| Title | Real-time monitoring of geothermal wells using the dual-differential pressure method |
|---|---|
| Authors | Egill Juliusson, Karl Emil Sveinsson, Ragnar Þórhallsson, Richard Steven |
| Year | 2023 |
| Conference | World Geothermal Congress |
| Keywords | well output, real-time monitoring, orifice plate, two-phase flow, differential pressure |
| Abstract | Landsvirkjun has performed experiments on several methods for measuring production from geothermal wells in real-time. An orifice plate method using three pressure ports was tested, in collaboration with DP Diagnostics and TekTrol, and yielded promising results. The experimental conditions spanned a total flow-rate from 5 to 30 kg/s and enthalpy from 1000 to 2800 kJ/kg. We discuss the experimental setup, data collection, analysis and results in brief. Our main conclusion is that the method can be used to estimate well output in real-time with reasonable accuracy. Another advantage of the method is that the functionality of the sensors and orifice plate can be evaluated in means of a real-time diagnostics algorithm derived from the measurements. |