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| 辽河盆地新生代火山岩地球化学特征及其与油气成藏的关系 | |
| 引用本文： | 谷团,陈淑凤,苑丽,李朝阳,刘玉平.辽河盆地新生代火山岩地球化学特征及其与油气成藏的关系[J].矿物学报,2006,26(3):325-334. |
| 作者姓名： | 谷团 陈淑凤 苑丽 李朝阳 刘玉平 |
| 作者单位： | 1. 中国石油大学,北京,102249 2. 中国石油,辽河油田分公司,勘探开发研究院,辽宁,盘锦,124010 3. 中国科学院,地球化学研究所,矿床地球化学开放实验室,贵州,贵阳,550002 |
| 基金项目： | 中国石油天然汽集团公司资助项目 |
| 摘 要： | 辽河盆地形成于新生代时期,在其形成演化过程中,发生了多期次的火山活动,主要形成了明显富钠质的粗面质和玄武质碱性系列火山岩。稀土元素反映其形成于大陆裂谷环境,是大陆伸展构造背景下的产物。东营组和沙河街组火山岩的Sr、Nd同位素表明其可能源于软流圈,且地壳物质混染微弱,而房身泡组火山岩可能来自上地幔较浅源区,且受到了下地壳物质较强的混染。盆地内新生代火山岩与油气成藏的关系十分密切,它对油气的生成、运移、储集、封盖、遮挡、聚集和成藏有着重要的有益的影响。火山岩的异常热效应对烃源岩的生排烃起到了很好的促进作用,火山活动和火山岩就位过程及其后来被改造的过程为油气运移和聚集提供了运移通道、储集空间、封盖遮挡条件和圈闭构造。辽河油田近年的勘探实践表明,东部凹陷中段粗面岩油气藏的成藏要素配置良好,已发现了整装的千万吨级的黄沙坨油田,且开发效果良好,展示了新生代火山岩油气藏的勘探潜力,为老油田的产量接替和可持续发展提供了新的勘探目标。 |
| 关 键 词： | 新生代 火山岩 地球化学特征 油气成藏 关系 辽河盆地 |
| 文章编号： | 1000-4734（2006）03-0325-10 |
| 收稿时间： | 2005-11-06 |
| 修稿时间： | 2005年11月6日 |
GEOCHEMICAL CHARACTERISTICS OF CENOZOIC VOLCANIC ROCKS AND THEIR CORRELATIONS WITH HYDROCARBON ACCUMULATION IN LIAOHE BASIN |
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| GU Tuan,CHEN Shu-feng,YUAN Li,LI Chao-yang,LIU Yu-ping.GEOCHEMICAL CHARACTERISTICS OF CENOZOIC VOLCANIC ROCKS AND THEIR CORRELATIONS WITH HYDROCARBON ACCUMULATION IN LIAOHE BASIN[J].Acta Mineralogica Sinica,2006,26(3):325-334. | |
| Authors: | GU Tuan CHEN Shu-feng YUAN Li LI Chao-yang LIU Yu-ping |
| Institution: | 1. University of Petroleum, Beijing 102249, China ; 2. Research and Exploration Institute of Liaohe Oilfield Company Petro China, Panjin 124010, China; 3. Open Lab. of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China |
| Abstract: | The Liaohe Basin was formed in Cenozoic time,during which several episodes of volcanic activity took place.The main Cenozoic volcanic rocks are trachyte and basalt with abundant sodium,belonging to the alkalic series.The characteristics of REE and Sr,Nd isotopes indicate a typical continental rift background of the Cenozoic volcanic rocks.The Cenozoic volcanic rocks have a close relationship with pool formation,which has an important and beneficial impact on the genesis,migration,accumulation,sealing,screening and gathering of oil and gas.The heat effects of the volcanic rocks can facilitate the genesis and expel of hydrocarbons from the source rocks.The volcanic activity and the emplacement of the volcanic rocks provided migration pathways,accumulation room,sealing condition and trap to oil and gas for migrating and gathering in the reservoir.Exploration practice in the past few years demonstrated that the pool-forming factors of trachyte in the middle part of the east depression are favorable.The Huangshatuo oil field,ten-million grade self-contained trachyte reservoir,has been discovered,which reveals the exploration potentiality of Cenozoic volcanic rocks and provides the maturing field with a new exploration target that is critical in production replacement and sustainable development. |
| Keywords: | Cenozoic volcanic rock geochemical characteristic pool forming correlation Liaohe Basin |
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