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EMRT是由中海油田服务股份有限公司研制的一种核磁共振成像测井仪,目前已在渤海、南海、山西、伊拉克和印尼等油田推广使用.核磁共振测井过程的质量控制是准确获取测井资料的重要前提,为整个作业过程核心工作之一.核磁共振测井探测深度较浅,资料采集质量受多方面因素如井眼形状、泥浆侵入以及岩性等的影响,因此测井过程要实时监测质量控制参数的变化,还要结合常规测井资料综合分析,以确保资料采集的准确性.本文根据核磁共振质量控制的一般原则,重点探讨EMRT核磁共振测井仪的质量控制影响因素,阐明质量控制参数的含义及控制范围,提出核磁测井参数设计的一般要求,并结合测井实例分析质量控制的应用.
EMRT, a nuclear magnetic resonance imaging tool developed by China Oilfield Services Ltd., is currently being used in oilfields in Bohai, South China Sea, Shanxi, Iraq and Indonesia etc. The quality control of NMR logging is to accurately obtain logging The important prerequisite of data is one of the core work of the whole operation process.MR NMR shallow exploration depth, the quality of data acquisition is affected by many factors such as wellbore shape, mud invasion and lithology, so the logging process should be real-time Monitoring the changes of quality control parameters, combined with the comprehensive analysis of conventional well logging data to ensure the accuracy of data acquisition.This paper focuses on the quality control of the EMRT NMR logging instrument based on the general principles of quality control of NMR, clarifying The meaning of the quality control parameters and the control scope, the general requirements of NMR logging parameter design are put forward, and the application of quality control is analyzed in combination with logging examples.