The Effect on the Geochemical Characteristics of Natural Gas by Filling Process

ZHAO Meng jun; PANG Wen qing; ZHANG Shui chang; HAN Jian fa

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ZHAO Meng jun, PANG Wen qing, ZHANG Shui chang, HAN Jian fa. The Effect on the Geochemical Characteristics of Natural Gas by Filling Process[J]. Acta Sedimentologica Sinica, 2004, 22(4): 683-688.

Citation:

ZHAO Meng jun, PANG Wen qing, ZHANG Shui chang, HAN Jian fa. The Effect on the Geochemical Characteristics of Natural Gas by Filling Process[J]. Acta Sedimentologica Sinica, 2004, 22(4): 683-688.

The Effect on the Geochemical Characteristics of Natural Gas by Filling Process

1.
Research Institute of Petroleum Exploration and Development of PetroChina, Beijing 100083;
2.
Talimu Oil Company of PetroChina, Korle, Xinjiang 841000

Received Date: 2004-01-05
Rev Recd Date: 2004-03-15
Publish Date: 2004-12-10

Abstract

The natural gases of Kela 2 and Ake 1 are similarly very "dry" in component and more "heavier" in carbon isotopes, such as dry coefficient (bulk ratio of methane to total hydrocarbons) of Kela 2 gas and Ake 1gas near 1.0, δ¹³ C₁ value (methane carbon isotopic ratio) from -27.3‰ to-31.1‰ for Kela 2 gas and from -21.9‰ to -25.2‰ for Ake 1gas. According to the data by traditional interpretation, the gases could derived measure strata source rock with over maturity. But, the maturity of the gases through calculation were much higher than the maturity of source rocks by determined or by basin analysis. So, when data of Kela 2 gas and Ake 1 gas are explained, the effect on the gases by filling process must be emphasized. In this paper, it is stated the main cause that the Kela 2 gas and Ake 1 gas tend to be dry and bear heavier isotope composition lies in the filling process with gas partial accumulation in late period.
- gas geochemistry,
- filling process,
- accumulation in late period,
- Kela-2 gas and Ake-1 gas,

