Roland T Okwen

Search results

• 2020

  Assessment of Geothermal Energy Extraction from the Mt. Simon Sandstone at University of Illinois at Urbana-Champaign Using a Doublet Well System

  Okwen, R., Yang, F., Lin, Z., Lin, J. & Stark, T., 2020, Proceedings, 45th Workshop on Geothermal Reservoir Engineering. Vol. SGP-TR-216. 12 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Doublet 100%
  • Mt. Simon Sandstone 100%
  • Well System 100%
  • Geothermal Energy Extraction 100%
  • Wellbore Model 100%

• Feasibility of Deep Direct-Use for District-Scale Applications in a Low-Temperature Sedimentary Basin

  Stumpf, A. J., Frailey, S. M., Okwen, R. T., Lu, Y., Holcomb, F. H., Tinjum, J. M. & Lin, Y. F., 2020, Proceedings, 45thWorkshop on Geothermal Reservoir Engineering. Vol. SGP-TR-216.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Low Temperature 100%
  • Sedimentary Basin 100%
  • District Scale 100%
  • Deep Direct-use 100%
  • Low-Temperature 100%
• 2018

  An Operations Perspective on Injectivity and Capacity

  Frailey, S., Okwen, R. T. & Yang, F., 2018, 14th Greenhouse Gas Control Technologies Conference Melbourne 21-26 October 2018 (GHGT-14). Social Science Research Network, 14 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Injectivity 100%
  • Operations Perspective 100%
  • CO2 Injection 62%
  • Injection Rate 50%
  • Porosity 37%

• Can CO2 enhanced oil recovery give new life to Illinois Basin fields?

  Ellett, K. M. & Okwen, R. T., 2018, Abstracts with Programs - Geological Society of America. Vol. 50:6.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Infrastructure 100%
  • Metrics 100%
  • Oil Field 100%
  • Enhanced Oil Recovery 100%
  • Illinois Basin 100%

• Feasibility of a deep direct-use geothermal system at the University of Illinois Urbana-Champaign

  Stumpf, A., Damico, J., Okwen, R., Stark, T., Elrick, S., John Nelson, W., Lu, Y., Holcomb, F., Tinjum, J., Yang, F., Frailey, S. & Lin, Y. F., 2018, Geothermal's Role in Today's Energy Market - Geothermal Resources Council 2018 Annual Meeting, GRC 2018. Geothermal Resources Council, p. 227-248 22 p. (Transactions - Geothermal Resources Council; vol. 42).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Geothermal System 100%
  • Geothermal Direct Use 100%
  • Deep Direct-use 100%
  • Flow Rate 100%
  • Wellbore 100%

• Modeling Commercial-Scale CO₂ Injection in Mt. Simon Sandstone Near Decatur, IL Storage Sites

  Yang, F., Babarinde, O., Okwen, R., Frailey, S. & Whittaker, S., 2018, 14th Greenhouse Gas Control Technologies Conference Melbourne 21-26 October 2018. Social Science Research Network, 11 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Mt. Simon Sandstone 100%
  • Illinois 100%
  • Storage Site 100%
  • Decatur 100%
  • CO2 Injection 100%

• Thick Siliciclastic Brownfield ROZ: Modeling Development Strategies for CO₂-EOR and Storage

  Frailey, S. M., Okwen, R. & Yang, F., 2018, IEAGHG Modelling and Risk Management Combined Network Meeting. IEA Greenhouse Gas R&D Programme

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Development Strategy 100%
  • Brownfield 100%
  • CO2 Storage 100%
  • Modeling Development 100%
  • CO2-EOR 100%
• 2016

  CO2 trapping in reservoirs with fluvial sedimentary architecture

  Gershenzon, N. I., Ritzi, R. W., Dominic, D. F., David F., O., Mehnert, E. & Patterson, C., 2016, Abstracts with Programs - Geological Society of America. 5 ed. Champaign, IL, Vol. 48.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Sedimentary Architecture 100%
  • CO2 Trapping 100%
  • Reservoir Rock 100%
  • Reservoir Rock Types 75%
  • Capillary Pressure 66%

