【摘要】 提出一种改进的应用双等待时间 (Tw)核磁共振测井准确计算纵向弛豫时间 (T1 )的方法 ,对其可行性及应用效果进行了分析评价 ,并将其用于油气层识别。认为用我国现有核磁共振测井仪器可以比较准确地由双 Tw测井计算出 T1 ,有助于排除油气层识别的多解性 ,提高解释符合率。同时 ,T1 的准确求取 ,为利用 T1 这一重要参数提供了条件 ,进一步扩展了核磁共振测井的应用。更多还原

【Abstract】 This paper introduces a new method calculating the longitudinal relaxation time ( T 1) with dual wait time nuclear magnetic resonance logging.It is tested with synthetic data and field data.And then the calculated T 1 is used to identify hydrocarbon zones.It is concluded that T 1 can be obtained accurately from dual wait time NMR logging with the tools available in China and could be used to improve the efficiency of hydrocarbon identification.Meanwhile,this method makes it possible to make use of T 1 in petrophysical study,which extends the application of NMR logging.更多还原