References

[1]	Clayton C. Carbon isotope fractionation during natural gas generation from kerogen. Marine and Petroleum Geology, 1987,8: 232～240
[2]	Cramer B, Krooss B M and Littke R. Modelling isotope fractionation during primary cracking of natural gas: a reaction kinnetic approach. Chemical Geology, 1998, 149: 235～250
[3]	Bondar A D. Role of diffusion in differentiation of carbon isotopes of methane of the Earth's crust (in Russian). Geokhimiya, 126(3-4): 233～246
[4]	Krooss B M, Leythauser D, Schaefer R G G. The quantification of diffusive hydrocarbon losses through cap rocks of natural gas reservoirs-a reevaluation. AAPG Bulletin, 1992,76: 403～406
[5]	Krooss B M, Schlomer S, Schaefer R G G, and Littke R. Aspects of natural gas generation and migration in sedimentary systems. V.M. Goldschmidt conference 1998. Mineralogical Magazine, 1998,62: 818-819
[6]	戴金星,裴锡古,戚厚发. 中国天然气地质学. 北京:石油工业出版社, 1992. 10～15 [Dai Jinxing, Pei Xigu and Qi Houfa. Natural gas geology in China. Beijing: Petroleum Industry Press, 1992. 10～15]
[7]	徐永昌. 天然气成因理论及应用. 北京:科学出版社,1994. 84～102. [Xu Yongchang. The Theory of Natral Gas Generating and It's Application. Beijing: Science Press, 1994. 84～102]
[8]	付锁堂,冯乔,张文正. 鄂尔多斯盆地苏里格庙与靖边天然气单体碳同位素特征及其成因. 沉积学报,2003, 21(3):528～532[Fu Suotang, Feng Qiao, Zhang Wenzheng. Characteristics of the individual carbon isotope of natural gas from Suligemiao and Jingbian gas fields in Ordos Basin. Acta Sedimentologica Sinica, 2003, 21(3):528～532.]
[9]	夏新宇,赵林,戴金星, 等. 鄂尔多斯盆地中部气田奥陶系风化壳气藏天然气来源及混源比计算. 沉积学报, 1998, 16(3):75～78[Xia Xinyu, Zhao Lin, Dai Jinxing,et al. Gas sources and mixing ratio of Ordovician weathering crust reservoir of central gas field in Ordos Basin. Acta Sedimentologica Sinica, 1998,16(3):75～78]
[10]	张同伟,王先彬,陈践发,王雅丽. 天然气运移的气体组分的地球化学示踪. 沉积学报, 1999,17(4):627～632[Zhang Tongwei, Wang Xianbin, Chen Jianfa, Wang Yali. Chemical composition of gases as a geochenmical tracer of natural gas migration. Acta Sedimentologica Sinica, 1999,17(4):627～632]
[11]	Wang Zhaoming, Wang Tingdong, Xiao Zhongyao, Xu Zhiming, Li Mei and Lin Feng. Migration and accumulation of natural gas in Kela-2 gas field. Chinese Science Bulletin, 2002,47(Suppl.): 107～112
[12]	Zhao Mengjun, Lu Shuangfang, Wang Tingdong & Li Jian. Geochemical characteristics and formation process of natural gas in Kela 2 gas field. Chinese Science Bulletin, 2002, 47(Suppl.): 113～119
[13]	赵孟军,卢双舫,李剑. 库车油气系统天然气地球化学特征及气源探讨. 石油勘探与开发,2002, 48(6),4～7[Zhao Meng-jun, Lu Shangfang and Li Jian. The geochemical features of natural gas in Kuqa depression and the discussion on the gas source. Petroleum Exploration & Development, 2002, 48(6),4～7]
[14]	赵孟军,张宝民. 库车前陆坳陷形成大气区的烃源岩条件. 地质科学,2002, 37(增刊):35～44[Zhao Mengjun & Zhang Baomin. Source rocks for a giant gas accumulating area in the Kuqa foreland depression. Chinese Journal of Geology, 2002,37(Suppl.): 35～44]
[15]	赵孟军,夏新宇,秦胜飞, 等. 塔里木盆地阿克1井气藏气源研究. 天然气工业,2003,23(2):31～33[Zhao Mengjun, Xia Xinyu, Qin Shengfei,et al. Gas sources study of Ake Well 1 resource in Tarim Basin. Natural Gas Industry, 2003,23(2):31～33.]
[16]	戴金星,钟宁宁,刘德汉,等. 中国煤成大中型气田地质基础和主控因素. 北京:地质出版社, 2000. 11～23[Dai Jinxing, Zhong Ningning, Liu Dehan, et al. The Geological Base and Main Controlling Factors on the Large and Medium Coal Formed Gas Field. Beijing: Geological Publishing House,2000. 11～23]
[17]	贾承造,秦胜飞,李启明. 塔里木盆地库车坳陷油气的形成与分布. 见:戴金星,傅诚德,夏新宇主编. 煤成烃国际学术研讨会论文集. 北京:石油工业出版社,2000. 176～190[Jia Chengzao, Qin Shengfei and Li Qiming. Petroleum formation and occurrence in Kuche Depression of Tarim Basin. In: Dai Jinxing, Chengde and Xia Xinyu, eds. International Symposium on Hydrocarbon from Coal. Beijing:Petroleum Industry Press, 2000. 176～190]
[18]	戴金星,戚厚发. 我国煤成气的δ13C1-Ro关系. 科学通报,1989,34(9):265～269[ Dai Jinxing and Qi Houfa. The relationship of δ13C1-Ro of coal formed gas in China. Chinese Science Bulletin, 1989,34(9):265～269]
[19]	Rooney M A, Cloypool G E, Chung H M. Modeling thermogenic gas generation using carbon isotope ratios of natural gas hydrocarbons. Chemical Geology, 1995,126: 219～232
[20]	李慧莉,邱楠生,金之钧. 吕修祥.塔里木盆地克拉2气田储层流体包裹体与油气成藏研究. 沉积学报,2003,21(4):648～653[ Li Huili, Qiu Nansheng, Jin Zhijun, Lu Xiuxiang. Study on hydrocarbon entrapment in Kela 2 gas field, Tarim Basin-Evidence from reservoir fluid inclusion. Acta Sedimentologica Sinica, 2003,21(4):648～653]

