THE DISTRIBUTIVE CHARACTERS OF TRACE ELEMENT IN OILFIELD WATER OF BIYANG DEPRESSION AND ITS RELATIONSHIP TO OIL AND GAS

Through the systematic analyses of 194 water samples from the oil fields in Biyang Depression,the relationships of the trace elements to the depositional environments,and hydro-geochemical zonation are studied.Then,the oil and source rocks are correlated in order to trace out the direction of oil and gas migration.Thereafter,the accumulation and distribution of oil/gas are inferred that it would undoubtedly provide some helpful informations for petroleum exploration.