Study on Huff and Puff Process for Enhanced Oil Recovery using CO2,N2 and H2O

目录

声明

ABSTRACT

摘要

Table of Content

Chapter 1 Introduction

1．1 Research objectives

1．2 History of some huff and puff projects

1．3 Thesis Outline

Chapter 2 Literature review

2．1 Screening criteria for CO2 huff and puff operations

2．2 Screening and sensitivity analysis of water flooding

2．3 Sensitivity studies for CO2 huff and puff

2．4 Huff and puff parameters on oil recovery

2．4．1 Injection time

2．4．2 lnjection and production rate

2．4．3 Huff and puff cycles

2．4．4 CO2 utilization and soaking time

2．4．5 Pressure on oil recovery

2．4．7 Using nitrogen gas as an injecting fluid

2．5 Reservoir simulation

2．5．1 Flow equations for a black oil model

2．5．2 General description of the compositional models

2．5．3 Mathematical model description

2．5．4 Differences between black oil model and composition model

2．6 Reservoir simulators

Chapter 3 Methodology

3．1 Huff and puff process

3．2 Black oil model for water huff and puff

3．2．1 Well screening

3．2．2 Sensitivity study

3．2．3 Optimization study

3．3 Compositional reservoir model for gas huff and puff

3．3．1 Model verification

3．3．2 Comparing the effectiveness of different injecting fluids

Chapter 4 Huff and puff with water injection

4．1 Determination of well location

4．1．1 Model description

4．1．2 Optimum well location

4．1．3 Field simulation performance

4．2 Primary production

4．3 Sensitivity study for huff and puff

4．4 Optimization

4．4．1 Optimum cumulative water injection

4．4．2 Optimum water injection rate

4．4．3 Optimum injection time

4．4．4 Optimum shut-in time

4．4．5 Optimum production time

Chapter 5 Huff and Puff with Mixed Gas Injection

5．1 Compositional reservoir model

5．1．1 Component and fluid property matching

5．1．2 Compostional model verification

5．2 Sensitivity study

5．3 Optimization of mixed gas CO2 huff and puff

5．3．1 Huff time and puff time

5．3．2 Huff time

5．3．3 Puff time

5．3．4 Optimum injection rate

5．4 Effect of different injecting fluid on oil recovery

5．4．1 Water flooding

5．4．2 Gas flooding

5．4．3 Comparisons between water flooding and gas flooding

5．4．4 Advantage of CO2 over other injecting fluid

Chapter 6 Conclusions and Recommendations

6．1 Conclusions

6．2 Recommendation

ACKNOWLEDGMENTS

REFERENCE