板桥油田板二油组扇三角洲沉积与油气关系
The relationship between fan delta deposition and gas oil in Ban 2 formation of Banqiao Oilfield
CⅠ油组主要为扇三角洲平原分流河道沉积，常形成好到极好的优质储层。
C ⅰ is distributary channel factes on fan delta plains and formed very fine high quality reserviors .
油扇