adjustable pusher train

Member 4 of Quantou Formation -Yaojia Formation

1+X formation

“One step process” formation

1 st member of Shahejie Formation

1-2 member of Xujiahe Formation

1st member of Nenjiang Formation

Ⅰ oil formation in Xing’anling Group

2(superscript nd) member of Shanxi Formation

2~nd member of Xujiahe formation

2223 phase formation

2-D seabed formation

2nd member of Shanxi Formation

2nd member of Xujiahe Formation

3(superscript rd) Member of Shahejie Formation

3-D In formation

3rd member of Quantou Formation

3rd member of Shahejie Formation

3rd member of the Lingshui formation

3rd Section of Badong Formation