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四川盆地复兴地区侏罗系纹层型页岩油气富集主控因素

王道军 陈超 刘珠江 杨殊凡 刘苗苗 谢佳彤

王道军, 陈超, 刘珠江, 杨殊凡, 刘苗苗, 谢佳彤. 四川盆地复兴地区侏罗系纹层型页岩油气富集主控因素[J]. 石油实验地质, 2024, 46(2): 319-332. doi: 10.11781/sysydz202402319
引用本文: 王道军, 陈超, 刘珠江, 杨殊凡, 刘苗苗, 谢佳彤. 四川盆地复兴地区侏罗系纹层型页岩油气富集主控因素[J]. 石油实验地质, 2024, 46(2): 319-332. doi: 10.11781/sysydz202402319
WANG Daojun, CHEN Chao, LIU Zhujiang, YANG Shufan, LIU Miaomiao, XIE Jiatong. Main controlling factors for oil and gas enrichment in Jurassic laminated shale in Fuxing area of Sichuan Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(2): 319-332. doi: 10.11781/sysydz202402319
Citation: WANG Daojun, CHEN Chao, LIU Zhujiang, YANG Shufan, LIU Miaomiao, XIE Jiatong. Main controlling factors for oil and gas enrichment in Jurassic laminated shale in Fuxing area of Sichuan Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2024, 46(2): 319-332. doi: 10.11781/sysydz202402319

四川盆地复兴地区侏罗系纹层型页岩油气富集主控因素

doi: 10.11781/sysydz202402319
基金项目: 

中国石化科技部“十条龙”项目“涪陵地区侏罗系陆相页岩油气勘探评价技术” P21078-1

详细信息
    作者简介:

    王道军(1990—),男,硕士,工程师,从事页岩油气综合评价研究。E-mail: 18813089297@163.com

  • 中图分类号: TE122.3

Main controlling factors for oil and gas enrichment in Jurassic laminated shale in Fuxing area of Sichuan Basin

  • 摘要: 四川盆地复兴地区侏罗系发育多套富有机质页岩,多口井试获高产工业油气流。明确不同页岩岩相沉积储层特征及富集主控因素对勘探部署具有重要意义。基于岩心精细描述、实验分析及钻井勘探实践,开展了陆相地层细粒沉积岩岩相划分与对比、储层精细表征、油气藏类型及富集高产主控因素解剖,形成了以下几点认识:(1)复兴地区侏罗系发育自流井组东岳庙段一亚段、凉高山组二段下亚段两套半深湖相优质页岩,具有多层叠置、中等有机碳含量、纹层发育、源储一体及高气油比特征;两套目的层页岩岩性复杂,为此,建立了基于“颜色—有机碳含量—沉积结构—矿物成分”四元岩相划分方案,明确了灰黑色高碳粉砂纹层型黏土页岩为凉二段下亚段有利岩相,灰黑色高碳介屑纹层、粉砂介屑纹层型黏土页岩为东一亚段有利岩相,3种有利岩相在研究区横向分布稳定。(2)灰黑色高碳粉砂纹层、介屑纹层、粉砂介屑纹层型黏土页岩具有“多孔共生、大孔大喉、孔缝一体”的储集特征,储集物性好、渗透率高,利于页岩油气在孔—缝储集体系中高效储集流动。(3)东一亚段为凝析气藏,凉二段下亚段为挥发性油藏。(4)明确了陆相页岩油气富集主控因素:中高生烃潜力、强滞留率为纹层型页岩油气富集提供物质基础;良好的成烃—成岩—成储—成藏配置关系利于油气聚集成藏;微裂缝发育及合适的热演化程度利于烃类富集及流动;大型宽缓向斜及高压—超压条件利于烃类持续保存。

     

  • 图  1  四川盆地侏罗系半深湖相边界叠合地层埋深(a)、侏罗系综合柱状图(b)及典型地震剖面(c)

    Figure  1.  Burial depth of Jurassic semi-deep lacustrine boundary superimposed strata in Sichuan Basin (a), Jurassic comprehensive bar chart (b), and typical seismic profile (c)

    图  2  四川盆地侏罗系东一亚段(a)与凉二下亚段(b)沉积相平面分布

    Figure  2.  Plane map of sedimentary facies of first sub-section of Dongyuemiao section of Ziliujing Formation (a) and lower sub-section of second section of Lianggaoshan Formation (b) of Jurassic in Sichuan Basin

    图  3  四川盆地侏罗系陆相富有机质页岩发育模式

    Figure  3.  Development pattern of organic-rich terrestrial shale in Jurassic, Sichuan Basin

    图  4  四川盆地复兴地区侏罗系陆相页岩储集空间类型

    Figure  4.  Reservoir space types of Jurassic terrestrial shale in Fuxing area of Sichuan Basin

    图  5  四川盆地复兴地区侏罗系陆相页岩储集空间孔径分布

    Figure  5.  Pore size distribution of Jurassic terrestrial shale reservoirs in Fuxing area of Sichuan Basin

    图  6  四川盆地复兴地区侏罗系不同岩相孔渗特征

    Figure  6.  Pore and permeability characteristics of different lithofacies in Jurassic of Fuxing area of Sichuan Basin

    图  7  四川盆地复兴地区凉二下亚段(a)与东一亚段(b)页岩地质—工程双甜点评价

    Figure  7.  Double sweet spot evaluation of geology and engineering of shale in lower sub-section of second member of Lianggaoshan Formation (a) and first sub-section of Dongyuemiao section of Ziliujing Formation (b) of Fuxing area in Sichuan Basin

    图  8  四川盆地复兴地区侏罗系凉二下亚段(a)、自流井组东一亚段(b)不同岩相地质参数对比

    Figure  8.  Comparison of geological parameters of different lithofacies in lower sub-section of second section of Lianggaoshan Formation (a) and first sub-section of Dongyuemiao section of Ziliujing Formation (b) of Fuxing area in Sichuan Basin

    图  9  四川盆地复兴地区侏罗系自流井组东一亚段岩相展布

    Figure  9.  Lithological distribution of first sub-section of Dongyuemiao section of Ziliujing Formation of Fuxing area of Sichuan Basin

    图  10  四川盆地复兴地区侏罗系凉二下亚段岩相展布

    Figure  10.  Lithological distribution of lower sub-section of second section of Lianggaoshan Formation in Fuxing area of Sichuan Basin

    图  11  四川盆地复兴地区侏罗系陆相页岩成烃—成岩—成储—成藏配置关系

    Figure  11.  Configuration of hydrocarbon generation, diagenesis, reservoir formation and accumulation of terrestrial shale in Jurassic, Fuxing area, Sichuan Basin

    图  12  四川盆地复兴地区侏罗系压力系统与典型油气藏剖面

    Figure  12.  Jurassic pressure system and typical oil and gas reservoir profiles in Fuxing area of Sichuan Basin

    表  1  四川盆地复兴地区侏罗系陆相地层岩相特征

    Table  1.   Lithological characteristics of Jurassic terrestrial strata in Fuxing area of Sichuan Basin

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  • 收稿日期:  2023-12-08
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