苏北盆地黄桥CO_2气田成因特征及成藏机制
|
摘要
苏北盆地黄桥CO2气田具有深部气田与浅部气田、海相气田与陆相气田匹配组合互成一体、多个气藏组合分布的特点,其CO2主要以深部幔源成因为主,浅层混有部分热变质成因和少量有机成因CO2,氦气和氮气主要为幔源成因,而且,黄桥地区CO2气藏的发育与深大断裂和岩浆火山活动具有很好的时空配置关系,形成了独特的"黄桥式"CO2气成藏模式,并具备良好的储盖圈保条件。但黄桥CO2气田气源与常规的烃类气藏不同,故应重视对拉张环境下火山发育区、地幔柱、深源地震区等地幔流体上升通道的勘查,尤其是要重视对盆地外剪切带、含地幔岩包体的火山口等按传统有机成气理论判断不会出现烃类气藏地区的研究。
Huangqiao carbon dioxide gas field in North Jiangsu Basin have the following characteristics:deep gas fields are associated with shallow ones,marine gas fields are coupled with continental ones,and several gas reservoirs are combined.Carbon dioxide in Huangqiao area mainly comes from deep mantle,mixed with a little thermal metamorphism and a little organic carbon dioxide in shallow formation,and helium and nitrogen gas mainly come from mantle.There is a good time-space matching relationship between carbon dioxide gas reservoirs and great rifts,magma and volcano activity,which forms the special carbon dioxide gas reservoir mode for Huangqiao.This mode has good sealing,trapping and preserving conditions,but its gas source differs from traditional hydrocarbon gas reservoirs.So the inorganic gas reservoir exploration should not only be confined in petroliferous basins,but also focus on mantle liquid rising lane of the volcano active area,mantle plume,deep earthquake region in an extensional environment,especially shear zone out of basins,crater containing mantle-derived xenoliths where,according to the conventional organic gas generation theory,the hydrocarbon gas reservoir can not exist.
Huangqiao carbon dioxide gas field in North Jiangsu Basin have the following characteristics:deep gas fields are associated with shallow ones,marine gas fields are coupled with continental ones,and several gas reservoirs are combined.Carbon dioxide in Huangqiao area mainly comes from deep mantle,mixed with a little thermal metamorphism and a little organic carbon dioxide in shallow formation,and helium and nitrogen gas mainly come from mantle.There is a good time-space matching relationship between carbon dioxide gas reservoirs and great rifts,magma and volcano activity,which forms the special carbon dioxide gas reservoir mode for Huangqiao.This mode has good sealing,trapping and preserving conditions,but its gas source differs from traditional hydrocarbon gas reservoirs.So the inorganic gas reservoir exploration should not only be confined in petroliferous basins,but also focus on mantle liquid rising lane of the volcano active area,mantle plume,deep earthquake region in an extensional environment,especially shear zone out of basins,crater containing mantle-derived xenoliths where,according to the conventional organic gas generation theory,the hydrocarbon gas reservoir can not exist.
引文
[1]吴聿元,李建青,赵曙白,等.下扬子区海相中古生界石油地质特征研究.中国石化华东分公司,2005.
[1]戴金星.非生物天然气资源的特征与前景[J].天然气地球科学,2006,17(1):1-6.
[2]戴金星,宋岩,戴春森,等.中国东部无机成因气及其气藏形成条件[M].北京:科学出版社,1995:167-169.
[3]王杰,刘文汇,秦建中,等.中国东部幔源气藏存在的现实性与聚集成藏的规律性[J].天然气地球科学,2007,18(1):17-24.
[4]杨方之,周荔青,郭念发,等.江苏黄桥二氧化碳气田[M].北京:石油工业出版社,2001:105-118.
[5]万天丰,曹瑞萍.中国中始新世—早更新世构造事件与应力场[J].现代地质,1992,6(3):275-285.
[6]张渝昌,卫自立.苏北—南黄海盆地构造演化[M]//朱夏.中国中新生代沉积盆地.北京:石油工业出版社,1990:111-128.
[7]陈沪生,张永鸿.下扬子区及邻区岩石圈结构构造特征与油气资源评价[M].北京:地质出版社,1999:120-138.
[8]龚与觐,曾维雄.苏北黄桥二氧化碳气田——一种特殊的成藏类型[J].石油实验地质,1998,20(4):374-377.
[9]刘德汉,宫色,刘东鹰,等.江苏句容—黄桥地区有机包裹体形成期次和捕获温度、压力的PVTsi m模拟计算[J].岩石学报,2005,21(5):1435-1448.
[10]陈安定.江苏下扬子区下古生界源岩二次生烃[J].南方油气,2006,19(1):8-17.
[1]戴金星.非生物天然气资源的特征与前景[J].天然气地球科学,2006,17(1):1-6.
[2]戴金星,宋岩,戴春森,等.中国东部无机成因气及其气藏形成条件[M].北京:科学出版社,1995:167-169.
[3]王杰,刘文汇,秦建中,等.中国东部幔源气藏存在的现实性与聚集成藏的规律性[J].天然气地球科学,2007,18(1):17-24.
[4]杨方之,周荔青,郭念发,等.江苏黄桥二氧化碳气田[M].北京:石油工业出版社,2001:105-118.
[5]万天丰,曹瑞萍.中国中始新世—早更新世构造事件与应力场[J].现代地质,1992,6(3):275-285.
[6]张渝昌,卫自立.苏北—南黄海盆地构造演化[M]//朱夏.中国中新生代沉积盆地.北京:石油工业出版社,1990:111-128.
[7]陈沪生,张永鸿.下扬子区及邻区岩石圈结构构造特征与油气资源评价[M].北京:地质出版社,1999:120-138.
[8]龚与觐,曾维雄.苏北黄桥二氧化碳气田——一种特殊的成藏类型[J].石油实验地质,1998,20(4):374-377.
[9]刘德汉,宫色,刘东鹰,等.江苏句容—黄桥地区有机包裹体形成期次和捕获温度、压力的PVTsi m模拟计算[J].岩石学报,2005,21(5):1435-1448.
[10]陈安定.江苏下扬子区下古生界源岩二次生烃[J].南方油气,2006,19(1):8-17.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心