Carbon isotopic compositions and origin of Paleozoic crude oil in the platform region of Tarim Basin, NW China
ZHU Xinjian1, CHEN Jianfa1, WU Jianjun1, 2, WANG Yifan1, ZHANG Baoshou2, ZHANG Ke2, HE Liwen1
1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China; 2. PetroChina Tarim Oilfield Company, Xinjiang Korla 841000, China
Abstract:Based on the carbon isotopic compositions of Cambrian-Ordovician source rocks Kerogen Samples and Paleozoic crude oil in the platform region of Tarim Basin, the origin and source of Paleozoic crude oil were investigated. There are at least two sets of source rocks with different carbon isotope compositions in the Cambrian, the Lower Cambrian source rock with lighter carbon isotope composition and Middle-Upper Cambrian source rock with heavier carbon isotope composition, while the Ordovician source rock is somewhere in between. The δ13C values of Paleozoic crude oil samples are wide in distribution range, from -35.2‰ to -28.1‰. The crude oil with lighter carbon isotopic compositions (δ13C<-34.0‰) was mainly derived from Lower Cambrian source rock, and the crude oil with heavier carbon isotopic composition (δ13C>-29.0‰) was mainly derived from the Middle-Upper Cambrian source rocks, and the crude oil with δ13C value in between may be derived from Cambrian source rocks. It is concluded through analysis that the Cambrian source rock could become the major source rock in the Tarim Basin and the platform region has huge potential oil and gas resources in the deep formations.
[1] 梁狄刚, 张水昌, 张宝民, 等. 从塔里木盆地看中国海相生油问题[J]. 地学前缘, 2000, 7(4): 534-547. LIANG Digang, ZHANG Shuichang, ZHANG Baomin, et al. Understanding on marine oil generation in China based on Tarim Basin[J]. Earth Science Frontiers, 2000, 7(4): 534-547. [2] 赵靖舟. 塔里木盆地北部寒武—奥陶系海相烃源岩重新认识[J].沉积学报, 2001, 19(1): 117-124. ZHAO Jingzhou. Evaluation on the Cambrian-Ordovician marine source rocks from the North Tarim Basin[J]. Acta Sedimentologica Sinica, 2001, 19(1): 117-124. [3] 王招明, 肖中尧. 塔里木盆地海相原油的油源问题的综合评述[J].科学通报, 2004, 49(S1): 1-8. WANG Zhaoming, XIAO Zhongyao. Comprehensive discussion on the source rocks of marine oils in Tarim Basin[J]. Chinese Science Bulletin, 2004, 49(S1): 1-8. [4] 杜金虎, 潘文庆. 塔里木盆地寒武系盐下白云岩油气成藏条件与勘探方向[J]. 石油勘探与开发, 2016, 43(3): 327-339. DU Jinhu, PAN Wenqing. Accumulation conditions and play targets of oil and gas in the Cambrian subsalt dolomite, Tarim Basin, NW China[J]. Petroleum Exploration and Development, 2016, 43(3): 327-339. [5] 张水昌, 王飞宇, 张保民, 等. 塔里木盆地中上奥陶统油源层地球化学研究[J]. 石油学报, 2000, 21(6): 23-28. ZHANG Shuichang, WANG Feiyu, ZHANG Baomin, et al. Middle-upper Ordovician source rock geochemistry of the Tarim Basin[J]. Acta Petrolei Sinica, 2000, 21(6): 23-28. [6] 张水昌, 梁狄刚, 黎茂稳, 等. 分子化石与塔里木盆地油源对比[J]. 科学通报, 2002, 47(S1): 16-23. ZHANG Shuichang, LIANG Digang, LI Maowen, et al. Molecular fossils and oil-source rock correlations in Tarim Basin, NW China[J]. Chinese Science Bulletin, 2002, 47(S1): 16-23. [7] ZHANG S C, SU J, WANG X M, et al. Geochemistry of Palaeozoic marine petroleum from the Tarim Basin, NW China: Part 3. Thermal cracking of liquid hydrocarbons and gas washing as the major mechanisms for deep gas condensate accumulations[J]. Organic Geochemistry, 2011, 42(11): 1394-1410. [8] 张水昌, 高志勇, 李建军, 等. 