We have isolated thermophillic bacteria from hot spring water and copper ore collected at a depth of 2 metre in the copper open cast mine.Bioleaching of chalcopyrite ore was carried out at 60 degree centigrade.You can follow this technique to treat petroleum residue.
You have to use and check your thermophilic strains at their growth temperatures on either crude oil or long chain hydrocarbons added to minimal media. Check my paper below through Researchgate:Isolation and characterization of long-chain alkane degrading Acinetobacter sp. BT1A from oil-contaminated soil in Diyarbakır in the south east of Turkey. Bioremediation Journal, 2016