| 莺歌海盆地浅层气藏二氧化碳分布特征及其原因分析 |
| |
| 引用本文： | 黄志龙,黄保家,高岗,童传新,刘江涛.莺歌海盆地浅层气藏二氧化碳分布特征及其原因分析[J].现代地质,2010,24(6):1140-1147. |
| |
| 作者姓名： | 黄志龙 黄保家 高岗 童传新 刘江涛 |
| |
| 作者单位： | 1.中国石油大学 油气资源与探测国家重点实验室，北京102249；2.中国海洋石油有限公司 湛江分公司，广东 湛江524057；
3.中国石油化工集团公司 中国石化石油工程技术研究院，北京100101 |
| |
| 摘 要： | 从CO2的成因、充注期次以及不同底辟发育特征等出发，对不同类型底辟之上的CO2分布特征及其原因进行了分析。研究认为：浅层二氧化碳主要来源于壳源碳酸盐岩的高温分解，其分布差异的主要原因是流体组成、充注期次的不同以及底辟活动强度的差异。在低幅度弱能量底辟带，二氧化碳主要富集在烃类气储层的下部。在高幅度中等能量底辟带，二氧化碳呈现明显的分块分层特征：在断裂的同一侧，浅层富烃，深层富二氧化碳；断裂上盘相对富烃，断裂下盘相对富二氧化碳；同一气层内部，靠近断裂富二氧化碳，远离断裂富烃。在喷口型强能量底辟带，二氧化碳的分布没有明显的规律性。研究还表明，CO2分布深度与水中CO2溶解度有关，深层地层水中的CO2溶解度很大，游离态的CO2大量出现的可能性较小。
|
| 关 键 词： | 天然气 CO2分布特征 流体底辟 浅层气藏 莺歌海盆地 |
Distribution Rules of CO2 in Shallow Gas Reservoir and Relevant Causes in the Yinggehai Basin |
| |
| HUANG Zhi-long,HUANG Bao-jia,GAO Gang,TONG Chuan-xin,LIU Jiang-tao.Distribution Rules of CO2 in Shallow Gas Reservoir and Relevant Causes in the Yinggehai Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2010,24(6):1140-1147. |
| |
| Authors: | HUANG Zhi-long HUANG Bao-jia GAO Gang TONG Chuan-xin LIU Jiang-tao |
| |
| Institution: | 1.State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing102249, China;
2.Zhanjiang Branch Company, China National Offshore Oil Corporation, Zhanjiang, Guangdong524057, China;
3.SINOPEC Research Institute of Petroleum Engineering, China Petrochemical Corporation, Beijing100101, China |
| |
| Abstract: | Based on research of origin and filled periods of CO2 and development characteristics of diapirs,the distribution rules of CO2 in different types of diapirs and relevant causes are analyzed.The result shows that CO2 of shallow gas reservoirs is mainly originated from pyrolysis of the crustal carbonate rocks,and the major causes of distribution diversity are differences of fluid components and filled periods,and difference of diapiric activity intensity.In low amplitude and weak energy diapirs,CO2 has mainly accumulated in underside of hydrocarbon-riched reservoir.In high amplitude and middle energy diapirs,the distribution of CO2 shows apparent characteristics of block-subregion: hydrocarbon gas rich is in shallow reservoir but CO2 is rich in deep reservoir on the same side of fault,and hydrocarbon gas is relatively rich in reservoirs on hanging wall of fault but CO2 is rich in reservoir on footwall of fault,and CO2 hydrocarbon gas is relatively rich nearby fault but is rich far away from fault.In eruption-typed high energy diapirs,the distribution rule of CO2 is not apparent.Distribution depth of CO2 is relevant to it's solubility in water: CO2 is relatively large in deep formation water,so the possibility of forming free CO2 gas reservoir is very small. |
| |
| Keywords: | natural gas distribution rule of CO2 fluid diaper shallow gas reservoir Yinggehai basin |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《现代地质》浏览原始摘要信息 |
| 点击此处可从《现代地质》下载免费的PDF全文 |
|
