新疆石油地质

新疆石油地质 ›› 2008, Vol. 29 ›› Issue (2): 260-263.

• 讨论与争鸣 • 上一篇    下一篇

利用核磁共振测井资料评价储集层孔隙结构的讨论

肖亮   

  1. 西安石油大学油气资源学院, 西安710065
  • 收稿日期:2007-08-27 发布日期:2020-08-17
  • 作者简介:肖亮(1981-), 男, 湖北浠水人, 硕士, 地球物理测井,(Tel)029-88382797(E-mail)liangxhb@yahoo.com.cn.

Application of NMR Log Data to Formation Pore Structure Evaluation

XIAO Liang   

  1. Faculty of Petroleum Resources, Xi'an Petroleum University, Xi'an, Shaanxi 710065, China
  • Received:2007-08-27 Published:2020-08-17

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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。

关键词: 核磁共振, 测井, 孔隙结构, 评价

Abstract: 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.

Key words: NMR, well log, pore structure, evaluation

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