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MFD - Chemical Engineering and Materials Science Graduate Semina
Thu, Dec 11, 2014 @ 11:15 AM - 01:50 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Speaker: Ruijie Liu, PhD, Enhanced Oil Recovery Flagship; Upstream Technology, BP America Inc.
Talk Title: On Development of Geomechanics Cap Model and Its Application to Modeling Reservoir Compaction and Sand Production
Abstract: Oil and gas operators make huge investment in onshore and deepwater facilities that require efficient removal of
hydrocarbons. Significant cost overruns due to non-productive time resulting from wellbore damage and massive
sand production problems. Geomechanics modeling has been providing a powerful analytical tool to petroleum
engineers for better reservoir management. The Drucker-Prager plasticity model is the most popular geomaterial
constitutive law employed in many commercial geomechanics simulators. It is mainly used to model shear-dominated
problems but unable to predict reservoir compaction behaviors. For many reservoirs with soft rocks, the compaction
effect is the leading cause for formation failure and massive sand production during depleting operations.
Geomechanics cap plasticity theories have been proposed for describing both shear and compaction behaviors of
geomaterials. This talk focuses on finite element development on the Pelessone geomechanics cap plasticity model.
The work targets to achieve quadratic convergent rates for solving nonlinear geomechanics problems. This has been
done through deriving and implementing a consistent cap material integrator. The performance of the developed cap
model is demonstrated through solving a near oil well problem. The prediction on sand production curves following
reservoir compaction is also presented.
Biography: Dr. Ruijie Liu is the senior reservoir simulation specialist at Enhanced Oil Recovery Flagship, Upstream Technology,
BP America Inc. His responsibility is developing BP in-house massive parallel computer code for solving multiphase
flow problems with billion cells at pore-scale using rock micro-CT image data. Before joining BP in 2012, he had
worked in ANSYS as the distinguished R & D engineer for more than 7 years. In ANSYS, he developed numerous
nonlinear material models including geomechanics cap model. He is also a major developer for ANSYS coupled
elements and computational frameworks for fracture propagation. He received his PhD from The University of Texas
at Austin in 2004. His current research interests are coupled reservoir dynamics with geomechanics, hydraulic
fracturing, pore-scale modeling, parallel computing for extremely large scale petroleum systems.
In his spare time, he enjoys playing tennis and walking his chocolate lab.
Location: Mark Taper Hall Of Humanities (THH) - 210
Audiences: Everyone Is Invited
Contact: Ryan Choi
