1 High quality reservoirs and paleo- high structures are the main controls on the regional distribution of the oil and gas fields in the sub - salt sequences underlying the Upper Jurassic evaporites.

2 It was found that there exit paleo- reservoir in Devonian stratum, Tianjingshan structure, in course of investigation of oil - sand resource in the northwest part of Sichuan Basin.

3 Stable isotopic composition of fossil ostracode is used as an ideal proxy for paleo- lake sedimentary environments.

4 Karasay structure evolved from a faulted anticline to a fault nose, resulting in serious destruction of the paleo- pools.

5 It is suggested that exploration direction of China marine sedimentary rock should be based on the paleo- uplifts and the reservoirs overlapping on effective source rocks.