Banghu syncline in the Qianjiang sag is a depocenter of Paleogene Qianjiang Formation, and is the richest hydrocarbon generation center in Jianghan Basin.

• 潜江凹陷蚌湖向斜是下第三系潜江组的沉积中心,是江汉盆地油气最富集的生烃中心。