油气地表化探中基于R型因子分析的综合指标及工区N级划分

作者对油气化探单指标基础上的综合指标以及工区异常划分问题进行了研究和探讨，认为综合指标不仅本身具有综合反师异常的能力，同时也是单指标解释的参照系，而多级划分则能提高给探信息的利用程度。基于Ｒ型因子分析，作者在文中提出了定量确定单指标权系数的加权平均意义下的综合指标和因子得分意义下的综合指标，并且指出了在特定条件下的这二种指标的归一性。在所形成的综合指标基础上，作者又归纳了一咱对研究地区进行多级划分

COMBINED INDEX AND GRADE-N DIVISION OF WORKING AREA BASED ON TYPE-R FACTOR ANALYSIS IN SURFACE GEOCHEMICAL PROSPECTING OF OIL AND GAS

The authers make an approach to concrete analysis yor combined index and abnormality division based on single index in surface geochemical prospecting in oilfield. We realize that combined index not only reflects abnormality comprehensively but also acts as reference system of single index, and higher utilization of information in surface geochemical prospecting would be incarnated through Grade N Division. Two rational combined indices are put forward with a weighted coefficient of single index under both weighted average and factor score graded by type R factor analysis, and these combined indices have the same meaning. Grade N Division in working area is concluded on the basis of formed combined index, and critical zone alignment is determined according to both combined index feature and single index feature. The result of geochemical prospecting field data in Liaohe Oilfield shows that this method is feasible.