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Series 3000 MVD Transmitters
NOC Overview
2.5 NOC measurement terminology
The terms used in NOC measurement are listed and defined in Table 2-1. These terms are used in a
variety of process variables and locations throughout the NOC application.
Table 2-1 NOC measurement terms and definitions
NOC term Definition
Gross The sum of the oil volume and the water volume, as measured by the NOC application.
If TMR carry-over is implemented, this value includes oil and water from the gas leg.
Net oil Oil only, measured by volume, corrected to reference temperature, with the oil
shrinkage factor applied. If TMR carry-over is implemented, this value includes oil from
the gas leg.
Water cut Percentage of water in production stream, corrected to reference temperature, with the
water shrinkage factor applied.
Uncorrected water cut Percentage of water in production stream at operating conditions.
Net water Water only, corrected to reference temperature, with the water shrinkage factor applied.
If TMR carryover is implemented, this value includes water from the gas leg.
Back flow Uncorrected volume flow moving backward through the sensor.
Uncorrected oil Oil only, through the oil or oil/water leg, measured by volume, with no corrections
applied. Any configured pressure compensations are applied. Temperature correction
and shrinkage factors are not applied.
Uncorrected water Water only, through the oil or oil/water leg, measured by volume, with no corrections
applied. Any configured pressure compensations are applied. Temperature correction
and shrinkage factors are not applied.
Uncorrected gross Raw volume flow measurement from the oil or oil/water leg.
Density Density of the mixture, with no corrections applied.
Carry-over Oil and water entrained in the gas stream and added back to the net oil and net water
measurements
Carry-under Gas entrained in the liquid stream
Gas volume Volume of gas in the gas stream, calculated by the NOC application from mass flow
data from the gas meter
Actual Flow rate as measured at the time of viewing
Average Rolling average, calculated from the beginning of the applicable time period.
Total Rolling total, calculated from the beginning of the applicable time period.