Abstract: Faulted zone as a very important type of structure occurred in petroliferous basin takes a significant part of controlling migra-tion, accumulation and reservoir of hydrocarbons. But few proofs were previously available in such studies. This paper reveals the geo-his-toric traces that a great amount of oil-gas flow exists in faulted zone, based on researched results in fluid property, composition, mode, stage and scale of reservoirs of both sides of Hongche faulted zone in northwestern margin of Junggar basin. It is recognized from analysis of optical property and composition of organic inclusion enclaves as well as uniform distribution characteristic of reservoir temperature that the faulting is not only as a major channel for oil-gas migration, but also controls migrating direction of oil- gas bearing fluid in this basin.

Key words: Junggar basin, faulting, hydrocarbon migration, fluid, inclusion enclave, fluorescence analysis, laser, Raman spectroscopy