摘要
精确预测煤层厚度变化趋势对煤矿安全高效生产具有重要意义,阐述了基于约束稀疏脉冲反演技术,综合利用垂向分辨率高的测井数据和横向连续性好的地震资料进行煤层厚度预测的方法,首先利用测井资料及三维地震初步解释成果进行波阻抗反演,并通过分析测井曲线及波阻抗反演成果确定煤层所对应的波阻抗层,对煤层顶底板进行层位追踪,得到煤层的时间厚度,根据煤层纵波速度,最终计算得到全区煤层厚度变化趋势。
Accurate prediction of coal thickness variation trend has vital significance to coalmine safe and efficient production.Based on constrained sparse pulse inversion technology,the paper has expounded comprehensive use of well logging data with high vertical resolution and seismic information with good transversal continuity carried out coal thickness study.Firstly using well logging information and 3D seismic interpreted results carried out wave impedance inversion,then through logging traces analysis and wave impedance inversion results have determined coal corresponding wave impedance formation.Tracing coal roof and floor horizons worked out coal time thickness,according to coal compressional velocity,finally through computation worked out whole area coal thickness variation trend.
作者
张晨林
Zhang Chenlin(Research Institute of Coal Geophysical Exploration,CNACG,Zhuozhou,Hebei 072750)
出处
《中国煤炭地质》
2022年第9期68-72,81,共6页
Coal Geology of China
关键词
波阻抗反演
煤厚
交会分析
测井
wave impedance inversion
coal thickness
cross analysis
well logging
