收稿日期: 2008-05-06
修回日期: 2008-08-05
网络出版日期: 2008-10-10
Carbon Isotopic Reversal Numerical Simulation of Deep-seated Gases, Songliao Basin
Received date: 2008-05-06
Revised date: 2008-08-05
Online published: 2008-10-10
松辽盆地深层天然气资源丰富,在烃类气体成因认识上存在以有机成因为主与以无机成因为主的巨大争议,持无机成因观点者的一个主要论点就是松辽盆地深层天然气的碳同位素发生了倒转。选取松辽盆地深层不同类型有机成因烃类气体和典型的无机成因烃类气体,进行不同成因气体不同比例混合的碳同位素数值模拟,结果发现:不同类型的有机成因烃类气体混合不会产生甲烷及其同系物碳同位素完全倒转,而在不同类型的有机烃类气体中加入一定量的无机成因烃类气体,混合气体中甲烷及其同系物碳同位素都会发生完全倒转。气体混合碳同位素数值模拟结果表明:①松辽盆地深层天然气碳同位素倒转是因为无机气混入的结果;②仅凭天然气负碳系列同位素不能完全断定某种气体为无机成因。
刘婷;米敬奎;张敏 . 松辽盆地深层天然气碳同位素倒转数值模拟[J]. 天然气地球科学, 2008 , 19(05) : 722 -726 . DOI: 10.11764/j.issn.1672-1926.2008.05.722
There are abundant natural gas resources in deep formation in the Songliao basin, but there is also a debate between organic origin and inorganic origin of those hydrocarbons. The carbon isotopic reversal of deep gas in the Songliao basin is an important argument of inorganic views. This paper selects several typical organic and inorganic hydrocarbons and makes a numerical simulation through mixing different types of hydrocarbons with different ratios. The results show that: mixing with different types of organic hydrocarbons doesn’t produce a complete carbon isotopic reversal between methane and its homologues, but this complete reversal will happen in mixture of organic and inorganic hydrocarbons. The numerical simulation indicates that: (1) the reason for the carbon isotopic reversal of deep seated gas in the Songliao basin is that some inorganic gas is mixed; (2) only relying on a complete carbon isotopic reversal between methane and its homologues can’t tell which kind of gas is inorganic.
[1]康竹林.中国深层天然气勘探前景[J].天然气工业,2000,20(5):1-4.
[2]戴金星,宋岩,戴春森,等.中国东部无机成因气及其气藏形成条件[M].北京:科学出版社,1995:188-190.
[3]郭占谦,王先彬.松辽盆地非生物成因气的探讨[J].中国科学(B),1994,24(3):303-309.
[4]崔永强,李莉,陈卫军.松辽盆地无机成因烃类气藏的幔源贡献[J].大庆石油地质与开发,2001,20(4):6-8.
[5]黄海平.松辽盆地徐家围子断陷深层天然气同位素倒转现象研究[J].地球科学——中国地质大学报,2000,25(6):617-623.
[6]王连生,郭占谦,马志红,等.无机成因天然气的地球化学特征[J].吉林大学学报:地球科学版,2004,34(4):542-545.
[7]戴金星.中国含油气盆地的无机成因气及其气藏[J].天然气工业,1995,15(3):22-27.
[8]戴金星,夏新宇,秦胜飞,等.中国有机烷烃气碳同位素系列倒转的成因[J].石油与天然气地质,2003,24(1):1-6.
[9]戴金星.加强天然气地学研究勘探更多大气田[J].天然气地球科学,2003,14(1):3-14.
[10]戴金星.天然气碳氢同位素特征和各类天然气的鉴别[J].天然气地球科学,1993,4(2/3):1-40.
[11]戴金星.概论有机烷烃气碳同位素系列倒转的成因问题[J].天然气工业,1990,10(6):15-20.
[12]宋维海,王璞瑶,张兴洲,等.松辽盆地中生代火山岩油气藏特征[J].石油与天然气地质,2003,24(1):12-17.
[13]侯启军,杨玉峰.松辽盆地无机成因天然气及勘探方向探讨[J].天然气工业,2002,22(3):5-10.
[14]戴金星,秦胜飞,陶士振,等.中国天然气工业发展趋势和天然气地学理论重要进展[J].天然气地球科学,2005,16(2):127-142.
[15]肖海燕.松辽盆地东部断陷盆地天然气特征及气源探讨[J].沉积学报,1994,12(3):91-98.
/
〈 |
|
〉 |