Geochemical Characteristics of Steranes of Coal Generated Hydrocarbons: A Case of High Temperature and Fined Simulated Experiment

Sun Tao, Duan Yi

doi:10.11764/j.issn.1672-1926.2011.06.1082

2011 , Vol. 22 >Issue 6: 1082 - 1087

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.06.1082

Geochemical Characteristics of Steranes of Coal Generated Hydrocarbons: A Case of High Temperature and Fined Simulated Experiment

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1.School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China;
2.Key Laboratory of Petroleum Resources Research,Institute of Geology and Geophysics, Chinese Academy of Sciences,Lanzhou 730000,China;

Received date: 2011-06-30

Revised date: 2011-08-26

Online published: 2011-12-10

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Abstract

Peat and coal are selected to do simulation experiment in order to understand characteristics of hydrocarbon generation from coal.According to GC-MS analysis for soluble organic matters extracted from simulated products of peat and coal in closed system pyrolysis,the abundance of steranes in the saturated hydrocarbon fractions with the maximum intensities of C₂₉-regular steranes is observed,reflecting that the terrestrial higher plants are main parent materials.The relative content of C₂₉-regular steranes decreases with simulated temperature increase,and become little variation,suggesting that the thermal maturity should be considered when the relative content of regular steranes is used to identify source material.C₂₉ sterane-20S/(20S+20R) and C₂₉sterane-C₂₉ββ/(ββ+αα) is a selected parameter for identifying the mature or immature organic matter.∑diasteranes/∑regular-sterane is also a maturity parameter.The experimental results show that the simulation curve of peat and coal is different at low mature stage,and become similar at high mature stage.So,it is meaningful to understand the hydrocarbon generation from peat to coal by contrast simulated experiment.

Key words： Sterane; Peat; Coal; Thermal maturity.

Cite this article

Sun Tao, Duan Yi . Geochemical Characteristics of Steranes of Coal Generated Hydrocarbons: A Case of High Temperature and Fined Simulated Experiment[J]. Natural Gas Geoscience, 2011 , 22(6) : 1082 -1087 . DOI: 10.11764/j.issn.1672-1926.2011.06.1082

