Shiyuan Li

PhD student

Phone:
49-241-80-98439(Office) 49-176-81088585(Mobile)
Office location:
413
Street:
Lochnerstraße 4-20, 52056, Aachen, Germany
Email:
s.li@ged.rwth-aachen.de lishiyuan1983@gmail.com

Personal Information

Male, Born June 2nd 1983, Shanghai, China

PhD student at Geologie-Endogene Dynamik, RWTH Aachen

Director of Ferderation of Chinese Scholars and Students Associations in Germany   (Vorstandsmitglied der CASD, 2009.9-recent)

Member of 58th Student Parliament of RWTH Aachen (Mandatar des SP. der RWTH Aachen, 2009.7-2010.7)

President of Chinese Scholars and Students Associations in Aachen (2008.9-2009.9)

Education

2007.10 - recent: PhD at Geologie-Endogene Dynamik, RWTH Aachen, Germany.

2005.9-2007.8: Master in Civil Engineering and Geoscience Faculty (Structural mechanics), Delft University of Technology, Nethelands (TU Delft).

2001.9-2005.6: Bachelor in Engineering Mechanics Department , Shanghai Jiaotong University,China (SJTU).

1998.9-2001.6: Shanghai Yan'an Senior High School, China.

Awards:

2007 TU Delft Outstanding Master of Science in Netherlands

2005 Shanghai Outstanding Bachelor Graduates in China

2001 Shanghai Outstanding Senior High School Graduates in China

Research interests

Rocksalt mechanics

Salt tectonics

Geomechanical modeling

PhD Project

Contract C211368 „ARA STRINGER PLAY STUDIES“

PROJECT A: Understanding Stringer Deformation and movement of Ara Stringers enclosed in Ara Salt

Picture_209 - Shiyuan Seimic Ara Stringer

Large rock inclusions are embedded in many salt bodies and these respond to the movements of the salt in a variety of

ways, including displacement, folding and fracturing. One mode of salt tectonics is downbuilding, whereby the top of a

developing diapir remains in the same vertical position, while the surrounding overburden sediments subside. We

investigate how the differential displacement of the top salt surface caused by downbuilding induces ductile salt flow and

the associated deformation of brittle stringers, by an iterative procedure to detect and simulate conditions for the onset of

localization of deformation in a finite element model, in combination with adaptive remeshing. The model setup is

constrained by observations from the South Oman Salt Basin, where large carbonate bodies encased in salt form

substantial hydrocarbon plays.

 

The aim of this study is to estalish numericial models and reach the results of a study aimed at contributing to our

understanding of brittle stringer dynamics during downbuilding. We use the finite element method (FEM) to model the

deformation and breaking of brittle layers embedded in ductile, deforming salt bodies.

 

 

Picture_230 - Shiyuan Ara generic model

Picture_231 - Shiyuan Ara generic model evolution model

Picture_744 - Shiyuan Ara generic model principal stress Picture_750 - Shiyuan Ara generic model principal stress zoom1


Picture_752 - Shiyuan Ara generic model principal stress zoom3
Picture_746 - Shiyuan Ara generic model Smin Picture_747 - Shiyuan Ara generic model Smin zoom1
   

 

 

 

 

We presented first results of a study of the dynamics of brittle inclusions in salt during downbuilding. Although the model

is simplified, it offers a practical method to explore complex stringer motion and deformation, including brittle fracturing

and disruption. Under the conservative conditions modelled here, stringers are broken by tensile fractures and

boudinaged very early in downbuilding (~ 50 m top-salt minibasin subsidence) in areas where horizontal salt extension

dominates. Ongoing boudinage is caused by reorganization of the salt flow around the stringers. Rotation and bending of

the stringers is caused by vertical components of the salt flow. Flow stresses in salt calculated in the numerical model are

consistent with those from grain size data. The model can easily be adapted to model more complex geometries and

displacement histories.

