数字测井在新驿煤矿勘探中的应用

Application of Digital Well Logging in Xinyi Coalmine Exploration

灰岩和煤层是山东新驿矿区良好的物性标志层,测井曲线规律性较强。依据3灰、7灰、8灰及3煤等标志层的位置及厚度关系,以及多孔对比的方法,断定矿区7号钻孔处于正断层位置,其3煤下灰岩为7灰而非3灰,并根据3煤与8灰的距离将断层落差由61m修正为112m。在矿区5号钻孔,依靠高分辨率的测井信息,准确划分了岩心破碎层段的岩性,弥补了由于钻探采取率低而引起的分层误差。

The limestone and coal seams are good physical property index beds in the Xinyi mine area,Shandong;and the logging traces have better regularity.According to index beds including Nos.3,7,8 limestone and No.3 coal seam locations and thicknesses relations,as well as multiple boreholes correlation,have figured out the location of No.7 borehole is right on a normal fault.The No.3 coal seam underlying limestone is No.7 rather than No.3,and according to interval between No.3 coal and No.8 limestone,amended the fault throw from 61m to 112m.In borehole No.5,based on high resolution logging information,divided rock layers in broken core sector,fetched up layering errors bring on by low core recovery.