Bio


My primary research is on the development of original computational models of coupled hydro-elastodynamic processes in fractured porous media, including fluid flow, poroelastic stress, as well as flow-induced dynamic rupture, slow slip, (micro)seismic source response and seismic wave propagation. I seek numerical solutions of these problems using self-developed and customized code capable of efficient treatment of discrete fractures and the associated physics. I also apply these computational models to investigate a variety of coupled reservoir-geomechanical / geophysical problems, typically involving discontinuities. Throughout my research, I seek not only an in-depth understanding of the fundamental physics but also a good command of discretization methods (particularly the finite element method) and strong coding skills for solving mathematical problems at hand.

In addition to computational modeling, I also carry out research on more 'traditional' reservoir geomechanics. I use analytical approaches to better understand how the full in-situ stress tensor interacts with fluid pressure due to injection/depletion and what are the implications for fault stability and fracture stimulation. Along the way, I have also developed a computerized method for efficiently constraining the stress tensor from various geophysical measurements. I was the teaching assistant of two Stanford graduate level courses, Reservoir Geomechanics (Geophys 202, Spring, 2016) and Unconventional Reservoir Geomechanics (Geophys 208, Spring, 2017).

In my secondary project at Stanford Geophysics, I utilize a physics-based volcano chamber pressure model to test how magma rheological variation modulates the co-eruptive and post-eruptive chamber pressure and the associated surface deformation.

Prior to my Ph.D. program, I worked extensively on building new theoretical models for predicting laboratory-observed nonlinear viscoelastic and viscoplastic behaviors of certain engineering rocks. I numerically implemented the user-defined rheologies in FLAC3D using FISH scripting.

Honors & Awards


  • Michael L. Haider Fellowship, Stanford University (2016)
  • Michael L. Haider Fellowship, Stanford University (2013)

Professional Affiliations and Activities


  • Member, American Rock Mechanics Association (2012 - Present)
  • Member, American Geophysical Union (2012 - Present)
  • Member, Society of Exploration Geophysicists (2015 - 2015)
  • Member, American Association of Petroleum Geologists (2016 - 2016)

Education & Certifications


  • PhD, Stanford University, Geophysics (2018)
  • MS, Stanford University, Geophysics (2015)
  • MS, Tongji University, Civil Engineering (2012)

Stanford Advisors


Current Research and Scholarly Interests


MECHANICS & PHYSICS:
Computational poromechanics
Computational contact mechanics
Hydro-mechanical coupling (poroelasticity) in fractured porous media
Reservoir geomechanics
Reservoir depletion-induced faulting
Fluid-induced seismicity, microseismicity and aseismicity (slow slip)
Rupture dynamics and wave propagation

DISCRETIZATION & COMPUTATION
Galerkin, mixed and extended FEM
FDM
Preconditioner design for saddle-point systems

DATA-DRIVEN:
Deterministic-stochastic 3D discrete fracture networks building from microseismic data, fracture data, fault image data and in-situ stress data
Natural fracture characterization
Leak-off test analysis
In-situ stress and rock strength inversion

Work Experience


  • R&D Intern, TOTAL S.A. (7/2016 - 9/2016)

    Location

    Pau, France

  • Geophysics Intern, EOG Resources, Inc (6/2015 - 10/2015)

    Location

    Fort Worth, Texas

  • Visiting Geomechanicist, OMV Group (6/2014 - 7/2014)

    Location

    Vienna, Austria

  • Teaching Assistant, GP202, Reservoir Geomechanics, Stanford University (4/2016 - 6/2016)

    Location

    Stanford University

  • Teaching Assistant, GP208, Unconventional Reservoir Geomechanics, Stanford University (4/2017 - 6/2017)

    Location

    Stanford University

All Publications


  • Fully Coupled Nonlinear Fluid Flow and Poroelasticity in Arbitrarily Fractured Porous Media: A Hybrid-Dimensional Computational Model. Journal of Geophysical Research: Solid Earth. Jin , L., Zoback , M. D. 2017

    View details for DOI 10.1002/2017JB014892

  • An Analytical Solution for Depletion-Induced Principal Stress Rotations In 3D and its Implications for Fault Stability. AGU Fall Meeting. Jin, L., Zoback , M. D.
  • Modeling Dynamic Shear Rupture and Microseismic Source Responses on Discontinuities Induced by Quasi-Static Flow-Driven Stress in Fractured Porous Media. 51th US Rock Mechanics/Geomechanics Symposium Jin, L., Zoback , M. D., Pourpak, H., Onaisi, A.
  • Including A Stochastic Discrete Fracture Network into One-Way Coupled Poromechanical Modeling of Injection-Induced Shear Re-Activation. 50th US Rock Mechanics/Geomechanics Symposium. Jin, L., Zoback , M. D.
  • Impact of Poro-Elastic Coupling and Stress Shadowing on Injection-Induced Microseismicity in Reservoirs Embedded with Discrete Fracture Networks. AAPG Annual Convention and Exhibition. Jin, L., Zoback , M. D.
  • Identification of Fault Controlled Damage Zones in Microseismic Data - An Example from Haynesville Shale. SEG Technical Program Expanded Abstracts. Jin , L., Zoback, M. D.