风化作用对高演化黑色岩系有机质影响因素分析——以塔里木盆地柯坪地区玉尔吐斯组为例

陶国亮; 申宝剑; 腾格尔; 仰云峰; 徐二社; 潘安阳

doi:10.11781/sysydz201603375

风化作用对高演化黑色岩系有机质影响因素分析——以塔里木盆地柯坪地区玉尔吐斯组为例

doi: 10.11781/sysydz201603375

中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214151

基金项目: 中石化科技部项目"沥青质分析新方法研究与海相油源判识应用"(P14051)和"海相页岩超显微特征及对页岩气富集的关系"(P15097)联合资助。

详细信息

作者简介:
陶国亮(1981-),男,博士,高级工程师,从事石油地质研究。E-mail:taogl.syky@sinopec.com。

中图分类号: TE122.1
计量
- 文章访问数: 1270
- HTML全文浏览量: 92
- PDF下载量: 1116
- 被引次数: 0
出版历程
- 收稿日期: 2016-01-04
- 修回日期: 2016-04-15
- 刊出日期: 2016-05-28

Weathering effects on high-maturity organic matter in a black rock series: A case study of the Yuertusi Formation in Kalpin area, Tarim Basin

Wuxi Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China

摘要

摘要: 通过对塔里木盆地柯坪地区东二沟剖面下寒武统玉尔吐斯组不同风化程度岩石样品的有机地球化学、扫描电镜和能谱分析,探讨了风化作用对岩石有机质特征的影响。结果表明:风化作用越强,有机碳丰度越低、生烃潜力越差,黑色页岩样品中的有机碳和氯仿沥青"A"含量的最大风化丢失量在95%以上,硅质岩风化丢失量小于50%。气候、暴露地表时间等因素是岩石发生风化作用的主要外部因素;矿物组成和有机质赋存方式是影响风化程度的重要内部因素,有机质以游离态形式赋存在高演化页岩中更易发生化学风化而丢失。因此,不能仅根据野外剖面烃源岩样品现今地化特征来进行烃源岩评价和油气资源量评价,而应考虑风化作用的影响。
- 风化作用 /
- 黑色页岩 /
- 硅质岩 /
- 有机质赋存方式 /
- 塔里木盆地
Abstract: The effects of weathering on organic matter of black shales has been studied using organic geochemistry, scanning electron microscopy and X-ray fluorescence energy spectrum. The black shales were collected from the Lower Cambrian Yuertusi Formation along Dong'ergou section in Kalpin area, Tarim Basin. As weathering increased, organic abundance became much smaller, and hydrocarbon generation potential became poorer. The maximum weathering losses of organic matter and chloroform bitumen "A" were more than 95% in black shales and less than 50% in siliceous rocks, indicating that siliceous rocks were more resistant to weathering. Climate and surface exposure time were the main causes for rock weathering. Mineral composition and organic matter occurrence determined weathering degree. Free organic matter occurring in over-mature shales was easily lost through weathering. In petroleum evaluation, it is important to not only study the present geochemical features of source rocks, but also to considerweathering effects.
- weathering /
- black shale /
- siliceous rock /
- occurrence of organic matter /
- Tarim Basin

HTML全文

参考文献(35)

