CAI Jingong, SONG Mingshui, LU Longfei, BAO Yujin, DING Fei, XU Jinli. ORGANO-CLAY COMPLEXES IN SOURCE ROCKS——A NATURAL MATERIAL FOR HYDROCARBON GENERATION[J]. Marine Geology & Quaternary Geology, 2013, 33(3): 123-131. DOI: 10.3724/SP.J.1140.2013.03123
Citation: CAI Jingong, SONG Mingshui, LU Longfei, BAO Yujin, DING Fei, XU Jinli. ORGANO-CLAY COMPLEXES IN SOURCE ROCKS——A NATURAL MATERIAL FOR HYDROCARBON GENERATION[J]. Marine Geology & Quaternary Geology, 2013, 33(3): 123-131. DOI: 10.3724/SP.J.1140.2013.03123
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ORGANO-CLAY COMPLEXES IN SOURCE ROCKS——A NATURAL MATERIAL FOR HYDROCARBON GENERATION

  • 1. The State Key Laboratory of Marine Geology, Tongji university, Shanghai 200092, China;

  • 2. Geological Scientific Research Institute, Shengli Oil field Company, SINOPEC, Dongying 257000, China;

  • 3. Wuxi Institute of Petroleum Geology, SINOPEC, Wuxi 214151, China

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  • Received Date: May 07, 2012
  • Revised Date: November 19, 2012
    Graphical Abstract
    • Abstract
  • Traditionally, it is believed that kerogen, a organic matter insoluble in organic solvents separated chemically from source rock, is a material for hydrocarbon generation[1].The procedure to treat samples as such, however, may destroy the original occurrence and relationship between organic matter and clay in source rocks. We extracted an organo-clay complex (<2μm) from the crushed source rocks in the depth of 280~3 500 m, in the Jiyang sag, East China. The complex is mainly composed of layered illite-smectite (I-S) and illite with a value of TOC up to 2.62%~9.78%. After treatment with H2O2, TOC remains as high as 1.23%~4.63%, suggesting that it is the components in which organic matters are enriched. The diffraction peak (d001) of the complex is 1.3~1.4nm at 250℃, and moves to 1.0 nm at 550℃ in XRD curves, and the exothermic peaks of the complex is extraordinary stable at 350℃ in DTA curves.; The result is consistent in both the XRD and DTA observations. It indicates that organic matter can enter the interlayer space of clay minerals. With PY-GC analysis, the organic matter of C5 and C25 is released from the complex in a temperature range of 250~650℃, and reaches a peak at about 450℃. Our findings reveal that organic matter can enter interlayer of clay minerals forming a kind of natural and highly stable organo-clay complex, and the composition of the organic matter in the complex is similar to the crude oil. As a kind of natural material, the organo-clay complex plays an important role in hydrocarbon generation in source rocks.
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    • References (32)
  • [1]
    Tissot B P,Welte D H. Ptroleum Formation and Occurrence(second edition)[M].New York:Springer-Verlag,1984.
    [2]
    Weaver C E. Possible uses of clay minerals in research for oil[J]. AAPG Bull., 1960,44(9):1505-1578.
    [3]
    Hunt J M. Petroleum Geochemistry and Geology(second edition)[M]. New York:W H Freeman and company,1996.
    [4]
    Seewald J S.Organic-inorganic interactions in petroleum-producing sedimentary basins[J]. Nature, 2003, 426(20):327-333.
    [5]
    Keil R G,Hedges J I.Sorption of organic matter to mineral surfaces and the preservation of organic matter in coastal marine sediments[J]. Chemical Geology, 1993,107:385-388.
    [6]
    Bergamaschi B A, Tsamakis E, Keil R G, et al. The effect of grain size and surface area on organic matter, lignin and carbohydrate concentration, and molecular compositions in Peru Margin sediments[J]. Geochimica et Cosmochimica Acta, 1997, 61:1247-1260.
    [7]
    熊毅.土壤胶体(第一册)[M].北京:科学出版社,1983.[XIONG Yi.Soil Colloid (first vol)[M]. Beijing:Scienc Press, 1983.]
    [8]
    王行信,周书欣.有机黏土化学在油气生成研究中的意义[J].地质地球化学,1991,19(5):3-8.

