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松辽盆地齐家地区高台子致密油层包裹体古流体压力特征及其地质意义

斯尚华 赵靖舟 蒙启安 曹青 吴伟涛 张宇航

斯尚华, 赵靖舟, 蒙启安, 等, 2018. 松辽盆地齐家地区高台子致密油层包裹体古流体压力特征及其地质意义. 地质力学学报, 24 (1): 51-59. DOI: 10.12090/j.issn.1006-6616.2018.24.01.006
引用本文: 斯尚华, 赵靖舟, 蒙启安, 等, 2018. 松辽盆地齐家地区高台子致密油层包裹体古流体压力特征及其地质意义. 地质力学学报, 24 (1): 51-59. DOI: 10.12090/j.issn.1006-6616.2018.24.01.006
SI Shanghua, ZHAO Jingzhou, MENG Qi'an, et al., 2018. THE FLUID INCLUSION PALEO PRESSURE CHARACTERISTICS AND GEOLOGICAL IMPLICATIONS OF GAOTAIZI TIGHT RESERVOIR IN QIJIA AREA OF SONGLIAO BASIN. Journal of Geomechanics, 24 (1): 51-59. DOI: 10.12090/j.issn.1006-6616.2018.24.01.006
Citation: SI Shanghua, ZHAO Jingzhou, MENG Qi'an, et al., 2018. THE FLUID INCLUSION PALEO PRESSURE CHARACTERISTICS AND GEOLOGICAL IMPLICATIONS OF GAOTAIZI TIGHT RESERVOIR IN QIJIA AREA OF SONGLIAO BASIN. Journal of Geomechanics, 24 (1): 51-59. DOI: 10.12090/j.issn.1006-6616.2018.24.01.006

松辽盆地齐家地区高台子致密油层包裹体古流体压力特征及其地质意义

doi: 10.12090/j.issn.1006-6616.2018.24.01.006
基金项目: 

国家自然科学基金 41372148

西安石油大学青年科技创新基金 2014BS06

详细信息
    作者简介:

    斯尚华(1981-), 男, 博士, 讲师, 研究方向油气成藏地质。Email:sishanghua0724@qq.com

  • 中图分类号: TE122

THE FLUID INCLUSION PALEO PRESSURE CHARACTERISTICS AND GEOLOGICAL IMPLICATIONS OF GAOTAIZI TIGHT RESERVOIR IN QIJIA AREA OF SONGLIAO BASIN

  • 摘要: 流体包裹体热动力学(PVTx)模拟应用包裹体组分、均一温度和气液比,结合模拟软件可以恢复包裹体被捕获时的古流体压力,以松辽盆地齐家地区高台子致密油层为例,应用激光共聚焦扫描显微镜、显微荧光和显微测温等分析,划分了油气充注幕次并恢复了各幕次流体古压力,该应用有效区分了不同幕次流体古压力特征。研究结果表明:齐家地区高台子油层存在两期油气充注,第1期发生在晚白垩世嫩江晚期(79~75 Ma),主要充注发黄色荧光的原油,古流体压力为16.13~16.97 MPa;第2期发生在晚白垩世明水期(69~65 Ma),主要充注发黄绿色、蓝绿色荧光颜色的原油,古流体压力为22.14~26.13 MPa。研究结果有助于深化勘探区油气成藏规律的认识。

     

  • 图  1  研究区构造位置及采样井分布

    Figure  1.  Structure location and sampling well distribution in the study area

    图  2  齐家地区高台子油层代表性油包裹体荧光颜色及其对应荧光光谱

    a—英X58井, 2078.0 m, K1qn2+3, 粉砂岩, 石英颗粒内裂纹中检测到大量发黄绿色(a1)和蓝绿色(a2)荧光油包裹体; b—金28井, 2223.3 m, K1qn2+3, 粉砂岩, 石英颗粒内裂纹中检测到大量发黄绿色(b1)和蓝绿色(b2)荧光油包裹体; c—齐平1井, 2071.0 m, K1qn2+3, 粉砂岩, 方解石胶结物中检测到大量发蓝绿色(c1)和黄色荧光(c2)的油包裹体(黄色、黄绿色、蓝绿色分别指示第1、第2、第3幕次油充注)

    Figure  2.  The fluorescent color and corresponding fluorescence spectra of representative oil inclusions in Gaotaizi reservoir in Qijia Area

    图  3  齐家地区高台子油层油包裹体(a)和共生盐水包裹体(b)均一温度

    Figure  3.  The homogenization temperatures of oil inclusions(a)and its coeval aqueous inclusions(b)in Gaotaizi reservoir in Qijia Area

    图  4  PVTx热动力学模拟原理图(据参考文献[16]修改)

    Figure  4.  The Schematic diagram of PVTx thermal dynamics simulation

    图  5  油包裹体激光共聚焦显微镜连续扫描的二维切片

    Figure  5.  The two-dimensionsional slices of continuous scanning of oil inclusions by CLSM

    图  6  齐家地区齐平1井高台子油层流体包裹体古压力模拟结果及P-T相图

    Figure  6.  The PVTx simulation results and P-T diagram of Qiping-1 fluid inclusion assemblages in Gaotaizi reservoir in Qijia Area

