| 准噶尔盆地陆梁油气田白垩系天然气的成因及其地质意义 |
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| 引用本文： | 李连民,陈世加,王绪龙,胡守志.准噶尔盆地陆梁油气田白垩系天然气的成因及其地质意义[J].天然气地球科学,2004,15(1):75-78. |
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| 作者姓名： | 李连民 陈世加 王绪龙 胡守志 |
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| 作者单位： | (1.西南石油学院，四川 成都 610500；2.新疆油田公司研究院，新疆 克拉玛依 834000) |
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| 摘 要： | 在准噶尔盆地陆梁油气田白垩系及拐16井侏罗系储层发现了一种组成干、甲烷碳同位素轻的天然气,这种天然气的甲烷碳同位素值为-48.5‰～-56.2‰,甲烷含量高达99.8%,与通常所指的生物气特征相似,并与生物降解油相近或伴生。分析了该天然气的成因,指出它主要是来自储层原油的菌解,另外还有侏罗系浅部煤系地层生物气的贡献。认为菌解气的发现,预示着准噶尔盆地中浅层天然气的勘探具有一定的前景。
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| 关 键 词： | 准噶尔盆地 陆梁油气田 天然气成因 原油菌解气 浅层气勘探 |
| 文章编号： | 1672-1926(2004)01-0075-04 |
| 收稿时间： | 2003-10-12 |
CRETACEOUS GAS GENESIS OF LULIANG OIL FIELD AND GEOLOGICAL SIGNIFICANCE IN ZHUNGAER BASIN |
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| LI Lian-min.CRETACEOUS GAS GENESIS OF LULIANG OIL FIELD AND GEOLOGICAL SIGNIFICANCE IN ZHUNGAER BASIN[J].Natural Gas Geoscience,2004,15(1):75-78. |
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| Authors: | LI Lian-min |
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| Affiliation: | (1.Southwest Petroleum Institute, Chengdu 610500, China; 2.Xinjiang Exploration and Development Institute, Kalamayi 834000, China) |
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| Abstract: | The natural gas,which is dry in the component and light in the δ~(13)C of methane,is found in Cretaceous reservoir of Luliang oil field in Zhungaer basin. Its δ~(13)C of methane ranges from -56.2‰ to (-48.5‰), methane content is 99.8%, and is similar to biogenic gas.The formation mechanism of gas is analyzed in the paper,the majority of gas derives reservoir oil degradation gas, the minority derives the biogenic methane in Jurassic coal stratum .The finding of reservoir oil degradation gas indicates that th... |
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| Keywords: | Zhungaer basin Luliang oil field Natural gas genesis Reservoir oil degradation gas Shallow gas exploration |
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