Chemical Methods for Enhanced Oil Recovery with ECLIPSE
This training course presents the Chemical Enhanced Oil Recovery
(CEOR) methods available in the ECLIPSE simulator.
When using CEOR, chemicals such as surfactants, alkaline solutions, and polymers are added to the displacing water. This changes the physicochemical properties of the water and the contacted oil, making the displacement process more effective. The three main approaches are the use of surfactants, alkaline, and polymers.
In surfactant flooding, the interfacial tension between the oil and the displacing water, and the interfacial tension between the oil and the rock interfaces are reduced so that residual oil can be displaced and recovered.
In alkaline flooding, the reaction of the alkaline compounds with the organic acids in the oil forms in situ natural surfactants that lower the oil-water interfacial tension. Polymers are used to increase the viscosity of the displacing water to improve the oil sweep efficiency.
Examples using these different reovery methods are further covered using ECLIPSE.
Enhanced Oil Recovery fundamentals
- Improved oil recovery versus enhanced oil recovery
- Chemicla EOR processes
- Screening criteria for chemical EOR processes
- General information on polymer flooding
- Polymer chemistry
- Polymer flow behaviour in porous media
- Polymer models in ECLIPSE
- Summary of Polymer model ECLIPSE keywords
The day will begin with a quick overview of material of this three day course. Participants will learn about the different Chemical Enhanced Oil Recovery (CEOR) processes, the concepts, limitations, and challenges of these processes. This is then followed by the Polymer method.
- General information on surfactants
- Surfactant-brine-oil phase behavior
- Capillary number
- Surfactant flooding in ECLIPSE
- Summary of surfactant model ECLIPSE keywords
- Key notes on using Surfactant model in ECLIPSE
Alkaline-Surfactant-Polymer (ASP) flooding
- Displacement mechanisms of ASP flooding
- General information on alkalis
- Alkaline model in ECLIPSE
- Summary of Alkaline model ECLIPSE keywords
- Field applications of Alkaline-Surfactant-Polymer flooding
On day two of the course participants are taken through the Surfactant flooding and the ASP flooding methods of the CEOR simulation process and workflow, along with examples and problems to help the participants use the knowledge obtained throughout the day.
- General information on foam
- Flow of foams in porous media
- Foam model in ECLIPSE
- Summary of foam model ECLIPSE keywords
- Overview of water salinity
- Theoretical aspects of low-salinity water injection
- Low-salinity water injection model in ECLIPSE
- Summary of low salt model ECLIPSE keywords
On day 3, participants will learn about foam flooding and Low-salinity flooding with examples and exercises using ECLIPSE for a better understanding of the two CEOR methods.
- Introduction to Enhanced Oil Recovery methods in general and Chemical Enhanced Recovery in particular
- Polymer flooding
- Sufactant flooding
- Alkaline-Surfactant-Polymer (ASP) flooding
- Foam flooding and
- Low salinity flooding
Reservoir and simulation engineers working on enhanced oil recovery studies
Reservoir Engineering background with good knowledge in using ECLIPSE.