EOR For Unconventional Reservoirs
EOR in low permeability unconventional reservoirs is happening across a number of basins and is rapidly becoming a sub-discipline of petroleum engineering. This class covers what has been done over the last decade with a special focus on huff-n-puff (cyclic) gas injection. This includes how to predict production forecasts and injection volumes required, as well as determining the contribution of different recovery mechanisms. Other techniques such as continuous injection and water/surfactant injection are also considered. We examine field trials across all of the basins and discuss the successes and lessons learned from them. Operational aspects to successfully implement EOR in unconventional wells is also covered.
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Chapter 1 - Introduction and Background
1.01 Unconventional Reservoirs
1.02 Geology/Reservoir Properties
1.03 Developing Unconventional Reservoirs
1.04 EOR Technologies
Chapter 2 - Historical Development of EOR in Unconventionals
2.01 Screening Criteria/Early EOR
2.02 Bakken Case Studies
2.03 Eagle Ford Case Studies
2.04 Other Basin’s Pilots
Chapter 3 - Huff-n-Puff Gas Injection
3.01 Processes/How it works
3.02 Estimating Injection Requirements/Oil Recovery
3.03 Physical Recovery Mechanisms
3.04 Reservoir Oil and Injection Gas Variability
Chapter 4 - Other EOR Methods
4.01 Water/Surfactants
4.02 Nanofluids
4.03 Thermal
Chapter 5 - Operational Aspects
5.01 Design Considerations
5.02 Equipment Considerations
5.03 Potential Pitfalls/Lessons Learned
5.04 Surveillance and Monitoring
Chapter 6 - Economics
Chapter 7 - Review and Summary
Chapter 1 - Introduction and Background
1.01 Unconventional Reservoirs
1.02 Geology/Reservoir Properties
1.03 Developing Unconventional Reservoirs
1.04 EOR Technologies
Chapter 2 - Historical Development of EOR in Unconventionals
2.01 Screening Criteria/Early EOR
2.02 Bakken Case Studies
2.03 Eagle Ford Case Studies
2.04 Other Basin’s Pilots
Chapter 3 - Huff-n-Puff Gas Injection
3.01 Processes/How it works
3.02 Estimating Injection Requirements/Oil Recovery
3.03 Physical Recovery Mechanisms
3.04 Reservoir Oil and Injection Gas Variability
Chapter 4 - Other EOR Methods
4.01 Water/Surfactants
4.02 Nanofluids
4.03 Thermal
Chapter 5 - Operational Aspects
5.01 Design Considerations
5.02 Equipment Considerations
5.03 Potential Pitfalls/Lessons Learned
5.04 Surveillance and Monitoring
Chapter 6 - Economics
Chapter 7 - Review and Summary
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