石油勘探与开发 >

2021 , Vol. 48 >Issue 6: 1127 - 1136

DOI: https://doi.org/10.11698/PED.2021.06.05

油气勘探

鄂尔多斯盆地三叠系长7段黑色页岩形成环境及其对页岩油富集段的控制作用

  • 张斌 ,
  • 毛治国 ,
  • 张忠义 ,
  • 袁懿琳 ,
  • 陈小亮 ,
  • 石雨昕 ,
  • 刘广林 ,
  • 邵晓州
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  • 1.中国石油勘探开发研究院,北京 100083;
    2.中国石油长庆油田公司勘探开发研究院,西安 710021;
    3.中国地质大学（北京）,北京 100083
张斌（1978-）,男,湖北长阳人,博士,中国石油勘探开发研究院高级工程师,主要从事石油地质与油气地球化学研究工作。地址：北京市海淀区学院路20号,中国石油勘探开发研究院石油地质实验研究中心,邮政编码：100083。E-mail: zhangbin01@petrochina.com.cn

收稿日期: 2021-03-17

  修回日期: 2021-09-23

  网络出版日期: 2021-11-25

基金资助

国家科技重大专项（2016ZX05050）; 中国石油勘探开发研究院科学研究与技术开发项目（2018ycq02）

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Black shale formation environment and its control on shale oil enrichment in Triassic Chang 7 Member, Ordos Basin, NW China

  • ZHANG Bin ,
  • MAO Zhiguo ,
  • ZHANG Zhongyi ,
  • YUAN Yilin ,
  • CHEN Xiaoliang ,
  • SHI Yuxin ,
  • LIU Guanglin ,
  • SHAO Xiaozhou
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  • 1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    2. Institute of Petroleum Exploration and Development of Changqing Oilfield Company, PetroChina, Xi'an 710021, China;
    3. China University of Geosciences (Beijing), Beijing 100083, China

Received date: 2021-03-17

  Revised date: 2021-09-23

  Online published: 2021-11-25

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摘要

基于鄂尔多斯盆地西北缘钻探的三叠系延长组7段全取心井冯75井的地球化学分析,结合区域地质特征,对黑色页岩形成环境及其对页岩油富集的控制作用进行综合研究。自长73亚段到长71亚段黑色页岩中的有机碳含量从5.70%降至3.55%,氢指数从345 mg/g降至269 mg/g,而氧指数从6 mg/g逐渐增高至29 mg/g,指示长72亚段和长73亚段沉积时期为严重缺氧环境。生物标志化合物出现规律性变化,在长73亚段深度为2 753~2 777 m的井段出现明显“拐点”,指示陆源有机质输入增多。但是,在“拐点”附近出现有机碳同位素组成负向漂移,偏差约为2%,与生物标志化合物结果矛盾。古秦岭地区陆上火山活动所引起的极热和缺氧事件是造成其邻近的鄂尔多斯盆地黑色页岩中有机碳同位素组成负向漂移的主要原因。火山活动导致气温升高,空气污浊,引发极端天气,洪水增多,陆源有机质输入增多,同时形成极度缺氧环境,有利于有机质保存。陆源有机质比水生有机质更有利于形成轻质油,是页岩油富集的重要“甜点”层段。图11参46

关键词： 黑色页岩; 三叠系; 沉积环境; 火山灰; 缺氧事件; 页岩油; 鄂尔多斯盆地; 长7段

本文引用格式

张斌 , 毛治国 , 张忠义 , 袁懿琳 , 陈小亮 , 石雨昕 , 刘广林 , 邵晓州 . 鄂尔多斯盆地三叠系长7段黑色页岩形成环境及其对页岩油富集段的控制作用[J]. 石油勘探与开发, 2021 , 48(6) : 1127 -1136 . DOI: 10.11698/PED.2021.06.05