[1]	Clayton J L,King J D.Effects of weathering on biological marker and aromatic hydrocarbon composition of organic matter in Phosphoria shale outcrop[J].Geochimica et Cosmochimica Acta,1987,51(8):2153-2157.
[2]	Loukola-Ruskeeniemi K,Uutela A,Tenhola M,et al.Environmental impact of metalliferous black shales at Talvivaara in Finland,with indication of lake acidification 9000 years ago[J].Journal of Geochemical Exploration,1998,64(1/3):395-407.
[3]	Peucker-Ehrenbrink B,Blum J D.Re-Os isotope systematics and weathering of Precambrian crustal rocks:Implications for the marine osmium isotope record[J].Geochimica et Cosmochimica Acta,1998,62(19/20):3193-3203.
[4]	Peucker-Ehrenbrink B,Hannigan R.Effects of black shale weathering on the mobility of rhenium and platinum group elements[J].Geo-logy,2000,28(5):475-478.
[5]	巫锡勇,贺玉龙,魏有仪,等.黑色岩层的风化特征研究[J].地质地球化学,2001,29(2):17-23. Wu Xiyong,He Yulong,Wei Youyi,et al.Study on weathering characteristics of black strata[J].Geology-Geochemistry,2001,29(2):17-23.
[6]	Jaffe L A,Peucker-Ehrenbrink B,Petsch S T.Mobility of rhenium,platinum group elements and organic carbon during black shale weathering[J].Earth and Planetary Science Letters,2002,198(3/4):339-353.
[7]	Dalai T K,Singh S K,Trivedi J R,et al.Dissolved rhenium in the Yamuna River System and the Ganga in the Himalayas Role of black shale weathering on the budgets of Re,Os,and U in rivers and CO₂ in the atmosphere[J].Geochimica et Cosmochimica Acta,2002,66(1):29-43.
[8]	Clayton J L,Swetland P J.Subaerial weathering of sedimentary organic matter[J].Geochimica et Cosmochimica Acta,1978,42(3):304-312.
[9]	Petsch S T,Berner R A,Eglinton T I.A field study of the chemical weathering of ancient sedimentary organic matter[J].Organic Geochemistry,2000,31(5):475-487.
[10]	Petsch S T,Edwards K J,Eglinton T I.Microbial transformations of organic matter in black shales and implications for global biogeochemical cycles[J].Palaeogeograpy,Palaeoclimatology,Palaeoecology,2005,219(1/2):157-170.
[11]	Littke R,Klussmann,U,Krooss B,et al.Quantification of loss of calcite,pyrite,and organic matter due to weathering of Toarcian black shales and effects on kerogen and bitumen characteristics[J].Geochimica et Cosmochimica Acta,1991,55(11):3369-3378.
[12]	Chang S.Coal weathering and the geochemical carbon cycle[D].New Haven,CT:Yale University,1999:19-25.
[13]	李晓元.风化作用对地面样品有机质的影响[J].石油勘探与开发,1985(5):24-33. Li Xiaoyuan.The influence of weathering on organic matter in surface samples[J].Petroleum Expoloration and Development,1985(5):24-33.
[14]	孟元林,肖丽华,杨俊生,等.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,1999,28(1):42-51. Meng Yuanlin,Xiao Lihua,Yang Junsheng,et al.Influences of weathering on organic matter of outcrop and correcting methods in Xining Basin[J].Geochimica,1999,28(1):42-51.
[15]	魏建设,卢进才,魏仙样,等.强烈风化作用对烃源岩评价指标的影响:以额济纳旗及邻区石炭系-二叠系为例[J].地质通报,2012,31(10):1715-1724. Wei Jianshe,Lu Jincai,Wei Xianyang,et al.The influence of intense weathering on the evaluation indexes of hydrocarbon source rocks:A case study of Carboniferous-Permian Strata of Ejin Banner and its neighboring areas[J].Geological Bulletin of China,2012,31(10):1715-1724.
[16]	高岗,刚文哲,梁浩,等.风化作用对烃源岩地球化学特征的影响:以吐哈盆地石炭系-下二叠统烃源岩为例[J].中国石油勘探,2014,19(6):33-39. Gao Gang,Gang Wenzhe,Liang Hao,et al.Weathering effects on source rock geochemical characteristics:Taking Carboniferous-Lower Permian source rock in Turpan-Hami Basin for instance[J].China Petroleum Exploration,2014,19(6):33-39.
[17]	张君峰,王东良,秦建中,等.青藏高原地面露头样品风化校正研究[J].石油实验地质,2001,23(3):297-300. Zhang Junfeng,Wang Dongliang,Qin Jianzhong,et al.Study on the weathering correction of surface outcrop samples from the Qinghai-Tibet Plateau[J].Petroleum Geology & Experiment,2001,23(3):297-300.
[18]	赵宗举,周新源,郑兴平,等.塔里木盆地主力烃源岩的诸多证据[J].石油学报,2005,26(3):10-15. Zhao Zongju,Zhou Xinyuan,Zheng Xingping,et al.Evidences of chief source rock in Tarim Basin[J].Acta Petrolei Sinica,2005,26(3):10-15.
