主成分分析法在油气开发方案技术经济评价中的应用

对油气产能建设性项目进行经济评价时,往往涉及到多个经济评价指标。为了突出反映项目可行性的重要指标,需要在损失一些次要信息的情况下,减少变量的个数,降到低维空间进行方案决策。在以主成分分析法讨论四川新场气田经济评价方案选择中的应用时,通过对样本的一些变换,确定样本的主成分及意义,求取综合主成分因子确定各个方案的综合经济评价指标,进一步选择最佳的实施方案。对方案Ⅵ和方案Ⅶ进行了敏感性分析,从另一个角度验证了方案Ⅵ和方案Ⅶ抗风险能力较强,证明采用主成分分析法选择方案的正确性。

Application of Basis Analysis to Project of Economic Evaluation in Oil and Gas Fields

The evaluation of a construction project of oil and gas often involves various indices. For the sake of highlighting the important indices that can reflect the economic effect of the project,a number of the variables must be reduced in the circumstances of the loss of secondary information.So the basis analysis is just the way adopted in the economic evaluation of Xinchang gas field,Sichuan,and this paper explains how to ascertain the numbers of the basis through transforming the sample, and accounts for the true meaning of every basis. To analyze every project's general economic effect and find out the best one, the way of the factor analysis by synthetic basis is adopted. And the sensitivity analysis of two projects is made for further proving the two projects the better effect against the venture, thus testifying to the availability of basis analysis for the project selection.