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利用高分辨率成像测井技术识别沉积构造
引用本文:钟广法,马在田.利用高分辨率成像测井技术识别沉积构造[J].同济大学学报(自然科学版),2001,29(5):576-580.
作者姓名:钟广法  马在田
作者单位:同济大学海洋地质教育部重点实验室,上海200092
摘    要:以塔里木盆地实际资料为背景,探讨层面、层理和准同生变形等沉积构造在地层微电阻率成像测井图像上的特征及识别方法,图像灰度、形态变化是沉积构造识别的主要依据,层面表现为形态各异的线形灰度突变界面,层理通过层内灰度微细变化显示出来,纹层性破坏或纹层面扭曲等特征批示准同生变形构造的存在,根据图像解释的交错层理产状可以推断古水流方向。

关 键 词:微电阻率成像测井技术  层面  层理  准同生变形构造  古水流方向  塔里木盆地  沉积构造
文章编号:0253-374(2001)05-0576-05
修稿时间:2000年4月5日

Sedimentary Structures Identified from High-resolution Borehole Micro-resistivity Image Logs
ZHONG Guang fa,MA Zai tian.Sedimentary Structures Identified from High-resolution Borehole Micro-resistivity Image Logs[J].Journal of Tongji University(Natural Science),2001,29(5):576-580.
Authors:ZHONG Guang fa  MA Zai tian
Abstract:High resolution micro resistivity image logs were used to study subsurface sedimentary structures in Tarim Basin,northwest China.Different sedimentary structures are recognizable by responses of grayscale(or colors)and features on images.Linear features showed by abrupt changes in image grayscale usually correspond to various bedding surfaces including regular(planar)bedding surfaces or irregular scours and uncomformitities.Different kinds of bedding,including horizontal and parallel beddings,planar,trough and wavy cross beddings,graded beddings,and massive bedidings,can be discerned on images by fine changes of image grayscale within a stratum and dip azimuth between lamina surfaces picked up on images.Penecontemporanous deformation structures such as load structures,sand balls or pillows,deformed beddings are easily recognized by similar characteristics on images with those on outcrops or cores.Paleocurrent direction can be deduced by dip azimuth distribution of cross laminae interpreted on images.
Keywords:borehole micro  resistivity image logging  bed surfaces  stratification  penecontemporanous deformation structures  paleocurrent direction  Tarim Basin
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