珠江口盆地番禺低隆起油气输导体系及运移脊线
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摘要
目前勘探成果表明,番禺低隆起具有丰富的油气资源潜力,T5~T2都有油气显示。根据研究区主砂体的时空展布以及目前发现油气的主要层位,确定研究区油气主要输导层为T5、T4~T3、T3~T2三个层位。T5(18.5 Ma)以下珠海组发育三角洲-滨海沉积体系分布广泛,是油气长距离运移的输导体。T4(15.5 Ma)~T3(13.8 Ma),T3(13.8 Ma)~T2(10.0 Ma)发育的浅水三角洲、斜坡扇与低位进积复合体也是有利的油气储集体和侧向输导体。番禺低隆起广泛发育的第三系同沉积反向断层是油气运移的纵向输导体系。利用地震和钻井资料恢复了古构造格局并结合有机包裹体分析明确了油气运移脊线。断层-砂体输导层相互匹配,沿构造脊线呈立体网状阶梯式的运移是研究区油气输导体系最鲜明的特点。
The present exploration indicates that Panyu Low Massif has abundant oil-gas resource potential.According to the study of main sand space-time distribution and stratum of hydrocarbon finding in this area,we can confirm that three layers(T5,T4-T3,T3-T2) is the main stratum of hydrocarbon migration.The delta-strand deposit system which is developed in Zhuhai Group(T5 18.5 Ma) is the conductor department of hydrocarbon's long distance transport.Also the shallow water delta,slope fan developed in the stratum of T4(15.5 Ma)～T3(13.8 Ma),T3(13.8 Ma)～T2(10.0 Ma) is the favorable reservoir and conductor department.Panyu Low Massif extensively develops syndepositional reverse fault which is the conductor department of hydrocarbon vertical migration.Using earthquake and well datum recover the ancient structure pattern and combine organic fluid inclusion analysis we can open out the structure ridge of hydrocarbon migration.The type of pathway system that hydrocarbon migrates by fault-sand conductor along structure ridge in the form of three-dimensional netted ladder is the most distinct characteristic in this area.
The present exploration indicates that Panyu Low Massif has abundant oil-gas resource potential.According to the study of main sand space-time distribution and stratum of hydrocarbon finding in this area,we can confirm that three layers(T5,T4-T3,T3-T2) is the main stratum of hydrocarbon migration.The delta-strand deposit system which is developed in Zhuhai Group(T5 18.5 Ma) is the conductor department of hydrocarbon's long distance transport.Also the shallow water delta,slope fan developed in the stratum of T4(15.5 Ma)～T3(13.8 Ma),T3(13.8 Ma)～T2(10.0 Ma) is the favorable reservoir and conductor department.Panyu Low Massif extensively develops syndepositional reverse fault which is the conductor department of hydrocarbon vertical migration.Using earthquake and well datum recover the ancient structure pattern and combine organic fluid inclusion analysis we can open out the structure ridge of hydrocarbon migration.The type of pathway system that hydrocarbon migrates by fault-sand conductor along structure ridge in the form of three-dimensional netted ladder is the most distinct characteristic in this area.
引文
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2龚再升,李思田.南海北部大陆边缘盆地油气成藏动力学研究[M].北京:科学出版社,2004.223~319
3钟建强.珠江口盆地的构造特征与盆地演化[J].海洋湖沼通报,1994,(1):1~8
4陈长民,施和生,许仕策,等.珠江口盆地(东部)第三纪油气藏形成条件[M].北京:科学出版社,2003.1~143
5朱俊章,施和生,庞雄,等.珠江口盆地番禺低隆起天然气成因和气源分析[J].天然气地球科学,2005,16(4):256~259
6代一丁,庞雄.珠江口盆地珠二坳陷石油地质特征[J].中国海上油气(地质),1999,13(3):169~173
7张照录,王华,杨红.含油气盆地的输导体系研究[J].石油与天然气地质,2000,21(2):133~135
8张卫海,查明,曲江秀.油气输导体系的类型及配置关系[J].新疆石油地质,2003,24(2):118~120
9付广,薛永超,付晓飞,等.油气输导系统及其对成藏的控制[J].新疆石油地质,2001,22(1):24~26
10付广,付晓飞.断裂输导系统及其组合对油气成藏的控制作用[J].世界地质,2001,20(4):344~349
11向才富,夏斌,解习农,等.松辽盆地西部斜坡带油气运移主输导通道[J].石油与天然气地质,2004,25(2):204~215
12 Zhang Chunming,Li Sitian,Yang Jiaming,etc.Petroleum mi-gration and mixing in the Pearl River Mouth Basin,South ChinaSea[J].Marine and Petroleum Geology,2004,21:215~224
13 Wang Chunxiu,Sun Yuxiao.Development of Paleogene depres-sions and deposition of lacustrine source rocks in the Pearl RiverMouth Basin,northern margin of the South China Sea[J].AAPG Bulletin,1994,78(11):1711~1728
①于兴河,侯国伟,庞雄,等.PY30-1天然气田及其区带储层沉积学研究报告.中国地质大学(北京),中海石油(中国)有限公司深圳分公司.2004
①侯读杰,肖建新,庞雄,等.珠江口盆地白云凹陷北坡天然气运移特征及输导体系研究.中国地质大学(北京),中海石油(中国)有限公司深圳分公司.2004
①梅廉夫,陈红汉,何生,等.珠江口盆地番禺低隆起-白云凹陷北坡天然气成藏规律研究.中国地质大学(武汉),2004
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