The hydrocarbon is the product of conversion of organic metter deposited in the reducing environment. 油气为还原环境沉积有机质的转化产物，坳陷具有良好的成烃潜力。
The finding of long chain alkyl benzene proves the relatively strong reducing environments during deposition at that time. 长链烷基苯的检出进一步验证了当时沉积物处于较强还原环境。
