Organic geochemistry of Carboniferous-Permian sources rocks in Qiangtang Basin, Tibet
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摘要:
长期以来，羌塘盆地烃源岩的研究一直限于中生代地层，而对其古生代地层生烃能力一直缺乏系统研究。针对这一问题，本文选择羌塘盆地石炭-二叠系8条剖面的暗色泥岩及碳酸盐岩样品，对其从有机质丰度、有机质类型和热演化程度等方面进行了有机地球化学特征的分析。研究发现，石炭-二叠系可能烃源岩类型包括泥岩和碳酸盐岩两种，其分布总体上受沉积相的控制，碳酸盐岩烃源岩可能为局限台地相发育的泥晶灰岩，而泥质烃源岩主要为三角洲及斜坡相发育的暗色泥岩及凝灰质泥岩。石炭-二叠纪泥岩有机碳含量较高，具有较好生烃能力，大多达到烃源岩标准，尤其是刻莫石炭系剖面及贡日二叠系剖面，大多为中等-好烃源岩。碳酸盐岩有机碳含量总体比较低，为非烃源岩。石炭-二叠系碳酸盐岩烃源岩有机质类型为Ⅱ1型，泥质烃源岩有机质类型主要为Ⅱ2-Ⅲ型。石炭-二叠系烃源岩热演化程度总体较高，除盆地东部刻莫石炭系剖面处在成熟阶段外，大都处在高成熟-过成熟阶段，非常有利于天然气的生成，具备良好的天然气勘探前景。
Abstract:The Jurassic source rocks have long been one of the research hotspots, but the Carboniferous-Permian source rocks' capability of hydrocarbon generation has not aroused much attention due to the scattered distribution in Qiangtang Basin. Organic geochemical characteristics of carbonate rock and mudstone samples from eight sections in the Carboniferous-Permian strata of Qiangtang Basin were analyzed for the organic matter abundance, types and thermal evolution. The authors found that source rocks, including carbonate rock and mudstone, were influenced by the evolution of sedimentary environment. The carbonate source rocks might have been the micrite limestone of the carbonate platform, and the mudstone source rocks were mainly the dark mudstone of delta and slope facies and tuffaceous mudstone. The organic carbon content of Carboniferous-Permian mudstone is higher, suggesting hydrocarbon-generative potential; most sections have moderate to high content of organic carbon except Rejuechaka section which has no or poor source rock. Kemo section and Gongri section have mainly reached the standard of mid-good hydrocarbon source rock. However, the Carboniferous-Permian carbonate rock shows a lower content of organic carbon, with no or poor source rock. The type of organic matter of Carboniferous-Permian carbonate rock is mainly Ⅱ1, but the type of organic matter of Carboniferous-Permian mudstone is mainly Ⅱ2 and Ⅲ. The degree of thermal evolution of Carboniferous Permian source rock is generally high, and all the source rocks, except for the Kemo areas where the source rock is at the mature stage, are mostly in the high mature and over-mature stage. Such a situation is very favorable for the generation of natural gas and has a good prospect of natural gas exploration.
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表 1 羌塘盆地石炭—二叠纪地层划分与对比(据王剑等, 2009修改)
Table 1. Stratigraphic classification and correlation of Carboniferous-Permian strata in the Qiangtang Basin (modified from Wang Jian et al, 2009)
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表 2 羌塘盆地有机质类型测试结果
Table 2. Test results of organic matter type of Carboniferous-Permian source rocks in the Qiangtang Basin
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表 3 羌塘盆地石炭—二叠系烃源岩Ro-Tmax值统计
Table 3. Ro-Tmax data of Carboniferous-Permian source rocks from Qiangtang Basin
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Bjoroy M, Hall P B, Moe R P. 1994. Stable carbon isotope variation of nalkanes in Central Graben oils[J]. Organic Geochemistry, 22:355-381. doi: 10.1016/0146-6380(94)90114-7
Chen Jiangping, Liang Digang, Zhang Shuichang. 2012. Evaluation Criterion and Methods of the Hydrocarbon Generation Potential for China's Paleozoic Marine Ssource Rocks[J]. Acta Geologica Sinica, 86(7):1132-1141(in Chinese with English abstract). http://xueshu.baidu.com/s?wd=paperuri%3A%28629f011c7686906ab507802295b86720%29&filter=sc_long_sign&tn=SE_xueshusource_2kduw22v&sc_vurl=http%3A%2F%2Fen.cnki.com.cn%2FArticle_en%2FCJFDTOTAL-DZXE201207009.htm&ie=utf-8&sc_us=13135691420752626817
Chen Wenbin, Fu Xiugen, Tan Fuwen, Feng Xinglei. 2013. The discovery and significance of the Carboniferous source rocks in Qiangtang Basin, Tibet[J]. Geological Bulletin of China, 32(7):1105-1112(in Chinese with English abstract).
