重力、地震联合反演方法确定深层油气藏的分布——以锡林凹陷石炭系分布为例
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摘要
文章以内蒙巴彦浩特盆地锡林凹陷为例,说明重力、地震联合反演方法在确定深部生油目的层石炭纪地层的应用效果。巴彦浩特盆地多期构造影响,造成逆冲、剥蚀及断块作用十分显著;在地震资料解释中,同相轴难以追踪或会误追踪。采用2 D重力模型反演与地震走时反演的联合反演对x5,x6线高精度重力与地震资料进行处理,指出了原根据地震资料确定的局部高隆起不是目的层石炭系而是剥蚀殆尽的寒武系;同时还给出了锡林凹陷石炭系的分布范围,避免了勘探风险。
By taking the Xilin Sag in Bayanhaote Basin, Inner Mongolia, as an example, the result of deciding on the deep target zone (Carboniferous) by applying the joint inversion method of gravity and seismic d ata is introduced in the paper. The thrusting, denudation and fault-block acti on are very obvious in Bayanhaote Basin owing to the influence of multiphase tec tonic movements, so that the event tracing is very difficult or incorrect in se ismic data interpretation. Through processing the high resolution gravity and se ismic data of Lines x5 and x6 by applying the joint inversion of the 212 D gravity data and seismic travel-time data, it was considered that the formation confirmed initially by seismic data at the local uplift is not th e Carboniferous, but the completely denudated Cambrian, Meanwhile, the distri bution of the Carboniferous in the sag was delimited, thus decreasing the explo ration risk.
By taking the Xilin Sag in Bayanhaote Basin, Inner Mongolia, as an example, the result of deciding on the deep target zone (Carboniferous) by applying the joint inversion method of gravity and seismic d ata is introduced in the paper. The thrusting, denudation and fault-block acti on are very obvious in Bayanhaote Basin owing to the influence of multiphase tec tonic movements, so that the event tracing is very difficult or incorrect in se ismic data interpretation. Through processing the high resolution gravity and se ismic data of Lines x5 and x6 by applying the joint inversion of the 212 D gravity data and seismic travel-time data, it was considered that the formation confirmed initially by seismic data at the local uplift is not th e Carboniferous, but the completely denudated Cambrian, Meanwhile, the distri bution of the Carboniferous in the sag was delimited, thus decreasing the explo ration risk.
引文
1 杨辉,戴世坤,宋海斌等.综合地球物理联合反演综述.地球物理学进展,2002;17(2):262~271
3 王家林,吴健生.中国典型含油气盆地综合地球物理研究.上海:同济大学出版社,1995
4 SavinoJ M,RodiW L,MassoJ F.Simultaneous inversionof multiple geophysical data sets for earth structure.Pres ented at the50thAnnInternatMtgSocExplorGeophys,1980
5 王一新,廉西京.重力与地震联合解释在石油勘探中的应用.石油物探,1983;22(3):34~41
6 LinesL,SchultzA K,Treitels.Cooperative inversion ofgeophysical data.In:AnnualMeetingAbstracts.SocietyofExplorationGeophysicists,1987:814—816
7 LinesL,SchultzA K,Treitels.Cooperative inversion ofgeophysical data.Geophysics,1988;53(1):8—20
8 汪宏年等.层状介质中重力、地震联合反演的迭代算法.石油地球物理勘探,1993;28(2):153~165
9 冯锐等.地震—重力联合反演中的非块状一致性模型.地球物理学报,1993;36(4):463~475
10 BrianS et al.A report on the renaissance of gravity inthe deep waterGulf ofMexico:A practical view of inte gration methods.In:AnnualMeetingAbstracts.SocietyOfExplorationGeophysicists,1998:515—517
11 朱介寿等.任意介质中的射线追踪方法.北京:地震出版社,1988:603~630
12 李媛媛.重震联合反演.中国地质大学(武汉)硕士论文,2003
3 王家林,吴健生.中国典型含油气盆地综合地球物理研究.上海:同济大学出版社,1995
4 SavinoJ M,RodiW L,MassoJ F.Simultaneous inversionof multiple geophysical data sets for earth structure.Pres ented at the50thAnnInternatMtgSocExplorGeophys,1980
5 王一新,廉西京.重力与地震联合解释在石油勘探中的应用.石油物探,1983;22(3):34~41
6 LinesL,SchultzA K,Treitels.Cooperative inversion ofgeophysical data.In:AnnualMeetingAbstracts.SocietyofExplorationGeophysicists,1987:814—816
7 LinesL,SchultzA K,Treitels.Cooperative inversion ofgeophysical data.Geophysics,1988;53(1):8—20
8 汪宏年等.层状介质中重力、地震联合反演的迭代算法.石油地球物理勘探,1993;28(2):153~165
9 冯锐等.地震—重力联合反演中的非块状一致性模型.地球物理学报,1993;36(4):463~475
10 BrianS et al.A report on the renaissance of gravity inthe deep waterGulf ofMexico:A practical view of inte gration methods.In:AnnualMeetingAbstracts.SocietyOfExplorationGeophysicists,1998:515—517
11 朱介寿等.任意介质中的射线追踪方法.北京:地震出版社,1988:603~630
12 李媛媛.重震联合反演.中国地质大学(武汉)硕士论文,2003
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