粘滞剩磁(VRM)岩芯定向的应用  

THE APPLICATION OF VISCOUS REMANENT MAGNETIZATION IN ORIENTATION DETERMINATION BY USING DRILL CORES

作　　者：侯守信[1] 田国荣[1] 

机构地区：[1]石油勘探开发科学研究院廊坊分院,廊坊065007

出　　处：《岩石力学与工程学报》2000年第z1期1128-1131,共4页Chinese Journal of Rock Mechanics and Engineering

摘　　要：介绍了粘滞剩磁 (VRM)岩芯定向的原理和优点。利用岩芯存在的粘滞剩磁 (VRM) ,经逐步退磁 ,分离出当代岩芯磁向量 ,即可转到地理北极方向。它不同于一般古地磁定向方法 ,不考虑地质年代和地壳运动 ,都可进行定向。以华北二连油田为例 ,具体描述了粘滞剩磁岩芯定向的试验过程与分析方法。It is necessary to orientate the drilled cores in reservoir research. The viscous remanent magnetization orientation technique is presented in which a present day component of magnetization is isolated during the progressive demagnetization of core material. This component is essentially a magnetic compass bearing for the core which can be used to rotate the core reference frame into the geographical system. Unlike the standard palaeomagnetic method, it can be used in complex tectonic areas where the precise structure is not known and on samples for which the age is not known. Taking Erlian oil field as an example, the testing procedure and analysis method are described in detail of the viscous remanent magnetization orientation.

关 键 词：粘滞剩磁 岩芯定向 古地磁方法 石油工程 

分 类 号：TE243[石油与天然气工程—油气井工程]