Modelling of chemical and thermal changes in well PN-26 Palinpinon geothermal field, Philippines
- Engineering Science Dept., Univ. of Auckland, Private Bag, Auckland (NZ)
Significant changes in temperature, chloride and silica concentration have occurred in well PN-26 of the Palinpinon Geothermal Field as a result of reinjection fluid returning. The chloride changes are modelled by a simple time-dependent production - reinjection lumped parameter model. Analytic solutions are derived for both constant and variable production rates. The decline in measured wellbore temperature is then modelled by coupling the chloride mass balance model to a fracture flow model. Production silica changes are also modelled by coupling the silica mass balance model for the production area to a transport and deposition model for the fractured zone. The final model in this paper is able to match changes in chloride, temperature and silica.
- OSTI ID:
- 7295990
- Journal Information:
- Geothermics (International Journal of Geothermal Research and its Applications); (United States), Vol. 20:5; ISSN 0375-6505
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOTHERMAL WELLS
REINJECTION
PALIMPINON GEOTHERMAL FIELD
CHLORIDES
DEPOSITION
FLUID FLOW
FRACTURED RESERVOIRS
SILICON OXIDES
SIMULATION
TEMPERATURE DEPENDENCE
VARIATIONS
CHALCOGENIDES
CHLORINE COMPOUNDS
GEOTHERMAL FIELDS
HALIDES
HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
WELLS
150302* - Geothermal Exploration & Exploration Technology- Geochemical Techniques & Surveys
150301 - Geothermal Exploration & Exploration Technology- Geophysical Techniques & Surveys
150906 - Geothermal Engineering- Reservoir Stimulation & Extraction Technology