Numerical study of underground CO2 storage and the utilization in depleted gas reservoirs
eBook - PDF

Numerical study of underground CO2 storage and the utilization in depleted gas reservoirs

,
  1. 200 pages
  2. English
  3. PDF
  4. Available on iOS & Android
eBook - PDF

Numerical study of underground CO2 storage and the utilization in depleted gas reservoirs

,

About this book

Carbon capture and storage (CCS) is considered as the most promising technology for slowing down the atmospheric CO2 emissions. However, CCS has not been implemented on large scale because of the related risks and the lack of financial incentives. Regarding the risks associated with CCS, a parametric uncertainty analysis for CO2 storage was conducted and the general roles of different key geomechanical and hydrogeological parameters in response to CO2 injection were determined, which is beneficial for guiding time and effort spent mitigating the uncertainty to acquire trustworthy model forecasts and risk assessments. Regarding the financial incentives of CCS, co-injection of CO2 with impurities associated with enhanced gas recovery was analyzed, which is advantageous for decreasing the cost on gas separation and generating additional economic profit. In addition, the utilization of CO2 as cushion gas in the underground gas storage reservoir was proposed and analyzed, which can also be beneficial for improving the cost-effectiveness of CCS. Overall, this thesis is advantageous for promoting the application of CCS on large scale and mitigating the atmospheric CO2 emissions.Die Kohlenstoffabscheidung und –speicherung (CCS) gilt als die vielversprechendste Technologie zur Verlangsamung der atmosphĂ€rischen CO2–Emissionen. CCS wurde jedoch aufgrund der damit verbundenen Risiken und des Mangels an finanziellen Anreizen nicht in großem Umfang implementiert. In Bezug auf die mit CCS verbundenen Risiken wurde eine parametrische Unsicherheitsanalyse fĂŒr die CO2-Speicherung durchgefĂŒhrt und die allgemeinen Rollen verschiedener geomechanischer und hydrogeologischer SchlĂŒsselparameter als Reaktion auf die CO2-Injektion ermittelt. Dies ist hilfreich, um den Zeit- und Arbeitsaufwand fĂŒr die Minderung der Unsicherheit zu verringern, um vertrauenswĂŒrdig zu werden Modellprognosen und Risikobewertungen. In Bezug auf die finanziellen Anreize von CCS wurde die gleichzeitige Injektion von CO2 mit Verunreinigungen im Zusammenhang mit einer verbesserten GasrĂŒckgewinnung analysiert. Dies ist vorteilhaft, um die Kosten fĂŒr die Gastrennung zu senken und zusĂ€tzlichen wirtschaftlichen Gewinn zu erzielen. DarĂŒber hinaus wurde die Verwendung von CO2 als Polstergas im unterirdischen Gasspeicher vorgeschlagen und analysiert, was auch zur Verbesserung der Wirtschaftlichkeit von CCS beitragen kann. Insgesamt ist diese These vorteilhaft, um die Anwendung von CCS in großem Maßstab zu fördern und die atmosphĂ€rischen CO2-Emissionen zu verringern.

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Information

Year
2021
Print ISBN
9783736973862
eBook ISBN
9783736963863
Edition
1

Table of contents

  1. 1 Introduction
  2. 1.1 Introduction of underground CO2 storage
  3. 1.2 Mechanisms of CO2 storage
  4. 1.3 Geologic storage options of CO2
  5. 1.4 Risk assessment of underground CO2 storage
  6. 1.5 Methods for improving the cost-effectiveness of CO2 storage
  7. 1.6 Prospects of CCS/CCUS technologies
  8. 1.7 Research objectives
  9. 2 THM coupled geo-processes of underground CO2 storage
  10. 2.1 Multiphase and multicomponent flow
  11. 2.2 Mechanical behavior of formation rocks
  12. 2.3 THM coupling processes
  13. 2.4 THM coupling models in TOUGH2MP (TMVOC)-FLAC3D
  14. 3 Parametric uncertainty analysis for CO2 storage
  15. 3.1 Methodology
  16. 3.2 Simulation schemes
  17. 3.3 Correlation of formation response with parameter uncertainty
  18. 3.4 Surrogate model based on SVR
  19. 3.5 Application of the SVR surrogate model to sensitivity analysis
  20. 3.6 Summary
  21. 4 CO2 storage with impurities associated with enhanced gas recovery indepleted gas reservoirs
  22. 4.1 Impurity gas related to CO2 storage
  23. 4.2 Generic model based on literature study
  24. 4.3 Simulation schemes
  25. 4.4 Dedicated for CO2 storage
  26. 4.5 CSEGR
  27. 4.6 Preliminary economic analysis
  28. 5 CO2 as cushion gas for underground natural gas storage in depleted gasreservoirs
  29. 5.1 Simulation schemes
  30. 5.2 Properties and mixing behavior of the gases in the UGSR
  31. 5.3 Impacts of geological and engineering parameters
  32. 6 Conclusions and outlook
  33. References