摘要
从核磁共振测井的理论基础出发,介绍了利用核磁共振测井技术评价储集层孔隙结构的原理,探讨了储集层含烃时对核磁共振流体横向弛豫时间分布的影响。提出,利用核磁共振资料评价储集层孔隙结构时需要注意其应用条件及适用范围。在一定条件下应对含烃储集层核磁共振的流体横向弛豫时间分布谱进行校正,使其转换为100%饱和水状态下的核磁共振流体横向弛豫时间分布谱,然后再利用"三孔隙度组分百分比"法评价储集层孔隙结构,将会得出合理的评价结果。
The principle of evaluation of formation pore structure with NMR logs is presented. The effect of hydrocarbon-bearing reservoir on distribution shape of t2 in NMR logs is discussed. It is suggested that its applied conditions and suitable scope should be paid attention to. In some conditions, such a distribution shape of t2 in NMR logs should be corrected into that in state of ,100% water saturation, followed by using the method of percentage of three-porosity composition to evaluate the formation pore structure, the results will be more reasonable.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2008年第2期260-263,共4页
Xinjiang Petroleum Geology
