| 辽河盆地欧利坨子斑岩型油气藏的确定及其意 |
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| 引用本文： | 顾连兴,任作伟,吴昌志,赵明.辽河盆地欧利坨子斑岩型油气藏的确定及其意[J].高校地质学报,2001,7(1):118-120. |
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| 作者姓名： | 顾连兴 任作伟 吴昌志 赵明 |
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| 作者单位： | 南京大学地球科学系及金属矿床成矿机制研究国家重点实验室，江苏南京210093 |
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| 摘 要： | 近年来 ,油藏地质学家对产在火成岩中的油气藏已渐趋重视。但是 ,目前所报道的研究实例主要是产在玄武岩和辉绿岩中的油气藏1,2 ] ,而产在粗面质斑岩体中的油气藏则未见报道。此外 ,以往所讨论的火成岩储集空间主要是气孔、溶孔、冷缩节理、淬碎角砾岩和构造裂缝等3～ 5 ] ,而对侵入岩浆结晶过程中由隐爆作用造成的角砾岩和网状裂隙系统的重要储油意义则尚未充分认识。辽河盆地欧利坨子油田日产原油 2 0 0多吨 ,并有相当数量天然气。油气储集岩主要为中偏碱性的火成岩。自从该油田发现以来 ,研究人员均认为 ,这种火成岩是喷出相的粗面熔岩…
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| 关 键 词： | 辽河盆地 斑岩型 油气藏 成藏机制 火山岩 |
| 收稿时间： | 2001-03-20 |
| 修稿时间： | 2000年10月31 |
Recognition of the Oulituozhi Porphyry-Type Oil and Gas Reservoir in Liaohe Basinand Its Significance |
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| GU Lian-xing,REN Zuo-wei,WU Chang-zhi,Zhao Ming.Recognition of the Oulituozhi Porphyry-Type Oil and Gas Reservoir in Liaohe Basinand Its Significance[J].Geological Journal of China Universities,2001,7(1):118-120. |
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| Authors: | GU Lian-xing REN Zuo-wei WU Chang-zhi Zhao Ming |
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| Institution: | Department of Earth Sciences and State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing 210093, China |
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| Abstract: | The Oulituozhi oil-gas field in the Liaohe Tertiary ba sin,Northeast China,has a dail y output of more than 200 tons of crude oil and a significant amount of gas.Oil and gas are accumulated in the top portion of a subvolcanic trachytic porphyry whichintruded in the Eocene Shahejia Formation.Reservoir space is dominated by crypto-explosive breccias,crack networks,vertical open cracks and tensional microfissures.These varieties of space were produced by explosions of water and other volatiles below an crystalline rind,by upwelling forces of the magma from the depth,and by cooling and volume contraction of the solidified rocks.Because such a combination of space is characteristic of a subvolcanic porph yry,the reservoir at Oulituozhi could be designated as a porphyry-type reservo ir.Such a model should be taken into account during exploration work for oil and gas in the Olituozhi area. |
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