莺歌海盆地海相生物气特征及生化成气模式

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莺歌海盆地海相生物气特征及生化成气模式

黄保家, 肖贤明

文章导航 > 沉积学报 > 2002 > 20(3): 462-468

黄保家, 肖贤明. 莺歌海盆地海相生物气特征及生化成气模式[J]. 沉积学报, 2002, 20(3): 462-468.

引用本文:

黄保家, 肖贤明. 莺歌海盆地海相生物气特征及生化成气模式[J]. 沉积学报, 2002, 20(3): 462-468.

HUANG Bao-jia, XIAO Xian-ming. Characteristics and Generation-Evolution Model of Marine Biogas in the Yinggehai Basin[J]. Acta Sedimentologica Sinica, 2002, 20(3): 462-468.

Citation:

HUANG Bao-jia, XIAO Xian-ming. Characteristics and Generation-Evolution Model of Marine Biogas in the Yinggehai Basin[J]. Acta Sedimentologica Sinica, 2002, 20(3): 462-468.

黄保家, 肖贤明. 莺歌海盆地海相生物气特征及生化成气模式[J]. 沉积学报, 2002, 20(3): 462-468.

引用本文:

黄保家, 肖贤明. 莺歌海盆地海相生物气特征及生化成气模式[J]. 沉积学报, 2002, 20(3): 462-468.

HUANG Bao-jia, XIAO Xian-ming. Characteristics and Generation-Evolution Model of Marine Biogas in the Yinggehai Basin[J]. Acta Sedimentologica Sinica, 2002, 20(3): 462-468.

Citation:

HUANG Bao-jia, XIAO Xian-ming. Characteristics and Generation-Evolution Model of Marine Biogas in the Yinggehai Basin[J]. Acta Sedimentologica Sinica, 2002, 20(3): 462-468.

莺歌海盆地海相生物气特征及生化成气模式

中国科学院广州地球化学研究所,广州,510640

作者简介:
黄保家,男,1960年出生,高级工程师,博士研究生,有机地球化学

中图分类号: P593;TE122.1⁺1

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文章访问数: 504
HTML全文浏览量: 16
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被引次数: 0

Characteristics and Generation-Evolution Model of Marine Biogas in the Yinggehai Basin

State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences, Guangzhou,510640

摘要: 莺歌海盆地浅层第四系-上新统存在丰富的生物气资源,已发现生物气的组成以甲烷和氮为主、干燥系数高达0.99,甲烷碳同位素轻(-65.57‰～-63.14‰)尤其是氢同位素偏重(-172.1‰～-108.5‰)是该区生物气的重要特点.研究表明,该区第四系-上新统海相沉积有机质是生物气的基质,这套源岩的平均有机碳含量约0.4%,有机质中细菌可利用基质以粗纤维、半纤维素和蛋白质为主,特别是有机质生化代谢过程中的中间产物-氨基酸、乙酸含量异常高,揭示其正处在活跃的生化成气时期;根据模拟实验结果结合本区的地质条件,初步确定生物气生成的主带在35～65℃之间、生化成气下限深度约为85℃(对应井深约2000 m,实际埋深1900 m左右),进而建立了海相生物气的形成演化模式。
- 莺歌海盆地 /
- 海相生物气 /
- 主成气带 /
- 生物气模式
Abstract: There is great biogas potential in the Guaternary and Pliocene of the Yinggehai Basin. The compositions of gases f ound in the Basin are mainly methane and nitrogen. These biogases are characterized by high dry coefficients(C₁/C_1-5ratio)of 0.99, light carbon isotopes of methane(-65.57 %!-63.14 %）， especially heavy hydrogen isotopic values("Dc₁%）of -172. 1 %!-108. 5 %. Geochemical data show that the Guaternary and Pliocene mud has the meanTOC value of 0.4 % and contains abundant organic matter which can be degraded by bacteria. The organic matter mainly consists of coarse-fi ber,semi-fiber and protein.Noticeably,it contains a high content of amino acid that is an inter mediate product during the f or mation process of biogas. This indicates that the mudstone in the Guaternary and Pliocene of the Basin is f avourable to biogas f or mation and is good biogas sourcerock.The data of modeling eXperi ment,combined with the gas measurement log and geotemperat ure gradient data of the basin,can be used to predict that the main stage of bio-gas generation is bet ween 35 C and 65 C and the death temperat ure of bio-gases is about 85 C(eCuivalent with the burial depth of around 1 900 min the Basin）.Finally，we suggest the generation-evolution model of marine biogas in the Yinggehai basin.
- Yi nggehai /
- marine biogas /
- main stage of generating- biogas model of biogas generation /

