| Title | Pressure Differential Devices for Measuring Total Mass Flow Rate and Enthalpy in Two-phase Geothermal Pipelines |
|---|---|
| Authors | Mohamad Husni MUBAROK, Sadiq J. ZARROUK, John E. CATER |
| Year | 2020 |
| Conference | World Geothermal Congress |
| Keywords | two-phase, mass flow rate, enthalpy, real-time, pressure differential |
| Abstract | Mass flow rate and enthalpy are critical parameters that need to be measured on a real-time basis during production from two-phase geothermal systems as well discharge can significantly change with time, so measurements are needed to identify important transient reservoir events. Without using wellhead separators, existing field measuring techniques are not capable of determining real-time enthalpy and mass flow rate from individual geothermal wells. A new method for the real-time measurement of both enthalpy and mass flow rate using pressure differential devices (such as orifice plates, nozzles, or Venturi meters) has been developed and optimized at multiple geothermal fields in Indonesia and New Zealand. This measurement technique can be applied with high accuracy and repeatability, and is a cost-effective with simple installation for a wide range of geothermal flow conditions. Furthermore, the new technique can be coupled with other enthalpy measurement devices including; load cells, the micro-lip pressure testing method and tracer flowing testing. |