Abstract

Based on geochemical analysis results of core samples from the Triassic Chang 7 Member of Well Feng 75 drilled in the northwest margin of Ordos Basin, combined with geological characteristics of this region, the formation environment of the black shale and its control on shale oil enrichment are comprehensively studied. From Chang 73 to Chang 71 sub-members, the black shales have organic carbon contents decreasing from 5.70% to 3.55%, hydrogen indexes decreasing from 345 mg/g to 269 mg/g, while the oxygen indexes increasing gradually from 6 mg/g to 29 mg/g, indicating that the sedimentary environment during the depositional period of Chang 72 and Chang 73 sub-members was anoxic. Biomarkers in the black shales change regularly, and have an obvious “inflection point” at the depth of 2 753-2 777 m in Chang 73 sub-member, indicating that the input of terrigenous organic matter increased. However, there is a negative drift about 2% of organic carbon isotopic composition near the “inflection point”, which is in conflict with the results of biomarker compounds. This is because the extreme thermal and anoxic events caused by continental volcanic activity in the ancient Qinling region caused negative drift of carbon isotopic composition of the black shale in the Ordos Basin. The volcanic activity caused rise of temperature, polluted air, extreme weathers, more floods and thus more input of terrigenous organic matter, and gave rise to extremely anoxic environment conducive to the preservation of organic matter. Terrigenous organic matter is more conducive to the formation of light oil than aquatic organic matter, so these sections in Yanchang Formation are major “sweet spots” for shale oil enrichment.

Key words： black shale; Triassic; sedimentary environment; volcanic ash; anoxic event; shale oil; Ordos Basin; Chang 7 Member