参考文献(7)

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[3]	黄志龙,柳广弟,郝石生.东方1-1气田天然气运移地球化学特征[J].沉积学报,1997,15(2):66～69[Huang Zhilong,Liu Guangdi and Hao Shisheng.Geochemical characteristcs of gas migration in Dongfang 1-1 gas fiedld[J].Acta Sedimentologica Sinica,1997,15(2):66～69]
[4]	徐永昌,沈平,刘文汇,王万春.一种新的天然气成因类型--生物-热过度带气[J].中国科学通报B辑,1990,20(9):975～980[Xu Yongchang,Shen Ping,Liu Wenhui, et al.A new natural gas type-bio-thermogenic trasitional gas.Chinese Science Bulletin (B),1990,20(9):975～980]
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[6]	Whiticar W J, Faber E, Schoell M.Biogenic Methane Formatin in Marione and Freshwater Envirnments:CO2 Reduction vs Acetate Fermentation-lsotope Evidence[J]. Geochimica et Cosmochimica Acta, 1986,50:693～709
[7]	黄保家. 莺-琼盆地生物气及其聚集条件[A].见:戚厚发,关德师,张详,黄保家,钱贻伯等.中国生物气的成藏条件[C].北京:石油工业出版社,1997[Huang Baojia,Biogenic gase and its accumulation condition in Yinggehai-Qiongdongnan basins[A].In:Qi Haofa,Gan Desi,Zhang Xiang, et al.1997,Biogenic gas formation and accumulation in Chinese basins[C].Beijing:Petroleum Industry Press,1997]

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计量

文章访问数: 504
HTML全文浏览量: 16
PDF下载量: 272
被引次数: 0

莺歌海盆地海相生物气特征及生化成气模式

中国科学院广州地球化学研究所,广州,510640

作者简介:
黄保家,男,1960年出生,高级工程师,博士研究生,有机地球化学

收稿日期: 2001-07-30
修回日期: 2001-10-24

中图分类号: P593;TE122.1⁺1

关键词:

莺歌海盆地 /

海相生物气 /

生物气模式

摘要: 莺歌海盆地浅层第四系-上新统存在丰富的生物气资源,已发现生物气的组成以甲烷和氮为主、干燥系数高达0.99,甲烷碳同位素轻(-65.57‰～-63.14‰)尤其是氢同位素偏重(-172.1‰～-108.5‰)是该区生物气的重要特点.研究表明,该区第四系-上新统海相沉积有机质是生物气的基质,这套源岩的平均有机碳含量约0.4%,有机质中细菌可利用基质以粗纤维、半纤维素和蛋白质为主,特别是有机质生化代谢过程中的中间产物-氨基酸、乙酸含量异常高,揭示其正处在活跃的生化成气时期;根据模拟实验结果结合本区的地质条件,初步确定生物气生成的主带在35～65℃之间、生化成气下限深度约为85℃(对应井深约2000 m,实际埋深1900 m左右),进而建立了海相生物气的形成演化模式。

English Abstract

黄保家, 肖贤明. 莺歌海盆地海相生物气特征及生化成气模式[J]. 沉积学报, 2002, 20(3): 462-468.

引用本文:

黄保家, 肖贤明. 莺歌海盆地海相生物气特征及生化成气模式[J]. 沉积学报, 2002, 20(3): 462-468.

HUANG Bao-jia, XIAO Xian-ming. Characteristics and Generation-Evolution Model of Marine Biogas in the Yinggehai Basin[J]. Acta Sedimentologica Sinica, 2002, 20(3): 462-468.

Citation:

HUANG Bao-jia, XIAO Xian-ming. Characteristics and Generation-Evolution Model of Marine Biogas in the Yinggehai Basin[J]. Acta Sedimentologica Sinica, 2002, 20(3): 462-468.

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