测井曲线预处理技术在时深标定中的应用  

Application of Pretreatment Technology of Logging Curves in Time-depth Delimitation

作　　者：苗凡胜[1] 

机构地区：[1]中石油大庆油田有限责任公司第一采油厂地质大队,黑龙江大庆163001

出　　处：《长江大学学报（自科版）（上旬）》2014年第5期57-60,5,共4页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

摘　　要：开发地震和勘探地震的目的不同,分层原理不同,分层标准不同,要提高开发地震的解释精度必须做好井时深标定。分析了声波曲线和密度曲线对时深标定的影响,利用测井曲线预处理技术对测井曲线进行了曲线编辑和曲线重构处理,以减小或消除失真现象对时深标定的影响。研究表明,利用测井曲线平滑滤波有效消除毛刺状异常值,同时很好的保留代表地层性质的有用信号;利用测井曲线削峰处理既可以有效消除由井壁扩径引起的尖峰状异常值,又可以根据测井数据的统计结果确定异常段的合理值,减小井壁扩径对测井曲线的影响;在没有目标测井曲线或目标测井曲线严重失真的情况下,借用该井的其他测井曲线或相邻井的目标测井曲线,分析目标测井曲线与其他测井曲线之间的数理统计关系或神经网络拟合关系,可以拟合出能够反映该井特点的目标测井曲线。The object of developing seism and exploration seism is different,principle and standard of layer-separating are different.In order to improve interpretation precision of seism,time-depth delimitation of wells is perfected.As long as some factors affecting sonic curves and density curves are analyzed carefully,meanwhile pretreatment technology of logging curves is used for curves-editing and curve-restructure processing on logging curves,so as to decrease or remove the impact of distortion on time-depth delimitation.Utilizing the smooth wave of logging curves is to effectively eliminate burring abnormal values,at the same time preserving useful signals that can represent layer character,and utilizing peak value-cutting of logging curves technology can effectively eliminate sharply abnormal values.On the basis of statistic results of logging data,reasonable values of abnormal sectors of wells are obtained.When objective logging curves are not available or objective logging curves distort seriously,other logging curves of this well or objective logging curves of adjacent wells are analyzed carefully,so that statistic relation or necural network relation between objective logging curves and other logging curves can be analyzed to stimulate objective logging curves which can reflecting the character of this well.

关 键 词：时深标定 声波曲线 密度曲线 编辑 重构 合成记录 地震分层 测井分层 

分 类 号：P631.84[天文地球—地质矿产勘探]