But the quality of reservoirs is improved in areas of producing generous organic acid and nearby surface of unconformity and fracture zone.

• 盆地北缘侏罗系储集层总体为低孔低渗储集层，但在局部地区有机酸大量产生的溶解带、裂缝发育带及不整合面附近，储集层质量会有较好的改善。