Chen Wenbin, Fu Xiugen, Tan Fuwen, Feng Xinglei. 2015.Geochemical characteristics of Upper Triassic source rocks from typical sections in Qiangtang Basin, northern Tibet[J]. Geology in China, 42(4):1151-1160(in Chinese with English abstract). http://www.en.cnki.com.cn/Article_en/CJFDTOTAL-DIZI201504028.htm
Chen Wenbin, Fu Xiugen, Tan Fuwen, Zeng Shengqiang, Feng Xinglei, Song Chunyan, Wang Dong. 2017. Geochemical characteristics and significance of Permain dolomite oil seepages Qiangtang basin[J]. Acta Sedimentologica Sinica, 35(3):611-620(in Chinese with English abstract).
Ding Wenlong, Li Chao, Su Aiguo, He Zhonghua. 2010. Study on the comprehensive geochemical cross section of Mesozoic marine source rocks and prediction of favorable hydrocarbon generation area in Qiangtan basin, Tibeta[J]. Acta Petrologica Sinica, 27(3):878-896(in Chinese with English abstract). http://www.oalib.com/paper/1474318
Fu Jiamo, Liu Dehan. 1982. Some charactersitics of the evolution of organic matter in Carbonate Formations[J]. Acta Petroleum Sinica, (1):1-8(in Chinese with English abstract).
He Zhonghua, Li Cai, Yang Deming, Chen Guangquan. 2000.The tectonic-sedimentary feature and evolution of Qiangtang basin in Northern Tibet[J]. Journal of Changchun University of Science and Technology, 30(4):347-352(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-CCDZ200004007.htm
Huang Jiyun. 2000. Nature of the Qiangtang basin and its tectonic evolution[J].Journal of Geomechanics, 6 (4):58-66(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZLX200004008.htm
Li Cai, Zhai Qingguo, Cheng Liren, Xu Feng, Huang Xiaopeng. 2005.Though on some key geological problems in the Qiangtang area, Qinghai-Tibet plateau[J].Geological Bulletin of China, 24(4):295-301(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZQYD200504000.htm
Liu Guangdi, Zhang Houfu. 2009. Petroleum Geology[M]. Beijing:Petrolem Industry Press:179-183(in Chinese).
Liu Yong, Cao Chuncao, Lu Jinhai. 1998. Tectonic evolution in Qiangtang basin of northern Tibet[J]. Fault Block Oil & Gas Field, 5(5):6-12(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DKYT199805001.htm
Lu Shuangfang, Zhang Min. 2008. Petrolem Geochemistry[M]. Beijing:Petrolem Industry Press, 65-77(in Chinese).
Magoon L B, Dow W G. 1991. The petroleum system-from source to trap[J]. AAPG Memoir, 14(3):93-120. http://www.osti.gov/scitech/biblio/7079288
Meng Yuanlin, Xiao Lihua, Yang Junsheng, Wang Jianguo, Sun Yuanlin.1999. Influences of weathering on organic matter of outcrop and correcting methods in Xining Basin[J]. Geochimica, 28(1):42-50(in chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQHX901.005.htm
Qin Jianzhong. 2006. Distributions of the main Mesozoic hydrocarbon source rocks in the Qiangtang Basin of the Qinghai-Tibet Plateau[J]. Pet. Geol. Exp., 28(2):134-141(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-SYSD200602008.htm
Radke M, Welte D H. 1981.The Methyllphenanthrene Index(MPI):A Maturity Parameter Based on Aromatic Hydrocarbons[M]. Advances in Organic Geochemistry. Chichester:Wiley, 504-512.