    [WANG Xingxin,ZHOU Shuxin. A research significance for organo-caly chemistry in Petroleum formation[J]. Geology-Geochemistry, 1991,19(5):3-8.]
    [9]
    Kennedy M J, Pevear D R, Hill R H. Mineral surface control of organic carbon in black shale[J]. Science, 2002, 295:657-660.
    [10]
    蔡进功.泥质沉积物和泥岩中有机黏土复合体[M]. 北京:科学出版社,2004.[CAI Jingong. Organo-clay Complexes in Muddy Sediment and Muddy Rock[M]. Beijing:Science Press, 2004.
    [11]
    Weiler R R,Mills A A. Surface properties and pore structure of marine sediments[J]. Deep Sea Research, 1965,12:511-529.
    [12]
    Suess E R. Interaction of organic compounds with calcium carbonate-Ⅱ[J]. Geochim et Cosmochim. Acta, 1973, 37:2435-2447.
    [13]
    Mayer L M.Surface area control of organic carbon accumulation in continental shelf sediments[J]. Geochimica et Cosmochimica Acta, 1994,58:1271-1284.
    [14]
    Mayer L M.Extent of coverage of mineral surfaces by organic matter in marine sediments[J]. Geochimica et Cosmochimica Acta, 1999.63:207-215.
    [15]
    Keil R G., Montlucon D B, Prahl F G, et al. Sorptive preservation of labile organic matter in marine sediments[J]. Nature, 1994c, 370:549-552.
    [16]
    Hedges J I,Keil R G.Sedimentary organic matter preservation:An assessment and speculative synthesis[J]. Marine Chemistry,1995,49:81-115.
    [17]
    Carter M R, Angers D A, Gregorich E G, et al. Characterizing organic matter retention for surface soils in eastern Canada using density and particle size fractions[J]. Can. J. Soil Sci., 2003,83(1):11-23.
    [18]
    Dexter A R, Richard G, Arrouays D, et al. Complexed organic matter controls soil physical properties[J]. Geoderma, 2008,(8):1-8.
    [19]
    Durand B. Kerogen-Insoluble Organic Matter from Sedimentary Rocks[M]. Paris:Editions Technip,1980.
    [20]
    傅家谟,秦匡宗.干酪根地球化学[M].广州:广东科技出版社,1995.[FU Jiamo,QIN Kuangzhong. Geochemical Characteristics of Kerogen[M]. Guangzhou:Guangdong science and Technology Press,1995.]
    [21]
    苗建宇,祝总祺, 刘文荣,等. 泥质岩有机质的赋存状态及其对泥岩封盖能力的影响[J].沉积学报,1999,7(3):1-5.

    [MIAO Jianyu, ZHU Zongqi, LIU Wenrong,et al. Occurrence of organic matter and its effect on sealing ability of argillaceous rock[J]. Acta Sedimentologica Sinica, 1999,7(3):1-5.]
    [22]
    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. High quality oil prone source rocks in Jiyang Depression[J].Geochimica,2003.32(1):35-42.]
    [23]
    Cai Jingong, Bao Yujin, Yang Shouye, et al, Research on preservation and enrichment mechanisms of organic matter in muddy sediment and mudstone[J]. Science in China (Series D),2007, 50(5):765-77.
    [24]
    Williama L B, Canfield B, Voglesonger K M,et al. Organic molecules formed in a ‘primordial womb’[J]. Geology, 2005,33(11):913-916.
    [25]
    格里姆R E著,许冀泉译. 黏土矿物学[M]. 北京:地质出版社,1960:83-103.[Grim R E.(translated by XU Jiquan). Clay Minerals[M]. Beijing:Geological Publishing House, 1960:83

    -103.]
    [26]
    Armstrong D E, Chesters G. Properties of protein-bentonite complexes as influenced by equilibration conditions[J]. Soil Sci., 1964, 98:39-52.
    [27]
    Perez Rodriguez J L, Weiss A, Lagaly G. A natural clay organic complex from Andalusian black earth[J]. Clays Clay Minerals, 1977,25:243-251.
    [28]
    Lagaly G.Characterization of clays by organic compounds[J]. Clay Minerals, 1981,16:1-21.
    [29]
    Zhu Jianxi, He Hongping, Guo Jiugao, et al. Arrangement models of alkylammonium cations in the interlayer of HDTMA+ pillared montmorillonites[J]. Chinese Science Bulletin, 2003,48(4):368-372.
    [30]
    Carrado K A. Synthetic organo-and polymer-clays:preparation characterization and materials applications[J]. Appl. Clay Sci., 2000,17:1-23.
    [31]
    Theng B K. Formation and Properties of Clay-Polymer Complexes[M]. Amsterdam:Elsevies, 1979.
    [32]
    Yariv S,Cross H. Organic-clay Complexes and Interaction[M]. New Nork:Marcel Dekker, 2002:39-174.
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