Net Oil Metering Systems (NOMS)

Technical Overview

Introduction

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.

We now have two systems to offer

  • NOMS-I has no separation and is used in production areas where there is very little entrained gas, <5%. With the development of our new patented Automated Sample Receiving System and our exiting Proportional to Flow sampling and handling system, we can now offer automated systems which are  installed downstream of existing manifolds or separators.
  • This skid mounted system consist of the following:
  • Patented Automated Sample Receiving System capable of collecting up to six 2000ml composite samples. Well test duration is selected during test selection the maximum number of tests per 24 hour period is limited to six.
  • Rockwell MicroLogix PLC which will interface with the customers SCADA system
  • RedLion Data Logger / web server
  • E+H Q Series 2” Coriolis meter and transmitter
  • 2” Isokinetic Sampling System and Static mixer
  • 2” Bypass Loop
  • 600# ANSI flanges, valves and meters.
  • System to include leveling jacks.
  • System to be sandblasted and painted with 3 part zinc oxide epoxy paint.
Net Oil Metering System (NOMS-I)
  • NOMS-II (Proposed for AMAL) has a Two Phase Gas-Liquid Cylindrical Cyclone Separator (GLCC) which is used in areas with free gas and steam slugs. This technology has been developed by the University of Oklahoma and proven to very efficient for separation of two-phase flow.
  • This skid system consist of the following:
  • 12” OD x 93” S-S, ASME 2019 Edition, Section 8, Div1, Vertical GLCC – Rated for 63 Bar @204C.
  • E+H DP Level Transmitter with 2” 600# chemical seals and capillary.
  • E+H Q Series 2” Coriolis meter and transmitter Automated Sample Receiving System capable of collecting up to six 1500ml composite samples
  • Automated Sample Receiving System capable of collecting up to six 1500ml composite samples
  • Up to six well tests per day.
  • Rockwell MicroLogix PLC which will interface with the customers
  • RedLion Data Logger / web server communicate with customer’s SCADA system for test results
  • 2” Isokinetic Sampling System and Static mixer
  • 2” inlet/outlet/bypass ESD valves to be automated with Rotork CMQ 1000 Electric Actuators, super caps for fail safe operation
  • 600# ANSI Flanges, valves and meters.
  • System to include leveling jacks.
  • System to be sandblasted and painted with 3 part zinc oxide epoxy paint.
Net Oil Metering System (NOMS-II)