There are still many challenges on geophysical characterization of continental shale oil sweet spot in Eastern China in terms of technique applicability.Petrophysical models for continental shale oil layers are established to analyze geophysical responses based on the study on the fundamentals of continental shale oil.It's believed that the controlling factors for shale oil accumulation are organic-rick laminated lithofacies and fractures

following the integrated investigation of geology

well logging and geophysics.Besides

based on the existing methods for seismic prediction including lithofacies

TOC

rock physical property

oil bearing properties

brittleness

pore pressure and in-situ stress

new geophysical prediction methods are built for laminated lithofacies

fracture and in-situ stress.Based on petrophysical models and anisotropy pre-stack inversion

new methods are developed to predict the density of bedding-parallel fractures in shale

which is in turn regarded as a constraint for sedimentary analysis

so as to effectively predict the distribution of the laminated lithofacies.Orthorhombic anisotropy AVAZ algorithm is given to improve the seismic characterization of fractures;while the prediction of in-situ stress is achieved based onYoung's modulus

bulk modulus

and modulus of rigidity

and the direction of in-situ stress can be computed from interval velocity variation.The study clarifies the main controlling factors for continental shale oil sweet spots

establishes an index system for sweet spots

reveals the characteristics of petrophysical and geophysical responses of sweet spots

and optimizes the geophysical characterization method for sweet spots.These methods are successfully used to identify the favorable target areas for continental shale oil exploration in Jiyang Depression.