中国西部某盆地圈闭地质条件评价方法与模型

结合中国西部某盆地的实际情况，以文献调查和专家咨询结果为依据，建立了圈闭地质条件评价标准；对圈闭地质条件评价方法进行了研究，建立了融地质风险概率法，加权平均法，综合指数法，功效评分法，兼容度极大化法，兼容度、差异度极大极小化法干一体的圈闭地质条件评价方案及其优化模型。该模型可以电子计算机为工具对构造圈闭进行综合定量评价，从而降低勘探风险，提高油气勘探决策的科学性和可靠性。

Evaluation Methods and Model of Trap Geological Elements of Some Basin in West China

This paper builds a trap evaluation criterion for some basin in West China based both on the actual situation and expert investigation.Then,it gives two improvement methods,optimazation model of compatibility degree maximization & difference degree minimal,designed to evaluate potential of petroleum propecting based on compatibility and difference degrees.At the same time,it sets up an improvement system based both on four traditional methods(including methods of Probability of Geological Success,Weighted Average,Comprehensive Index and Effectiveness Rating) and on the two new ones.The compatibility and difference degrees of all six trap evaluation schemes in this basin in West China show that the trap evaluation schemes by optimazation model of compatibility maximization and optimazation model of compatibility maximization & difference degree minimal are the best trap evaluation methods,followed by the method of probability of geological success,and the method of effectiveness rating.This system is successfully applied in this basin in West China.