Petroleum Geologic Characteristics and Resource Potential in Tarim Basin.

In view of studies of the strata,sedimentary facies structure,hydrocarbon source rock,source-reservoir-seal assemblage and resource status in Tarim basin,it is considered that Tarim basin is characterized by complete strata of marine and terrestrial facies,with complicated structures constructions due to craton basin superimposed with fore-land basin;with three sets of major hydrocarbon source beds and developed reservoirs and cap rocks,forming complete sets of source-reservoir-seal assemblages;with various types of local structures and traps;paticularly with characteristics of multistage hydrocarbon generation,multistage forma tion reservoir and late-stage preservation generation.There are five kinds of conditions for controlling hydrocarbon in it.In addition,the status of hydrocarbon resources is analyzed or estimated in detail.It is predicted that25×10 8 ～35×10 8 t(OOIP)could be found in Tarim basin.This paper offers four ex-ploratary domains and eight major prospecting blocks,including recent strategic plan for exploration.Such provides sound basis for the basin's further exploration and development.