基于改进AHP-熵权法和TOPSIS的火山岩气藏开发方案优选

摘要

如何从技术和经济的角度选择火山岩气藏最优开发方案是目前急需解决的问题.根据火山岩气藏开发方案优选指标的构建原则,确定了开发方案的7个优选指标.采用改进的层次分析法(AHP),与熵权法和逼近于理想解排序法(TOPSIS)相结合,建立了基于改进的AHP-熵权法和TOPSIS的火山岩气藏开发方案优选模型,并以松辽盆地某区块火山岩气藏8个决策开发方案优选为例验证了模型的有效性.结果表明,利用所建立的优选模型计算8个决策方案距离正理想方案的接近程度分别为0.294 7,0.504 1,0.679 8,0.767 5,0.316 5,0.640 7,0.621 3和0.254 6,根据决策方案距离正理想点最小优选原则,得到最优方案为决策方案8.优选结果可为石油公司做出决策提供辅助参考,具有一定的实际和理论意义.%How to choose the optimal program for volcanic gas reservoir development economically is an urgent problem to be solved.According to the construction principle of the indexes of volcanic gas reservoir development program optimization,7 optimum indexes of development program are determined.By using the improved analytical hierarchy process (AHP) and combined with entropy weight method and the technique for order preference by similarity to ideal solution (TOPSIS),an improved AHP-entropy weight & TOPSIS-based model for volcanic gas reservoir development program optimization is established and its validity has been verified by a case study of optimization for 8 volcanic gas reservoir development programs in a block of Songliao basin.The results show that the approximation degrees of each program are 0.2947,0.5041,0.6798,0.7675,0.3165,0.6407,0.6213 and 0.2546,respectively.Based on the optimal selection principle,it is considered that the optimal solution is the progran No.8.The optimization result could provide references for decision making in oilfields,which has some practical and theoretical significance.