青海省柴北缘油页岩物性研究

A Study on Physical Property of Oil Shale on North Margin of Qaidam Basin,Qinghai Province

研究柴北缘油页岩物性特征,并找出煤田测井方法对油页岩解释原则及方法,为研究区内钻孔中煤系地层的沉积环境提供依据。其方法是通过对比分析钻孔中油页岩层位与其他岩层异常测井曲线形态特征的差异,以此总结油页岩独有的特征形态,从而对油页岩赋存状态做出定性解释。另外对比油页岩与泥岩测井资料发现,二者的测井曲线虽有相似的响应特征,但仍可利用长源距伽马伽马、自然伽马、视电阻率、视密度等测井参数值及变化幅度的差异进行有效识别。

The physical property of oil shale on the north margin of the Qaidam Basin has been studied,thus found out the interpretation principle and method of oil shale using coalfield well logging,and provided basis to study sedimentary environment of coal measures strata in the area.The way is through contrastive analysis of borehole oil shale horizons and other differences in strata anomalous logging trace configuration characteristics,summed up the particular configuration characteristics of oil shale,thus can qualitatively interpret the occurrence state of oil shale.Besides,after the contrast of oil shale and mudstone logging data has found that although the logging traces of the both have similar response characteristics,but can still use logging parameters and variation amplitude of long spaced gamma-gamma,gamma-ray,apparent resistivity,apparent density to identify them effectively.