ASSESSMENT OF MESOZOIC SOURCE ROCKS AT THE MARGIN OF SOUTH CHINA CONTINENT
-
摘要: 华南陆缘出露的上三叠统-白垩系,累计厚度超过10 000 m,露头调查未见油苗,烃源岩主要为泥岩、碳质泥岩和煤线,有机质类型以Ⅱ-Ⅲ型为主。上三叠统小水组,发育较深水的海相、Ⅱ型良好烃源岩,TOC为1.17%~5.43%;下侏罗统桥源组发育海陆过渡环境的Ⅲ型良好烃源岩,TOC为1.36%~10.37%;下侏罗统其他层系(金鸡组、银瓶山组、上龙水组、长埔组、吉水门组)发育浅海-半深海相的中等-好的烃源岩,TOC为0.5%~1.76%。烃源岩均已处于成熟-过成熟阶段。小水组、蓝塘群烃源岩品质良好,厚度巨大,在南海北部海域开展中生界烃源岩研究时,值得重点关注是否有与之相当的烃源岩层系发育。Abstract: The total thickness of the Upper Triassic and Cretaceous are over 10000 meters around the margin of South China continent. No oil seepage has been discovered so far on outcrops. The source rocks are mainly composed of mudstones, carbonaceous mudstones and coal seams. The organic matter is of typeⅡ-Ⅲ. High quality source rocks, which contain 1.17%~5.43% of TOC, have been found in the deep marine deposits of the Xiaoshui Formation of Upper Triassic. The Bianqiaoyuan Formation of Lower Jurassic is a transitional facies, where source rocks have been found with 1.36%~10.37% of TOC. In other Formations of Lower Jurassic there are rocks of neritic -bathyal marine facies with 0.5%~1.76% of TOC. The source rocks are now matured or over matured. Among them, the source rocks in the Xiaoshui Formation and Lantang Group are the best with regard to the high TOC and big thickness. In addition to the Mesozoic source rocks in Northern South China Sea, the source rocks around the margin of South China must be taken into account.
-
Keywords:
- Mesozoic /
- Source rocks /
- Onshore of South China
-
-
[1] 黎汉明.广东三叠纪岩石地层划分[J].广东地质,1995,10(1):54-60. [LI Hanming. Triassic stratigraphic classification in Guangdong province[J]. Guangdong Geology,1995,10(1):54-60.]
[2] 黎汉明.广东白垩纪岩石地层划分[J].广东地质,1995,10(1):61-68. [LI Hanming. Cretaceous stratigraphic classification in Guangdong province[J]. Guangdong Geology,1995,10(1):61-68.]
[3] 广东省地质矿产局.广东省区域地质志[M].北京:地质出版社,1998.[Guangzhou Geology and Mineral Resources Department. Regional Geological Annals of Guangdong province[M].Bejing:Geological Publishing House,1998.] [4] 广州省地调院.广东省岩相古地理图. 2007.[Guangzhou Geological Survey. Lithofacies-paleogeography map of Guangdong province. 2007.] [5] 周蒂,孙真,陈汉宗,等.南海及其围区中生代岩相古地理和构造演化[J].地学前缘,2005,12(3):204-218. [ZHOU Di,SUN Zhen,CHEN Hanzong,et al. Mesozoic lithofacies,paleogeography,and tectonic evolution of the South China Sea and surrounding areas[J].Earth Science Frontiers,2005,12(3):204-218.]
[6] 陈建平,赵长毅,何忠华.煤系有机质生烃潜力评价标准探讨[J].石油勘探与开发,1997,24(1):1-5. [CHEN Jianping,ZHAO Changyi,HE Zhonghua. Criteria for evaluating the hydrocarbon generating potential of organic matter in coal measures[J]. Petroleum Exploration and Development,1997,24(1):1-5.]
[7] 郝石生,王飞宇,高岗,等.下古生界高过成熟烃源岩特征和评价[J].中国石油勘探,1996,1(2):25-32. [HAO Shisheng,WANG Feiyu,GAO Gang, et al.Characteristics and assessments of early paleozoic high-overmature source rock[J].China Petroleum Exploration, 1996,1(2):25-32.]
[8] 金强.生油岩原始有机碳恢复方法的探讨[J].石油大学学报:自然科学版,1989,13(5):1-10. [JIN Qiang.The restoration of initial organic carbon in source rocks[J]. Journal of the University of Petroleum,China, 1989,13(5):1-10.]
