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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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镜状体反射率可作为下古生界高过成熟烃源岩成熟度标尺
, PP. 14-18
Keywords: 镜状体反射率,热成熟度,藻类体,早古生代,烃源岩
Abstract:
？镜状体是我国下古生界高过成熟烃源岩中常见的显微组分,它主要来源于藻类及其降解产物热解成烃后原地残留物.镜状体反射率随埋深加大呈线性增加.根据对奥陶系主要成烃母质粘球形藻和相同热成熟度的黄县褐煤热模拟残渣的对比分析,建立了镜状体(vl)、粘球形藻藻类体、镜质体(v)光性演化的相关关系,镜质体和镜状体反射率关系表示为vro=0.533vlro+0.667.镜状体反射率作为下古生界烃源岩有机成熟度指标主要适用于镜质体反射率1.0%～2.0%ro阶段,它可作为我国下古生界高过成熟烃源岩成熟度标尺.
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