The research of microcosmic mechanism and geologic origin of low-resistivity layers in continental reservoir of Jiyang Depression showed that microcosmic factors for reducing apparent resistivity of oil layer included mainly high-salinity formation water of reservoir,additive conductivity of shale in reservoir and development of fine pores of reservoir.

There are huge oil and gas resources in terrestrial low-permeability reservoir in China.

The transgressive systems tract of the continental sequences in the Biyang fault depression:oil and gas geological significance;

Mechanism of allowable space change and its diagram in continental sequence, upper member of He-3, Paleogene, Biyang depression.;

The sedimentary base\|level cycle changes could control the formation and evolution of continental sequence stratigraphy, and act as reference framework for the prediction of reservoirs.

Lithologic geochemical cyclicity in terrigenous sequence of the upper member of Eh3 in Shuanghe Zhaoao, Biyang fault depression;

The oil distribution rule of oil and gas in the Tertiary basin of Chaidamu was studied by using the model of the terrigenous sequence.

A complete terrigenous sequence in faultdepreesed lacustrine basin can be divi ded into four system tract: Lowstand System Tract (LST), Trangressive System Tra ct (TST), Highstand System Tract (HST) and Regressive System Tract (RST), which has typical geometrical configuration and respectively consists of lowstandagg radation regression, highstandaggradation and progradation.