琼东南盆地宝岛北坡断层封闭性与油气运聚关系

张新顺，黄志龙,范彩伟,吴红烛,徐新德,李美凝

doi:10.11764/j.issn.1672-1926.2013.02.356

天然气地球科学 >

2013 , Vol. 24 >Issue 2: 356 - 364

DOI: https://doi.org/10.11764/j.issn.1672-1926.2013.02.356

天然气地质学

琼东南盆地宝岛北坡断层封闭性与油气运聚关系

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1.中国石油大学(北京),北京 102249；2.中海石油(中国)有限公司湛江分公司,广东湛江 524057

张新顺(1988-),男,河南濮阳人,硕士研究生,主要从事石油地质研究.E-mail: vvvzxs@126.com.

收稿日期: 2012-08-21

修回日期: 2012-10-02

网络出版日期: 2013-04-10

基金资助

国家重大专项子课题“莺琼盆地低品位天然气成藏机制与潜力分析”(编号:2011ZX05023-004-008)资助.

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Fault Sealing Capacity and Relationship with Oil-gas Accumulation at Baodao Northern Slope

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1.China University of Petroleum（Beijing）,Beijing 102249,China;2.Zhanjiang Branch of CNOOC Limited,Zhanjiang 524057,China

Received date: 2012-08-21

Revised date: 2012-10-02

Online published: 2013-04-10

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摘要

在对琼东南盆地宝岛北坡最新油气勘探资料分析基础上,通过比对宝岛北坡A区和B区的油气地球化学特征,利用Knipe三角图和断层连通概率法(FOI)综合评判地区断层封闭性,最后结合油气成藏期、断层主要活动期、沉积相等地质特征,分析宝岛北坡断层封闭性对地区油气运聚产生的影响。结果表明:宝岛北坡A区天然气具有重烃含量高、非烃含量低、碳同位素组成轻且凝析油中不含C₃₀-4甲基甾烷和双杜松烷的特征,这与B区有明显区别；研究区内断层主要活动期为三亚组(T₅₀—T₆₀)沉积时期,在晚期的油气运聚高峰期时断层主要是静止的；现今断层具有分段封闭性的特征,深部断层封闭性较差成为沟通烃源岩和储层的良好通道；断层的分段封闭性特征造成了宝岛A区和B区油气不同的运聚方式,从而导致了气藏中油气性质的不同。

关键词： 断层封闭性; 油气特征; 油气运聚方式; 宝岛北坡; 琼东南盆地

本文引用格式

张新顺，黄志龙,范彩伟,吴红烛,徐新德,李美凝 . 琼东南盆地宝岛北坡断层封闭性与油气运聚关系[J]. 天然气地球科学, 2013 , 24(2) : 356 -364 . DOI: 10.11764/j.issn.1672-1926.2013.02.356

Abstract

Based on the newest oil & gas exploration data of Baodao Northern slope in the Qiongdongnan basin,through oil-gas geochemical comparison of area A and area B,the regional fault sealing capacity was evaluated by Knipe triangle map and fault opening index (FOI).Finally combined with the oil-gas accumulation period,stage of fault activity,sedimentary facies and some other geological factors,influence of the fault closure in the northern slope of Baodao on regional oil and gas migration and accumulation was evaluated.The faults connecting source rock with reservoirs are favorable paths for oil & gas vertical migration,and they have segmented sealing capacity.It is the segmented sealing capacity of faults that result in different oil-gas migration and accumulation modes in area A and area B,which is also the reason of the differences properties of the oil-gas in the gas reservoir.The results show that natural gas in area A has high level of heavy hydrocarbon,low level of non-hydrocarbon,light carbon isotope and the gas condensate without dicadinane and 4-methyl-steranes,which is significantly different from the gases in area B.The faults are active mainly during depositional period of Sanya Formation,which means the faults are static at the peak stage of oil-gas migration.

Key words： Fault sealing capacity; Oil and gas characteristics; Oil and gas accumulation mode; Baodao northern slope; Qiongdongnan basin

参考文献

［1］Yin Xinyi,Ren Jianye,Pei Jianxiang,et al.Quantitative calculation on fault activity and fault propagation mechanism in Qiongdongnan basin,South China Sea［J］.Geological Journal of China Universities,2010,36(2):60-67.［尹新义,任建业,裴健翔,等.琼东南盆地断裂活动性定量计算及其发育演化模式［J］.高校地质学报,2010,36(2):60-67.］

［2］Liu Jinghuan,Wang Ruili.The relations between the evolution of clay mineral and gas-pool forming in Ying-Qiong basin［J］.Journal of Southwest Petroleum University:Science & Technology Edition,2011,33(3):74-78.［刘景环,王瑞丽.粘土矿物演化与莺琼盆地天然气成藏关系［J］.西南石油大学学报:自然科学版,2011,33(3):74-78.］

［3］Zhu Weilin,Zhang Gongcheng,Li Xushen,et al.Northern Continental Margin Basin of South China Sea Natural Gas Geology［M］.Beijing:Petroleum Industry Press,2007:20-21,43-45.［朱伟林,张功成,李绪深,等.南海北部大陆边缘盆地天然气地质［M］.北京:石油工业出版社,2007:20-21,43-45.］

