用于提高石油采收率的纳米技术研究进展

Application of nanotechnology in enhancing oil recovery

对近年来纳米技术在提高原油采收率方面的应用作了较详细的介绍和评述。其中包括由表面活性剂和疏水改性纳米粒子组成的纳米乳液、纳米粒子增强的粘弹表面活性剂体系、固体纳米粒子稳定的CO2气体泡沫和纳米分子沉积膜的作用机理及提高采收率的应用效果;还包括微-纳米颗粒封堵技术、纳米降压增注技术、纳米材料改性破乳技术、尤其是油藏纳米机器人等技术在石油开发方面的应用;并提出了应用于提高石油采收率领域的纳米技术发展方向。

Application of nanotechnology in enhancing oil recovery was described in detail, which mainlyincluded the action mechanism and oil recovery enhancing effects of nano-emulsion consisting of surfac- rant and hydrophobic modification of nanoparticles, viscoelastic surfactant stimulation fluids with nanopar-ticles, supercritical CO2 foams stabilized by nanoparticles, and molecular deposition film. The application of micro-nanometer particle plugging technology, displacement pressure decreasing and augmented injec-tion nanotechnology, modified nano-material technology in breaking emulsion, reservoir nanorobots in en-haneing oil recovery were reviewed. And the development direction of nanotechnology in the field of en- hance oil recovery was presented.