There exist 3 sets of caprocks of upper Triassic-lower Jurassic, mid Triassic Badong Formatin and lower Triassic Jialingjiang Formation and the direct caprock of overlapping gas reservoir.

• 摘要石柱地区上组合气藏具备上三叠统-下侏罗统、中三叠统巴东组和下三叠统嘉陵江组3套区域盖层，以及气层上覆的直接盖层；