塔里木盆地寒武系—奥陶系海相烃源岩识别与分布预测[J]. 石油勘探与开发, 2012, 39(3): 285-294. ZHANG Shuichang, GAO Zhiyong, LI Jianjun, et al. Identification and distribution of marine hydrocarbon source rocks in the Ordovician and Cambrian of the Tarim Basin[J]. Petroleum Exploration and Development, 2012, 39(3): 285-294. [9] 宋到福, 王铁冠, 李美俊. 塔中地区中深1和中深1C井盐下寒武系油气地球化学特征及其油气源判识[J]. 中国科学: 地球科学, 2016, 46(1): 107-117. SONG Daofu, WANG Tieguan, LI Meijun. Geochemistry and possible origin of the hydrocarbons from wells Zhongshen1 and Zhongshen1C, Tazhong Uplift[J]. SCIENCE CHINA Earth Sciences, 2016, 59(4): 840-850. [10] 肖中尧, 黄光辉, 卢玉红, 等. 塔里木盆地塔东2井原油成因分析[J]. 沉积学报, 2004, 22(S1): 66-72. XIAO Zhongyao, HUANG Guanghui, LU Yuhong, et al. Origin of oils well from Tadong 2 in Tarim Basin[J]. Acta Sedinentologica Sinica, 2004, 22(S1): 66-72. [11] LI S M, PANG X Q, JIN Z J, et al. Petroleum source in the Tazhong Uplift, Tarim Basin: New insights from geochemical and fluid inclusion data[J]. Organic Geochemistry, 2010, 41(6): 531-553. [12] LI S M, AMRANI A, PANG X Q, et al. Origin and quantitative source assessment of deep oils in the Tazhong Uplift, Tarim Basin[J]. Organic Geochemistry, 2015, 78(2): 1-22. [13] 何登发, 贾承造, 柳少波, 等. 塔里木盆地轮南低凸起油气多期成藏动力学[J]. 科学通报, 2002, 47(S1): 122-130. HE Dengfa, JIA Chengzao, LIU Shaobo, et al. Oil and gas multistage forming dynamics of Lunnan Low Uplift in Tarim Basin[J]. Chinese Science Bulletin, 2002, 47(S1): 122-130. [14] 赵孟军, 王招明, 潘文庆, 等. 塔里木盆地满加尔凹陷下古生界烃源岩的再认识[J]. 石油勘探与开发, 2008, 35(4): 417-423. ZHAO Mengjun, WANG Zhaoming, PAN Wenqing, et al. Lower Palaeozoic source rocks in Manjiaer Sag, Tarim Basin[J]. Petroleum Exploration and Development, 2008, 35(4): 417-423. [15] 孙永革, 肖中尧, 徐世平, 等. 塔里木盆地原油中芳基类异戊二烯烃的检出及其地质意义[J]. 新疆石油地质, 2004, 25(2): 215-218. SUN Yongge, XIAO Zhongyao, XU Shiping, et al. Aryl-isoprenoids in crude oil and its implication in geological exploration[J]. Xinjiang Petroleum Geology, 2004, 25(2): 215-218. [16] CAI C, ZHANG C, WORDEN R H, et al. Application of sulfur and carbon isotopes to oil-source rock correlation: A case study from the Tazhong area, Tarim Basin, China[J]. Organic Geochemistry, 2015, 83(4): 140-152. [17] 王招明, 谢会文, 陈永权, 等. 塔里木盆地中深1井寒武系盐下白云岩原生油气藏的发现与勘探意义[J]. 中国石油勘探, 2014, 19(2): 1-13. WANG Zhaoming, XIE Huiwen, CHEN Yongquan, et al. Discovery and exploration of Cambrian subsalt dolomite original hydrocarbon reservoir at Zhongshen-1 well in Tarim Basin[J]. China Petroleum Exploration, 2014, 19(2): 1-13. [18] 吴林, 管树巍, 任荣, 等. 前寒武纪沉积盆地发育特征与深层烃源岩分布: 以塔里木新元古代盆地与下寒武统烃源岩为例[J]. 石油勘探与开发, 2016, 43(6): 905-915. WU Lin, GUAN Shuwei, REN Rong, et al. The characteristics of Precambrian sedimentary basin and the distribution of deep source rock: A case study of Tarim Basin in Neoproterozoic and source rocks in Early Cambrian, Western China[J]. Petroleum Exploration and Development, 2016, 43(6): 905-915. [19] 朱光有, 陈斐然, 陈志勇, 等. 塔里木盆地寒武系玉尔吐斯组优质烃源岩的发现及其基本特征[J]. 天然气地球科学, 2016, 27(1): 8-21. ZHU Guangyou, CHEN Feiran, CHEN Zhiyong, et al. Discovery and basic characteristics of the high quality source rocks of the Cambrian Yuertusi Formation in Tarim Basin[J]. Natural Gas Geoscience, 2016, 27(1): 8-21. [20] 梁狄刚, 陈建平. 