• Effect of model complexity and relative permeability inputs on geologic carbon sequestration modeling

  Mehnert, E., Chen, Y., Gershenzon, N. I., Kohanpur, A. H., Valocchi, A. J., Okwen, R. T., Patterson, C., Ritzi, J. & Robert W., 2016, Abstracts with Programs - Geological Society of America. Champaign, IL, Vol. 48:5.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Capillary Pressure 100%
  • Model Complexity 100%
  • Relative Permeability 100%
  • Geologic Carbon Sequestration 100%
  • Carbon Sequestration 100%

• Geochemical modeling of Mt. Simon brine extraction and reinjection for plume pressure management

  Berger, P. M., Okwen, R. T. & Dastgheib, S. A., 2016, Abstracts with Programs - Geological Society of America. Champaign, IL, Vol. 48:5.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Plume 100%
  • Reinjection 100%
  • Brine 100%
  • Geochemical Modeling 100%
  • Brine Extraction 100%

• Liquid CO₂ EOR potential in the Illinois Basin: Results of the Mumford Hills pilot

  Okwen, R. T. & Frailey, S. M., 2016, Society of Petroleum Engineers - SPE Improved Oil Recovery Conference. Society of Petroleum Engineers, Vol. 2016. p. 1-13 (SPE - DOE Improved Oil Recovery Symposium Proceedings; vol. 2016-January).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Illinois Basin 100%
  • Recovery Potential 100%
  • Liquid CO2 100%
  • CO2 Flooding 100%
  • CO2-EOR 100%
• 2015

  Assessing CO2 EOR Potential of Three Strategically Located Oil Fields in the Illinois Basin

  Damico, J. R., Monson, C. C., Frailey, S. M., Lasemi, Y., Webb, N. D., Grigsby, N. P., Yang, F., Okwen, R. T., Zhou, R., Freiburg, J. T. & Berger, P. M., 2015, 2015 AAPG Eastern Section Meeting. Indianapolis: American Association of Petroleum Geologists

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Illinois Basin 100%
  • Oil Field 100%
  • CO2-EOR 100%
  • Illinois 100%
  • Infrastructure 50%

• Capillary trapping of CO (sub 2) in reservoirs with fluvial architecture

  Ritzi, R. W., Gershenzon, N. I., Dominic, D. F., Mehnert, E. & Okwen, R. T., 2015, Abstracts with Programs - Geological Society of America. Boulder, CO: Geological Society of America, Vol. 47. p. 322

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Rock Type 100%
  • Capillary Trapping 100%
  • Fluvial Architecture 100%
  • Capillary Pressure 100%
  • Characteristic Relation 75%

• CO2 trapping in reservoirs with fluvial architecture; sensitivity to heterogeneity and hysteresis in characteristic relationships for different rock types

  Gershenzon, N. I., Ritzi, R. W., Dominic, D. F., Mehnert, E. & Okwen, R. T., 2015, AGU 2015 fall meeting. Vol. 2015.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Hysteresis 100%
  • Rock Type 100%
  • Characteristic Relation 100%
  • CO2 Trapping 100%
  • Fluvial Architecture 100%

• The impact of model complexity on CO2 saturation and mass balance

  Mehnert, E., Gershenzon, N. I., Kohanpur, A. H., Okwen, R. T., Patterson, C., Ritzi, R. W. & Valocchi, A. J., 2015, AGU 2015 fall meeting. Vol. 2015.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Mass Balance 100%
  • Model Complexity 100%
  • CO2 Saturation 100%
  • CO2 Mass 100%
  • Capillary Pressure 100%
• 2014

  Assessing Reservoir Depositional Environments to Develop & Quantify Improvements in CO2 Storage Efficiency

  Okwen, R., Frailey, S. & Leetaru, H., 2014, Carbon Storage R&D Project Review Meeting, Developing the Technologies and Infrastructure for CCS, August 12–14, 2014, Pittsburgh, Pennsylvania.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

