关键词: 油气勘探, 地质评价, 资源评价, 经济评价, 综合优选, 辽河坳陷

Abstract: By using the massive statistical results from the third oil-gas resource assessment of the Petro China Limited Company,an improved model including four sub-models of geological evaluation,resources evaluation,economical evaluation and integrated optimum seeking and a set of related methods for integrative evaluation of plays were presented.The model and related methods are applicable to evaluate the plays of petroleum-geological characteristics and can enrich the series of quantitative evaluation techniques for oil-gas exploration in China. Besides,the case study on Liaohe Depression was carried out with this model.Of nineteen plays,seven plays were predicted to be favorable geological settings,four plays unproven oil in place have the reverses over 0.1 billion tons and five plays have potential high income.The nineteen plays were partitioned into three classes by the integrated optimum seeking sub-model.These results can provide valuable references for the exploration prospects of Liaohe Depression in resent years.

Key words: oil-gas exploration, geological evaluation, resource evaluation, economical evaluation, integrated optimum seeking, Liaohe Depression