Conditioning Orifice Application for Steam Flow Measurement at Lahendong Geothermal Field

Abstract

Flow measurement is vital for both production and reservoir requirement. Orifice has extensively been used for flow measurement device, due to its cheapness, simplicity and the accuracy. Typical standard orifice require certain long distances between orifice and major flow disturbances, which mightn’t come in handy in some area. A product so called conditioning orifice by Rosemount offer much shorter pipe length requirement, saving material cost as a result. Both orifice were successfully applied in steam flow measurement during well testing at the Lahendong geothermal field with less than 5% deviation on conditioning orifice compare to standard orifice. This paper analyze the application of conditioning orifice on geothermal steam flow measurement.