A STUDY ON THERMAL EVOLUTION OF ORGANIC MATTER IN LOWER TERTIARY SOURCE ROCK OF SUBEI BASIN
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摘要: 本文应用多种光学和化学标志,对苏北盆地下第三系烃源岩有机质热演化特征和阶段进行了研究。研究表明,(1)镜质组反射率Ro是最可靠的演化标志;(2)孢子体和藻类体的荧光变化规律相同,均具有特殊重要的演化意义;(3)随热演化程度的增加,烃源岩可溶有机物成分和结构发生显着变化;(4)苏北盆地有机质热演化阶段划分为阶段Ⅰ和阶段Ⅱ,其界线出现在Ro0.60%～0.65%,并揭示出不同构造单元有机质热演化的不均衡性。Abstract: Based on many optical and chemical indexes the characteristics and stages of thermal evolution of organic matter in lower Tertiary source rock of Subei Basin were studied in this paper. The following four conclions could be made from the stydies: (1)the vitrinite reflectance (Ro)is the most reliable scale for thermal evolution, (2)With the same fluorescence alternation Sporinite and alginite,are of special importance in thermal evolution, (3)the component and struture of soluble organic matter in source rock changed greatly as the degree of thermal evolution increase, (4)the thermal evolution of organic matter in Subei Basin could be divided into two stages,i. e. stage Ⅰ and stage Ⅱ, which by 0.60%～0.65% Ro,and moreover, the difference of maturity in different tectonic units was showed.
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[1] 包建平等.生物标志物组合与苏北金湖凹陷阜二段沉积环境研究.沉积学报,1991,19(4):136-142 [2] Stach E et al. STachs Textbook of Coal Petrology. 3rd revised and enlarged edition. Berlin:Stuttgart.1982 [3] 肖贤明.有机岩石学及其在油气评价中的应用.广州:广东科技出版社,1992 [4] Ottenjann et al. Spectral fluorescence measurement of sporinites in reflected light and their applicability for coalification studies.Paris;Petrographic Organique et Potentiel Petrolier,1975,49-65 [5] Teichmuller M et al. Application of fluorescence microscopy in coal petrology and oil exploration. J. Microscopy,1977,109(1):49-73 [6] 钟宁宁等.显微组份荧光性变化—烃源岩有机质热演化的一个重要方面.江汉石油学院学报,1991,13(3):1-6 [7] Mackenzie A S et al. Molecular parametes of maturation in the Toarcian shales,Paris Basin, France I. Changes in the configurations of the acyclic isoprenoid alkanes,Steranes and teriterpanes. Geochim. Cosmochim. Acta,1980, 44.1709-1721 [8] Brooks J et al(高品文译).有机质成熟作用与化石燃料勘探.北京:石油工业出版社,1987 [9] 曾宪章等.中国陆相原油和生油岩中的生物标志物.兰州:甘肃科学技术出版社,1989 [10] Tissot B P and Welte D H. Petroleum formation and occurence. New York;Spring-Verlag,1978 -
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