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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The Effect on the Geochemical Characteristics of Natural Gas by Filling Process

1. Research Institute of Petroleum Exploration and Development of PetroChina, Beijing 100083;

2. Talimu Oil Company of PetroChina, Korle, Xinjiang 841000

Received Date: 2004-01-05

Rev Recd Date: 2004-03-15

Publish Date: 2004-12-10

Key words:

Abstract: The natural gases of Kela 2 and Ake 1 are similarly very "dry" in component and more "heavier" in carbon isotopes, such as dry coefficient (bulk ratio of methane to total hydrocarbons) of Kela 2 gas and Ake 1gas near 1.0, δ¹³ C₁ value (methane carbon isotopic ratio) from -27.3‰ to-31.1‰ for Kela 2 gas and from -21.9‰ to -25.2‰ for Ake 1gas. According to the data by traditional interpretation, the gases could derived measure strata source rock with over maturity. But, the maturity of the gases through calculation were much higher than the maturity of source rocks by determined or by basin analysis. So, when data of Kela 2 gas and Ake 1 gas are explained, the effect on the gases by filling process must be emphasized. In this paper, it is stated the main cause that the Kela 2 gas and Ake 1 gas tend to be dry and bear heavier isotope composition lies in the filling process with gas partial accumulation in late period.

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Reference (20)

