声波全波列测井在煤田勘探中的应用  

APPLICATION OF FULL WAVEFORM LOGGING TO COAL EXPLORATION

作　　者：王伟平 祖庆夕 李恩铎 朱正亚[2] 程宁亚 

机构地区：[1]中国煤田地球物理勘探公司 [2]南京大学声学研究所

出　　处：《煤炭学报》1992年第1期72-85,共14页Journal of China Coal Society

摘　　要：本文介绍了声波全波列数字测井信息计算机自动识取纵、横波的三种方法,即子波逼近法、能量相位跳变法和相似性法。讨论了野外钻孔的数字测井信息和声波模型井的计算结果,并与室内岩芯静态测试的数据进行了验证和比较。利用自动识取的纵、横波和密度参数,可以计算和提供大范围原生状态下的岩石强度数据(包括计算准抗压强度),这些岩石强度数据是其它方法难以得到而又为地质工程所迫切需要的参数。Three methods,namely,wavelet-approaching,energy phase-skipping and semblance, are introduced in this paper for auto-detecting P-wave (compressional) and S-wave (shear) from digital data of full waveform logging by computer. The calculation results of digital logging data in coalfield boreholes and a sonic model well are discussed,tested and compared with lab data of core static measurement. The P-wave,S-wave,auto-detected from full waveform logging,and density can be used to calculate the rock mechanical parameters (including quasi-compressive strength) in virgin state over a large area. These rock mechanical parameters play an important part in geological engineering,but hard to get by other methods.

关 键 词：声波测井 煤田地质 

分 类 号：P631.814[天文地球—地质矿产勘探]