[9] 赵政璋,李永铁,叶和飞,等.青藏高原海相烃源岩层的油气生成[M].北京:科学出版社,2000.[ZHAO Zhengzhang,LI Tieyong,YE Hefei,et al.The hydrocarbon generation of marine source rock in Tibetan Platean Basin[M].Beijing:Sciences press,2000.] [10] 秦建中,刘宝泉,国建英,等.关于碳酸盐岩烃源岩的评价标准[J].石油实验地质,2004,26(3):281-286. [QIN Jianzhong,LIU Baoquan,GUO Jianying,et al. Discussion on the evaluation standards of carbonate source rocks[J]. Petroleum Geology and Experiment,2004,26(3):281-286.]
[11] 秦建中,郑伦举,腾格尔.海相高演化烃源岩总有机碳恢复系数研究.地球科学-中国地质大学学报,2007,32(6):853-860. [QIN Jianzhong,ZHENG Lunju,TENG Ge'er. Study on the restitution coefficient of original total organic carbon for high mature marine hydrocarbon source rocks[J]. Earth Science-Journal of China University of Geosciences, 2007,32(6):853-860.]
[12] 苏艾国.干酪根碳同位素在成熟和风化过程中变化规律初探[J].矿物岩石地球化学通报,18(2):79-84.[SU Aiguo. Discussion on variation of carbon isotope of kerogen during thermal maturation and weathering[J]. Bulletin of Mineralogy Petrology and Geochemistry,18 (2):79-84.]
[13] 王玉华,侯启军,孙德汉,等.柴达木盆地北缘地区中新生代地层油气生成与资源评价[M].北京:科学出版社,2004.[WANG Yuhua,HOU Qijun,SUN Dehan,et al. Meso-cenozoic Hydrocarbon Generation and Resource Assessment in North Areas of Chaidamu Basin[M].Beijing:Sciences Press,2004.] [14] 熊国庆,江新胜,伍皓.用Mo-TOC相关性估算海相泥质烃源岩原始有机碳的一种新方法-以藏南白垩系海相泥岩、页岩为例[J].沉积与特提斯地质,2010,30(2):66-72. [XIONG Guoqing,JIANG Xinsheng,WU Hao. A new method to estimate original organic carbon in the marine argillaceous source rocks according to Mo-TOC correlation:An example from the Cretaceous marine mudstones and shales in southern Xizang[J]. Sedimentary Geology And Tethyan Geology, 2010,30(2):66-72.]
[15] 熊永强,张海组,耿安松.热演化过程中干酪根碳同位素组成的变化[J].石油实验地质,2004,26(5):484-487. [XIONG Yongqiang,ZHANG Haizu,GENG Ansong. Variation of carbon isotopic composition of kerogen during thermal evolution[J]. Petroleum Geology and Experiment,2004,26(5):484-487.]
[16] 郝沪军,林鹤鸣,杨梦雄,等.潮汕坳陷中生界-油气勘探的新领域[J].中国海上油气(地质),2001,15(3):157-162.[HAO Hujun,LIN Heming,YANG Mengxiong,et al. The Mesozoic In Chaoshan Depression:A new domain of petroleum exploration[J]. China Offshore Oil and Gas(Geology),2001,15(3):157-162.] [17] 郝沪军,施和生,张向涛,等.潮汕坳陷中生界及其石油地质条件-基于LF35-1-1探索井结果的讨论[J].中国海上油气(地质),2009,21(3):151-156.[HAO Hujun,SHI Hesheng,ZHANG Xiangtao,et al. Mesozoic sediments and their petroleum geology conditions in Chaoshan sag:a discussion based on drilling results from the exploratory well LF35-1-1[J]. China Offshore Oil and Gas(Geology),2009,21(3):151-156.] [18] 王国纯.中国东部海域中生界地质特征及含油气前景[J].中国海上油气(地质),1994,8(2):91-98.[WANG Guochun.Geological characteristics and hydrocarbon potential of Mesozoic in eastern China Offshore[J]. China Offshore Oil and Gas(Geology),1994,8(2):91-98.]
计量
- 文章访问数: 2051
- HTML全文浏览量: 201
- PDF下载量: 8
下载:
