Goal of the analysis:
To evaluate the technical and economic viability of applying EOR methods (e.g., waterflood, gas injection, chemical, thermal) to improve hydrocarbon recovery beyond primary and secondary recovery stages.
Data required:
- Reservoir characterization data (porosity, permeability, fluid composition)
- Well production and decline history
- Pressure, temperature, and rock-fluid interaction parameters
- Water and gas availability, chemical costs, or steam generation capability (depending on EOR method)
- Pilot test results (if available)
- Economic assumptions (oil price, CAPEX, OPEX, discount rate)
Detailed step-by-step instruction on how to conduct the analysis:
1. Review reservoir characteristics for EOR suitability: Examine rock and fluid properties to identify which EOR techniques are potentially applicable (e.g., gas injection in light oil reservoirs, thermal methods for heavy oil).
2. Gather historical production and decline data: Identify the recovery gaps between current recovery levels and theoretical or analogous field potentials, establishing a baseline for EOR improvement.
3. Screen EOR methods: Compare various methods (waterflood, miscible gas, polymer flooding, steam injection, etc.) against reservoir characteristics, resource availability, and cost parameters to shortlist the most viable options.
4. Conduct laboratory or pilot studies: If possible, run lab-scale tests or field pilots to validate the effectiveness of the selected EOR technique and gather performance data.
5. Build simulation models: Use reservoir simulators to model EOR scenarios, estimating additional recovery, breakthrough times, and associated incremental production.
6. Perform economic evaluation: Calculate incremental reserves, capital requirements, operating costs, and net present value (NPV) or internal rate of return (IRR) for each EOR scenario.
7. Develop an implementation roadmap: Outline the required infrastructure upgrades, operating procedures, and monitoring plans for the selected EOR program, taking into account potential risks and uncertainties.
Format of the output of analysis:
- EOR feasibility report summarizing potential methods, incremental recovery estimates, and economic metrics
- Reservoir simulation results showcasing production profiles and recovery forecasts under different EOR techniques
- Risk assessment covering technical, operational, and market uncertainties
- Implementation plan with recommended EOR method, pilot design, and a schedule for full-scale deployment
How to interpret results:
- Higher incremental recovery and favorable economics (e.g., acceptable NPV, IRR) signal that an EOR technique is viable for expanding field reserves.
- A mismatch between predicted and actual pilot outcomes may indicate data gaps or the need to refine simulation models and operational parameters.
- Risk assessment outcomes help prioritize which EOR methods to pursue or eliminate due to technical or economic infeasibility.
Steps a company can take to improve on this measure:
1. Invest in advanced reservoir characterization and lab testing to accurately screen and match EOR techniques with reservoir conditions.
2. Leverage pilot programs to validate assumptions and derisk large-scale EOR projects before committing significant capital.
3. Adopt cutting-edge simulation tools with robust compositional or thermal modeling capabilities to refine EOR designs.
4. Collaborate with technology providers for specialized EOR solutions and knowledge transfer, reducing implementation risks.
5. Monitor and adjust EOR operations in real time (e.g., injection rates, chemical concentrations) based on ongoing performance data to optimize incremental recovery.