References

［1］Alomon W R,Johns W D.Petroleum forming reactions:The mechanism and rate of clay catalyzed fatty acid decarboxiolation［J］.Advance of Organic Geochemistry,1975:157-170.
［2］Vassayevich N B.The role of clays in oil formation［J］.Internet Geology Review,1976,18(2):125-134.
［3］
[JP2]Behar F,Vandenbroucke M,Tang Y,et al.Thermal cracking of kerogen in open and closed systems:Determination of kinetic parameters and stoichiometric coefficient for oil and gas generation［J］.Organic Geochemistry,1997,26(5/6) :321-339.
［4］
[JP2]Ma Suping,He Jianqiao,Tang Wei,et al.The influence of high-pressure autoclave on hydrogen product during hydrous simulation experime［J］.Acta Sedimentologica Sinica,2003,4(21):713-716.［马素萍,贺建桥,汤渭,等.高压釜对加水模拟实验中氢产物的影响［J］.沉积学报,2003,4(21):713-716.］
［5］Xia Yanqing,Luo Binjie.Study on steroids in Tertiary wood coal from Nanning basin by thermal-modelling experiments［J］.Experimental Petroleum Geology,1995,17(3):301-309.［夏燕青,罗斌杰.南宁盆地第三系木质褐煤中甾类化合物热模拟实验研究［J］.石油实验地质,1995,17(3):301-309.］
［6］Ying Guangguo,Zhang Baisheng,Ji Limin.Study on thermal simulated peat:A discussion on the genetic mechanism of transitional zone gas［J］.Acta Sedimentologica Sinica,1995,13(2):44-47.［应光国,张柏生,吉利民.泥炭的热模拟研究—过渡带气形成机理探讨［J］.沉积学报,1995,13(2):44-47.］
［7］Duan Yi,Zhou Shixin.Study on thermal simulation of carboniferous source rocks in Tarim basin:Ⅱ composition and evolution of biomakers［J］.Oil and Gas Geology,2001,22(1):13-16.［段毅,周世新.塔里木盆地石炭系烃源岩热模拟实验研究—Ⅱ生物标志化合物的组成和演化［J］.石油与天然气地质,2001,22(1):13-16.］
［8］Zheng Jianjing,Wen Deshun,Meng Qianxiang,et al.Characteristics of geochemical parameters of coal measures source rock in the thermal simulation experiment［J］.Natural Gas Geoscience,2003,14(2):134-139.［郑建京,温德顺,孟仟祥,等.煤系烃源岩热模拟演化过程的地球化学参数特征——以准噶尔盆地侏罗系煤系烃源岩为例［J］.天然气地球科学,2003,14(2):134-139.］
［9］Gao Gang,Jiang Zhenxue,Zhao Zhe,et al.Influence of temperature increase veocity to the hydrocarbon formation of source rock by hydropyrolysis［J］.Natural Gas Geoscience,2004,15(5):461-464.［高岗,姜振学,赵喆,等.加水模拟条件下升温速率对烃源岩成烃特征的影响［J］.天然气地球科学,2004,15(5):461-464.］
［10］Wu Baoxiang,Duan Yi,Wang Chuanyuan,et al.Thermal simulation of peat as an original matter of coal generation and its application to the study of coalbed gas［J］.Coal Geology & Exploration,2005,33(2):21-25.［吴保祥,段毅,王传远,等.泥炭的热模拟实验及其在煤层气研究中的应用［J］.煤田地质与勘探,2005,33(2):21-25.］
［11］Wu Baoxiang,Duan Yi,Sun Tao,et al.A simulation study on the composition and evolution of thermogenic coalbed gas［J］.Natural Gas Industry,2010,30(5):129-132.［吴保祥,段毅,孙涛,等.热成因煤层气组成与演化模拟［J］.天然气工业,2010,30(5):129-132.］
［12］Philp R P.Fossil Fuel Biomarkers［M］.New York:Elsevier,1985:1-294.
［13］Fan P,Li J.Characteristics of the biomarkers from nonmarine crude oils in China:A review［J］.Chinese Journal of Geochemistry,1991,10 (2):131-139.
［14］Fan Pu,Ma Baolin.Tarim Petroleum Geology［M］.Beijing:Science Press,1990:1-258.［范璞,马宝林.塔里木油气地质［M］.北京:科学出版社,1990:1-258.］
［15］Peters K E,Moldowan J M.Interpreting Molecular Fossils in Petroleum and Ancient Sediments［M］.Prentice Hall,Inc.,1993:1-236.
［16］Wang Chunjiang,Luo Binjie,Zheng Guodong,et al.Organic geochemical characteristics and genesis of crude oils from the Turpan basin［J］.Acta Sedimentologica Sinica,1993,11(3):72-81.［王春江,罗斌杰,郑国东,等.吐鲁番盆地原油成因及地球化学特征［J］.沉积学报,1993,11(3):72 -81.］
［17］Huang Difan,Qin Kuangzong,Wang Tieguan,et al.Oil from Coal:Formation and Mechanism［M］.Beijing:Petroleum Industry Press,1995:425.［黄第藩,秦匡宗,王铁冠,等.煤成油的形成和成烃机理［M］.北京:石油工业出版社,1995:425.］
［18］
[JP2]Cheng Keming,Zhao Changyi,Su Aiguo,et al.A study of geological and geochemical conditions for coal-derived oil and gas formation in Turpan-Hami basin［J］.Petroleum Explorationist,1997,2(2):5-10.［程克明,赵长毅,苏爱国,等.吐哈盆地煤成油气的地质地球化学研究［J］.勘探家,1997,2(2):5-10.］
［19］Liu Quanyou,Liu Wenhui,Meng Qianxiang.Geochemical characteristics of steranes in saturated hydrocabons from coal and exinite in pyrolysis under closed systems［J］.Natural Gas Geoscience,2007,18(2):249-253.［刘全有,刘文汇,孟仟祥.热模拟实验中煤岩及显微组分饱和烃甾烷系列化合物有机地球化学特征［J］.天然气地球科学,2007,18(2):249-253.］
［20］Mackenzie A S,Patience R L,Maxwell J R,et al.Molecular parameters of maturation in the Toarcian shales,Paris,France I:Changes in the configuration of the acyclic isoprenoid alkanes,steranes and triterpanes［J］.Geochimicaet Cosmochimica Acta,1980,44:1709-1721.
［21］Seifert W K,Moldowan J M.Use of biological markers in petroleum exploration［J］.Methods in Geochemistry and Geophysics,1986,24:261-290.
［22］
[JP2]Huang Difan,Li Jinchao,Zhang Dajiang,et al.Maturation sequence of continental crude oils in Qaidam basin and its significance ［J］.Acta Petroei Sinica,1989,10(3):1-11.［黄第藩,李晋超,张大江,等.柴达木盆地第三系原油的熟化序列及其在石油资源预测中的重要意义［J］.石油学报,1989,10(3):1-11.］

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