CESS Seminar : A phase-field model for fracture and its applications in geoscience
Abstract:
Fracturing is applied to stimulate wells in hydrocarbon and geothermal energy production. In well stimulation operations, fractures are deliberately created, but they are something to avoid or to be controlled in underground energy and CO2 storage or nuclear waste disposal. This shift in the focus prompts us to study not only propagation but also nucleation of fractures. And subsequently we need simulation capabilities for both propagation and nucleation.
In this presentation, Pr. Keita Yoshioka will briefly go over a phase-field model, which has witnessed contagious popularity originated from the mechanics community to the geo-community. Part of this success is because of its ability to capture complex fracture behaviors, including nucleation and propagation along complex unknown path in 2 and 3 dimensions without the need for ad-hoc criteria and geometric restrictions on crack path. He will then focus on its applications and necessary adaptations for hydraulic fracturing with some comparative examples. Finally, he will close his talk with some application examples in complex hydraulic fracturing.
Short bio
Dr. Yoshioka received his Bachelor of Science in Resources and Environmental Engineering from Waseda University, Japan in 2003 and PhD in Petroleum Engineering from Texas A&M University in 2007.
He then joined Chevron's geomechanics teams in Houston. He conducted internal consulting and corporate researches on various geomechanical problems for more than 10 years including a short term assignment in Chevron's geothermal operation in Indonesia.
In 2017, he moved to Germany and started working on an open source code development project at the Helmholtz Centre for Environmental Research focusing on computational fracture mechanics.
Since 2022, he has been professor for geo-energy production engineering at Montanuniversität Leoben.
Sandwiches offered after the seminar.
Fracturing is applied to stimulate wells in hydrocarbon and geothermal energy production. In well stimulation operations, fractures are deliberately created, but they are something to avoid or to be controlled in underground energy and CO2 storage or nuclear waste disposal. This shift in the focus prompts us to study not only propagation but also nucleation of fractures. And subsequently we need simulation capabilities for both propagation and nucleation.
In this presentation, Pr. Keita Yoshioka will briefly go over a phase-field model, which has witnessed contagious popularity originated from the mechanics community to the geo-community. Part of this success is because of its ability to capture complex fracture behaviors, including nucleation and propagation along complex unknown path in 2 and 3 dimensions without the need for ad-hoc criteria and geometric restrictions on crack path. He will then focus on its applications and necessary adaptations for hydraulic fracturing with some comparative examples. Finally, he will close his talk with some application examples in complex hydraulic fracturing.
Short bio
Dr. Yoshioka received his Bachelor of Science in Resources and Environmental Engineering from Waseda University, Japan in 2003 and PhD in Petroleum Engineering from Texas A&M University in 2007.
He then joined Chevron's geomechanics teams in Houston. He conducted internal consulting and corporate researches on various geomechanical problems for more than 10 years including a short term assignment in Chevron's geothermal operation in Indonesia.
In 2017, he moved to Germany and started working on an open source code development project at the Helmholtz Centre for Environmental Research focusing on computational fracture mechanics.
Since 2022, he has been professor for geo-energy production engineering at Montanuniversität Leoben.
Sandwiches offered after the seminar.
Practical information
- Informed public
- Free
Organizer
- Prof. Olga Fink (IMOS), Prof. Alexandre Alahi (VITA), Prof. Dusan Licina (HOBEL), Prof. Alain Nussbaumer (RESSLab)
Contact
- Prof. Brice Lecampion (GEL)