CWP Graduate Research Assistants

(Listed alphabetically by last name)

Alicia Arias
MS candidate

alijohns@mines.edu

Advisor: Paul Sava

Alicia’s research projects encompass seismic data processing and real-time GPR data processing.

Yogesh Arora
PhD candidate

yarora@mines.edu
Yogesh Arora CV

Advisor: Ilya Tsvankin

Yogesh uses Kirchhoff migration for diffraction imaging in anisotropic media. He is currently working on estimating anisotropy parameters from diffractions.

Tong Bai
PhD candidate

tbai@mines.edu
Tong Bai CV

Advisor: Ilya Tsvankin

Tong’s research focuses on Q-related processing in anisotropic media. With two developed viscoelastic VTI propagators based on GSLS model (for inversion) and Kjartansson’s constant-Q model (for imaging), he has conducted FWI for attenuation estimation, and demonstrated the necessity of understanding Q-anisotropy by applying Q-compensated time-reversal imaging for microseismic source characterization.

Samuel Courville
MS student

scourvil@mines.edu
Samuel Courville CV

Advisor: Paul Sava

Samuel is researching how to collect full coverage seismic data from asteroids and small planetary bodies with a laser doppler vibrometer. His work could one day provide planetary scientists with much needed information on the internal structures of asteroids, which can validate or discredit solar system formation hypotheses. Samuel’s project is funded by NASA.

Oscar Jarillo Michel
PhD Candidate

ojarillo@mines.edu
Oscar Jarillo Michel CV

Advisor: Ilya Tsvankin

Oscar uses full-waveform inversion to estimate the location, mechanism, and origin time of earthquakes as well as the velocity parameters in anisotropic media.

Xueyi (Alex) Jia
PhD student

jia@mines.edu
Xueyi (Alex) Jia CV

Advisor: Roel Snieder

Alex’s passion lies in making frontier seismic methods (processing, imaging, and inversion) applicable for practical energy exploration and production. His research focus is to implement Marchenko imaging to 3D and field data, and to explore the geophysical applications of the Marchenko framework.

Colton Kohnke
PhD student

ckohnke@mines.edu
Colton Kohnke CV

Advisor: Paul Sava

The focus of Colton’s research is localized joint inversion of seismic and electromagnetic data with reservoir monitoring applications.

Vladimir Li
PhD candidate

vli@mines.edu
Vladimir Li CV

Advisor: Ilya Tsvankin

Vladimir’s research is focused on image-guided migration-based travel time tomography and waveform inversion for acoustic TI media.

Xun (Jack) Li
MS student

lixun@mines.edu
Xun (Jack) Li CV

Advisor: Roel Snieder

Jack’s research involves (a) seismic monitoring during hydraulic fracturing, (b) a unified interpretation of both the elastic nonlinearity and slow dynamics (recovery of rocks) in resonance experiments, (c) evolution of induced seismicity (geothermal) and its insight on microearthquake triggering mechanism, hydraulic fracturing efficiency and seismic hazards assessment & control.

Ivan Lim Chen Ning
PhD student

ivanlimchenning@mines.edu
Ivan Lim Chen Ning CV

Advisor: Paul Sava

Ivan’s primary focus is to capture the full strain tensor from distributed acoustic sensing (DAS) data acquired using judiciously chosen and spatially variable optical fiber geometry. He also engages in elastic wavefield imaging and tomography with accurate wavefield extrapolation technique using both stress and displacement data derived from his multicomponent DAS data measurements.

Qifan Liu
PhD student

qifanliu@mines.edu

Advisor: Ilya Tsvankin

Iga Pawelec
PhD student

ipawelec@mines.edu
Iga Pawelec CV

Advisor: Paul Sava

Iga examines different sources of uncertainty in the seismic imaging and develop understanding how uncertainty propagates from a velocity model to a seismic image. The expected outcome is to provide a scheme for quantitative uncertainty assessment in the seismic imaging.

Aaron Prunty
PhD student

prunty@mines.edu
Aaron Prunty CV

Advisor: Roel Snieder

Aaron is interested in applying a rapid and efficient shape reconstruction technique for time-lapse monitoring in disordered media. The technique offers several advantages compared to conventional methods, including no required a priori knowledge of the time-lapse change, no weak scattering assumption, no “up-down” decomposition of the wave field, and no restriction on the acquisition geometry.

Thomas Rapstine
PhD student

trapstin@mines.edu
Thomas Rapstine CV

Advisor: Paul Sava

Thomas is currently exploring alternatives for acquiring land seismic data without touching the ground surface. The specific focus of his current research is on the feasibility of using stereo vision and so-called video motion magnification for deducing subtle ground motion from video.

Daniel Rocha
PhD candidate

drocha@mines.edu
Daniel Rocha CV

Advisor: Paul Sava

In order to obtain an improved estimation of the subsurface physical properties within fewer iterations, Daniel utilizes imaging operators derived from the wavefield energy norm for least-squares migration and tomography. Such operators exploit polarization and directionality from the extrapolated wavefields to mitigate artifacts that retard convergence towards the desired subsurface model.

Patipan (Mickey) Saengduean
PhD student

psaengduean@mines.edu
Patipan Saengduean CV

Advisor: Roel Snieder

Patipan’s research interests are microseismisity and seismic interferometry. He is currently working on the applications of the virtual seismic method (VSM) to obtain wave responses (Green’s function) and to hopefully obtain geo-mechanical properties within different source scenarios (e.g., subduction earthquakes and micro-earthquakes induced by fluid injections).

Harpreet Singh Sethi
PhD student

hsethi@mines.edu

Advisor: Ilya Tsvankin

Sagar Singh
PhD student

sagarsingh@mines.edu
Sagar Singh CV

Advisor: Ilya Tsvankin

Sagar is currently working on Full Waveform Inversion(FWI) for Reservoir Characterization with the idea to constraint FWI work-flow using rock physics relationship with elastic properties to provide very high resolution image in depth domain. He is currently working with Elastic VTI model and will extend it to an elastic orthorhomic model in future. He also intends to do targeted reservoir parameter inversion using local solvers in time domain.