测井曲线在谢桥井田B组煤层对比中的应用

Application of Logging Traces in Coal-seam Correlation of Xieqiao Minefield B Coal Seam

通过对谢桥井田视电阻率和自然伽马测井曲线的形态及组合特征的分析研究,在区内划分出3个岩层物性标志层、5个煤层物性标志层和2个辅助煤岩物性标志层,并以此作为确定和划分大层段及确定该组主要可采煤层层位的依据。此外,通过对谢桥矿二水平补勘的4个钻孔B组煤层的层位进行对比发现,该区6煤层与全区标准剖面一致,可作为曲线对比的标准。实践表明,在该井田利用测井曲线异常形态及组合特征,可有效进行煤岩层变化规律研究、标志层确定及层位划分判定,极大地提高了工作效率。

Through apparent resistivity and gamma-ray logging traces configuration and combined features analyses in Xieqiao mine field,three rock stratum geophysical property marker horizons,five coal seam geophysical property marker beds and two auxiliary coal and rock stratum marker formation were identified as a reason to conform and distinguish stratum,and ensure the strata position of the mine minable seam in the form.Moreover,based on the strata position of coal-group B correlation in the Xieqiao Coal Mine Ⅱ Level additional four drillings discovered that No.6 coal seam in the minefield is the same as the whole minefield type section,this can be considered as logging traces comparison criteria.Practice shows that,the usage of anomalous configuration and combined features of logging traces in the minefield can effectively carry out coal seam and strata variation regularity study,confirm marker bed,determine horizon,and enhance the work efficiency immensely.