窑街油页岩含矿区油页岩特征及成矿控制因素

The characteristics of oil shale and the controlling factors of metallogeny in the Yaojie oil shale ore-bearing area

为了研究窑街煤田所含的油页岩的赋存特征、物理学特征、地球化学等特征,充分利用钻井资料、野外露头资料、分析测试资料等数据对窑街矿区油页岩的相关特征展开了系统分析。具有开采价值的油页岩主要赋存在中侏罗统的中上部,油一层平均厚度较油四层大,但平均含油率却低于后者,另外前者矿层稳定性优于后者。油一层干酪根类型属于腐泥型,油四层干酪根属于腐殖-腐泥型。总结了研究区油页岩成藏控制因素,其主要受古地貌特征、古气候条件、沉积环境、构造等条件的影响。

In order to study the occurrence characteristics,physical characteristics and geochemistry characteristics of oil shale in the Yaojie coalfield,full use of drilling data,field outcrop data,analysis and test data were collected to analyze the related characteristics of oil shale in the Yaojie coalfield mining area systematically. The oil shale with exploitation value mainly existed in the middle upper part of the Middle Jurassic. The average thickness of the oil shale layer1 was thicker than the oil shale layer 4,but the average oil content of the oil shale layer1 was lower than the layer 4. Besides,the stability of the layer1 was better than that of the layer 4. The type of kerogen of the layer 1 of oil shale belongs to the type of humic mud,and the layer 4 kerogen of oil shale belongs to humic-humic type. The control factors of oil shale formation in the research area was summarized,and it was mainly influenced by paleogeomorphologic features,paleoclimatic conditions,sedimentary environment and tectonic conditions.