The Jurassi reservoir in Wu-Xia area is dominated by lithic sandstone and feldspathic litharenite under alluvial fan, fan delta and braided river sedimentary environments.

• 摘要乌夏地区侏罗系储集层主要是冲积尾、扇三角洲及辫状河沉积环境下形成的岩屑砂岩及长石岩屑砂岩。