| 塔里木盆地东部英南2气藏天然气散失特征 |
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| 引用本文： | 黄志龙,张振英,陈践发,王招明,肖中尧.塔里木盆地东部英南2气藏天然气散失特征[J].天然气工业,2006,26(9):12-13. |
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| 作者姓名： | 黄志龙 张振英 陈践发 王招明 肖中尧 |
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| 作者单位： | 1.教育部石油天然气成藏机理教育部重点实验室·中国石油大学；2.塔里木油田分公司研究院 |
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| 摘 要： | 英南2气藏的盖层是特殊的致密砂岩，天然气来自寒武系-奥陶系，为湿气。文章利用侏罗系砂岩碳酸钙胶结物碳同位素的分析，认为有20％的碳酸钙胶结物与天然气散失有关，致密砂岩盖层的形成也与天然气散失有关，甲烷的优先散失和消耗可以导致天然气偏湿。并利用天然气运聚动平衡模型模拟了英南2气藏天然气的聚集和散失过程，认为英南2气藏是喜山期以来一直处于天然气储量递减的残留气藏。
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| 关 键 词： | 天然气 散失 碳酸钙胶结物 英南2气藏 塔里木盆地 东 英吉苏凹陷 英南构造带 |
| 收稿时间： | 2006-06-08 |
| 修稿时间： | 2006-06-08 |
DISSIPATION CHARACTERISTICS OF GAS IN YINGNAN-2 GAS RESERVOIR IN THE EASTERN TARIM BASIN |
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| Huang Zhilong,Zhang Zhenying,Chen Jianfa,Wang Zhaoming,Xiao Zhongyao.DISSIPATION CHARACTERISTICS OF GAS IN YINGNAN-2 GAS RESERVOIR IN THE EASTERN TARIM BASIN[J].Natural Gas Industry,2006,26(9):12-13. |
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| Authors: | Huang Zhilong Zhang Zhenying Chen Jianfa Wang Zhaoming Xiao Zhongyao |
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| Affiliation: | 1.The Key Laboratory for Hydrocarbon Accumulation Mechanism, Ministry of Education·China University of Petroleum; 2.PetroChina Tarim Oilfield Company |
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| Abstract: | The seal in Yingnan-2 gas reservoir is specially tight sand and the natural gas is wet gas derived from Cambrian-Ordovician source rocks. Based on carbon isotope analysis of the calcium carbonate cements in Jurassic sandstone, it is believed that gas dissipation was related with 20% of the calcium carbonate cements and the formation of tight sand seal, and the preferential dissipation and consumption of methane resulted in the wet-prone gas. The dynamic equilibrium model is used to simulate the process of gas migration and accumulation in Yingnan-2 gas reservoir. It is believed that Yingnan-2 is a relic gas reservoir, the gas reserves of which have been in declining since Himalayan epoch. |
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| Keywords: | natural gas dissipation calcium carbonate cement Yingnan-2 gas reservoir Tarim Basin east Yingjisu sag Yingnan structure |
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