天然气地球化学

塔里木盆地台盆区油型气轻烃组成及应用

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  • 1.中国石油勘探开发研究院,北京 100083;2.中国矿业大学,北京 100083;
    3.中国石油勘探开发研究院廊坊分院,河北 廊坊 065007
于聪1987-,女,吉林长春人,博士研究生,主要从事天然气地质与地球化学研究. E-mail:yucongcong1234@163.com.

收稿日期: 2013-01-28

  修回日期: 2013-05-13

  网络出版日期: 2013-08-10

基金资助

国家自然科学基金项目编号:41272166资助.
 

The Characteristics of Light Hydrocarbon in Oil-associated Gasand Its Application in Platform Area of Tarim Basin

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  • 1.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;
    2.China University of Mining & Technology,Beijing 100083,China;
    3.Research Institute of Petroleum Exploration and Development,PetroChina Company Limited,Langfang 065007,China

Received date: 2013-01-28

  Revised date: 2013-05-13

  Online published: 2013-08-10

摘要

采用PY-GC热模拟实验方法对塔里木盆地塔中地区海相烃源岩轻烃生成模式及热解气单体烃碳同位素进行研究,实验结果表明:轻烃大量生成在RO值为1.3%~1.9%阶段;在各类化合物组成中,链烷烃含量最高,环烷烃和芳烃含量比较接近;热解气苯和甲苯碳同位素值一般小于-25‰,环己烷和甲基环己烷碳同位素值小于-24.1‰。对塔里木盆地台盆区油型气轻烃组分及碳同位素组成分析认为,油型天然气轻烃组成以链烷烃为主,占45.4%~93.7%,平均为70.1%,其次是环烷烃,分布在5.4%~40.6%之间,平均为23.4%,芳烃含量较低;苯碳同位素值分布在-23.7‰~-28.6‰之间,甲苯碳同位素值分布在-23.7‰~-29.5‰之间,天然气中环己烷和甲基环己烷碳同位素值明显低于前陆区,一般都小于-26‰。结合塔中地区天然气碳同位素组成特征,对塔中地区气源进行了探讨。
 

本文引用格式

于聪,田兴旺,李谨 . 塔里木盆地台盆区油型气轻烃组成及应用[J]. 天然气地球科学, 2013 , 24(4) : 774 -783 . DOI: 10.11764/j.issn.1672-1926.2013.04.774

Abstract

Pyrolysis-GC thermal simulation experiment has been performed on the light hydrocarbon generated from the marine source rocks of central Tarim Basin,China and the monomer hydrocarbon isotope.It is concluded that the main generation stage of light hydrocarbon occurred when the RO ranges from 1.3% to 1.9%.The branch alkanes are the principal components among all the compounds with the abundance of naphthenes and aromatics being relatively close.Relatively lower carbon isotopic values have been observed in benzene and toluene which are lower than -25‰ in general.Carbon isotopic values of cyclohexane and methylcyclohexane are generally lower than -24.1‰,which are also quite low.According to the analysis of the composition and carbon isotope of the light hydrocarbon of the oil-associated gas in Tarim Basin,it is concluded that it is mainly composed of the branch alkanes which accounts for from 45.4% to 93.7% with an average of 70.1%.The proportion of naphthenes is from 5.4% to 40.6% with an average of 23.4%,with that of aromatics being at a low level.The carbon isotopic values of benzene and toluene range from -23.7‰ to -28.6‰ and from -23.7‰ to -29.5‰,respectively.The carbon isotopic values of cyclohexane and methylcyclohexane are lower than -26‰,which are obviously lower than those from the foreland basin in Tarim Basin.In addition,gas-source correlation of the gases in central Tarim Basin has been discussed in this paper based on the carbon isotopic analysis.

参考文献

[1]Jia Chengzao.Structure Characteristics,Oil,and Gas in Tarim Basin,China[M].Beijing:Petroleum Industry Press,1997.[贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997.]