Song Chunyan, Cao Junfeng, Wang Jian, Tan Fuwen, Fu Xiugen, He Jianglin, Zeng Shengqiang, He Li. 2014. The discovery and basic characteristics of ancient reservoir in Permian of Jiaomuchaka Area, Qiangtang Basin[J]. Xinjiang Geology, 32(1):87-91(in Chinese with English abstract).
Tissot B P, Welte D H. 1984. Petroleum Formation and Occurrence[M]. Berlin, Heidlberg, New York:Spring-Verlag, 1-699.
Wang Chengshan, Li Yalin, Li Yongtie. 2006. Discussion on evaluation of oil and gas resources in Qinghai-Tibet Plateau[J]. Acta Petrolei Sinica, 27(4):1-7(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYXB200604000.htm
Wang Darui. 2000. Stable Isotope Geochemistry of Oil and Gas[M]. Beijing:Petrolem Industry Press:179-183(in Chinese).
Wang Jian, Ding Jun, Wang Chengshan, Tan Fuwen, Chen Ming. 2009. The Investigation and Evaluation of the Oil and Gas Resources in the Qinghai-Xizang Plateau[M]. Beijing:Geological Publishing House, 1-22((in Chinese).
Wang Qijun, Chen Jianyu. 1988. Petrolem Geochemistry[M]. Wuhan:China University of Geosicence Press, 97-176(in Chinese).
Wang Xiuyan, Yun Jinbiao, Luo Duqing, Teng Yuhong, Lin Tiefeng.1999. Discussion on geodynamic evolution and oil-gas prospect of Qiangtang Basin[J]. Acta Petrolei Sinica, 20(3):38-42(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYXB903.006.htm
Zhang Shuichang, Liang Digang, Zhang Dajiang. 2002. Evaluation on criteria for Paleozoic effective hydroearbon source rocks[J]. Petroleum Exploration and Development, 29(2):8-12(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SKYK200202001.htm
Zhao Zhengzhang, Li Yongtie, Ye Hefei, Zhang Yuwen. 2000a.Mesozoic Sedimentary Facies, Reservoir and Caprock Characteristics on the Qinghai-Xizang Plateau[M]. Beijing:Science Press, 1-9(in Chinese).
Zhao Zhengzhang, Li Yongtie, Ye Hefei, Zhang Yuwen. 2000b.Petroleum Generation of the Marine Source Rocks on the QinghaiXizang Plateau[M]. Beijing:Science Press, 1-634(in Chinese).
Zeng Shengqiang, Wang Jian, Fu Xiugen, Feng Xinglei, Sun Wei. 2013. Hydrocarbon generation potential and sedimentary environment for the source rocks along the Changshe Mountain oil shale section in North Qiangtang Basin[J]. Geology in China, 40(6):1861-1871(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DIZI201306016.htm
Zheng Hongwei, He Rizheng, Yang Gui. 2012. Geological and geophysical characteristics of Shuanghu-Gangmacuo-Longmucuo structural belt in Qiangtang area[J]. Geology in China, 39(5):1229-1235(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DIZI201205009.htm
陈文彬, 付修根, 谭富文, 冯兴雷. 2013.藏北羌塘盆地石炭系烃源岩的发现及其油气地质意义[J].地质通报, 32(7):1105-1112. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201307013.htm
陈文彬, 付修根, 谭富文, 冯兴雷. 2015.藏北羌塘盆地上三叠统典型剖面烃源岩地球化学特征研究[J].中国地质, 2015, 42(4):1151-1160. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20150428&flag=1
陈文彬, 付修根, 谭富文, 曾胜强, 冯兴雷, 宋春彦, 王东. 2017.羌塘盆地二叠系白云岩油苗地球化学特征及意义[J].沉积学报, 35(3):611-620. http://www.cnki.com.cn/Article/CJFDTOTAL-CJXB201703018.htm
陈建平, 梁狄刚, 张水昌, 何春萍, 赵喆, 张蒂嘉. 2012.中国古生界海相烃源岩生烃潜力评价标准与方法[J].地质学报, 86(7):1132-1141. http://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201207009.htm
丁文龙, 李超, 苏爱国, 何忠华. 2010.西藏羌塘盆地中生界海相烃源岩综合地球化学剖面研究及有利生烃区预测[J].岩石学报, 27(3):878-896. http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201103025.htm
傅家谟, 刘德汉. 1982.碳酸盐岩有机质演化特征与油气评价[J].石油学报, (1):1-8. doi: 10.7623/syxb198201001
和钟铧, 李才, 杨德明, 陈光权. 2000.西藏羌塘盆地的构造沉积特征及演化[J].长春科技大学学报, 30(4):347-352. http://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ200004007.htm
黄继钧. 2000.羌塘盆地性质及构造演化[J].地质力学学报, 6(4):58-66. http://www.cnki.com.cn/Article/CJFDTOTAL-DZLX200004008.htm
李才, 翟庆国, 程立人, 徐峰, 黄小鹏. 2005.青藏高原羌塘地区几个关键地质问题的思考[J].地质通报, 2005, 24(4):295-301. http://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD200504000.htm
柳广弟, 张厚福. 2009.石油地质学[M].北京:石油工业出版社, 179-183.
