An integrated heat efficiency model for superheated steam injection in heavy oil reservoirsCongge He, Anzhu Xu, Zifei Fan, Lun Zhao, Angang Zhang, Fachao Shan and Jun HeOil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 74 (2019) 7DOI: https://doi.org/10.2516/ogst/2018082