Evaluation and Improvements of Geothermal Models using Inverse Analysis (EIGMIA)
- 09-01-028
Coordinator: Guðmundur Magnús Þór Jónsson, University of Iceland
Project finished in 2013
funding

Total project cost

ISK 49.6 M

GEORG SUPPORT

ISK 16.9 M

book

PROCEEDINGS

15

REPORTS

4

student

Phd students

3

MSC students

5

The project placed emphasis on establishing an inverse modelling methodology to use on three different aspects of geothermal power development, i.e. analysing a geothermal system’s workload, a thermal and structural analysis of wells and wellheads, and optimizing the steam-gathering systems and examining the functionality of separator stations. In the project, experiments have been performed on pressure drops, temperature changes and quality factors used with inverse analysis to adjust models that have been developed for analysing those factors. The main objectives: to develop
a technology to improve usage of geothermal reservoirs and to optimize the placement of wells, the steam-gathering system and separators. Secondly, to enlarge know-how in this important field of geothermal exploration in Iceland.

A key element in the project has been to do all experiments and development work directly on site, using real geothermal gas produced under industrial conditions from fully operating power plants. This will naturally bring in numerous problems and unexpected incidents that would not happen if similar experiments were to be done under artificial laboratory conditions using controlled, synthetic gas.

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Partners

lbnl_lawrence-berkley
university-of-iceland

Publications

 

Final report 2013

Numerical Model for Mist Separators (2014); Bakhshinejad, A., Jónsson, MÞ., Pálsson, H.; Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, Conference proceedings, SGP-TR-202

Using Probabilistic Analysis with Finite Element Modelling of High Temperature Geothermal Well Casings (2013); Skúlason Kaldal, G., Jónsson, M.Þ., Pálsson, H., Karlsdóttir, S.N. ; The 54th Scandinavian Conference on Simulation and Modelling, Conference proceedings.

The Wellbore Simulator FloWell (2013); Gudmundsdottir, H., Jonsson, M.T., Palsson, H.; Proceedings Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, SGP-TR-198

A Coupled Wellbore-Reservoir Simulator Utilizing Measured Wellhead Conditions (2013); Gudmundsdottir, H., Jonsson, M.T., Palsson, H.; Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California; Conference proceedings, SGP-TR-198

Collapse Analysis of the Casing in a High Temperature Geothermal Well (2013); Skúlason Kaldal, G., Jónsson, M.Þ., Pálsson, H., Karlsdóttir, S.N.; Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, Conference proceedings, SGP-TR-199

A Numerical Analysis on Flow in Hydrothermal Systems (2013); Thorvaldsson, L., Palsson, H.; Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, Conference proceedings, SGP-TR-200

Thermal and Structural Analysis of the Casing in a High Temperature Geothermal Well During Discharge (2012); Skúlason Kaldal, G., Jónsson, M.,Þ., Palsson, H., Karlssdóttir, S.,N.; Thirty-Seventh Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California; Conference proceedings, SGP-TR-194

Coupling Wellbore Simulator with Reservoir Simulator (2012); Gudmundsdottir, H., Jonsson, M.Þ., Palsson, H.;  Thirty-Seventh Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California,SGP-TR-194

 

 Improved Power Production Efficiency of Hydrothermal Reservoirs Using Downhole Pumps (2012); Drader, D., Palsson, H., Jonsson, M.,Th.; Thirty-Seventh Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, SGP-TR-195 

 

 Modeling Liquid Dominated Two Phase Flow in Geothermal Reservoirs in Vicinity to, and Inside Wells (2012); Thorvaldsson, L., Palsson, H.; Thirty-Seventh Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, SGP-TR-196 

 

Development of a Coupled Geothermal Reservoir-Wellbore Simulator Using Measured Wellhead Parameters and Inverse Analysis (2012); Gudmundsdottir, H., Jonsson, M.T., Palsson, H.; The 53rd Scandinavian Conference on Simulation and Modelling 

 Methodology for pipeline route selection using the NSGA II and distance transform algorithms (2011); Kjaernested, S.N., Jonsson, MT., Palsson, H.; ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference,  Washington, DC, USA, 5, Parts A and B, 

 

A methodology for optimal geothermal pipeline route selection with regards to visual effects using distance transform algorithms (2011); Kjaernested, S.N., Jonsson, MT., Palsson, H.; Thirty-Sixth Workshop on Geothermal Reservoir Engineering; Stanford University, Stanford, California, SGP-TR-191 

 

Load history and buckling of the production casing in a high temperature geothermal well (2011); Skúlason Kaldal, G., Jónsson, M.Þ., Pálsson, H.,Karlsdóttir, S.N., Þorbjörnsson, I.O.; Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, SGP-TR-191 

 

Simulation of two- phase flow in geothermal pipes using smoothed particle hydrodynamics (2011); Hjartarson, H., Jónsson, M.þ., Pálsson, H.; Thirty-Sixth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, SGP-TR-191; 

 

A Comparative Study of Geothermal Pipeline Route Selection Methods with Visual Effects Optimization (2011); Kjærnested, S.N.; Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, October 

 

 Structural and Stress Analysis of a High Temperature Geothermal Wellhead (2012); Ólafsson, Á.; Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland 

 

 A Coupled Wellbore-Reservoir Simulator utilizing Measured Wellhead Conditions (2010); Guðmundsdóttir, H.; Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland 

 
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