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准噶尔盆地南缘柴窝堡凹陷泥页岩地球化学和矿物学特征研究

熊金红 梁明亮 曹占元 王宗秀 郑建京 王作栋

熊金红, 梁明亮, 曹占元, 等, 2017. 准噶尔盆地南缘柴窝堡凹陷泥页岩地球化学和矿物学特征研究. 地质力学学报, 23 (4): 585-593.
引用本文: 熊金红, 梁明亮, 曹占元, 等, 2017. 准噶尔盆地南缘柴窝堡凹陷泥页岩地球化学和矿物学特征研究. 地质力学学报, 23 (4): 585-593.
XIONG Jinhong, LIANG Mingliang, CAO Zhanyuan, et al., 2017. THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF SHALES IN CHAIWOBU DEPRESSION, SOUTHERN MARGIN OF JUNGGAR BASIN. Journal of Geomechanics, 23 (4): 585-593.
Citation: XIONG Jinhong, LIANG Mingliang, CAO Zhanyuan, et al., 2017. THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF SHALES IN CHAIWOBU DEPRESSION, SOUTHERN MARGIN OF JUNGGAR BASIN. Journal of Geomechanics, 23 (4): 585-593.

准噶尔盆地南缘柴窝堡凹陷泥页岩地球化学和矿物学特征研究

基金项目: 

国家自然科学基金项目 41072106

中国科学院西部行动计划项目 KZCX2-XB3-12

详细信息
    作者简介:

    熊金红(1986-), 男, 在读博士研究生, 研究方向为构造地质学.E-mail:278031772@qq.com

  • 中图分类号: P593

THE GEOCHEMICAL AND MINERALOGICAL CHARACTERISTICS OF SHALES IN CHAIWOBU DEPRESSION, SOUTHERN MARGIN OF JUNGGAR BASIN

  • 摘要: 利用XRD、Rock-eval和气相色谱—质谱仪对准格尔南缘柴窝堡凹陷上石炭统、上二叠统及下侏罗统的泥页岩进行了地球化学和矿物学特征分析。有机地球化学实验结果指示,柴窝堡凹陷石炭纪至二叠纪经历了较长时期的淡水—微咸水沉积环境,有机质来源具有相似的母源输入特征,干酪根类型具有Ⅱ型混合母质特征;有机质热演化特征表明,下侏罗统泥页岩处于低熟阶段,上石炭统与上二叠统泥页岩具有机质丰度较高、有机质类型丰富、热演化处于成熟—高成熟阶段等特点;矿物学特征显示,上二叠统泥页岩长石、石英等脆性矿物含量为73%,粘土矿物次之,指示其脆性指数较高,具有较好的可压裂性和粘土表面吸附性。结合前人认识,预测该段泥页岩中可能蕴藏着一定规模的页岩气资源,具有较好的页岩气资源前景和勘探潜力。

     

  • 图  1  柴窝堡凹陷构造单元划分及样品采集点

    Figure  1.  Structural unit division and sample collection sites in Chaiwobu Depression

    图  2  泥页岩样品Pr/C17与Ph/C18直角对数图

    Figure  2.  Crossplot of Pr/C17 and Ph/C18 of shale samples

    图  3  泥页岩样品饱和烃总离子流图

    Figure  3.  Total ion current of saturated hydrocarbon of shale samples

    图  4  烃源岩萜烷参数特征

    Figure  4.  Characteristics of terpane parameters in source rock

    图  5  泥页岩样品甾烷分布三角图

    Figure  5.  Triangular chart of the distribution of sterane of shale samples

    图  6  研究区石炭系—侏罗系泥页岩全岩矿物组成分布图

    Figure  6.  Composition and distribution of the minerals in shales in Carboniferous-Jurassic of the study area

    表  1  样品的基础地球化学参数

    Table  1.   Basic geochemical parameters of the shale samples

    样品层位岩性TOC/%TMAX/℃S1/(mg/g)S2/(mg/g)PI/(S1/(S1+S2))IH/(mg/g)IO/(mg/g)
    CWB-3J1b褐色泥页岩3.274360.036.150.01188110
    CWB-2P2h碳色泥岩0.314490.010.020.656135
    CWB-1P1j炭质泥岩0.304480.080.030.2810157
    CWB-5C2sh灰质泥岩0.935380.010.000.81067
    CWB-4C2sh灰质泥岩0.294460.010.000.660121
    下载: 导出CSV

    表  2  样品氯仿沥青“A”族组成特征

    Table  2.   Composition characteristics of chloroform bitumen "A" group samples

    样品层位饱和烃/%芳烃/%非烃/%沥青质/%非+沥/%饱芳比非沥比
    CWB-03J1b12.071.4581.135.3586.488.3215.16
    CWB-02P2h24.735.4943.4126.3769.784.501.65
    CWB-01P1j14.0613.5327.0745.3472.411.040.60
    CWB-05C2sh3.232.1568.8225.8194.621.502.67
    CWB-04C2sh16.888.4442.8631.8279.862.001.35
    下载: 导出CSV

    表  3  正构烷烃和类异戊二烯烷烃生物标志化合物参数

    Table  3.   Biomarker parameters of n-alkanes and isoprenoid

    样品层位碳数峰型主峰Pr/PhPr/nC17Ph/nC18∑C22-/∑C23+OEP25-29
    CWB-03J1b12~33双峰17/251.440.300.260.674.04
    CWB-02P2h13-31双峰17/231.170.700.681.191.13
    CWB-01P1j14-32双峰17/271.000.730.720.181.04
    CWB-05C2sh14-31双峰17/251.030.870.861.020.90
    CWB-04C2sh14-30双峰17/251.030.600.711.381.13
    下载: 导出CSV

    表  4  烃源岩萜烷和甾类化合物参数

    Table  4.   Parameters of terpane compounds and sterane compounds in source rock

    样品
    编号
    萜烷甾烷
    ∑三环萜烷/
    ∑藿烷
    Ts/TmG/C30HC3122S/
    (S+R)
    C3222S/
    (S+R)
    C29H/
    C30H
    C29ββ/
    (αα+ββ)
    C2920S/
    (S+R)
    相对含量/%
    C27C28C29
    CWB-0300.130.010.080.600.370.340.1532.5924.4442.96
    CWB-022.590.890.090.600.670.680.400.4745.7424.4729.79
    CWB-011.260.850.160.560.630.760.490.5026.4432.1841.38
    CWB-053.020.860.110.580.670.780.400.4344.4422.2233.33
    CWB-043.080.890.110.590.600.790.400.4539.7126.4733.82
    下载: 导出CSV
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  • 收稿日期:  2017-02-10
  • 刊出日期:  2017-08-28

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