Real-time monitoring of geothermal wells using the dual-differential pressure method
- Key words
- well output, real-time monitoring, orifice plate, two-phase flow, differential pressure
- Conference
- World Geothermal Congress
- Year
- 2023
- Session
- Production Engineering, Steam Gathering Systems
- Language
- English
- Paper number
- 1395
Full text
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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.
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