Sub-sag sorting and petroleum distribution in Beibuwan Basin
-
摘要: 北部湾盆地是典型的裂谷盆地,整体上可以划分为15个洼陷和早衰型、继承型、晚成型3种洼陷类型,15个洼陷可定性评价划分为四级.继承型洼陷是烃源岩分布和发育最有利的洼陷类型,其控制了富生烃洼陷的发育和分布;富生烃洼陷控制了油气的平面分布,已发现的油气藏均分布在富生烃洼陷的周缘.断裂及其活动性控制了油气藏的类型和垂向分布,油气藏主要以断裂封堵的油气藏为主,并沿主要断裂分布.沿长期继承性活动的断裂,形成"垂向多层系、多类型油藏叠置,横向沿断层分布"的复式油气聚集模式;对于早期活动强,后期活动弱的断裂,油气主要在深层流沙港组三段聚集,形成深层断层反向遮挡的油气聚集模式.Abstract: The Beibuwan Basin is a typical rift basin.It is divided into 15 sub-sags of 3 types (presenile,inhe-rited and late-formed).These 15 sub-sags are evaluated as 4 grades.The inherited sub-sags are most favorable for source rock generation and distribution.The discovered reservoirs are mainly located around petroliferous sub-sags which are controlled by the inherited sub-sags.Faults control the type and vertical distribution of reservoirs which are mainly sealed by faults and distribute along main faults.A complex hydrocarbon accumulation model,which is superimposed vertically and distributed along faults horizontally,is developed along inherited long-term active faults.In the presenile sub-sags,petroleum mainly accumulates in the 3rd member of the Liushagang Formation and is sealed by antithetic faults.
-
Key words:
- sub-sag division /
- sub-sag sorting /
- petroleum distribution /
- rift basin /
- Beibuwan Basin
-
[1] 茹克.裂陷盆地半地堑分析[J].中国海上油气(地质),1990,4(6):1-10. [2] Morely C K,Nelson R A,Patton T L,et al.Transfer zone in the East African rift system and their relevance to hydrocarbon exploration in rifts[J].AAPG Bulletin,1990,74(8):1234-1253. [3] 朱伟林,米立军.中国海域含油气盆地图集[M].北京:石油工业出版社,2010:144-158. [4] 李春荣,张功成,梁建设,等.北部湾盆地断裂构造特征及其对油气的控制作用[J].石油学报,2012,33(2):195-203. [5] 胡望水,吴婵,梁建设,等.北部湾盆地构造迁移特征及对油气成藏的影响[J].石油与天然气地质,2011,32(6):920-927. [6] 张君龙,蒙启安,漆家福.断陷盆地多期构造变形特征与油气聚集:以海拉尔—塔木察格盆地南贝尔凹陷为例[J].石油实验地质,2012,34(4):368-375. [7] 李思田,林畅松,张启明,等.南海北部大陆边缘盆地幕式裂陷的动力过程及10 Ma以来的构造事件[J].科学通报,1998,48(8):797-810. [8] 林畅松,张燕梅,李思田,等.中国东部中新生代断陷盆地幕式裂陷过程的动力学响应和模拟模型[J].地球科学——中国地质大学学报,2004,29(5):583-588. [9] 焦养泉,李思田,解习农,等.多幕裂陷作用的表现形式:以珠江口盆地西部及其外围地区为例[J].石油实验地质,1997,19(3):222-227. [10] Hardy S.Numerical modeling of the response to variable stretching rate of a domino fault block system[J].Marine and Petro-leum Geology,1993,10(2):145-152. [11] 茹克.南海北部边缘叠合式盆地的发育及其大地构造意义[J].石油与天然气地质,1988,9(1):22-30. [12] 朱伟林,吴国暄,黎明碧.南海北部陆架北部湾盆地古湖泊与烃源条件[J].海洋与湖沼,2004,35(1):8-14. [13] 包建平,刘玉瑞,朱翠山,等.北部湾盆地原油地球化学特征与成因类型[J].石油与天然气地质,2007,28(2):293-298. [14] 黄正吉,龚再升,孙玉梅,等.中国近海新生代陆相烃源岩与油气生成[M].北京:石油工业出版社,2011:61-74. [15] 黄保家,黄合庭,吴国瑄,等.北部湾盆地始新统湖相富有机质页岩特征及成因机制[J].石油学报,2012,33(1):25-31. [16] 罗群.断裂控烃理论的概念、原理、模式与意义[J].石油勘探与开发,2010,37(3):316-324. [17] 张功成.渤海海域构造格局与富生烃凹陷分布[J].中国海上油气(地质),2000,14(2):93-98. [18] Lezzar K E,Tiercelin J J,Le Turdu C,et al.Control of normal fault interaction on the distribution of major Neogene sedimentary depocenters,Lake Tanganyika,East African rift[J].AAPG Bulletin,2002,86(6):1027-1059. [19] 朱伟林,江文荣.北部湾盆地涠西南凹陷断裂与油气藏[J].石油学报,1998,19(3):6-10. [20] 于俊吉,罗群,张多军,等.北部湾盆地海南福山凹陷断裂特征及其对油气成藏的控制作用[J].石油实验地质,2004,26(3):241-248. [21] 罗群.断裂带的输导与封闭性及其控藏特征[J].石油实验地质,2011,33(5):474-479. [22] 罗群,庞雄奇.海南福山凹陷顺向和反向断裂控藏机理及油气聚集模式[J].石油学报,2008,29(3):363-367.
点击查看大图
计量
- 文章访问数: 1245
- HTML全文浏览量: 41
- PDF下载量: 866
- 被引次数: 0