[19]	胡广,刘文汇,腾格尔,等.塔里木盆地下寒武统泥质烃源岩成烃生物组合的构造-沉积环境控制因素[J].石油与天然气地质,2014,35(5):685-695. Hu Guang,Liu Wenhui,Tengger,et al.Tectonic-sedimentary constrains for hydrocarbon generating organism assemblage in the Lower Cambrian argillaceous source rocks,Tarim Basin[J].Oil & Gas Geology,2014,35(5):685-695.
[20]	陈强路,储呈林,杨鑫,等.塔里木盆地寒武系沉积模式与烃源岩发育[J].石油实验地质,2015,37(6):689-695. Chen Qianglu,Chu Chenglin,Yang Xin,et al.Sedimentary model and development of the Cambrian source rocks in the Tarim Basin, NW China[J].Petroleum Geology & Experiment,2015,37(6):689-695.
[21]	陈强路,杨鑫,储呈林,等.塔里木盆地寒武系烃源岩沉积环境再认识[J].石油与天然气地质,2015,36(6):880-887. Chen Qianglu,Yang Xin,Chu Chenglin,et al.Recognition of depositional environment of Cambrian source rocks in Tarim Basin[J].Oil & Gas Geology,2015,36(6):880-887.
[22]	朱传玲,闫华,云露,等.塔里木盆地沙雅隆起星火1井寒武系烃源岩特征[J].石油实验地质,2014,36(5):626-632. Zhu Chuanling,Yan Hua,Yun Lu,et al.Characteristics of Cambrian source rocks in well XH1,Shaya Uplift,Tarim Basin[J].Petroleum Geology & Experiment,2014,36(5):626-632.
[23]	云金表,金之钧,解国军.塔里木盆地下古生界主力烃源岩分布[J].石油与天然气地质,2014,35(6):827-838. Yun Jinbiao,Jin Zhijun,Xie Guojun.Distribution of major hydrocarbon source rocks in the Lower Palaeozoic,Tarim Basin[J].Oil & Gas Geology,2014,35(6):827-838.
[24]	Prahl F G,De Lange G J,Scholten S,et al.A case of post-depositional aerobic degradation of terrestrial organic matter in turbidite deposits from the Madeira Abyssal Plain[J].Organic Geochemistry,1997,27(3/4):141-152.
[25]	Damsté J S S,Rijpstra W C,Reichart G.The influence of oxic degradation on the sedimentary biomarker record II. Evidence from Arabian Sea sediments[J].Geochimica et Cosmochimica Acta,2002,66(15):2737-2754.
[26]	Scott A C.Charcoal recognition,taphonomy and uses in palaeoenvironmental analysis[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2010,291(1/2):11-39.
[27]	Hartmann J,Jansen N,Dürr H H,et al.Global CO₂-consumption by chemical weathering:What is the contribution of highly active weathering regions?[J].Global and Planetary Change,2009,69(4):185-194.
[28]	秦建中.中国烃源岩[M].北京:科学出版社,2005. Qin Jianzhong.Chinese source rocks[M].Beijing:Science Press,2005.
[29]	廖昕,巫锡勇,朱宝龙.桂北地区寒武系黑色页岩化学风化特征[J].中南大学学报(自然科学版),2013,44(12):4980-4988. Liao Xin,Wu Xiyong,Zhu Baolong.Chemical weathering characteristics of Cambrian black shale in northern Guangxi,China[J].Journal of Central South University(Science and Technology),2013,44(12):4980-4988.
[30]	于炳松,陈建强,李兴武,等.塔里木盆地下寒武统底部黑色页岩地球化学及其岩石圈演化意义[J].中国科学(D辑),2002,32(5):374-383. Yu Bingsong,Chen Jianqiang,Li Xingwu,et al.Geochemistry of black shale at the bottom of the Lower Cambrian in Tarim Basin and its significance for lithosphere evolution[J].Science in China (Series D),2003,46(5):498-507.
[31]	于炳松,Dong Hailiang,陈建强,等.塔里木盆地下寒武统底部高熟海相烃源岩中有机质的赋存状态[J].地球科学,2004,29(2):198-202. Yu Bingsong,Dong Hailiang,Chen Jianqiang,et al.Occurrence of high mature organic matter in marine black shale source rocks of Lower Cambrian from northern Tarim Basin,China[J].Earth Science,2004,29(2):198-202.
[32]	孙省利,陈践发,郑建京,等.塔里木下寒武统富有机质沉积层段地球化学特征及意义[J].沉积学报,2004,22(3):547-552. Sun Xingli,Chen Jianfa,Zheng Jianjing,et al.Geochemical characteristics of organic matter-rich sedimentary strata in Lower Cambrian,Tarim Basin and its origins[J].Acta Sedimentologica Sinica,2004,22(3):547-552.
[33]	孙省利,陈践发,刘文汇,等.塔里木盆地下寒武统硅质岩地球化学特征及其形成环境[J].石油勘探与开发,2004,31(3):45-48. Sun Xingli,Chen Jianfa,Liu Wenhui,et al.Geochemical characteristics of cherts of Lower Cambrian in the Tarim Basin and its implication for environment[J].Petroleum Exploration and Development,2004,31(3):45-48.
[34]	Dinh H T,Kuever J,Mußmann M,et al.Iron corrosion by novel anaerobic microorganisms[J].Nature,2004,427(6977):829-832.
[35]	李庆,胡文瑄,张军涛,等.塔里木盆地西北缘中寒武统硅质岩特征与形成环境[J].矿物学报,2010,30(3):293-303. Li Qing,Hu Wenxuan,Zhang Juntao,et al.Petrological and geochemical characteristics of chert from the Middle Cambrian in the Tarim Basin and its implication for sedimentary and tectonic environments[J].Acta Mineralogica Sinica,2010,30(3):293-303.