圈闭的灰色关联分析方法研究

GRAY CORRRELATIVE ANALYSIS OF TRAPS

在现实的油气勘探过程中,圈闭评价都是多样本的,能获取的资料有限,再加上各种地质条件的复杂性,造成圈闭的地质评价成为不确定的评价模型。在深入分析圈闭含油气性特征的基础上,采用灰色关联分析法给出了构造圈闭含油气性的综合评价方法,不仅可以综合评价圈闭的含油气性,而且还可以通过关联度给出评价结果的可靠程度。通过介绍灰色关联分析法在圈闭评价中的基本思想及评价方法,并应用实例,有效解决了勘探程度较低地区的圈闭优选问题,缩短了勘探周期,取得了较好的解释评价效果。实践证明,这种方法所需数据量小,运算较为简便,是油气勘探构造圈闭评价方法应用技术的新突破。

In the practical operation of oil and gas exploration, the trap assessment is multi-sample,only limited data are obtained, plus the complexibility of the geological conditions, all these make the geological assessment of traps uncertain assessment model. On the basis of analyzing the characteristics of trap oil-bearing, gray correlativ analysis is applied to work out the integrated assessment of structural trap oil-bearing property, which can be used to integrativly assess oil-bearing property of the trap, but the reiability of the assessment result can be given by degree of correlation. The basic idea, assessment method and practical application of gray correlative analysis method in trap assessment effectively solve the problem of trap optimization in the less explorative areas, shorten the cycle of exploration, and better effectiveness of interpretation and assessment is gained. Practice proves that the method requires small mount of data and simple calculation, it is a new break through of the application of structural trap assessment method.