井下超声波成像提取岩层节理产状信息  

Getting Information of Attitude of Rock Joints with Ultrasonic Borehole Televiewer

作　　者：王树理[1] 李会荀[2] 杨晓军 

机构地区：[1]中国地质大学工程技术学院,北京100083 [2]莱州市国土资源局,山东莱州261400 [3]中国石油四维勘察有限工程公司,河北廊坊065000

出　　处：《现代地质》2008年第5期884-888,共5页Geoscience

摘　　要：井下超声波电视能够提取工程勘察中岩层产状信息并完成井眼岩层3维(3D)信息图。在某地下石油储备库的工程勘察中,完成7口井的超声波电视成像测井,以其中的钻孔ZK10为例,研究并分析了井下超声波电视成像所获取的结构面倾角和倾向、岩体完整性、结构面线密度、3D岩心图和井壁图以及节理极坐标图、节理方位频率图。统计分析结果表明:井下超声波电视技术可以对钻孔所揭露的岩体质量进行初级定量化分析,为区域稳定分析、工程岩体质量分级及工程设计提供有价值的基础数据,对提高工程勘察质量具有重要意义。Information and 3D images for attitudes of layers have been got with ultrasonic borehole televiewer （BHTV） in geotechnical investigation. Borehole information of rock mass fractures in seven drillholes was derived by BHTV in a underground oil storage cavern. It includes scatter plots of poles and rose maps of dip direction for structure plane with depth, dip direction, strike direction, integrality and line intensity of jointing, 3D core images, 3D borehole wall images, joint pole maps and rose maps of jointing. The statistical characteristics of these maps and images are analyzed, the results reveal that BHTV is a valuable tool for geotechnical investigation.

关 键 词：井眼 井下超声波成像 岩层产状 

分 类 号：P631.5[天文地球—地质矿产勘探]