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渤海湾盆地辽东湾地区辽西凸起中北段太古宇潜山成储规律及主控因素

郭龙龙 王峻 张春光 陈洪德

郭龙龙, 王峻, 张春光, 陈洪德. 渤海湾盆地辽东湾地区辽西凸起中北段太古宇潜山成储规律及主控因素[J]. 石油实验地质, 2024, 46(1): 46-53. doi: 10.11781/sysydz202401046
引用本文: 郭龙龙, 王峻, 张春光, 陈洪德. 渤海湾盆地辽东湾地区辽西凸起中北段太古宇潜山成储规律及主控因素[J]. 石油实验地质, 2024, 46(1): 46-53. doi: 10.11781/sysydz202401046
GUO Longlong, WANG Jun, ZHANG Chunguang, CHEN Hongde. Reservoir-forming rules and main controlling factors of Archean buried hill reservoir of middle to northern Liaoxi Uplift in Liaodong Bay area in Bohai Bay Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(1): 46-53. doi: 10.11781/sysydz202401046
Citation: GUO Longlong, WANG Jun, ZHANG Chunguang, CHEN Hongde. Reservoir-forming rules and main controlling factors of Archean buried hill reservoir of middle to northern Liaoxi Uplift in Liaodong Bay area in Bohai Bay Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(1): 46-53. doi: 10.11781/sysydz202401046

渤海湾盆地辽东湾地区辽西凸起中北段太古宇潜山成储规律及主控因素

doi: 10.11781/sysydz202401046
基金项目: 

国家科技重大专项“渤海海域勘探新领域及关键技术研究” 2016ZX05024-003

中海石油(中国)有限公司“七年行动计划”重大科技专项“渤海油田上产4000万吨新领域勘探关键技术” CNOOC-KJ135ZDXM36TJ08TJ

详细信息
    作者简介:

    郭龙龙(1985-), 男, 博士, 工程师, 从事石油地质研究。E-mail: 370224565@qq.com

  • 中图分类号: TE122.2

Reservoir-forming rules and main controlling factors of Archean buried hill reservoir of middle to northern Liaoxi Uplift in Liaodong Bay area in Bohai Bay Basin

  • 摘要: 渤海湾盆地是我国潜山油气资源勘探的重点地区之一,为了打开该区太古宇潜山勘探新局面,对辽东湾地区太古宇潜山成储规律及主控因素进行了研究。基于薄片、测井、地震等钻井资料,分析了辽西凸起中北段太古宇潜山岩石学特征、岩石展布特征、储层特征、构造演化和裂缝特征。研究表明,辽东湾地区辽西凸起太古宇潜山由片麻岩类、变质花岗岩类和碎裂岩类等组成,并以片麻岩为主;现今构造呈南高北低特征,北部地层保存相对完好,南部地层上部具剥蚀迹象,岩浆岩比例自北向南逐渐增高。该区太古宇变质岩以裂缝型储层为主,岩石中暗色矿物含量与岩石脆性呈反比关系;构造变形导致裂缝发育,太古宇潜山发育三组构造裂缝,即燕山早期受到NE向强剪切和SN向强挤压的应力方向发育NNE向剪裂缝和SN向张裂缝,喜马拉雅早期受到NW向强伸展和NE向弱剪切的应力方向发育NE向剪裂缝和北东向张裂缝,喜马拉雅晚期受到NE向强剪切和NW向弱伸展的应力方向发育EW向张裂缝及NE向和NW向共轭剪裂缝,区域构造差异活动程度控制了裂缝的有效性;燕山运动是变质岩储层主要造缝期,喜马拉雅期裂缝以方解石充填、半充填为主,后期经溶蚀可构成有效裂缝。

     

  • 图  1  渤海湾盆地辽东湾地区辽西凸起位置及储层综合柱状图

    Figure  1.  Location map and reservoir comprehensive histogram of Liaoxi Uplift in Liaodong Bay area, Bohai Bay Basin

    图  2  渤海湾盆地辽东湾地区辽西凸起JZ25-C区块变质岩岩性测井曲线交汇图

    图中黑色数字表示钻井号。

    Figure  2.  Intersection of metamorphic rock lithology logging curves in JZ 25-C block in Liaoxi Uplift, Liaodong Bay area, Bohai Bay Basin

    图  3  渤海湾盆地辽东湾地区辽西凸起太古宇岩心特征

    a.JZ25-C-2井,2 020.25~2 020.38 m,二长片麻岩;b.JZ25-C-2井,1 751.44 m,斜长片麻岩;c.JZ25-C-5井,1 801.60~1 801.75 m,花岗片麻岩;d.JZ25-C-2井,1 751.14~1 751.34 m,角闪花岗片麻岩;e.JZ25-B-2井,2 165~2 170 m,碎裂花岗岩;f.JZ20-A-3井,2 697.69 m,花岗质碎裂岩,颗粒破碎,裂缝发育;g.JZ20-A-3井,2 214.9 m,混合岩化片麻岩;h.JZ20-A-4井,2 668.7 m,混合岩;i.JZ20-A-5井,2 346.6 m,碱长混合片麻岩;j.JZ25-B-1井,2 923.1 m,混合花岗岩;k.JZ25-C-2井,2 020.51 m,碎裂化二长花岗岩;l.JZ20-A-5井,2 350.65 m,黑云二长花岗岩;m.JZ20-A-5井,2 351.41 m,变质花岗岩;n.JZ20-A-12D井,2 798.2~2 800 m,辉绿岩。

    Figure  3.  Core characteristics of Archean buried hills in Liaoxi Uplift, Liaodong Bay area, Bohai Bay Basin

    图  4  渤海湾盆地辽东湾地区辽西凸起太古宇岩石分布特征

    Figure  4.  Distribution characteristics of Archean rocks in Liaoxi Uplift, Liaodong Bay area, Bohai Bay Basin

    图  5  渤海湾盆地辽东湾地区辽西凸起太古宇储集空间及裂缝叠加特征

    a.JZ25-B-2,1 956 m,碎裂岩裂缝发育,黑云母和钙质充填;b.JZ25-B-2,1 954 m,长英质裂缝均为钙质(先)和硅质(后) 充填;c.JZ25-B-2,1 960 m,裂缝钙质充填,云母溶蚀孔;d.JZ20-A-3井,2 102.62 m,斑状花岗岩;e.JZ20-A-7D井,2 691.57 m,花岗质碎裂岩;f.JZ20-A-4井,2 957.11 m,碎裂混合片麻岩。

    Figure  5.  Characteristics of Archean reservoir space and superposition of fractures in Liaoxi Uplift, Liaodong Bay area, Bohai Bay Basin

    图  6  渤海湾盆地辽东湾地区辽西凸起构造演化应力分布及裂缝走向

    Figure  6.  Stress distribution and crack direction of structural evolution of Liaoxi Uplift, Liaodong Bay area, Bohai Bay Basin

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  • 收稿日期:  2023-11-07
  • 修回日期:  2024-01-05
  • 刊出日期:  2024-01-28

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