According to the analysis of water quality of more than 100 wells,the formation water of the Carboniferous in east Sichuan possesses high density and high direct metamorphic degree.

• 据100多口井水质分析，川东地区石炭系地层水具有浓度高、正变质程度深的特点。绝大部分地区地层水以氯化钙水型为主，局部存在重碳酸钠和硫酸钠水型。