predicting elastic rock property changes in a CO2 enhanced oil recovery reservoir using sonic log

Predicting Elastic Rock Property Changes in A CO2 Enhanced Oil
Recovery Reservoir Using Sonic Log Data

Master of Science Thesis Proposal

By
Sen Guan
11/16/2011

TABLE OF CONTENTS
CHAPTER 1

INTRODUCTION .................................................................................................1

1.1 Motivation ..............................................................................................................................1
1.2 Delhi Field, Louisiana ...........................................................................................................2
CHAPTER 2

LITERATURE REVIEW .....................................................................................4

2.1 CO2 EOR in Production .......................................................................................................5
2.2 Geomechanical Related Risk Factors ...................................................................................5
2.2.1 Fault Reactivation ............................................................................................................6
2.2.2 Induced Shear Failure ......................................................................................................6
2.2.3 Borehole Instability .........................................................................................................6
2.2.4 Casing Deformation and Failure ......................................................................................7
CHAPTER 3 POPULATE SONIC LOG BASED ON NEURAL NETWORK .............................8
3.1 Set up relationship between sonic log and triple combo .......................................................8
3.2 Run the neural network based on bulk density, neutron porosity, shale volume ................17
CHAPTER 4 MECHANICAL EARTH MODEL .........................................................................20
4.1 1D Mechanical Earth Model (MEM)

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