[2]Li Jian,Chen Mengjin,Jiang Zhusheng,et al.Gas-source Correlation in the Tazhong region,Tarim Basin[J].Petroleum Exploration and Development,1999,266:33-35.[李剑,陈孟晋,蒋助生,等.塔里木盆地塔中地区天然气气源对比[J].石油勘探与开发,1999,266:33-35.]

[3]Qin Shengfei,Li Xianqi,Xiao Zhongyao,et al.Geochemistry,origin and distribution of natural gases in Tarim Basin,NW China[J].Petroleum Exploration and Development,2005,324:70-78.[秦胜飞,李先奇,肖中尧,等.塔里木盆地天然气地球化学及成因与分布特征[J].石油勘探与开发,2005,324:70-78.]

[4]Xiao Zhongyao,Cui Huiying,Xie Zengye,et al.Gas geochemical characteristics of platform-basin region in Tarim Basin[J].Natural Gas Geoscience,2007,186:782-788.[肖中尧,崔会英,谢增业,等.塔里木盆地台盆区天然气地球化学特征[J].天然气地球科学,2007,186:782-788.]

[5]Hu Guoyi,Xiao Zhongyao,Luo Xia,et al.The differences between the light hydrocarbons of two cracked gases and its application[J].Natural Gas Industry,2005,259:23-25.[胡国艺,肖中尧,罗霞,等.两种裂解气中轻烃组成差异性及其应用[J].天然气工业,2005,259:23-25.]

[6]Chen Jianfa,Miao Zhongying,Zhang Chen,et al.Geochemical characteristics of light hydrocarbons in natural gas in the Tabei Uplift of the Tarim Basin and their implications[J].Natural Gas Industry,2010,313:271-276.[陈践发,苗忠英,张晨,等.塔里木盆地塔北隆起天然气轻烃地球化学特征及应用[J].天然气工业,2010,313:271-276.]

[7]Xie Zengye,Jiang Zhusheng,Zhang Ying et al.Novel method of whole rock pyrolysis and application to the evaluation of source rock[J].Acta Sedimentologica Sinica,2002,203:510-514.[谢增业,蒋助生,张英,等.全岩热模拟新方法及其在气源岩评价中的应用[J].沉积学报,2002,203:33-35.]

[8]Tissot B P,Welte D H.Petroleum Formation and Occurrence:A New Approach to Oil and Gas Exploration[M].New York:Springer Verlag,1978:50-70.

[9]Jiang Zhusheng,Luo Xia,Li Zhisheng,et al.Carbon isotope composition of benzene and toluene as a new index for correlation of gases with their source rocks[J].Geochimica,2000,4:410-415.[蒋助生,罗霞,李志生,等.苯、甲苯碳同位素组成作为气源对比新指标的研究[J].地球化学,2000,4:410-415.]

[10]Li Jian,Luo Xia,Li Zhisheng,et al.New issue of carbon isotope composition of toluene to be as index of gas-rock correlation[J].Natural Gas Geoscience,2003,143:177-180.[李剑,罗霞,李志生,等.对甲苯碳同位素值作为气源对比指标的新认识[J].天然气地球科学,2003,143:177-180.]

[11]Hu Guoyi,Li Jian,Li Jin,et al.Preliminary study on the origin identification of natural gas by the parameters of light hydrocarbon[J].Science in China:Series D,2008,51supplement:131-139.

[12]Leythaeuser D,Schaefer R G,Cornford C.Generation and migration of light hydrocarbon C2-C7 in sedimentary basin[J].Organic Geochemistry,1979,1:191-204.

[13]Dai Jinxing.Identification and distinction of various alkane gases[J].Science in China:Series B,1992,222:185-193.[戴金星.各类烷烃气的鉴别[J].中国科学:B辑,1992,222:185-193.]

[14]Snowdon L R,Powell T G.Immature oil and condensate-Modification of hydrocarbon generation model for terrestrial organic matter[J].AAPG Bulletin,1982,666:775-788.

