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Brief Introduction of Key Techniques in NMR Logging While Drilling Tool
Author(s): 
Pages: 107-111
Year: Issue:  2
Journal: WELL LOGGING TECHNOLOGY

Keyword:  随钻核磁共振测井测井数据弛豫信号;
Abstract: 针对随钻核磁共振测井的核心问题即安装在钻具上的仪器的过度震动或侧向运动所导致的核磁测量共振区和极化区的不一致以及内部磁场变化的问题,以哈里伯顿公司的MRIL-WD和斯伦贝谢公司的proVISION随钻核磁共振测井仪为例,介绍了随钻核磁共振测井中所采用的关键技术.MRIL-WD采用对运动不敏感的T1测量技术,而proVISION则采用了改进的T2 CPMG采集技术和实时测量钻杆运动的关键技术.
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