摘要
In this paper, multi-objective geochemical data in the oil field of the Yanchi area in Ningxia are analyzed. It is found that the contents of some elements in soil are abnormal, and these anomalies in the upper soil are closely related with the presence of the oil and gas field. The analysis of average contents of some elements and their relation to the oil and gas field reveals that the elements of Cu, Fe, Mn, V, Cl and S are effective geochemical indices directing to oil field. This would help expand the application range of multi-objective geochemical data. It can be applied to both ecological environment evaluation and prospect assessment of oil and gas resources.