 This paper provides an overview of the latest studies about the use of nanoparticles to enhance oil recovery, the injected fluids and secondary processes supplement the natural energy present in the reservoir to displace oil. Your techniques are receiving substantial attention worldwide as the available oil resources are declining. However, some challenges such as low sweep efficiency, high costs and potential formation damage still hinder the further application of these technologies. This article was authored by Xiefei Sun, Yinyu Zhang, Guangping Chen and others.