Special Issue on IOR and EOR techniques for shale and tight oil reservoirs
• 大类 : 工程技术 - 3区
• 小类 : 能源与燃料 - 4区
• 小类 : 工程：石油 - 2区
Crude oil production from shale and tight oil plays have been dramatically increasing in the past decade thanks to the commercial application of horizontal drilling and hydraulic fracturing. In particular, North America is the most successful region where shale and tight oil resources are being developed, including Permian, Bakken, Eagle Ford, Niobrara, etc. As reported by EIA, in December 2018, crude oil produced from unconventional plays accounted for more than 55% of the total oil production in the United States. And this is expected to keep increasing in the next two decades. However, primary oil recovery from unconventional reservoirs is very low, generally below 10% for basins in the United States. Therefore, to develop feasible IOR and EOR techniques for shale and tight oil reservoirs is of high significance. In recent years, various methods have been tested in laboratory and field to explore their potential in extracting more oil from fractured tight reservoirs. For instance, CO2is a popular gas that has been extensively studied for EOR from unconventional oil reservoirs, some case studies reported successful results, but others revealed more issues like rapid oil production drop associated with CO2EOR processes. Overall, there are no definite answers to questions including: which IOR and EOR method is the best for shale and tight oil reservoirs, and why it works? How to optimize the IOR and EOR processes, and what have we learnt from pilot tests? From these viewpoints and to further promote the development of IOR and EOR methods for shale and tight oil reservoirs, we would like to call for a special collection of most recent studies on IOR and EOR for shale and tight oil reservoirs.
This special issue will focus on IOR and EOR techniques being developed and applied to shale and tight oil reservoirs, and it intends to cover but is not limited to the following topics:
1. New IOR and EOR concepts, theories, methods, experiments, and techniques for shale and tight oil reservoirs, such as efficient fracturing technologies, imbibition, CO2huff and puff, CO2flooding, CH4injection, chemical flooding, and so forth.
2. Microscopic/Pore-scale studies of IOR and EOR mechanisms for shale and tight oil reservoirs, such as nanofluidic experiments, phase behavior of CO2with hydrocarbon mixtures, molecular simulation, wettability change, and so on.
3. Advanced numerical methods and modelling of IOR and EOR approaches for shale and tight oil reservoirs, such as immiscible/miscible gas injection, mass transfer among fractures and matrices, imbibition, chemical flooding, gas flowback, well interference due to fracture hits, economic analysis, etc.
4. Efficient development of oil shale resources of medium to low maturity, e.g. in-situ conversion process.
5. Re-fracturing technologies.
6. New experiments and modelling to characterize the multiscale and multiphase phenomenon during IOR and EOR processes for shale and tight oil reservoirs.
7. Emerging techniques, tools, and materials related to IOR and EOR approaches for shale and tight oil reservoirs.
8. Formation damage issues associated with IOR and EOR techniques in shale and tight oil reservoirs.
9. Pilot tests and field applications.
10. Artificial intelligence aided IOR and EOR research and application for shale and tight oil reservoirs.