基于检验井分析的多类资料综合建模

针对传统的砂体建模方法资料利用不充分、没有考虑井网密度的变化对资料可信度的影响、建立的模型需要进一步检验和修正等缺点,提出了一种综合多类资料整合进行砂体建模的新方法.考虑到井点信息数学模拟、沉积微相分布、地震反演砂体预测成果与井位置之间的关系,从信息可信度随井距有规律变化入手,建立了不同方位各类资料预测准确率与井距的关系曲线,在此基础上得到了不同类型信息在空间的权重场分布.通过权重场对各类信息整合得到了最终的砂体模型.将该方法应用在吉林扶余油田井网密度变化大的地区,取得了较好效果.

Comprehensive modeling with various kinds of data based on inspection well analysis

The conventional sand body modeling method has some disadvantages, such as the insufficient application of data, neglecting effect of well spacing density on credibility of data and requirement of further correction. This paper presents a new method integrating various kinds of data. With the consideration of well site information math simulation, sedimentary microfacies distribution and the relation between seismic inversion sand body prediction and wells location, the relationship curve for prediction accuracy of various kinds of data from different orientation and well spacing is established based on the regular change of information confidence level with well spacing. On the basis of these curves, the weight field distribution of various kinds of data is calculated. According to the weight filed various kinds of data are integrated and final sand body model is built up. This method is applied to area with great change in well pattern density in Jilin Fuyu oilfield, and the results are successful.