碳酸盐岩油藏提高采收率技术研究应用进展

Progress of research and application of EOR technologies in carbonate reservoirs

介绍了国内外碳酸盐岩油藏实施的注CO2驱、注N2驱、注空气驱、注烃气驱、热采技术和化学驱的历史与现状,同时探讨了未来碳酸盐岩油藏提高采收率技术发展趋势:注气提高采收率技术仍会是主要方法,化学驱可能成为气驱的替代或辅助方式。对于化学驱而言,开发新型化学剂是提高采收率的重要途径,未来的研究应主要集中在以下两个重要领域:①选择显碱性的有机化合物;②研究基于新工程材料("纳米流体")的新流体配方。

The status of EOR methods, including CO2 injection, Nz injection, air injection, hydrocarbon ga- ses injection,steam flooding, and chemical flooding applied in carbonate reservoirs at home and abroad were introduced. Furthermore, the development trend of EOR technologies in carbonate reservoirs are in- vestigated：gas injection will still be the major method, while chemical flooding may become an alternative or auxiliary of gas injection. One of the key points for chemical flooding is to develop new chemicals, of which two promising areas are：~screen and selection of organic compounds with alkaline properties; @design and preparation of new fluid formulations based on nanofluids. This review provides meaningful EOR suggestions for the development of carbonate reservoirs.