Abstract:

The Tertiary in the Lunpola Basin is a sequence of clastics and clay rocksof near-shore and deep lake facies,with a total thickness of about 4000m.It can be divided into the Niubao and Dingqing formations.The study of os-tracods shows the former is of Eocene—Oligocene age,while the lowermiddle and upper members of the latter belong to the Miocene and Pliocenerespectively.There are good oil source,reservoir and cap rocks as well astheir appropriate combination in the basin.The known oil-bearing beds aremany,thin,dispersed and miscellaneous in character.The physical proper-ties indicate that the crude oil are relatively low in maturity and have beensubjected to weathering to a certain extent.Basing on the regional geological and structural conditions of the basin,the author delineates 4 areas of different oil prospects.