移动式全直径岩心核磁共振测量仪在俄罗斯超稠油地层评价中的应用  

Application of Complex Nuclear Magnetic Resonance Measurements to Super-vicious Oil Deposits in Russian Republic of Tatarstan

作　　者：吉尔吉佐夫 侯学理 穆尔扎卡耶夫 

机构地区：[1]TNG-Group公司,俄罗斯鞑靼斯坦共和围布古利马423236 [2]中国石油集团测井有限公司,陕西西安710077

出　　处：《测井技术》2017年第5期506-511,共6页Well Logging Technology

摘　　要：基于核磁共振综合方法对俄罗斯鞑靼斯坦共和国超稠油储层划分和评价进行了系统研究。利用移动式全直径岩心核磁共振测量仪在井场对全直径岩心进行了实时核磁共振分析,通过实验室核磁共振标准岩样及沥青样本分析,以及其他其他测井方法的测量结果验证了实验结果的可靠性。简要介绍了3种俄罗斯井下核磁共振测井仪,实例展示了俄罗斯鞑靼斯坦共和国地区含沥青储层、喀山组泥岩层和剩余沥青储层的横向弛豫时间T2谱特征,其测量结果与全直径岩心核磁共振测量结果具有较好的一致性。介绍了移动式全直径岩心核磁共振测量仪一维、二维核磁共振(T1,T2)谱对稠油的识别能力,提出对于不同黏度的含沥青地层需借助地面核磁共振测量结果对T2截止值进行合适的选取。展示了1m长全直径岩心流体含量随时间变化的情况,说明移动式全直径岩心核磁测量仪在现场具有良好的应用前景。This paper mainly studies the division and evaluation of super heavy oil reservoirs in the Russian Republic of Tatarstan based on the comprehensive method of nuclear magnetic resonance（NMR）, and realizes the real-time NMR analysis of full diameter cores in the well site by using the ground-moving nuclear magnetic core analyzer. The reliability of the experimental results was verified by laboratory NMR standard rock samples and asphalt sample analysis, as well as other logging methods. Three kinds of Russian nuclear magnetic resonance logging tools are introduced, and a natural asphalt well is used as an example to show the T2 spectrum characteristics of the asphalt reservoir, the Kazan Formation mudstone and the remaining asphalt reservoir in the Russian Republic of Tatarstan. At the same time, the paper introduces the ability of two-dimensional nuclear magnetic resonance（T1, T2）spectrum to identify the heavy oil by the moving full-diameter core nuclear magnetic resonance measuring instrument, and proposed that the asphalt stratum with different viscosity needs to select suitable T2 cut-off value. Finally, the experimental results of fluid content in 1 m long full diameter core with time are presented, which reflects the process of loss of fluid from the core pore space. Therefore, the mobile full diameter core nuclear magnetic measuring instrument has a good application prospect in the field.

关 键 词：核磁共振测量 全直径岩心 核磁共振测井 弛豫时间谱 天然沥青 超稠油 俄罗斯鞑靼斯坦共和国 

分 类 号：P631.84[天文地球—地质矿产勘探]