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    焦石坝背斜上部气层开发特征及影响因素

    李东晖 刘光祥 聂海宽 胡建国 陈刚 李倩文

    李东晖, 刘光祥, 聂海宽, 胡建国, 陈刚, 李倩文, 2019. 焦石坝背斜上部气层开发特征及影响因素. 地球科学, 44(11): 3653-3661. doi: 10.3799/dqkx.2019.212
    引用本文: 李东晖, 刘光祥, 聂海宽, 胡建国, 陈刚, 李倩文, 2019. 焦石坝背斜上部气层开发特征及影响因素. 地球科学, 44(11): 3653-3661. doi: 10.3799/dqkx.2019.212
    Li Donghui, Liu Guangxiang, Nie Haikuan, Hu Jianguo, Chen Gang, Li Qianwen, 2019. Development Characteristics and Influencing Factors of Upper Gas Reservoir in Jiaoshiba Anticline. Earth Science, 44(11): 3653-3661. doi: 10.3799/dqkx.2019.212
    Citation: Li Donghui, Liu Guangxiang, Nie Haikuan, Hu Jianguo, Chen Gang, Li Qianwen, 2019. Development Characteristics and Influencing Factors of Upper Gas Reservoir in Jiaoshiba Anticline. Earth Science, 44(11): 3653-3661. doi: 10.3799/dqkx.2019.212

    焦石坝背斜上部气层开发特征及影响因素

    doi: 10.3799/dqkx.2019.212
    基金项目: 

    国家重大科技专项 2016ZX05061-001

    国家自然科学基金项目 41872124

    详细信息
      作者简介:

      李东晖(1991-), 男, 工程师, 硕士, 主要从事非常规油气开发研究工作

    • 中图分类号: P618

    Development Characteristics and Influencing Factors of Upper Gas Reservoir in Jiaoshiba Anticline

    • 摘要: 为研究上部气层(⑥~⑨小层)与下部气层(①~⑤小层)气井开发效果存在明显差异的原因,结合压裂数据、现场生产动态、可采储量预测和地质分析等手段,评价上部气层和下部气层在页岩岩性、地化特征和储层物性等方面存在的差异.结合气井生产特征分析,认为上部气层可能存在烃源岩内的一次运移,导致上部气层构造高部位天然气富集程度高,这是造成上部气层评价井开发效果差异以及上部气层、下部气层页岩气井差异的主要原因.焦石坝背斜高部位为上部气层开发有利区,但受技术工艺水平和气价控制,其有效开发范围需要根据页岩气井的可采储量、经济性来圈定,结合上部气层页岩气井稳产能力及可采储量评价,认为上部气层开发应从构造高部位开始,逐步向低部位扩展.

       

    • 图  1  焦石坝背斜埋深图

      Fig.  1.  The buried depth of Jiaoshiba anticline

      图  3  A-S1井穿行轨迹

      Fig.  3.  Traversing track of Well A-S1

      图  4  上部气层评价井及邻井初期测试情况对比

      Fig.  4.  Comparison of initial test conditions of upper gas reservoir evaluation wells and adjacent wells

      图  5  上部气层评价井初期压降对比

      Fig.  5.  Comparison of initial pressure drop in the upper gas reservoir evaluation well

      图  6  焦页1井五峰组-龙马溪组显微镜下纹层特征

      a.龙马溪组,2 345.49 m,纹层状粉砂质碳质粘土岩,⑧小层;b.龙马溪组,2 363.4 m,纹层状云质碳质粘土岩,⑦小层; c.龙马溪组,2 391.95 m,含粉砂硅质页岩,③小层;d.五峰组,2 411.05 m,含放射虫含碳硅质页岩,①小层

      Fig.  6.  Characteristics of the lamina under the microscope of Wufeng-Longmaxi Formations of Well JY1

      图  2  焦页1井五峰组-龙马溪组含气页岩小层划分

      Jin et al.(2018)修改

      Fig.  2.  Division of gas-bearing shale in the Wufeng-Longmaxi Formations of Well JY

      图  7  焦页1井五峰组-龙马溪组岩心水平渗透率统计

      Fig.  7.  Core permeability statistics of Wufeng-Longmaxi Formations in Well JY1

      图  8  D-S1井生产动态

      Fig.  8.  Production dynamics of Well D-S1

      表  1  不同井台气井累产气及可采储量

      Table  1.   Gas production and recoverable reserves of gas wells in different well bays

      平台 井号 气层 水平段长度(m) 穿行小层 WF2-LM4笔石带页岩占比(%) 压裂段数 稳产期累产气量(108 m3) 单段平均稳产期累产气量(108 m3) 可采储量(108 m3) 单段平均可采储量(108 m3)
      A A-S1 上部 780 ⑦⑧ LM5-LM8 11 0.36 0.032 0.63 0.057
      A-1 下部 1 357 ①~③ WF2-LM4 14 0.93 0.067 1.57 0.112
      A-2 下部 1 495 ①~④ WF2-LM4 19 0.94 0.050 1.45 0.076
      B B-S1 上部 1 502 ⑦⑧ LM5-LM8 18 0.28 0.016 0.53 0.029
      B-1 下部 1 369 ③④ LM1-LM4 17 0.46 0.027 0.87 0.051
      B-2 下部 1 476 ③④⑤ LM1-LM5 17 0.33 0.020 0.61 0.036
      C C-S1 上部 1 487 ⑦⑧ LM5-LM8 18 0.32 0.018 0.52 0.029
      C-S2 上部 1 475 ⑦⑧ LM5-LM8 17 0.37 0.022 0.61 0.036
      C-1 下部 1 280 ①~③ WF2-LM4 17 1.22 0.072 1.73 0.102
      C-2 下部 1 267 ①~④ WF2-LM4 16 0.81 0.051 1.26 0.079
      D D-S1 上部 708 ⑥⑦⑧ LM5-LM8 10 0.19 0.019 0.34 0.034
      D-1 下部 1 476 ①~④ WF2-LM4 18 0.88 0.049 1.29 0.072
      D-2 下部 1 415 ①~④ WF2-LM4 18 0.90 0.050 1.41 0.078
      下载: 导出CSV
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