 

In the second stage of the project, the sensitivity study has been done for a few various parameters (the location of the stringer,

the thickness of the stringer, the number of the stringer and the configuration of the basement etc.). A few results are shown below:


Picture_1165 - Group1-Modela Picture_1164 - Group1-Modelc


Picture_1166 - Group2-Modela Picture_1168 - Group2-Modelc

Picture_1169 - Group3-Modela Picture_1170 - Group3-Modelb

Picture_1174 - Group4-Modela Picture_1175 - Group4-Modelb

Pulications

Papers

A. Verruijt, R. B. J. Brinkgreve, Shiyuan Li
Analytical and numerical solution of the elastodynamic strip load problem. International Journal for Numerical and Analytical Methods in Geomechanics 32 (1) 65-80. doi:10.1002/nag.616 (2008)
 

Report

Janos Urai, Shiyuan Li, Steffen Abe
Numerical Studies of the Deformation of Salt Bodies with embedded Carbonate Stringers, 2010 period for Petroleum Development Oman LLC (PDO) (2010)
 
Janos Urai, Shiyuan Li, Steffen Abe
Numerical Studies of the Deformation of Salt Bodies with embedded Carbonate Stringers, 2009 period report for Petroleum Development Oman LLC (PDO) (2009)
 
Janos Urai, Shiyuan Li, Steffen Abe
Numerical Studies of the Deformation of Salt Bodies with embedded Carbonate Stringers, 2008 period report for Petroleum Development Oman LLC (PDO) (2008)
 
Janos Urai, Peter A. Kukla, Lars Reuning, Stephan Becker, Steffen Abe, Shiyuan Li
Ara Stringer Play Studies Contract C211368, 2008 period report for Petroleum Development Oman LLC (PDO) (2008)
 

Abstracts

Shiyuan Li, Steffen Abe, Janos Urai
Numerical simulation of the experiment on the measurement of salt creep. EGU General Assembly 2010, Vienna, Austria, 12, EGU2010-10795. (2010)
 
Stephan Becker, Lars Reuning, Peter A. Kukla, Steffen Abe, Shiyuan Li, Janos Urai, Suleiman Farqanu, Zuwena Rawahi
Halite plugging: a major exploration risk in the Ara Stringers of the South Oman Salt Basin. Geological Society - Salt Tectonics, Sediments and Prospectivity, The Geological Society, Burlington House, Piccadilly, London, England, 20-22 January 2010, 93. (2010)
 
Janos Urai, Peter A. Kukla, Heijn van Gent, Steffen Abe, Shiyuan Li, Guillaume Desbois, Johannes Schoenherr, Zsolt Schléder, Lars Reuning, Stephan Becker
Internal Dynamics of Salt Structures. Geological Society - Salt Tectonics, Sediments and Prospectivity, The Geological Society, Burlington House, Piccadilly, London, England, 20-22 January 2010, 52. (2010)
 
Janos Urai, Peter A. Kukla, Heijn van Gent, Steffen Abe, Shiyuan Li, Guillaume Desbois, Johannes Schönherr, Zsolt Schléder, Lars Reuning, Stephan Becker
Workshop: The internal dynamics of salt structures TSK13, Frankfurt am Main, Germany, 6-12. 4. 2010, 63. (2010)
 
Janos Urai, Peter A. Kukla, Heijn van Gent, Steffen Abe, Shiyuan Li, Guillaume Desbois, Johannes Schoenherr, Zsolt Schleder, Lars Reuning, Stephan Becker
The internal dynamics of salt structures. TSK 13 (Workshop), Frankfurt am Main. (2010)
 
Stephan Becker, Lars Reuning, Peter A. Kukla, Steffen Abe, Shiyuan Li, Janos Urai, Suleiman Farqanu, Zuwena Rawahi
Understanding Reservoir Quality in Ara Stringers (South Oman Salt Basin): Diagenetic Relationships in Space and Time. AAPG Geo 2010 Middle East, Bahrain. (2010)
 
Shiyuan Li, Steffen Abe, Janos Urai, Heijn van Gent
Sinking of carbonate and anhydrite stringers in rock salt: insights from numerical simulations. EGU General Assembly 2009, Vienna, Austria, 19 - 24 April 2009, 11. (2009)
 
Shiyuan Li, Steffen Abe, Janos Urai
FEM simulation of the sinking of carbonate stringers in salt: method validation and initial results. Third International Geomodelling Conference, Florence, Italy, September 24, 2008, Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, 49, 396- (2008)
 
Shiyuan Li, Steffen Abe, Janos Urai
Numerical Simulation of the Sinking of Carbonate Stringers in Salt. Geo 2008; International Conference and 106th annual meeting of the Deutsche Gesellschaft fĂĽr Geowissenschaften e. V. (DGG) and 98th annual meeting of the Geologische Vereinigung e.V. (GV) (2008)
 

Theses

Shiyuan Li
Multi-scale modeling on the strain softening of quasi-brittle material, 2007, TU Delft, Netherlands (2007)