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对川中某地１５０ｋｍ２范围进行了七种放射性方法的油气勘查测量，取得了１９０２个测量数据。利用Ｒ型因子分析对其中的五种方法、七项指标、１１７６个数据进行了研究。研究结果表明，因子分析能够提供圈定油气异常的组合信息，降低干扰、突出异常；为研究区今后的油气勘探指出远景区。
Oil and gas exploration surveys of seven radioactive methods were carried out over a range of 150 km2 in a certain area of central Sichuan Province and 1902 measurements were obtained. Five kinds of methods, seven indexes and 1176 data were studied by R-factor analysis. The results show that the factor analysis can provide the combined information to delineate the hydrocarbon anomalies, reduce the interference and highlight the anomalies; and point out the prospective areas for the future exploration of oil and gas in the study area.