The thermochemical sulfate reduction (TSR) occurred in this reservoir, and the asphalt with high sulfur was the result of TSR reaction and provided acidic material such as H2S for dissolution at late.

• 沥青具高含硫特征，这可能与热化学硫酸盐还原作用(TSR)反应有关，TSR反应可使沥青具高含硫特征，同时为晚期溶蚀作用提供了酸性物质H2S等;