波阻抗反演技术在煤田勘探中的应用

Application of Wave Impedance Inversion Technique in Coalfield Exploration

基于波阻抗反演技术将垂向分辨率高的测井数据和横向连续性好的地震资料相结合,在更加准确和全面地反映地质体客观情况的前提下,介绍了波阻抗反演的原理与具体流程,分析了煤层尖灭、分叉合并、断层、灰岩层及岩浆岩在波阻抗反演剖面上的响应特征,并通过波阻抗反演对煤层厚度变化趋势和砂岩的分布范围进行定量研究,进而提高了煤层及其周围岩层的解释精度。

Based on wave impedance inversion technology which is the combination ot vertical higher resolution well logging with transversal continuous better seismic data can accurately and comprehensively reflect the objective condition of geological bodies. The principle and process of wave impedance inversion are introduced. The response characteristics of coal seam pinch out, splitting and merging, fault, Ordovician limestone and magmatic rock in wave impedance inversion profile are analyzed. The changing trend of coal seam thickness and the distribution range of sandstone are quantitatively studied by wave impedance inversion. So the interpretation accuracy of coal seam and surrounding rock is improved.