Expro Excellence
Meters
Expro ActiveSONAR™  resolves customer metering uncertainty
Customer challenges
  • An operator of an offshore field with subsea wells tied back to a FPSO was measuring bulk flow rates for a liquid transfer line using daily single point stock tank values
  • The customer was experiencing issues reconciling the stock tank to the export line readings
  • The customer retrofitted a Vortex meter to the transfer line to provide real-time volumetric measurements to help reconcile the difference between the stock tank and the export readings
  • The Vortex meter readings did not match either the stock tank or export line
  • Both partner and regulatory reporting requirements meant the customer had to resolve their metering uncertainty
  • The customer approached Expro to provide a reliable solution
Expro Excellence
  • Expro proposed using an ActiveSONAR clamp on flow meter to monitor, validate and/or eliminate errors in the existing metering system
  • The ActiveSONAR was installed without any modification to the piping
  • Initially, the Vortex meter was bypassed and the ActiveSONAR was compared to stock tank readings, which were in agreement
  • The Vortex meter was then compared to the ActiveSONAR, which allowed the ActiveSONAR to determine any process issues
Value to client
  • Expro ActiveSONAR™ diagnostic data indicated two different flow characters in the pipe, periods of stable flow and instability
  • The Vortex meter showed significant variability in reported flow rates when compared to stable rates reported by ActiveSONAR
  • The ActiveSONAR flow rate was within a few percent of stock tank measurements
  • Expro was able to highlight the process issues causing the error in the Vortex meter
  • The customer resolved the metering issue and was able to report accurate measurements meeting the regulatory requirements
Contact

Expro ActiveSONAR™  resolves customer metering uncertainty

In Brief
Customer resolves metering uncertainty with Expro ActiveSONAR™
Product Line
Meters
Region
Asia
Customer challenges
  • An operator of an offshore field with subsea wells tied back to a FPSO was measuring bulk flow rates for a liquid transfer line using daily single point stock tank values
  • The customer was experiencing issues reconciling the stock tank to the export line readings
  • The customer retrofitted a Vortex meter to the transfer line to provide real-time volumetric measurements to help reconcile the difference between the stock tank and the export readings
  • The Vortex meter readings did not match either the stock tank or export line
  • Both partner and regulatory reporting requirements meant the customer had to resolve their metering uncertainty
  • The customer approached Expro to provide a reliable solution
Expro Excellence
  • Expro proposed using an ActiveSONAR clamp on flow meter to monitor, validate and/or eliminate errors in the existing metering system
  • The ActiveSONAR was installed without any modification to the piping
  • Initially, the Vortex meter was bypassed and the ActiveSONAR was compared to stock tank readings, which were in agreement
  • The Vortex meter was then compared to the ActiveSONAR, which allowed the ActiveSONAR to determine any process issues
Value to client
  • Expro ActiveSONAR™ diagnostic data indicated two different flow characters in the pipe, periods of stable flow and instability
  • The Vortex meter showed significant variability in reported flow rates when compared to stable rates reported by ActiveSONAR
  • The ActiveSONAR flow rate was within a few percent of stock tank measurements
  • Expro was able to highlight the process issues causing the error in the Vortex meter
  • The customer resolved the metering issue and was able to report accurate measurements meeting the regulatory requirements
Contact

For further information, please contact:

nigel.webster@exprogroup.com