核磁共振录井技术常规储集层流体识别方法及应用  

Conventional reservoir fluid identification method and application of NMR logging technology

作　　者：李怀军 李秀彬 马树明 经俭波 张小虎 苑传江 LI Huaijun;LI Xiubin;MA Shuming;JING Jianbo;ZHANG Xiaohu;YUAN Chuanjiang(XDEC Geological Research Institute (Karamay Mud Logging Company), Karamay, Xinjiang 834000, China)

机构地区：[1]中国石油西部钻探工程有限公司地质研究院(克拉玛依录井公司),新疆克拉玛依市834000

出　　处：《录井工程》2020年第2期72-78,共7页Mud Logging Engineering

摘　　要：核磁共振录井技术中T2谱图的差异性可以用于反映地层中流体的性质,是提高核磁共振录井技术解释符合率的一项重要手段。新疆油田准噶尔盆地勘探区域大、储集层均质性各不相同,核磁共振测量的含油饱和度差异很大,流体性质判断难度大,给录井解释评价带来巨大挑战。基于核磁共振技术中初始状态、饱和状态、浸锰状态所产生的T2谱图特征,总结出剩余油指数和流体逸散指数两个反映孔隙中剩余流体性质的参数,同时利用含油饱和度数据并加以控制,建立了新的三端元图板。经过实际应用与试油结论验证,不同流体性质的储集层在该图板中差异明显,可有效区分流体性质,提高了资料的适用程度,提升了核磁共振录井技术在准噶尔盆地评价流体性质的准确性。The difference of T2 spectral configuration in NMR logging technology can be used to reflect the properties of fluids in the formation,which is an important means to improve the interpretation coincidence rate of NMR logging technology.The large exploration area in Junggar Basin of Xinjiang Oilfield,with different reservoir homogeneity,great difference in oil saturation measured by NMR,and great difficulty in judging fluid properties,brings great challenges to mud logging interpretation and evaluation.Based on the characteristics of T2 spectral configurations produced by the initial state,saturation state and manganese immersion in the NMR technology,the remaining oil index and the fluid fugitive emission index,two parameters reflecting the properties of the remaining fluid in the pores,were summarized.At the same time,a new three-end-member chart was established by controlling oil saturation data.Through the verification of practical application and well test results,the reservoirs with different fluid properties have obvious differences in this chart,which can effectively distinguish the fluid properties,enhance the adaptability of data,and improve the accuracy of NMR logging technology in the evaluation of fluid properties in Junggar Basin.

关 键 词：核磁共振 储集层 流体识别 剩余油指数 流体逸散指数 T2谱图 T2截止值 三端元图板 

分 类 号：TE132.1[石油与天然气工程—油气勘探]