有机酸盐热模拟产物中芳烃馏分特征及其地质意义  

The Geological Significance and Characteristics of Aromatic Fraction during Organic Acid Salt Generating Hydrocarbon

作　　者：雷天柱[1] 夏燕青[1] 靳明[2] 邱军利[1] 刘宗银 方琳浩[1] 

机构地区：[1]中国科学院油气资源研究重点实验室,兰州730000 [2]曲阜师范大学,山东曲阜273165 [3]甘肃有色金属地质研究所,兰州730000

出　　处：《沉积学报》2010年第6期1250-1253,共4页Acta Sedimentologica Sinica

基　　金：西部博士资助项目;国家自然科学基金项目(批准号:40643016);国家"973"项目(编号:2001CB209102)资助

摘　　要：为了研究有机酸盐生烃演化特征,对有机酸盐进行了270℃、320℃、360℃、400℃和430℃一系列温度点的热模拟,实验结果表明,有机酸盐会大量转化为酮系列化合物,酮化合物最大产率阶段为320℃到360℃,其中360℃时产率最高,其转化率可达有机酸盐加入量的39%,400℃后产率急剧下降。这表明脂肪酸镁向酮系列化合物的最大转化温度段稍早或一致于有机质大量生烃阶段,但该类化合物对热较敏感,高温下不易保存,因此酮作为评价有机酸盐生烃贡献强度的指标只能适合于中—低温演化阶段的烃源岩。In order to study on the evolution of hydrocarbon-generation by organic acid salt,pyrolysis experiment is taken on organic acid salt at a series of temperature point-270℃,320℃,360℃,400℃ and 430℃.The experimental result indicates that organic acid salt can be largely produced into ketone compounds.The threshold temperature of larger-quantity yield is between 320℃ and 360℃ and the peak production rate at 360℃,where the conversion rate of the organic acid salt reaches 39% .But beyond the 400℃ the production rate rapidly declines.This result suggests that magnesium salt converses into ketone at the lower temperature or same as that of hydrocarbon-generation.But this type of compounds is sensitive to thermal,so it is difficult to preserve at higher temperature.Therefore,as the index of estimating hydrocarbon generation by organic acid salt,the index of ketone is generally only suitable for the middlelow maturity hydrocarbon source rocks.

关 键 词：有机酸盐 热模拟 酮 芳烃馏分 

分 类 号：TE122.1[石油与天然气工程—油气勘探]