中国南方高、过成熟区海相油源对比问题[J]. 石油勘探与开发, 2005, 32(2): 8-14. LIANG Digang, CHEN Jianping. Oil-source correlations for high and over matured marine source rocks in South China[J]. Petroleum Exploration and Development, 2005, 32(2): 8-14. [21] PRICE L, LEFEVER J. Dysfunctionalism in the Williston Basin: The Bakken/mid-Madison petroleum system[J]. Bulletin of Canadian Petroleum Geology, 1994, 42(2): 187- 218. [22] STAHL W J. Source rock-crude oil correlation by isotopic type-curves[J]. Geochimica et Cosmochimica Acta, 1978, 42(10): 1573-1577. [23] GRATZER R, BECHTEL A, SACHSENHOFER R F, et al. Oil-oil and oil-source rock correlations in the Alpine Foreland Basin of Austria: Insights from biomarker and stable carbon isotope studies[J]. Marine and Petroleum Geology, 2011, 28(6): 1171-1186. [24] STAHL W J. Carbon and nitrogen isotopes in hydrocarbon research and exploration[J]. Chemical Geology, 1977, 20(8): 121-149. [25] CLAYTON C J. Effect of maturity on carbon isotope ratios of oils and condensates[J]. Organic Geochemistry, 1991, 17(6): 887-899. [26] GHORI K A R, CRAIG J, THUSU B, et al. Global infracambrian petroleum systems: A review[J]. Geological Society, 2009, 326(1): 109-136. [27] DUTTA S, BHATTACHARYA S, RAJU S V. Biomarker signatures from Neoproterozoic-Early Cambrian oil, western India[J]. Organic Geochemistry, 2013, 56(5): 68-80. [28] GRANTHAM P J, WAKEFIELD L L. Variations in the sterane carbon number distributions of marine source rock derived crude oils through geological time[J]. Organic Geochemistry, 1988, 12(1): 61-73. [29] GROSJEA E, LOVE G D, KELLY A E, et al. Geochemical evidence for an Early Cambrian origin of the ‘Q’ oils and some condensates from North Oman[J]. Organic Geochemistry, 2012, 45(4): 77-90. [30] KELLY A E, LOVE G D, ZUMBERGE J E, et al. Hydrocarbon biomarkers of Neoproterozoic to Lower Cambrian oils from Eastern Siberia[J]. Organic Geochemistry, 2011, 42(6): 640-654. [31] 杨福林, 王铁冠, 李美俊. 塔里木台盆区寒武系烃源岩地球化学特征[J]. 天然气地球科学, 2016, 27(5): 861-872. YANG Fulin, WANG Tieguan, LI Meijun. Geochemical study of Cambrian sourcerocks in the cratonic area of Tarim Basin, NW China[J]. Natural Gas Geoscience, 2016, 27(5): 861-872. [32] 赵宗举, 张运波, 潘懋, 等. 塔里木盆地寒武系层序地层格架[J].地质论评, 2010, 56(5): 609-620. ZHAO Zongju, ZHANG Yunbo, PAN Mao, et al. Cambrian sequence stratigraphic framework in Tarim Basin[J]. Geological Review, 2010, 56(5): 609-620. [33] 陈践发, 孙省利, 刘文汇, 等. 塔里木盆地下寒武统底部富有机质层段地球化学特征及成因探讨[J]. 中国科学: 地球科学, 2004, 34(S1): 107-113. CHEN Jianfa, SUN Xingli, LIU Wenhui, et al. Geochemical characteristics and genesis of the organic layer in the bottom of the Lower Cambrian in Tarim Basin[J]. SCIENCE CHINA Earth Sciences, 2004, 47(S2): 125-132. [34] LOGAN G A, HAYES J M,HIESHIMA G B, et al. Terminal Proterozoic reorganization of biogeochemical cycles[J]. Nature, 1995, 376(6535): 53-56. [35] GOLYSHEV S I, VERKHOVSKAYA N A, BURKOVA V N, et al. Stable carbon isotopes in source-bed organic matter of west and east Siberia[J]. Organic Geochemistry, 1991, 14(3): 277-291. [36] 王杰, 陈践发, 王大锐, 等. 华北北部中、上元古界生烃潜力及有机质碳同位素组成特征研究[J]. 