核磁共振测井技术的最新若干进展

Latest Advances in NMR Logging Technology

核磁共振测井技术(NMR Logging)在最近10年左右的时间里发展非常迅速。从仪器研发和制造到在储层评价上的应用都取得了长足的进步。三大井筒服务公司一直致力于核磁共振测井技术的研发,新的仪器不断推出。本文介绍了新型电缆核磁共振仪,包括Schlumberger公司推出的MRX,MR Scanner,BakerAtlas公司推出的MREx,以及Halliburton公司新近推出的MRIL-XL。随钻核磁共振测井技术也达到了商业化作业的水平,三大服务公司都有自己的仪器和技术。井下核磁共振流体分析仪(MRILab)能在储层温度和压力条件下采集地层流体的核磁共振信息。目前的NMR测井都是基于一维核磁共振技术,新的二维核磁共振测井技术(2D NMR)是基于两个维度(T2,D)进行观测的全新的方法,这将核磁共振测井技术的应用进一步向前推进,开拓了岩石物理研究和储层评价的新领域。同时二维核磁共振测井技术的出现和成功应用也为人们指明了三维核磁共振测井(3D NMR)技术的方向。文中最后对核磁共振测井技术热点问题进行了总结性地回顾并对未来的发展方向进行了展望。

NMR logging technology has been greatly developed in the last 10 years.It has made dramatic progress in tool development ＆ manufacturing and formation evaluation applications.＂Three Biggest＂ wellbore services companies have been engaged in R＆D of NMR logging technology.This paper illustrated the most advanced NMR logging tools developed and manufactured by them,which included MRX,MR Scanner of Schlumberger,MREx of Baker Hughes,MRIL-XL of Halliburton.NMR-LWD technology is now commercially applied in petroleum industry.MRILab can acquire NMR information of fluids under the condition of formation temperature and pressure.The 2D NMR logging technology is totally new,based on 2D NMR measurement of（T2,D） which has explored a new area of petrophysical study and formation evaluation.This new technology also indicated the NMR trend that 3D NMR logging technology will be finally developed and put into application.NMR logging technology was reviewed and the trend of development was analyzed in the end of this paper.