called secondary control panel. See also drillers BOP control panel.

n: an instrument that provides indications of pressure, vacuum, voltage, and so forth at a point distant from where the indications are actually taken.

n: an auxiliary set of controls for operating the blowout preventers. remote terminal unit (RTU) n: that part of an automated lease that relays signals from the central computer to the end de- vices and relays status and alarm conditions from the end devices to the computer.

n: (ROY) in offshore operations, an underwater device controlled from a vessel on the waters surface that is used to inspect subsea equipment, such as a pipeline, and that can be used in place of or in conjunction with diving personnel.

usually an unmanned diving vehicle that performs repairs or maintenance on a subsea well.

n: 1. the closeness of the results of successive measurement of the same quantity carried out by the same method, by the same person with the same measuring instrument at the same location over a short period of time. 2. the ability of a meter and prover system to repeat its registered volume during a series of consecutive proving runs under constant operating conditions.

n: the act of putting enough drilling fluid in the wellbore to replace the volume of any pipe or other tools that were removed.

n: a small portion extracted from the total volume of material that contains the same proportions of the various flowing constituents as the total volume of liquid being transferred. The precision of extraction must be equal to or better than the method used to analyze the sample.

n: 1. the closeness of the results of measurements of the same quantity where the individual measurements are made by different observers using different methods with different measuring instruments at different locations after a long period of time, or where only some of the factors listed are different. 2. the ability of a meter and prover system to reproduce results over a long period of time in service where the range of variation of pressure, temperature, flow rate, and physical properties of the metered liquid is negligibly small.