In-depth insights into the in-situ combustion characteristics of heavy oil: Temperature, oil-gas-water saturation, coke deposition, and enhanced oil recovery - Shuai Zhao; Shiyuan Wang; Qi Gong; Jizhou Zhang; Xiaoqiang Peng; Changfeng Xi; Zongyao Qi; Mikhail A. Varfolomeev; Wanfen Pu; Chengdong Yuan (Fuel, 2026)