    图  7  齐家地区高台子油层油气充注时期

    Figure  7.  The charging stages of hydrocarbon in Gaotaizi reservoir in Qijia Area

    图  8  齐家地区过金34—萨952井测线构造演化剖面

    Figure  8.  Tectonic evolution section of Jin34~Sa952 well line in Qijia area

    表  1  齐家地区高台子油层油包裹体荧光参数

    Table  1.   The fluorescence parameters of oil inclusions in Gaotaizi reservoir in Qijia Area

    烃类包裹体 荧光颜色 λmax/nm Q QF535
    油包裹体 黄色 580.9~585.4 1.17~1.40 2.45~2.92
    油包裹体 黄绿 520.6~545.4 0.37~0.77 1.25~1.77
    油包裹体 蓝绿 489.3~519.7 0.12~0.50 0.50~1.24
    下载: 导出CSV

    表  2  共聚焦扫描显微镜精确测定的部分油包裹体气液比

    Table  2.   The gas-liquid ratios of part of the fluid inclusions by CLSM

    井号 深度/m 层位 岩性 总体积/um3 气泡体/um3 气液比/%
    齐平1 1952.69 高台子 粉砂岩 552.71 19.72 3.7
    齐平1 1952.69 高台子 粉砂岩 651.25 47.12 7.8
    齐平1 2071 高台子 粉砂岩 698.14 41.38 6.3
    齐平1 2071 高台子 粉砂岩 889.56 40.74 4.8
    金23 2205.3 高台子 细砂岩 519.56 27.55 5.6
    金23 2205.3 高台子 细砂岩 700.74 39.67 6
    英X53 2078 高台子 粉砂岩 1058.44 61.79 6.2
    英X53 2078 高台子 粉砂岩 587.39 35.85 6.5
    古94 2193.6 高台子 粉砂岩 696.48 40.04 6.1
    古94 2193.6 高台子 粉砂岩 540.15 37.22 7.4
    古94 2198.5 高台子 粉砂岩 575.14 39.13 7.4
    金191 1839.7 高台子 细砂岩 758.13 40.20 5.6
    金191 1854.5 高台子 粉砂岩 368.86 18.90 5.4
    金34 2125 高台子 粉砂岩 324.02 22.61 7.5
    金34 2135 高台子 粉砂岩 532.01 37.12 7.5
    龙201 1935.07 高台子 粉砂岩 404.88 21.83 5.7
    金28 2217.4 高台子 粉砂岩 528.13 28.48 5.7
    下载: 导出CSV

    表  3  模拟过程中原油样品成分组成表

    Table  3.   The Composition of crude oil sample in simulation

    组分 摩尔组成百分比/% 组分 摩尔组成百分比/%
    CO2 0.84 n-C5 3.920
    N2 0 C6 1.760
    C1 26.570 C7 4.257
    C2 10.740 C8 3.790
    C3 9.270 C9 3.375
    i-C4 0.520 C10 5.680
    n-C4 6.300 C11+ 21.718
    i-C5 1.260
    下载: 导出CSV

    表  4  齐家地区高台子油层部分流体包裹体组合PVTx模拟参数和结果

    Table  4.   The PVTx simulation parameters and results of part fluid inclusion assemblages in Gaotaizi reservoir in Qijia Area

    井号 层位 深度/m 第1幕 第2幕 第3幕
    G/L/% Tho/Tha P/MPa Pc G/L/% Tho/Tha P/MPa Pc G/L/% Tho/Tha P/MPa Pc
    齐平1 高台子 1952.69 3.7 68.2/86.3 16.97 1.29 7.8 89.5/101.0 23.86 1.28
    齐平1 高台子 2071 6.3 85.9/107.1 24.75 1.37 4.8 95.7/133.4 24.02 1.33
    金28 高台子 2205.3 5.6 80.6/106.2 25.54 1.34 6 105.3/137.3 24.93 1.35
    英x58 高台子 2078 6.2 86.2/107.4 24.38 1.28 6.5 104.3/131.4 24.89 1.31
    古94 高台子 2193.6 6.1 84.5/107.8 25.35 1.27 7.4 107.8/129.2 24.91 1.03
    金191 高台子 1839.7 5.6 85.8/107.5 22.59 1.28
    金34 高台子 2125 7.5 88.1/102.4 24.59 1.37
    龙201 高台子 1935.07 3.2 62.7/81.5 16.13 1.21
    金191 高台子 1854.5 5.2 82.1/106.1 22.94 1.31
    古94 高台子 2198.50 7.4 104.0/127.9 25.98 1.26
    金34 高台子 2135.0 7.5 79.3/107.0 24.96 1.30
    金28 高台子 2217.40 5.7 102.0/137.9 26.13 1.25
    注:G/L—气液比; Tho/Tha—油包裹体/同期盐水包裹体均一温度; Pc古压力系数计算值; P—热动力学模拟获得的古压力
    下载: 导出CSV
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  • 收稿日期:  2017-03-22
  • 修回日期:  2017-12-13
  • 刊出日期:  2018-02-01

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