Numerical Simulation on Fluctuation in Wellhead Pressure of Geothermal Well
- Key words
- wellbore flow, unsteady-state, unsteady state
- Conference
- Stanford Geothermal Workshop
- Year
- 2014
- Session
- Modeling
- Language
- English
- Paper number
- Inagaki
Full text
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Abstract
Geothermal wells completed with multi-feedzones may lead to unstable production characteristics such as oscillations of wellhead pressure and discharge rate. Reservoir parameters were examined on the oscillation phenomenon of well characteristics with numerical simulations of wellbore flow. Simulated results showed that depths of flashing point are affected by a degree of inflow of low temperature fluid from shallow feed zone. Specific enthalpy profiles in two-phase flow region of wellbore were discussed in detail.
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