• Quantifying CO (sub 2) storage efficiencies of geologic depositional environments

  Okwen, R. T., Monson, C. C., Lasemi, Y. & Grigsby, N. P., 2014, Abstracts - AAPG, Eastern Section Meeting. American Association of Petroleum Geologists, Vol. 43.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Depositional Environment 100%
  • Storage Efficiency 100%
  • Illinois Basin 25%
  • Dolomite 25%
  • CO2 Storage 25%
• 2013

  Assessing Reservoir Depositional Environments to Develop and Quantify Improvements in CO2 Storage Efficiency: A Reservoir Simulation Approach

  Okwen, R., Frailey, S. & Leetaru, H., 2013, Carbon Storage R&D Project Review Meeting August 20-22, 2013.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
• 2012

  Alkaline-surfactant-polymer flood application for enhanced oil recovery has potential for significant recovery of remaining reserves in the mature Lawrence Field, Illinois

  Grube, J. P., Blakley, C. S., Damico, J. R., Johanek, P. M., Madhavan, V., Okwen, R. T., Seyler, B. J. & Webb, N. D., 2012, Abstracts: Annual Meeting - American Association of Petroleum Geologists. Tulsa, OK: American Association of Petroleum Geologists, Vol. 2012.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Illinois 100%
  • Enhanced Oil Recovery 100%
  • Remaining Reserves 100%
  • Polymer Flooding 100%
  • Alkaline-surfactant-polymer 100%

• Basin-scale modeling of CO (sub 2) sequestration in the Illinois Basin; progress report

  Mehnert, E., Damico, J., Frailey, S., Leetaru, H., Lin, Y.-F., Okwen, R., Adams, N., Storsved, B. & Valocchi, A., 2012, Midwest Carbon Sequestration Science Conference.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

• Near-Well Pressure Distribution of CO2 Injection in a Partially Penetrating Well

  Mehnert, E. & Okwen, R. T., 2012, Proceedings of the TOUGH Symposium. p. 681-688

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Pressure Distribution 100%
  • CO2 Injection 100%
  • Well Pressure 100%
  • Partially Penetrating Well 100%
  • Pressure Increase 100%
• 2011

  Basin-scale modeling of CO (sub 2) sequestration in the Mount Simon Sandstone of the Illinois Basin; status report

  Mehnert, E., Damico, J. R., Frailey, S., Leetaru, H. & Okwen, R., 2011, Midwest Carbon Sequestration Science Conference. p. 19

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

• Far field pressure monitoring well spacing in open basins with multiple sequestration sites

  Mehnert, E., Okwen, R. T., Frailey, S. M. & Damico, J. R., 2011, American Geophysical Union Fall Meeting. Washington, DC: American Geophysical Union, Vol. 2011.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Sequestration 100%
  • Pressure Monitoring 100%
  • Monitoring Well 100%
  • Far-field Pressure 100%
  • Well Spacing 100%

• Overview of activities for an EOR carbon sequestration pilot within the Illinois Basin

  Monson, C. C., Damico, J. R., Okwen, R. T. & Grube, J. P., 2011, Abstracts with Programs - Geological Society of America. Boulder, CO: Geological Society of America, Vol. 43. p. 314

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Illinois Basin 100%
  • Carbon Sequestration 100%
  • Enhanced Oil Recovery 100%
  • Illinois 100%
  • Oil Production 66%

• Simultaneous injection of wastewater and CO (sub 2) in a heterogeneous aquifer

  Okwen, R. T., Thomas, M. W., Stewart, M., Trotz, M. & Cunningham, J. A., 2011, American Geophysical Union Fall Meeting. Washington, DC: American Geophysical Union, Vol. 2011.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Wastewater 100%
  • Heterogeneous Aquifer 100%
  • Saline Aquifer 100%
  • Simultaneous Injection 100%
  • Carbon Capture and Storage 100%