MRT核磁共振测井仪可靠性及应用效果分析

Analyzing Reliability and Application Effects of MRT NMR Logging Tool

MRT多频核磁共振测井仪在投入市场应用前对其性能进行了大量的测试验证。在不同孔隙度大小的砂泥岩地层中对该仪器的重复曲线进行分析以确定其稳定性,通过在同一地层下与P型核磁共振测井仪对比掌握了该仪器的性能与P型核磁共振测井仪的关系。该核磁共振测井仪计算的孔隙度与岩心分析值之间的误差在行业标准允许范围之内,能够满足各类地层的评价需求。通过130多口井的实际应用显示,MRT在评价复杂油气层中提供储层参数和判断流体性质发挥着重要作用。

MRT is a multi-frequency NMR logging tool developed by China Petroleum Logging CO.LTD.A large number of experiments have been done to verify its performances before putting it into market.The stable performances of the tool are determined by analyzing repeat curves of sand-shale formations with different porosities.The relationship of performance between this tool and MRIL-P is obtained by contrasting curves in the same formation.The errors between the porosity calculated by MRT and the porosity analyzed by core are within the allowable range of the industry standard,which meets the needs to evaluate formations of various types.By the actual applications in more 130 wells show that MRT plays an important role in providing reservoir parameters and identifying fluid properties in complex oil and gas reservoirs.