[15]Liao Yongsheng.Light Hydrocarbons and Carbon Isotopes of Canned Cuttings in Oil and Gas Exploration[C\]//Symposium of Natural Gas Geology.Beijing:Petroleum Industry Press,1989.[廖永胜.罐装岩屑轻烃和碳同位素在油气勘探中的应用\[C\]//天然气地质研究论文集.北京:石油工业出版社,1989.]

[16]Hu Tilin,Ge Baoxiong,Zhang Yigang,et al.The development and application of fingerprint parameters for hydrocarbons absorbed by source rocks and light hydrocarbons in natural gas[J].Petroleum Geology & Experiment,1990,124:375-379.[胡惕麟,戈葆雄,张义纲,等.源岩吸附烃和天然气轻烃指纹参数的开发应用[J].石油实验地质,1990,124:375-379.][17]Hu Guoyi,Xiao Zhongyao,Luo Xia,et al.Light hydrocarbon composition difference between two kinds of cracked gases and its application[J].Natural Gas Industry,2005,259:23-25.[胡国艺,肖中尧,罗霞,等.两种裂解气中轻烃组成差异性及其应用[J].天然气工业,2005,259:23-25.]

[18]Guo Jianjun,Chen Jianfa,Zhu Lei,et al.Geochemical characteristics and genesis of the natural gas in the Tazhong Uplift,the Tarim Basin[J].Petroleum Geology & Experiment,2007,296:577-582.[郭建军,陈践发,朱雷,等.塔里木盆地塔中天然气的地球化学特征及其成因[J].石油实验地质,2007,296:577-582.]

[19]Han Jianfa,Mei Lianfu,Yang Haijun,et al.Non-hydrocarbon origin of Ordovician natural gas in Tazhong of Tarim Basin and its implications for non-hydrocarbon accumulation[J].Earth Science Frontiers,2009,161:314-325.[韩剑发,梅廉夫,杨海军,等.塔里木盆地塔中奥陶系天然气的非烃成因及其成藏意义[J].地学前缘,2009,161:314-325.]

[20]Li Pengchun,Chen Guanghao,Meng Qingren,et al.Geochemistry of Ordovicial natural gases and its origin and distribution in central Tarim Basin,China[J].Natural Gas Geoscience,2010,212:321-330.[李鹏春,陈广浩,孟庆任,等.塔中地区奥陶系天然气地球化学及成因与分布特征[J].天然气地球科学,2010,212:321-330.]

[21]Tian Hui,Xiao Xianming,Ronald W T,et al.Generic origins of marine gases in the Tazhong area of the Tarim Basin,NW China:Implications from the pyrolysis of marine kerogens and crude oil[J].International Journal of Coal Geology,2010,821/2:17-26.

[22]Zhao Mengjun,Zhang Baomin,Xiao Zhongyao,et al.Similar humic source rocks of Ordovician in the Tarim Basin[J].Natural Gas Industry,1998,185:32-36.[赵孟军,张宝民,肖中尧,等.塔里木盆地奥陶系偏腐殖型烃源岩的发现[J].天然气工业,1998,185:32-36.]

[23]Hu Guoyi,Li Jin,Shan Xiuqin,et al.The origin of natural gas and the gydrocarbon charging history of the Yulin Gas Field in the Ordos Basin,China[J].International Journal of Coal Geology,2010,81:381-391.

[24]Hu Guoyi,Zhang Shuichang.Characterization of low molecular weight hydrocarbons in Jinbian  Gas Field and its application to gas gsources identification[J].Energy Exploration & Exploitation,2011,296:777-796.

[25]Dai Jinxing,Ni Yunyan,Zou Caineng.Stable carbon and hydrogen isotopes of natural gased sourced from the Xujiahe Formation in the Sichuan Basin,China[J].Organic Geochemistry,2012,43:103-111.

[26]Dai Jinxing,Chen Jianfa,Zhong Ningning,et al.Large Natural Gas Fields and Their Gas Sources[M].Beijing:Science Press,2003:93-136.[戴金星,陈践发,钟宁宁,等.中国大气田及其气源[M].北京:科学出版社,2003:93-136.]

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