| 黄骅坳陷孔店南区低熟油伴生气地球化学特征与成因 |
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| 引用本文： | 王万春,任军虎,张小军,陶明信.黄骅坳陷孔店南区低熟油伴生气地球化学特征与成因[J].天然气地球科学,2006,17(2):153-156. |
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| 作者姓名： | 王万春 任军虎 张小军 陶明信 |
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| 作者单位： | (1.中国科学院地质与地球物理研究所气体地球 化学重点实验室，甘肃 兰州 730000；2.中国科学院研究生院，北京 100039) |
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| 基金项目： | 科技部科研项目;中国科学院资助项目 |
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| 摘 要： | 对黄骅坳陷孔店南区低熟原油及其伴生气进行了饱和烃色-质分析、天然气组分分析和气体组分的碳、氢同位素分析,结果表明:天然气甲、乙、丙烷的组分含量分别在37.99%~68.89%、1.82%~6.01%和0.83%~3.43%之间,甲、乙、丙烷和正丁烷的1δ3C值分别在-45.8‰~-40.8‰-、27.6‰~-25.3‰-、29.2‰~-26.9‰和-28.9‰~-27.7‰之间,甲、乙、丙烷的δD值分别在-254‰~-202‰-、204‰~-180‰-、208‰~-178‰之间;3个样品乙烷、丙烷和正丁烷的1δ3C值均发生了倒转,即1δ3C2>1δ3C3>1δ3CnC4,1个样品甲、乙、丙烷氢同位素组成也发生了倒转,原油生物标志物特征表明其为低成熟油OEP>1.22,T s/(Ts+Tm)<0.30,20S/(20S+20R)C29甾烷<0.28]。结合该区油气生成的地质背景特征,认为所研究低熟油伴生气为本区低成熟烃源岩(下第三系孔店组二段)所生天然气与成熟烃源岩(上古生界石炭-二叠系)所生天然气的混合气。
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| 关 键 词： | 原油伴生气 碳同位素 氢同位素 生物标志化合物 黄骅坳陷 |
| 文章编号： | 1672-1926（2006）02-0153-04 |
| 收稿时间： | 2005-10-11 |
| 修稿时间： | 2005-10-112006-02-15 |
GEOCHEMICAL CHARACTERISTICS AND ORIGIN OF LOW-MATURE OIL-ASSOCIATED GASES FROM SOUTH REGION OF KONGDIAN,HUANGHUA DEPRESSION |
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| WANG Wan-chun,REN Jun-hu,ZHANG Xiao-jun,TAO Ming-xin.GEOCHEMICAL CHARACTERISTICS AND ORIGIN OF LOW-MATURE OIL-ASSOCIATED GASES FROM SOUTH REGION OF KONGDIAN,HUANGHUA DEPRESSION[J].Natural Gas Geoscience,2006,17(2):153-156. |
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| Authors: | WANG Wan-chun REN Jun-hu ZHANG Xiao-jun TAO Ming-xin |
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| Affiliation: | (1.Key laboratory of gas Geochemistry, Institute of Geolo gy and Geophysics, Chinese Academy of Sciences,Lanzhou 730000, China; 2. Gradu ate School of Chinese Academy of Sciences, Beijing 100039, China) |
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| Abstract: | GC-MS analyses were made on saturated hydrocarbons of low mature oil samples,chemical composition analyses and carbon and hydrogen isotopic composition analyses were made on natural gas samples of the south region of Kongdian,Huanghua Depression.The components of methane,ethane and propane of natural gases are from 37.99 to 68.89%,1.82 to 6.01% and 0.83% to 3.43% respectively.The carbon isotopic compositions of methane,ethane,propane and normal butane are from-45.8‰ to(-40.8‰),-27.6‰ to-25.3‰,-29.2‰ to-26.9... |
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| Keywords: | Oil associated gas Carbon isotope Hydrogen isotope Biomarker compounds Huanghua depression |
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