参考文献

[1] 杨华, 牛小兵, 徐黎明, 等. 鄂尔多斯盆地三叠系延长组长7 段页岩油勘探潜力[J]. 石油勘探与开发, 2016, 43(4): 590-599.
YANG Hua, NIU Xiaobing, XU Liming, et al. Exploration potential of shale oil in Chang 7 Member, Upper Triassic Yangchang Formation, Ordos Basin, NW China[J]. Petroleum Exploration and Development, 2016, 43(4): 590-599.
[2] 葸克来, 李克, 操应长, 等. 鄂尔多斯盆地三叠系延长组长73亚段富有机质页岩纹层组合与页岩油富集模式[J]. 石油勘探与开发, 2020, 47(6): 1244-1255.
XI Kelai, LI Ke, CAO Yingchang, et al. Laminae combination and shale oil enrichment patterns of Chang 73 sub-member organic-rich shales in the Triassic Yanchang Formation, Ordos Basin, NW China[J]. Petroleum Exploration and Development, 2020, 47(6): 1244-1255.
[3] 赵文智, 胡素云, 侯连华, 等. 中国陆相页岩油类型、资源潜力及与致密油的边界[J]. 石油勘探与开发, 2020, 47(1): 1-10.
ZHAO Wenzhi, HU Suyun, HOU Lianhua, et al. Types and resource potential of continental shale oil in China and its boundary with tight oil[J]. Petroleum Exploration and Development, 2020, 47(1): 1-10.
[4] 付金华, 李士祥, 牛小兵, 等. 鄂尔多斯盆地三叠系长7段页岩油地质特征与勘探实践[J]. 石油勘探与开发, 2020, 47(5): 870-883.
FU Jinhua, LI Shixiang, NIU Xiaobing, et al. Geological characteristics and exploration of shale oil in Chang 7 Member of Triassic Yanchang Formation, Ordos Basin, NW China[J]. Petroleum Exploration and Development, 2020, 47(5): 870-883.
[5] 张斌, 于聪, 崔景伟, 等. 生烃动力学模拟在页岩油原位转化中的应用[J]. 石油勘探与开发, 2019, 46(6): 1212-1219.
ZHANG Bin, YU Cong, CUI Jingwei, et al. Kinetic simulation of hydrocarbon generation and its application to in-situ conversion of shale oil[J]. Petroleum Exploration and Development, 2019, 46(6): 1212-1219.
[6] 胡修棉, 李娟, 韩中, 等. 中新生代两类极热事件的环境变化、生态效应与驱动机制[J]. 中国科学: 地球科学, 2020, 50(8): 1023-1043.
HU Xiumian, LI Juan, HAN Zhong, et al. Two types of hyperthermal events in the Mesozoic-Cenozoic: Environmental impacts, biotic effects, and driving mechanisms[J]. SCIENCE CHINA Earth Sciences, 2020, 63(8): 1041-1058.
[7] BRAZIER J M, SUAN G, TACAIL T, et al. Calcium isotope evidence for dramatic increase of continental weathering during the Toarcian oceanic anoxic event (Early Jurassic)[J]. Earth and Planetary Science Letters, 2015, 411: 164-176.
[8] JOACHIMSKI M M, PANCOST R D, FREEMAN K H, et al. Carbon isotope geochemistry of the Frasnian-Famennian transition[J]. Palaeogeogr Palaeoclimatol Palaeoecol, 2002, 181: 91-109.
[9] 邓胜徽, 卢远征, 樊茹, 等. 早侏罗世Toarcian期大洋缺氧事件及其在陆地生态系统中的响应[J]. 中国地质大学学报, 2012, 37(S2): 23-38.
DENG Shenghui, LU Yuanzheng, FAN Ru, et al. Toarcian (Early Jurassic) oceanic anoxic event and the response in terrestrial ecological system[J]. Earth Science-Journal of China University of Geoscience, 2012, 37(S2): 23-38.
[10] 张文正, 杨华, 杨奕华, 等. 鄂尔多斯盆地长7优质烃源岩的岩石学、元素地球化学特征及发育环境[J]. 地球化学, 2008, 37(1): 59-64.
ZHANG Wenzheng, YANG Hua, YANG Yihua, et al. Petrology and element geochemistry and development environment of Yanchang Formation Chang-7 high quality source rocks in Ordos Basin[J]. Geochimica, 2008, 37(1): 59-64.
[11] 杨华, 张文正. 论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用: 地质地球化学特征[J]. 地球化学, 2005, 34(2): 147-154.
YANG Hua, ZHANG Wenzheng. Leading effect of the Seventh Member high-quality source rock of Yanchang Formation in Ordos Basin during enrichment of low-penetrating oil-gas accumulation: Geology and geochemistry[J]. Geochimica, 2005, 34(2): 147-154.
[12] 韩刚, 张文婧, 黄清华, 等. 松辽盆地晚白垩世青山口组缺氧事件层的地质地球化学特征[J]. 现代地质, 2012, 26(4): 741-746.
HAN Gang, ZHANG Wenjing, HUANG Qinghua, et al. Geological and geochemical characteristics of anoxic event bed in the Qingshankou Formation of Late Cretaceous in Songliao Basin[J]. Geoscience, 2012, 26(4): 741-746.
[13] 王书荣, 宋到福, 何登发. 三塘湖盆地火山灰对沉积有机质的富集效应及凝灰质烃源岩发育模式[J]. 石油学报, 2013, 34(6): 1077-1087.
WANG Shurong, SONG Daofu, HE Dengfa. The enrichment effect of organic materials by volcanic ash in sediments of the Santanghu Basin and evolutionary patern of tuffaceous source rocks[J]. Acta Petrolei Sinica, 2013, 34(6): 1077-1087.
[14] 蒋宜勤, 柳益群, 杨召, 等. 准噶尔盆地吉木萨尔凹陷凝灰岩型致密油特征与成因[J]. 石油勘探与开发, 2015, 42(6): 741-749.
