Abstract: NMR logging technology can provide abundant formation information and plays an irreplaceable role in logging evaluation of complicated lithological and complex oil and gas reservoirs. MRT6910 multi-frequency NMR logging tool is China’s first centered NMR logging tool with an independent intellectual property right at the present time. This paper introduces and analyzes this tool in the areas of hardware design, observation mode design, and data acquisition and interpretation. Currently, MRT6910 multi-frequency NMR logging tool is used in a number of oilfields with good application results achieved. All the indexes have reached the same level of international similar instruments.

摘要： 核磁共振测井技术能够提供丰富的地层信息, 在复杂岩性及复杂油气藏的测井评价过程中具有不可替代 的作用。MRT6910 多频核磁共振测井仪是目前国内第一个拥有独立知识产权的居中型核磁共振测井仪器, 主要从硬件 设计、观测模式设计、数据采集和解释评价等方面对该仪器进行了介绍和分析。目前, MRT6910 多频核磁共振仪已经 在多个油田推广应用, 均取得了很好的应用效果, 各项指标均已达到国际同类仪器水平。

关键词: 多频核磁共振, 测井仪, 射频脉冲, 回波信号, 观测模式