多维决策圈闭评价方法及其应用  

Principle and Application of Multidimensional Decision Trap Evaluation

作　　者：王丽君 严恒 

机构地区：[1]中海石油(中国)有限公司湛江分公司

出　　处：《海相油气地质》2012年第4期63-67,共5页Marine Origin Petroleum Geology

基　　金：国家重大专项"南海北部深水区储集体地球物理描述和预测"(编号:2011ZX05025-002-06)和"莺琼盆地高温高压地层岩石地球物理特征与地震属性技术研究"(编号:2011ZX05023-004-02)资助

摘　　要：多维决策就是在具有相互冲突、相互影响的多个因素下对评价目标进行的决策,把它应用到圈闭评价时,就是把影响圈闭评价的各个因素看成一个整体,这些影响因素共同反映圈闭的优劣,将多个因素系统合成为一个能从总体上度量圈闭优劣的单因子来进行评价优选。在使用多维决策对研究区进行实际的圈闭评价时,通过多维目标函数,求解各圈闭与所假设的最优和最劣圈闭之间的距离,最后得到综合评价因子序列,此时选出距最优圈闭较近而距最劣圈闭较远的圈闭可作为优先勘探的对象。对四川盆地某区进行了圈闭评价实践,并与地质风险概率法作了对比,证明多维决策圈闭评价方法是有效的。此方法具有简单、实用、易操作、分辨率高等优点,人为因素的干预比较少,预测结果更为客观。The multidimensional decision is a method of making a decision for an evaluation target under the situation of many effective factors which conflict and react with each other.When the multidimensional decision is applied to trap evaluation,all of factors that reflect the quality of traps are regarded together as a whole,or several factors are integrated to a single factor that can optimally evaluate the quality of traps by muti-object calculation.The fact that it is applied in actual trap evaluation in some areas of Sichuan Basin and it is compared with the method of geological risk probability has proved that the method is of validity and applicability with advantages of simple,practical and easy operations,high resolution,less human intervention and more objective prediction result.

关 键 词：油气勘探 圈闭评价 多维决策 影响因素 方法研究 方法应用 

分 类 号：TE112.36[石油与天然气工程—油气勘探]