JIANG Yiqin, LIU Yiqun, YANG Zhao, et al. Characteristics and origin of tuff - type tight oil in Jimsar Depression, Junggar Basin, NW China[J]. Petroleum Exploration and Development, 2015, 42(6): 741-749.
[15] 李登华, 李建忠, 黄金亮, 等. 火山灰对页岩油气成藏的重要作用及其启示[J]. 天然气工业, 2014, 34(5): 56-65.
LI Denghua, LI Jianzhong, HUANG Jinliang, et al. An important role of volcanic ash in the formation of shale plays and its inspiration[J]. Natural Gas Industry, 2014, 34(5): 56-65.
[16] 冯子辉, 霍秋立, 王雪. 松辽盆地松科1井晚白垩世沉积地层有机地球化学研究[J]. 地学前缘, 2009, 16(5): 181-191.
FENG Zihui, HUO Qiuli, WANG Xue, et al. Geochemical research on the Late Cretaceous strata of Well SK1 in Songliao Basin[J]. Earth Science Frontiers, 2009, 16(5): 181-191.
[17] JONES B, MANNING D A C. Comparison of geochemical indices used for the interpretation of palaeoredox conditions in ancient mudstones[J]. Chemical Geology, 1994, 111: 111-129.
[18] ZHAO Jianhua, JIN Zhijun, JIN Zhenkui, et al. Applying sedimentary geochemical proxies for paleoenvironment interpretation of organic-rich shale deposition in the Sichuan Basin, China[J]. International Journal of Coal Geology, 2016, 163: 52-71.
[19] ZENG Shengqiang, WANG Jian, FU Xiugen, et al. Geochemical characteristics, redox conditions, and organic matter accumulation of marine oil shale from the Changliang Mountain area, northern Tibet, China[J]. Marine and Petroleum Geology, 2015, 64: 203-221.
[20] PETERS K E, WALTERS C C, MOLDOWAN J M. The biomarker guide: Volume 2: Biomarkers and isotopes in petroleum exploration and earth history[M]. 2nd ed. Cambridge: Cambridge University Press, 2005.
[21] MOLDOWAN J M, DAHL J, MCCAFFREY M A, et al. Application of biological marker technology to bioremediation of refinery by-products[J]. Energy & Fuels, 1995, 9(1): 155-162.
[22] NOBEL R A, ALEXANDER R, KAGI R I, et al. Identification of some diterpenoid hydrocarbons in petroleum[J]. Organic Geochemistry, 1986, 10: 825-829.
[23] BARNES M A, BARNES W C. Oixc and anoxic diagenesis of diterpenes in lacustrine sediments[C]//BJOROY M. Advances in organic geochemistry. Chichester: John Wiley, 1983: 289-298.
[24] 包建平, 朱翠山, 张秋茶, 等. 库车坳陷前缘隆起带上原油地球化学特征[J]. 石油天然气学报, 2007, 29(4): 40-45.
BAO Jianping, ZHU Cuishan, ZHANG Qiucha, et al. Oil geochemical characters in the frontier Uplift of Kuqa Depression[J]. Journal of Oil and Gas Technology, 2007, 29(4): 40-45.
[25] ZHANG Shuichang, ZHANG Bin, ZHU Guangyou, et al. Geochemical evidence for coal-derived hydrocarbons and their charge history in the Dabei Gas Field, Kuqa Thrust Belt, Tarim Basin, NW China[J]. Marine and Petroleum Geology, 2011, 28(7): 1364-1375.
[26] PHILP R P, GILBERT T D. Unusual distribution of biological markers in Australian crude oil[J]. Nature, 1982, 299(5880): 245-247.
[27] 张大江, 王大锐, 章聆. 我国不同地质时期沉积有机质中稳定碳同位素组成特征及其意义[J]. 科学通报, 1994(4): 302-305.
ZHANG Dajiang, WANG Darui, ZHANG Ling. Stable carbon isotopic composition of sedimentary organic matter in different geological periods in China and its significance[J]. Chinese Science Bulletin, 1994(4): 302-305.
[28] 张林晔, 孔祥星, 张春荣, 等. 济阳坳陷下第三系优质烃源岩的发育及其意义[J]. 地球化学, 2003, 32(1): 35-42.
ZHANG Linye, KONG Xiangxing, ZHANG Chunrong, et al. High-quality oil-prone source rocks in Jiyang Depression[J]. Geochemica, 2003, 32(1): 35-42.
[29] 苏爱国, 陈志勇, 梁狄刚, 等. 青藏高原油气形成: 柴达木盆地西部新生界[M]. 北京: 地质出版社, 2006.
SU Aiguo, CHEN Zhiyong, LIANG Digang, et al. Oil-gas formation in Qinghai-Tibet Plateau-Cenozoic of Western Qaidam, China[M]. Beijing: Geological Publishing House, 2006.
[30] 张斌, 何媛媛, 陈琰, 等. 柴达木盆地西部咸化湖相优质烃源岩地球化学特征及成藏意义[J]. 石油学报, 2017, 38(10): 1158-1167.
ZHANG Bin, HE Yuanyuan, CHEN Yan, et al. Geochemical characterisitics and oil accumulation significance of the high quality saline lacustrine source rocks in the western Qaidam Basin, NW China[J]. Acta Petrolei Sinica, 2017, 38(10): 1158-1167.
[31] 张斌, 胡健, 杨家静, 等. 烃源岩对致密油分布的控制作用: 以四川盆地大安寨为例[J]. 矿物岩石地球化学通报, 2015, 34(1): 45-55.
