Geomechanical Challenges Associated with Massive Storage of CO2

The next several decades pose enormous challenges, and opportunities, for the global oil and gas industry. While oil and gas will continue to be used for decades to come, it is now recognized that enormous quantities of CO2 have to be stored in subsurface geologic formations to reach global decarbonization goals. In this talk, the presenter will focus on a number of geomechanical issues that have to be considered to ensure long-term storage efficacy. While it has been long recognized that changes in reservoir pressure should not exceed the pressure at which hydraulic fracturing might occur of seal formations, this presentation will focus on a number of other issues have not been sufficiently addressed. First, it is important to identify potentially active faults to limit the possibility that injection-related increases in pore pressure could induce seismic, or aseismic, slip on known faults. Also, as existing evidence shows that potentially active faults (and the damage zones that surround them) are permeable, the presence of potentially active faults represent possible leakage pathways that should be avoided, even when injection-related pressure changes are too small to induce fault slip. Second, when utilizing depleted oil and gas reservoirs for long-term storage of CO2, it is important to understand both the mechanical changes of the reservoir rocks and the stress changes that resulted from depletion. Such knowledge is required to predict how pressure associated with CO2 injection will affect the reservoir. Finally, from the perspective of induced seismicity, it is critically-important to identify reservoirs with both top seals and bottom seals to avoid pressure communication to potentially active faults in the basement.

This webinar is categorized under the Reservoir technical discipline.

All content contained within this webinar is copyrighted by Dr. Mark Zoback and its use and/or reproduction outside the portal requires express permission from Dr. Mark Zoback.

Dr. Mark D. Zoback

Stanford University

Dr. Mark D. Zoback is the Benjamin M. Page Professor of Geophysics, Emeritus at Stanford University, where he was also the Director of the Stanford Natural Gas Initiative and Co-Director of the Stanford Center for Induced and Triggered Seismicity and the Stanford Center for Carbon Storage and Senior Fellow in the Precourt Institute for Energy. Dr. Zoback conducts research on in situ stress, fault mechanics, and reservoir geomechanics with an emphasis on shale gas, tight gas and tight oil production as well as CO2 sequestration. Dr. Zoback served on the Secretary of Energy Subcommittee on shale gas development and the National Academy of Engineering Committee that investigated the Deepwater Horizon accident. He is the author of two textbooks and the author/co-author of about 400 technical papers. His most recent book, Unconventional Reservoir Geomechanics, was written with Arjun Kohli, and published in 2019 by Cambridge University Press. His online course, Reservoir Geomechanics, has been completed by over 10,000 people around the world. Dr. Zoback has received a number of awards and honors including election to the U.S. National Academy of Engineering in 2011 and the Robert R. Berg Outstanding Research Award of the AAPG in 2015. He was the 2020 chair of the Society of Petroleum Engineers Technical Committee on Carbon Capture, Utilization and Storage.

Claudia Bonin de Oliveira (Moderator)

Principal Technical Advisor

Halliburton, Baroid Drilling Fluids Product Service Line

Claudia Bonin is Principal Technical Advisor at Halliburton, at Baroid Drilling Fluids Product Service Line. Since 2018 she is responsible for research and development on Geomechanics and digital solutions for well construction. Previously to this role, Claudia worked in Halliburton Consulting for almost ten years from 2009 to 2018, leading a global geomechanics practice providing consulting services and training on unconventional reservoirs. Claudia holds a PhD degree in Mechanics of Structures from the University of Campinas (Sao Paulo, Brazil), MSc and BS in Civil Engineering from the same university. Before joining Halliburton, she had held a post-doc appointment at Rice University, Houston, and had been a Senior Researcher at the Institute for Technological Research in Sao Paulo Brazil. 

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Geomechanical Challenges Associated with Massive Storage of CO2
12/03/2021 at 10:00 AM (EST)   |  90 minutes
12/03/2021 at 10:00 AM (EST)   |  90 minutes
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0.15 CEU/1.5 PDH credits  |  Certificate available