摘要
马营堡井田基本构造形态为一单斜构造,区内不同岩性地层的电阻率、密度、声波时差及伽马值均有明显差异,其中煤层的电阻率、密度及声波时差曲线均表现出出高异常及自然伽马低异常;而砂岩随粒度的变细及泥质含量的增加,自然伽玛逐渐增大。依据该区岩性基本物性特征,确定了井田内新生界与基岩、下石盒子组与山西组分界及主采煤层4、9号等主要标志层的响应特征。这些地层标志在测井曲线上形态,可作为该区地层对比的重要依据。
The basic structural form in the Mayingbu minefield is a monocline.The resistivity,density,sonic differential time and gamma in different strata in the area have distinct differences.In which,coal seam resistivity,density and sonic differential time are all indicative of high anomaly and gamma-ray low anomaly;while along with grain-size fining and argillaceous composition increasing in the sandstone,gamma-ray increasing gradually.Based on basic physical property characteristics of strata in the area have determined boundaries between Cenozoic group and bedrock,Xiashihezi Formation and Shanxi Formation in the minefield;as well as response characteristics of major marker beds of main mineable Nos.4 and 9 coal seams.The configuration of strata markers on logging traces can be important basis in strata correlation in the area.
出处
《中国煤炭地质》
2011年第11期69-71,共3页
Coal Geology of China
关键词
测井曲线
物性特征
标志层
马营堡井田
logging trace
physical property characteristic
marker bed
Mayingbu minefield
