微地震测井记录子波提取方法及应用  

Wavelet extraction from microseismogram logs and wavelet application

作　　者：张栋[1] 徐雷良[2] 贾静敏[2] 姜子强[2] 任宏沁[2] 

机构地区：[1]毕节学院,贵州毕节551700 [2]胜利石油管理局地球物理勘探开发公司,山东东营257000

出　　处：《石油地球物理勘探》2012年第4期519-523,682+511,共5页Oil Geophysical Prospecting

摘　　要：本文提出的微地震测井记录子波提取法,综合考虑了直流分量和截断效应的影响,比常规的最小二乘法能够获取更为精确的子波。据此提取的近地表子波形态可以更好地反映近地表地层的激发岩性,就是说,通过微地震测井资料提取的子波可实现对近地表激发条件的监控和选择。此法在胜利油田东部探区的实际应用中取得了较好的效果。On consideration of direct-current component and wavelet cutting-off effects,we propose in this paper a wavelet extraction approach from microseismogram logs.It can obtain more accurate wavelet than the conventional least squares method.Near-surface wavelet picking by this method can reflect shooting effects of near-surface strata.With this method near-surface excitation conditions can be monitored and selected.Applications in eastern Shengli Oilfield show effectiveness of the method.

关 键 词：微地震测井 子波 子波提取 激发频率 

分 类 号：P631[天文地球—地质矿产勘探]