石油勘探与开发, 2002, 29(5): 13-15. WANG Jie, CHEN Jianfa, WANG Darui, et al. Study on the characteristics of carbon isotopic composition and hydrocarbon generation potential of organic matter of Middle-Upper Proterozoic in northern part of North China[J]. Petroleum Exploration and Development, 2002, 29(5): 13-15. [37] 张纪智, 王招明, 杨海军, 等. 塔里木盆地中深地区寒武系盐下白云岩油气来源及差异聚集[J]. 石油勘探与开发, 2017, 44(1): 40-47. ZHANG Jizhi, WANG Zhaoming, YANG Haijun, et al. Origin and differential accumulation of hydrocarbons in Cambrian sub-salt dolomite reservoirs in Zhongshen Area, Tarim Basin, NW China[J]. Petroleum Exploration and Development, 2017, 44(1): 40-47. [38] 刘文汇, 腾格尔, 王晓锋, 等. 中国海相碳酸盐岩层系有机质生烃理论新解[J]. 石油勘探与开发, 2017, 44(1): 155-164. LIU Wenhui, BORJIGIN Tenger, WANG Xiaofeng, et al. New knowledge of hydrocarbon generating theory of organic matter in Chinese marine carbonates[J]. Petroleum Exploration and Development, 2017, 41(1): 155-164. [39] ZHU M Y, BABCOCK L E, PENG S C. Advances in Cambrian stratigraphy and paleontology: Integrating correlation techniques, paleobiology, taphonomy and paleoenvironmental reconstruction[J]. Palaeoworld, 2006, 15(3): 217-222. [40] 樊茹, 邓胜徽, 张学磊. 寒武系碳同位素漂移事件的全球对比性分析[J]. 中国科学: 地球科学, 2011, 41(12): 1829-1839. FAN Ru, DENG Shenghui, ZHANG Xuelei. Significant carbon isotope excursions in the Cambrian and their implications for global correlations[J]. SCIENCE CHINA Earth Sciences, 2011, 54(11): 1686-1695. [41] 张仲培, 刘士林, 杨子玉, 等. 塔里木盆地麦盖提斜坡构造演化及油气地质意义[J]. 石油与天然气地质, 2011, 32(6): 909-919. ZHANG Zhongpei, LIU Shilin, YANG Ziyu, et al. Tectonic evolution and its petroleum geological significances of the Maigaiti Slop, Tarim Basin[J]. Oil and Gas Geology, 2011, 32(6): 909-919. [42] 丁勇, 贾存善, 邵志兵. 巴楚—麦盖提地区主要油气藏原油地球化学特征及油源探讨[J]. 石油实验地质, 2013, 35(6): 683-688. DING Yong, JIA Cunshan, SHAO Zhibing. Geochemical features and sources of crude oils in Bachu-Maigaiti area[J]. Petroleum Geology and Experiment, 2013, 35(6): 683-688. [43] 崔景伟, 王铁冠, 胡健, 等. 塔里木盆地和田河气田轻质油成熟度判定及其油源意义[J]. 石油与天然气地质, 2013, 34(1): 27-36. CUI Jingwei, WANG Tieguan, HU Jian, et al. Maturity of light oil and its significance in indicating oil source in Hetianhe gas field, Tarim Basin[J]. Oil and Gas Geology, 2013, 34(1): 27-36. [44] 胡健, 王铁冠, 陈建平, 等. 塔西南坳陷周缘原油地球化学特征与成因类型[J]. 石油学报, 2015, 36(10): 1221-1233. HU Jian, WANG Tieguan, CHEN Jianping, et al. Geochemical characteristics and origin patterns of oils in periphery of southwestern Tarim Basin[J]. Acta Petrolei Sinica, 2015, 36(10): 1221-1233. [45] HUANG H, ZHANG S, SU J. Palaeozoic oil-source correlation in the Tarim Basin, NW China: A review[J]. Organic Geochemistry, 2016, 94(4): 32-46. [46] 金之钧, 刘全有, 云金表, 等. 塔里木盆地环满加尔凹陷油气来源与勘探方向[J]. 中国科学: 地球科学, 2017, 47(3): 310-320. JIN Zhijun, LIU Quanyou, YUN Jinbiao, et al. Potential petroleum sources and exploration directions around the Manjar Sag in the Tarim Basin[J]. SCIENCE CHINA Earth Sciences, 2017, 60(2): 235-245. [47] 沈安江, 郑剑锋, 陈永权, 等. 塔里木盆地中下寒武统白云岩储集层特征、成因及分布[J]. 石油勘探与开发, 2016, 43(3): 340-349. SHEN Anjiang, ZHENG Jianfeng, CHEN Yongquan, et al. Characteristics, origin and distribution of dolomite reservoirs in Lower-Middle Cambrian, Tarim Basin, NW China[J]. Petroleum Exploration and Development, 2016, 43(3): 340-349.