The main hydrocarbon source rocks in the Muglad basin are developed in the Lower Cretaceous lacustrine rocks of the Abu Gabra (AG) formation. The AG formation can be roughly subdivided into the lower, middle and upper parts.

• 主要烃源岩发育在下白垩统 AG组 ,该组上部以砂岩为主 ,生烃潜力差 ,下部主要是干旱气候期的沉积 ,生烃潜力亦差 ;