2012年6月，第18卷，第2期，239-247页 June 2012,Vol.18，No.2，p.239-247
高校地质学报
Geological Journal of China Universities
松辽盆地徐家围子断陷玄武岩气藏储层的
CO,封存潜力研究
吾尔娜，吴昌志*，季峻峰，王震宇，顾连兴"，舒萍，丁日新2 1.内生金属矿床成矿机制研究国家重点实验室，南京大学地球科学与工程学院，南京210093
2.中石油大庆勘探开发研究院天然气室，大庆163712
摘要：玄武岩油气藏储层一方面含有大量可与CO，反应生成碳酸盐的造岩矿物，另一方面又有枯竭油气藏的良好储（储集空间）、运（运移通道）、盖（盖层条件）和保（保存能力）等CO,封存优势，是潜力大、实施易、成本低和安全性高的碳汇靶区。该文选取了位于松辽盆地东北部的徐家围子断陷玄武岩气藏开展CO,封存潜力研究，在对该气藏地质特征和储层发育特征详细捕述的基础上，结合玄武岩矿物组成和化学成分的鉴定分析结果，探讨该气藏的矿物固碳能力和油气储层固碳能力，并对其封存CO，的可行性进行了初步评价。研究表明，徐家围子断陷玄武岩气藏有着良好的储集空间，且易碳酸盐化，其盖层可阻止所充注CO,的逸散，稳定的圈闭条件可保证所充注CO,的安全性，因而是CO,封存的理想靶区。初步的定量计算结果表明，徐家围子断陷玄武岩油气藏的矿物固碳潜力约为89.33×10”t，油气储层的封存能力约为6.2×10°t，总计约95.53x×10°t，具有十分可观的固碳潜力。
关键词：CCS（二氧化碳捕集与封存）；地质封存；玄武岩；固碳潜力；徐家围子断陷
中图分类号：X142；P542.3*6
文献标识码：A
文章编号：1006-7493（2012)02-0239-09
PotentialCapacityandFeasibilityofCO,SequestrationinPetroleumReservoirs
ofBasalticRocks:ExamplefromBasalticHydrocarbonReservoirinthe
XujiaweiziFaultDepressionthe SongliaoBasin,East China UERNA Amy', wU Changzhi', JI Junfeng', WANG Zhenyu', GU Lianxing'
SHUPingDINGRixin
1. State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering,
Nanjing University, Nanjing 210093, China
2. Daqing Exploration & Development Institute of Petrochina, Daqing 163712, China
Abstract: The Daqing Oilfield, situated in Songliao Basin of Eastem China, is a famous oilfield for its largest production of crude oil in China. The Xujiaweizi fault depression, located in the north of the basin, covering an area of 4300 km*, developes large amount of basaltic hydrocarbon reservoirs. In this paper, we analyze the geological features and reservoir characteristics of basaltic hydrocarbon reservoir in the depression. Combined with mineral and chemical compositions of basalts from ten deep drilling wells of the Xujiaweizi fault depression, we evaluate the feasibility of CO, sequestration in hydrocarbon reservoir of basaltic rocks, and then estimate the CO, storage capacity from mineral trappimg and gas reservoir trapping in basaltic rocks in the depression. Our results show that reservoir spaces are favorable sites for CO, sequestration and minerals of the reservoir rocks are easily suffered to
收稿日期：201203-25；修回日期：20120508
基金项目：国家自然科学基金项目（40872050）和中国地调局工作项目（1212011087126）联合资助作者简介：吾尔娜，女，蒙古族，硕士研究生，矿物学、岩石学、矿床学专业
"通讯作者：吴吕惠，副教授；E-mail:wucz@nju.edu.en