应用矿物沥青基质荧光特征评价烃源岩的母质类型  

Evaluation on Source Rock Types by Using Fluorescence Characteristics of Mineral-bituminous Groundmass

作　　者：熊敏[1] 曾庆辉[1] 刘德汉[1] 肖贤明[1] 

机构地区：[1]中国科学院广州地球化学研究所有机地球化学国家重点实验室

出　　处：《石油天然气学报》2007年第4期62-65,共4页Journal of Oil and Gas Technology

基　　金：中国科学院重点方向项目(KZCX2-YW-114);国家杰出青年基金项目(40625011)

摘　　要：通过对东营凹陷沙四段与沙三段烃源岩的研究,发现这两套烃源岩中矿物沥青基质可大致划分成4种类型(称为类型A、B、C、D),分别对应于烃源岩中干酪根的藻类无定形体、菌解无定形体A、菌解无定形体B及腐殖无定形体,由此提出应用矿物沥青基质荧光特征评价烃源岩母质类型的方法。大量研究样品分析结果表明,应用该方法所确定的烃源岩母质类型与应用全岩Rock-Eval方法所确定的母质类型基本相符,显示出该方法具有一定应用前景。The determination of groundmass types of source rocks was one of the important issues of source rock evaluation.Conventional methods such as whole rock Rock-Eval analysis,kerogen element analysis,and kerogen microscopic analysis,are all expensive as well as time-wasting.The Es4 and Es3 source rocks from the Dongyun Depression were inves-tigated and four types of the mineral-bituminous groundmass,such as type A,B,C,and D,which corresponded to algae amorphinite,degraded amorphinite A,degraded amorphinite B and humic amorphinite were recognized by its fluorescence properties,from which a method was suggested to determine their source matter types based on the fluorescence properties of mineral-bituminous groundmass of source rocks.The source rock types from Dongyun Depression were evaluated by this method.The result can be largely compared with that of the whole rock Rock-Eval analysis.The proposed method is simple,economic and time-saving,it has great potential for source rock evaluation.

关 键 词：生油层 烃源岩 母质类型 沥青质 矿物沥青基质 荧光特征 

分 类 号：P618.13[天文地球—矿床学]