［4］Huang Baojia,Huang Heting,Li Li,et al.Characteristics of marine source rocks and effect of high temperature and overpressure to organic matter maturation in Yinggehai-Qiongdongnan basins［J］.Marine Origin Petroleum Geology,2010,15(3):11-17.［黄保家,黄合庭,李里,等.莺—琼盆地海相烃源岩特征及高温高压环境有机质热演化［J］.海相油气地质,2010,15(3):11-17.］

［5］Liu Zhenghua,Chen Honghan.Origin mechanism and source rock for natural gas in Qiongdongnan basin,South China Sea［J］.Petroleum Geology & Experiment,2011,33(6):639-644.［刘正华,陈红汉.琼东南盆地天然气成因类型及其烃源探讨［J］.石油实验地质,2011,33(6):639-644.］

［6］Li Wenhao,Zhang Zhihuan,Li Youchuan,et al.Geochemical characteristics and hydrocarbon generation of Paleogene Oligocene source rocks in Qiongdongnan basin［J］.Natural Gas Geoscience,2011,22(4):701-708.［李文浩,张枝焕,李友川,等.琼东南盆地古近系渐新统烃源岩地球化学特征及生烃潜力分析［J］.天然气地球科学,2011,22(4):701-708.］

［7］Wang Huan,Wang Qi,Zhang Gongcheng,et al.Comprehensive evaluation on mudstone caprock in the second member of Lingshui Formation in Qiongdongnan basin［J］.Natural Gas Geoscience,2011,22(5):770-777.［王欢,王琪,张功成,等.琼东南盆地陵水组二段泥岩盖层综合评价［J］.天然气地球科学,2011,22(5):770-777.］

［8］Liu Zhenghua,Chen Honghan.Hydrocarbon charging orders and times in the eastern area of Qiongdongnan basin［J］.Geoscience,2011,25(2):279-288.［刘正华,陈红汉.琼东南盆地东部地区油气形成期次和时期［J］.现代地质,2011,25(2):279-288.］

［9］He Jiaxiong,Wu Wenhai,Zhu Youhai,et al.Genetic types,migration and accumulation of oil & gas and exploration proposal in north marginal basins,South China Sea［J］.Natural Gas Geoscience,2010,21(1):7-17.［何家雄,吴文海,祝有海,等.南海北部边缘盆地油气成因及运聚规律与勘探方向［J］.天然气地球科学,2010,21(1):7-17.］

［10］Li Xuxuan.Tectonic-Dynamic Evaluation of Qiongdongnan Basin and Analysis of Oil and Gas Accumulation［D］.Guangzhou:Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,2004:58-62.［[JP3]李绪宣.琼东南盆地构造动力学演化及油气成藏研究［D］.广州:中国科学院广州地球化学研究所,2004:58-62.］

［11］Xie Yuhong,Wang Zhenfeng,Tong Chuanxin.Petroleum geology of Yacheng 13-1,the largest gas field in China′s offshore region［J］.Marine and Petroleum Geology,2008,25(8):433-444.

［12］Lü Yanfang,Fu Guang,Zhang Yunfeng,et al.Analysis of Fault Sealing Ability［M］.Beijing:Petroleum Industry Press,2002:117-120.［吕延防,付广,张云峰,等.断层封闭性研究［M］.北京:石油工业出版社,2002:117-120.］

［13］Fu Xiaofei,Wen Haibo,Lü Yanfang,et al.Quick evaluation method and its application of fault seal during early exploration period［J］.Journal of Jilin University:Earth Science Edition,2011,41(3):615-620.［付晓飞,温海波,吕延防,等.勘探早期断层封闭性快速评价方法及应用［J］.吉林大学学报:地球科学版,2011,41(3):615-620.］

［14］Fu Guang,Meng Qingfen.Theoretical analysis on the influential factors of fault sealing［J］.Natural Gas Geoscience,2002,13(3/4):40-44.［付广,孟庆芬.断层封闭性影响因素的理论分析［J］.天然气地球科学,2002,13(3/4):40-44.］

［15］Knipe R J.Juxtaposition and seal diagrams to help analyze fault Sseals in hydrocarbon reservoirs［J］.AAPG Bulletin,1997,81(2):187-195.

［16］Zhang Likuan,Luo Xiaorong,Vasseur G,et al.Evaluation of geological factors in characterizing fault connectivity during hydrocarbon migration:Application to the Bohai Bay basin［J］.Marine and Petroleum Geology,2011,28:1634-1647.

［17］Yielding G,Freeman B,Needham D T.Quantitative fault seal prediction［J］.AAPG Bulletin,1997,81:897-917.

［18］Bailey W R,Underschultz J,Dewhurst D N,et al.Multi-disciplinary approach to fault and top seal appraisal;Pyrenees-Maced on oil and gas fields,Exmouth Sub-basin,Australian Northwest Shelf ［J］.Marine and Petroleum Geology,2006,23:241-259.

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