刘勇, 曹春潮, 吕金海. 1998.藏北羌塘盆地演化初探[J].断块油气田, 15(5):6-12. http://www.cnki.com.cn/Article/CJFDTOTAL-DKYT199805001.htm
卢双舫, 张敏. 2008.油气地球化学[M].北京:石油工业出版社, 65-77.
孟元林, 肖丽华, 杨俊生, 王建国, 孙元林.1999.风化作用对西宁盆地野外露头有机质性质的影响及校正[J].地球化学, 28(1):42-50. http://www.cnki.com.cn/Article/CJFDTOTAL-DQHX901.005.htm
秦建中. 2006.青藏高原羌塘盆地中生界主要烃源层分布特征[J].石油实验地质, 28 (2):134-140. doi: 10.11781/sysydz200602134
宋春彦, 曹俊峰, 王剑, 谭富文, 付修根, 何江林, 曾胜强, 何利. 2014.羌塘盆地角木茶卡地区二叠系古油藏的发现及基本特征[J].新疆地质, 32(1):87-91. http://www.cnki.com.cn/Article/CJFDTOTAL-XJDI201401016.htm
王成善, 李亚林, 李永铁. 2006.青藏高原油气资源远景评价问题[J].石油学报, 27(4):1-7. doi: 10.7623/syxb200604001
王大锐. 2000.油气稳定同位素地球化学[M].北京:石油工业出版社, 179-183.
王启军, 陈建渝.1988.油气地球化学[M].武汉:中国地质大学出版社, 97-176.
王剑, 丁俊, 王成善, 谭富文, 陈明.2009.青藏高原油气资源战略选区调查与评价[M].北京:地质出版社, 1-22.
王岫岩, 云金表, 罗笃清, 滕玉洪, 林铁峰. 1999.西藏羌塘盆地动力学演化与油气前景探讨[J].石油学报, 20(3):38-42. doi: 10.7623/syxb199903007
赵政璋, 李永铁, 叶和飞, 张昱文. 2000a.青藏高原中生界沉积相、油气储盖层特征[M].北京:科学出版社, 1-9.
赵政璋, 李永铁, 叶和飞, 张昱文.2000b.青藏高原海相烃源层的油气生成[M].北京:科学出版社, 1-634.
张水昌, 梁狄刚, 张大江.2002关于古生界烃源岩有机质丰度的评价标准[J].石油勘探与开发, 29(2):8-12. http://www.cnki.com.cn/Article/CJFDTOTAL-SKYK200202001.htm
曾胜强, 王剑, 付修根, 冯兴雷, 孙伟. 2013.北羌塘盆地长蛇山油页岩剖面烃源岩生烃潜力及沉积环境[J].中国地质, 40(6):1861-1871. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20130615&flag=1
郑洪伟, 贺日政, 杨贵.2012.羌塘地体内部双湖-冈玛错-龙木错构造带地质与地球物理特征[J].中国地质, 39(5):1229-1235. http://geochina.cgs.gov.cn/ch/reader/view_abstract.aspx?file_no=20120510&flag=1
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