渤海海域盆内低凸起周边近源砂体形成条件及预测方法——以辽东湾JZ-A构造区沙一、二段为例
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摘要
传统认为渤海海域辽东湾地区的盆地低凸起由于面积小,不能作为有效物源,周边碎屑储层不发育。通过仔细分析JZ-A构造相邻凸起区的钻井、地震等资料,分析认为该低凸起区沙二早期辫状沟道发育,可以作为有效物源区,沙二晚期发育湖相碳酸盐岩沉积。在动态物源理论指导下,在精细的古地貌及古沟谷分析基础上,应用宏观地震相分析技术、地震属性分析技术、多属性聚类分析技术预测了沙二早期辫状河三角洲展布范围。后来的勘探实践与预测结果完全吻合,并发现了中型油气田。该地区沉积储层的成功预测,在类似构造区块有一定借鉴意义。
For a long time,because the area of low salient in Liaodong bay area in Bohai Sea was small,it wasn't considered as an effective source and the clastic reservoirs wasn't developed.By analyzing drilling and seismic data in JZ-A structure,braided valleys are developed in this low salient during sedimentation early stage of Es2 and they can be treated as the effective source.During late stage of Es2,the carbonate sediments were developed.Under the direction of dynamic source theory and based on the subtle analysis of palaeogeomorphology and paleovalley,braided-river delta distribution during early stage of Es2 was predicted by using seismic facies analysis techniques,seismic attribute analysis techniques and multi-attribute combination of cluster analysis techniques.Finally,a middle scale oilfield was found which provided reference for future petroleum geological exploration in other similar structures.
For a long time,because the area of low salient in Liaodong bay area in Bohai Sea was small,it wasn't considered as an effective source and the clastic reservoirs wasn't developed.By analyzing drilling and seismic data in JZ-A structure,braided valleys are developed in this low salient during sedimentation early stage of Es2 and they can be treated as the effective source.During late stage of Es2,the carbonate sediments were developed.Under the direction of dynamic source theory and based on the subtle analysis of palaeogeomorphology and paleovalley,braided-river delta distribution during early stage of Es2 was predicted by using seismic facies analysis techniques,seismic attribute analysis techniques and multi-attribute combination of cluster analysis techniques.Finally,a middle scale oilfield was found which provided reference for future petroleum geological exploration in other similar structures.
引文
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[8]高喜龙,李照延,杨鹏飞,等.层序地层学在埕岛油田东斜坡隐蔽油气藏勘探中的应用[J].石油地球物理勘探,2002,37(2):210-214.
[9]林畅松,潘元林,肖建新,等.“构造坡折带”——断陷盆地层序分析和油气预测的重要概念[J].地球科学——中国地质大学学报,2000,25(3):260-266.
[10]程日辉,王璞,刘万洙.构造断阶对沉积的控制:来自地震、测井和露头的实例[J].沉积学报,2003,21(2):225-259.
[11]刘豪,王英民,王媛,等.大型坳陷湖盆坡折带的研究及其意义——以准噶尔盆地西北缘侏罗纪坳陷湖盆为例[J].沉积学报,2004,22(1):95-102.
[12]万琳.地震属性分析及其在储层预测中的应用[J].油气地球物理,2009,74(3):43-46.
[13]印兴耀,周静毅.地震属性优化方法综述[J].石油地球物理勘探,2005,40(4):482-489.
[2]徐长贵,赖维成.渤海古近系中深层储层预测技术及其应用[J].中国海上油气,2005,17(4):231-236.
[3]徐长贵,赖维成,薛永安,等.古地貌分析在渤海古近系储层预测中的应用[J].石油勘探与开发,2004,31(5):53-56.
[4]邓宏文,王洪亮,王敦则.古地貌对陆相裂谷盆地层序充填特征的控制[J].石油与天然气地质,2001,22(4):293-303.
[5]周心怀,王昕,魏刚,等.辽中中洼东陡坡带古近系层序地层格架控制下的储层预测[J].中国海上油气,2007,19(5):306-310.
[6]肖焕钦,孟宪波,陈宝宁,等.济阳坳陷陡坡带断裂控砂模式[J].油气地质与采收率,2002,9(5):20-22.
[7]隋风贵,郭玉新,王宝言,等.东营凹陷深陷期构造坡折带与低位扇序列[J].石油勘探与开发,2005,32(2):63-67.
[8]高喜龙,李照延,杨鹏飞,等.层序地层学在埕岛油田东斜坡隐蔽油气藏勘探中的应用[J].石油地球物理勘探,2002,37(2):210-214.
[9]林畅松,潘元林,肖建新,等.“构造坡折带”——断陷盆地层序分析和油气预测的重要概念[J].地球科学——中国地质大学学报,2000,25(3):260-266.
[10]程日辉,王璞,刘万洙.构造断阶对沉积的控制:来自地震、测井和露头的实例[J].沉积学报,2003,21(2):225-259.
[11]刘豪,王英民,王媛,等.大型坳陷湖盆坡折带的研究及其意义——以准噶尔盆地西北缘侏罗纪坳陷湖盆为例[J].沉积学报,2004,22(1):95-102.
[12]万琳.地震属性分析及其在储层预测中的应用[J].油气地球物理,2009,74(3):43-46.
[13]印兴耀,周静毅.地震属性优化方法综述[J].石油地球物理勘探,2005,40(4):482-489.
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