YK气藏亚格列木组储层综合分类评价研究

Reservoir comprehensive classification and evaluation research of Yageliemu formation in YK gas reservoir

针对单因素评价储层结果不唯一的特点,通过选取储层特征参数,利用权重法对储层进行了综合分类评价。为了避免以往通常采用专家估值等方法确定各项评价参数的权系数所造成的人为因素影响,进而致使评价结果误差大,讨论了应用层次分析方法来确定各评价参数的权重系数。在利用非线性神经网络方法对储层参数进行精确计算的基础上,以Y15井为例对单井进行了储层综合分类评价。通过对研究区所有单井进行储层综合分类评价,然后做出各小层储层分类评价平面图。评价结果表明,亚格列木组储层发育连片性较好,主要发育Ⅱ类和Ⅰ类储层,这与研究区的试油资料和物性分析资料具有很好的一致性。

In view to the fact that reservoir analysis unique by single factor tends,according to selecting reservoir feature parameters,comprehensive classification evaluation has been made on the reservoir by using weight coefficient method.In order to avoid human factors influence of various evaluation parameters by previously adopting exert advice to determine weight coefficient,which caused big error to the evaluation result.This paper use analytic hierarchy process to determine the weight coefficient of every evaluation parameters.Use Y15 well as example to explain comprehensive classification evaluation of single well.On the basis of all single wells evaluation,a distribution chart of small reservoir classification evaluation is plotted.The evaluation result shows that the reservoir development better properties of Yageliemu formation,the main development reservoir are Ⅱ class and Ⅰ class reservoir.This has the very good consistency with the oil testing material and property analysis material of the study area.