核磁共振录井技术在油田勘探中的应用

Application of the NMR Mud Logging in Oilfield Exploration

核磁共振录井技术主要是应用CPMG脉冲序列测量岩样内氢核的横向弛豫时间T2的大小及其分布,在钻井过程中及时准确地获取储层物性参数的一项技术。该项技术的特点是岩屑样品分析独具特色,不受样品类型限制,分析快速,一次分析可提供多项参数,分析结果准确。在辽河油田勘探领域进行一年多的应用,在储层快速评价、油气水层综合解释等方面发挥了重要作用,对油田勘探工作具有一定的指导意义。

Nuclear Magnetic Resonance mud logging(NMR mud logging) is a technique that mainly applies the CPMG pulse sequence to measure transverse relaxation time(T2) , its size and distribution in hydrogen pit that exists in rock samples, acquire reservoir's physical parameters timely and accurately while drilling. The feature of NMR mud logging is that the cutting analysis has its own particular characteristic, andi s free from the limitation of sample types,m oreover, the analysis speed is quick, and an analysis can not only provide many parameters but gain precise analysis results. NMR mud logging has been used for more than one year in Liaohe exploration area, playing an important role in assessing reservoir and interpreting oil, gas and water layers, having certain significance for exploration in oilfield.