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

摘要： 充分利用中国石油天然气股份公司三轮油气资源评价大量数据统计成果,提出了一个改进的区带综合评价模型与方法,其中包括地质评价、资源评价、经济评价、综合优选等4个子模型以及一套实现方法.该模型与方法适用于中国石油地质特点的区带评价,丰富了我国油气勘探的定量评价技术系列.该模型在辽河坳陷的应用实例表明,辽河坳陷的19个区带中有7个地质条件“好”的区带,4个未探明地质资源量大于1×10⁸t的区带,5个可获高收益的区带,并根据综合优选法将19个区带划分三类,为该坳陷的近期勘探目标提供了有价值的参考依据.

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