Abstract
Oil-source correlation is the key to trace hydrocarbon accumulation process and predict reservoir position. Under the complicated accumulation conditions, multiplicity of traditional organic geochemistry index takes great difficulty to detail oil-source correlation. Therefore, the purpose of this study is to try a new way to investigate hydrocarbon accumulation. Fingerprint of trace elements was was used to oil-source correlation in this paper. Its applicability was discussed in Tazhong Area in Tarim Basin, which was the typical complex superimposed basin in west China. The result indicated that crude oil from the Ordovician in Tazhong Area was characterized by mixed sources. The contributions of individual sources differed from formation to formation and from block to block. The study result is consistent with that of traditional organic geochemistry analysis. Application of trace elements as indicators is an effective method to oil-source correlation under the complicated conditions.
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