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冀东油田钻井岩芯的磁学研究
引用本文:孟小红,周海民.冀东油田钻井岩芯的磁学研究[J].地球物理学报,1997,40(6):809-820.
作者姓名:孟小红  周海民
作者单位:1. 中国地质大学物探系, 北京 100083; 2. 冀东油田科技中心勘探室, 唐山 063200
基金项目:国家自然科学基金!青年基金
摘    要:论述了利用古地磁、磁组构综合研究进行钻井岩芯定向和确定沉积组构(沉积层面在现代地理坐标系下的)方向的方法.通过对冀东油田100块钻井岩芯实测结果的系统分析,指出该方法在岩芯磁组构方向确定和沉积剩磁成分能够分离出来的情况下,可用于地层产状未知和井孔近似直立情况下的钻井岩芯定向,并能给出沉积组构方向.对岩芯样品中的磁性矿物成分、成因进行了研究,分析了岩芯磁性特征与烃类富集的关系,指出磁参数分布特征,能为油气勘探开发、指示油气富集部位提供参考.

关 键 词:钻井岩芯  古地磁  磁组构  冀东油田  

MAGNETIC STUDY OF DRILL-CORES IN JIDONG OIL FIELD
Meng Xiao-hong.MAGNETIC STUDY OF DRILL-CORES IN JIDONG OIL FIELD[J].Chinese Journal of Geophysics,1997,40(6):809-820.
Authors:Meng Xiao-hong
Institution:1. China University of Geosciences, beijing 100083, China; 2. Explorartion Group of Scientific and Technoligical Centre, Jidong Oil Field, Tangshan 063200, China
Abstract:By means of integrated study of paleomagnetism and magnetic susceptibility, the method of drill-core orientation and sedimental fabfic determination is described. Through the systematic analsis of the measurement results of 100 drill-cores, it is showed that the method can be useful when shatigraphic strike and dip is not clear and drill slant is nearly vertical, if magnetic fabric can be measured accurately and original sedimental remanence can be separated from natural remanence. The contents and forming mechanism of magnetic minerals of drill-cores as well as the relationship between the magnetic parameters and concentration of hydrocarbons are stUdied. It is Suggested that magnetic parameters can provide important hint for oil reservoir.
Keywords:Dill-core  Paleomagnetism  Magnetic fabric  The intensity of natural remanence  Jidong Oil Field
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