ZHANG Bin, HU Jian, YANG Jiajing, et al. Controlling effect of source rocks on the occurrence of tight oil: Taking the Da'anzhai reservoir of Sichuan Basin as an example[J]. Bulletin of Mineralogy, Petrology and Geochemisty, 2015, 34(1): 45-55.
[32] HOU Lianhua, MA Weijiao, LUO Xia, et al. Characteristics and quantitative models for hydrocarbon generation retention-production of shale under ICP conditions: Example from the Chang 7 member in the Ordos Basin[J]. Fuel, 2020, 279: 118497.
[33] HOU Lianhua, MA Weijiao, LUO Xia, et al. Hydrocarbon generation-retention-expulsion mechanism and shale oil producibility of the permian lucaogou shale in the Junggar Basin as simulated by semi-open pyrolysis experiments[J]. Marine and Petroleum Geology, 2021, 125(1): 104880.
[34] HOU Lianhua, LUO Xia, HAN Wenxu, et al. Geochemical evaluation of the hydrocarbon potential of shale oil and its correlation with different minerals: A case study of the TYP shale in the Songliao Basin, China[J]. Energy & Fuels, 2020, 34: 11998-12009.
[35] XU Weimu, RUHL M, JENKYNS H C. Carbon sequestration in an expanded lake system during the Toarcian oceanic anoxic event[J]. Nature Geosciencs, 2017, 10(2): 129-134.
[36] JONES M M, IBARRA D E, GAO Y, et al. Evaluating Late Cretaceous OAEs and the influence of marine incursions on organic carbon burial in an expansive East Asian paleo-lake[J]. Earth and Planetary Science Letters, 2018, 484(8): 41-52.
[37] 梁庆韶. 鄂尔多斯盆地三叠系延长组长7事件沉积特征及其耦合关系[D]. 成都: 成都理工大学, 2020.
LIANG Qingshao. Characteristics of event deposition and coupling relationship in the Chang 7 oil member of Triassic Yanchang Formation, Ordos Basin[D]. Chengdu: Chengdu University of Technology, 2020.
[38] 李森, 朱如凯, 崔景伟, 等. 鄂尔多斯盆地长7段细粒沉积岩特征与古环境: 以铜川地区瑶页1井为例[J]. 沉积学报, 2020, 38(3): 554-569.
LI Sen, ZHU Rukai, CUI Jingwei, et al. Sedimentary characteristics of fine-grained sedimentary rock and paleo-environment of Chang 7 Member in the Ordos Basin: A case study from Well Yaoye 1 in Tongchuan[J]. Acta Sedimentologica Sinica, 2020, 38(3): 554-569.
[39] 袁伟, 柳广弟, 罗文斌, 等. 鄂尔多斯盆地长7段富有机质页岩中磷灰石类型及其成因[J]. 天然气地球科学, 2016, 27(8): 1399-1408.
YUAN Wei, LIU Guangdi, LUO Wenbin, et al. Species and formation mechanism of apatites in the 7th member of Yanchang Formation organic-rich shale of Ordos Basin, China[J]. Natural Gas Geoscience, 2016, 27(8): 1399-1408.
[40] 金鑫, 时志强, 王艳艳, 等. 晚三叠世中卡尼期极端气候事件: 研究进展及存在问题[J]. 沉积学报, 2015, 33(1): 105-115.
JIN Xin, SHI Zhiqiang, WANG Yanyan, et al. Mid-Carnian (Late Triassic) extreme climate event: Advances and unsolved problems[J]. Acta Sedimentologica Sinica, 2015, 33(1): 105-115.
[41] 赵向东, 薛乃华, 王博, 等. 三叠纪卡尼期湿润幕事件研究进展[J]. 地层学杂志, 2019, 43(3): 306-314.
ZHAO Xiangdong, XUE Naihua, WANG Bo, et al. Carnian (late Triassic) Pluvial Episode: Current status and future challenges[J]. Journal of Stratigraphy, 2019, 43(3): 306-314.
[42] CORSO J D, MIETTO P, NEWTON R J, et al. Discovery of a Major negative δ13C spike in the Carnian (Late Triassic) linked to the eruption of Wrangellia flood basalts[J]. Geology, 2012, 40(1): 79-82.
[43] SUN Yadong, WIGNALL P B, JOACHIMSKI M M, et al. Climate warming, euxinia and carbon isotope perturbations during the Carnian (Triassic) Crisis in South China[J]. Earth and Planetary Science Letters, 2016, 444: 88-100.
[44] ZHU Rukai, CUI Jingwei, DENG Shenghui, et al. High-precision dating and geological significance of Chang 7 Tuff Zircon of the Triassic Yanchang Formation, Ordos Basin in Central China[J]. Acta Geologica Sinica (English Edition), 2019, 93(6): 1823-1834.
[45] JARVIE D M. Shale resource systems for oil and gas: Part 2: Shale oil resource systems[C]//BREYER J A. Shale reservoirs: Giant resources for the 21st century. Tulsa: AAPG, 2012: 89-119.
[46] LI Maowen, CHEN Zhuoheng, MA Xiaoxiao, et al. A numerical method for calculating total oil yield using a single routine rock-eval program: A case study of the Eocene Shahejie Formation in Dongying Depression, Bohai Bay Basin, China[J]. International Journal of Coal Geology, 2018, 191: 49-65.
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