Progress and Issues of Subtle Clastic Reservoir Exploration in China

The progress of new theories and technologies for onshore and offshore subtle clastic reservoir exploration in China is introduced,the theories include the continuous innovation of sequence stratigraphy,slope break theory,complicated pathways,sedimentary facies and fluid potential controlling on reservoir forming,three genetic factors controlling reservoir forming in China,these theories promote the subtle reservoir exploration from individual identification to qualitative and quantitative prediction,accelerate the subtle reservoir exploration in different tectonic places,different layer systems and different domains,the technologies include the high precision sequence stratigraphy,high resolution processing technology,inversion technology,visualization technology,AVO technology and frequency division technology.Nevertheless,there exist many problems,including lacking use of subtle reservoir exploration theory systematically or being difficult to evaluate the reservoir forming as a result of insufficient subtle reservoir forming mechanism,in addition,the ambiguity of the geophysic prediction can also result in wrong conclusion.Therefore,it is supposed high resolution seismic data and advanced prestack processing and inversion technology will be used to make clear of subtle reservoir forming mechanism and its main controlling factors.