[1]	Clayton C. Carbon isotope fractionation during natural gas generation from kerogen. Marine and Petroleum Geology, 1987,8: 232～240
[2]	Cramer B, Krooss B M and Littke R. Modelling isotope fractionation during primary cracking of natural gas: a reaction kinnetic approach. Chemical Geology, 1998, 149: 235～250
[3]	Bondar A D. Role of diffusion in differentiation of carbon isotopes of methane of the Earth's crust (in Russian). Geokhimiya, 126(3-4): 233～246
[4]	Krooss B M, Leythauser D, Schaefer R G G. The quantification of diffusive hydrocarbon losses through cap rocks of natural gas reservoirs-a reevaluation. AAPG Bulletin, 1992,76: 403～406
[5]	Krooss B M, Schlomer S, Schaefer R G G, and Littke R. Aspects of natural gas generation and migration in sedimentary systems. V.M. Goldschmidt conference 1998. Mineralogical Magazine, 1998,62: 818-819
[6]	戴金星,裴锡古,戚厚发. 中国天然气地质学. 北京:石油工业出版社, 1992. 10～15 [Dai Jinxing, Pei Xigu and Qi Houfa. Natural gas geology in China. Beijing: Petroleum Industry Press, 1992. 10～15]
[7]	徐永昌. 天然气成因理论及应用. 北京:科学出版社,1994. 84～102. [Xu Yongchang. The Theory of Natral Gas Generating and It's Application. Beijing: Science Press, 1994. 84～102]
[8]	付锁堂,冯乔,张文正. 鄂尔多斯盆地苏里格庙与靖边天然气单体碳同位素特征及其成因. 沉积学报,2003, 21(3):528～532[Fu Suotang, Feng Qiao, Zhang Wenzheng. Characteristics of the individual carbon isotope of natural gas from Suligemiao and Jingbian gas fields in Ordos Basin. Acta Sedimentologica Sinica, 2003, 21(3):528～532.]
[9]	夏新宇,赵林,戴金星, 等. 鄂尔多斯盆地中部气田奥陶系风化壳气藏天然气来源及混源比计算. 沉积学报, 1998, 16(3):75～78[Xia Xinyu, Zhao Lin, Dai Jinxing,et al. Gas sources and mixing ratio of Ordovician weathering crust reservoir of central gas field in Ordos Basin. Acta Sedimentologica Sinica, 1998,16(3):75～78]
[10]	张同伟,王先彬,陈践发,王雅丽. 天然气运移的气体组分的地球化学示踪. 沉积学报, 1999,17(4):627～632[Zhang Tongwei, Wang Xianbin, Chen Jianfa, Wang Yali. Chemical composition of gases as a geochenmical tracer of natural gas migration. Acta Sedimentologica Sinica, 1999,17(4):627～632]
[11]	Wang Zhaoming, Wang Tingdong, Xiao Zhongyao, Xu Zhiming, Li Mei and Lin Feng. Migration and accumulation of natural gas in Kela-2 gas field. Chinese Science Bulletin, 2002,47(Suppl.): 107～112
[12]	Zhao Mengjun, Lu Shuangfang, Wang Tingdong & Li Jian. Geochemical characteristics and formation process of natural gas in Kela 2 gas field. Chinese Science Bulletin, 2002, 47(Suppl.): 113～119
[13]	赵孟军,卢双舫,李剑. 库车油气系统天然气地球化学特征及气源探讨. 石油勘探与开发,2002, 48(6),4～7[Zhao Meng-jun, Lu Shangfang and Li Jian. The geochemical features of natural gas in Kuqa depression and the discussion on the gas source. Petroleum Exploration & Development, 2002, 48(6),4～7]
[14]	赵孟军,张宝民. 库车前陆坳陷形成大气区的烃源岩条件. 地质科学,2002, 37(增刊):35～44[Zhao Mengjun & Zhang Baomin. Source rocks for a giant gas accumulating area in the Kuqa foreland depression. Chinese Journal of Geology, 2002,37(Suppl.): 35～44]
[15]	赵孟军,夏新宇,秦胜飞, 等. 塔里木盆地阿克1井气藏气源研究. 天然气工业,2003,23(2):31～33[Zhao Mengjun, Xia Xinyu, Qin Shengfei,et al. Gas sources study of Ake Well 1 resource in Tarim Basin. Natural Gas Industry, 2003,23(2):31～33.]
[16]	戴金星,钟宁宁,刘德汉,等. 中国煤成大中型气田地质基础和主控因素. 北京:地质出版社, 2000. 11～23[Dai Jinxing, Zhong Ningning, Liu Dehan, et al. The Geological Base and Main Controlling Factors on the Large and Medium Coal Formed Gas Field. Beijing: Geological Publishing House,2000. 11～23]
[17]	贾承造,秦胜飞,李启明. 塔里木盆地库车坳陷油气的形成与分布. 见:戴金星,傅诚德,夏新宇主编. 煤成烃国际学术研讨会论文集. 北京:石油工业出版社,2000. 176～190[Jia Chengzao, Qin Shengfei and Li Qiming. Petroleum formation and occurrence in Kuche Depression of Tarim Basin. In: Dai Jinxing, Chengde and Xia Xinyu, eds. International Symposium on Hydrocarbon from Coal. Beijing:Petroleum Industry Press, 2000. 176～190]
[18]	戴金星,戚厚发. 我国煤成气的δ13C1-Ro关系. 科学通报,1989,34(9):265～269[ Dai Jinxing and Qi Houfa. The relationship of δ13C1-Ro of coal formed gas in China. Chinese Science Bulletin, 1989,34(9):265～269]
[19]	Rooney M A, Cloypool G E, Chung H M. Modeling thermogenic gas generation using carbon isotope ratios of natural gas hydrocarbons. Chemical Geology, 1995,126: 219～232
[20]	李慧莉,邱楠生,金之钧. 吕修祥.塔里木盆地克拉2气田储层流体包裹体与油气成藏研究. 沉积学报,2003,21(4):648～653[ Li Huili, Qiu Nansheng, Jin Zhijun, Lu Xiuxiang. Study on hydrocarbon entrapment in Kela 2 gas field, Tarim Basin-Evidence from reservoir fluid inclusion. Acta Sedimentologica Sinica, 2003,21(4):648～653]

The Effect on the Geochemical Characteristics of Natural Gas by Filling Process

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通讯作者: 陈斌, bchen63@163.com

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