利用测井技术评价松辽盆地南部油页岩

为了利用松辽盆地南部已有钻井的测井资料评价油页岩，分析了松辽盆地南部嫩二段油页岩的测井响应特征，充分利用测井资料连续性的优势，采用5口井93块油页岩岩心的有机碳、含油率化验分析数据和测井响应特征，建立嫩二段油页岩的有机碳含量与含油率之间定量关系式T^a=0.548 6TOC+0.18和△logR、自然伽玛与有机碳含量之间的定量关系式TOC=6.262 8×△logR+1.05，进而建立利用测井资料定量评价油页岩含油率模型T^a=0.546 8a×△logR＋0.548 6×△TOC＋0.18。通过模型计算出的油页岩段的含油率与油页岩实测含油率数据基本一致，而且计算出的含油率值连续。

Evaluation of Oil Shale in the Southern Songliao Basin Using Logging Techniques

In order to evaluate the oil shale in the southern Songliao Basin using the logging data of the drilled wells, the logging response characteristics of the oil shale in the second member of the Nenjiang Formation in southern Songliao Basin were analyzed. The advantage of the continuity of logging data was fully utilized, and the data of the organic carbon content and their logging response characteristics of the cores from 93 oil shale in 5 wells were used to establish the quantitative formula between the organic carbon content and the oil yield(T^a=0.548 6TOC+0.18) and among △logR, natural gamma ray and organic carbon content (TOC=6.262 8×△logR+1.05) of the oil shale in the second member of the Nenjiang Formation. The oil yield model of the oil shale is also set up as T^a=0.5468a×△logR＋0.548 6×△TOC＋0.18 to quantitatively evaluate the oil shale based on logging data. The calculated oil yield of the oil shale is continuous and is almost same as their real oil yield, which thus solves the problem of having no oil yield data before, and provides rational oil yield and thickness of the oil shale for evaluation of the oil shale in the southern Songliao Basin.