As oil fields mature, secondary recovery methods such as Thermal and Water floods become necessary to enhance production. With time, the water cut continues to increase well above 80%. Net oil measurement is critical in high water cut fields. Existing technology struggles to accurately measure high water cut ranges (above 80%). Current cut probe technology struggles to be accurate or repeatable enough to provide the data required for reservoir and well analysis. Until the introduction of the following Net Oil Metering System (NOMS), automated systems have not been able to provide the 0.025% which is needed to report accurate net oil measurement.
High Water cut has always been measured using a 0-100% cut probe. The best of these technologies claim an accuracy of ±2%. With a 90% water cut and 2% accuracy the net oil will be off by 20%; at 95% the net oil will be off by 40%.
With over 20 years of validation and well testing experience, Process Instruments has developed two new systems to address the need for an accurate Net Oil Metering System (NOMS).
Accurate net oil measurement is where the focus of measurement needs to be made, not on the water cut.
