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陕西省富油煤资源潜力及开发建议

马丽 王双明 段中会 杨甫 付德亮 贺丹 张丽维

马丽,王双明,段中会,等.陕西省富油煤资源潜力及开发建议[J].煤田地质与勘探,2022,50(2):1−8 doi: 10.12363/issn.1001-1986.21.10.0592
引用本文: 马丽,王双明,段中会,等.陕西省富油煤资源潜力及开发建议[J].煤田地质与勘探,2022,50(2):1−8 doi: 10.12363/issn.1001-1986.21.10.0592
MA Li,WANG Shuangming,DUAN Zhonghui,et al.Potential of oil-rich coal resources in Shaanxi Province and its new development suggestion[J].Coal Geology & Exploration,2022,50(2):1−8 doi: 10.12363/issn.1001-1986.21.10.0592
Citation: MA Li,WANG Shuangming,DUAN Zhonghui,et al.Potential of oil-rich coal resources in Shaanxi Province and its new development suggestion[J].Coal Geology & Exploration,2022,50(2):1−8 doi: 10.12363/issn.1001-1986.21.10.0592

陕西省富油煤资源潜力及开发建议

doi: 10.12363/issn.1001-1986.21.10.0592
基金项目: 自然资源部煤炭资源勘查与综合利用重点实验室课题(SMDZ-2019ZD-1,SMDZ-2020ZD-1)
详细信息
    第一作者:

    马丽,1975年生,女,陕西三原人,博士,正高级工程师,从事煤田地质研究工作. E-mail:879498134@qq.com

  • 中图分类号: P618

Potential of oil-rich coal resources in Shaanxi Province and its new development suggestion

  • 摘要: 碳达峰、碳中和目标要求下,陕西作为煤炭资源大省,煤炭资源的低碳开发与利用势在必行。基于陕西五大煤田的5 000余组煤质数据,研究陕西省煤炭资源中煤焦油产率的变化规律为:陕北三叠纪煤田>陕北侏罗纪煤田>陕北石炭–二叠纪煤田≈黄陇侏罗纪煤田>渭北石炭–二叠纪煤田,划分出3种富油煤类型:富油煤型、富油煤–高油煤型、富油煤–含油煤型。按照煤炭资源量计算办法,全省已经查明的煤炭资源中富油煤+高油煤资源量为1 550.33亿t,内蕴焦油资源量144.5亿t;预测出陕西省2 000 m以浅煤炭资源总量中富油煤+高油煤资源量为3 845亿t,内蕴焦油资源325亿t;并对富油煤资源控制程度进行划分。分析富油煤的成因机理,指出变质程度、沉积相及物质组成和埋藏条件等为富油煤形成的主要影响因素。针对目前煤炭开发中存在的资源浪费问题,提出一种富油煤原位地下热解多煤层协同开采的资源开发新思路。

     

  • 图  1  陕西省五大煤田焦油产率等值线

    Fig. 1  Contour map of tar yield in five coalfields of Shaanxi

    图  2  单井焦油产率

    Fig. 2  Single well tar yield

    图  3  焦油产率与镜质体反射率相关性

    Fig. 3  Analysis of correlation between vitrinite reflectance and tar yield

    图  4  焦油产率影响因素分析

    Fig. 4  The influencial factors to tar yield

    图  5  显微组分与焦油产率相关性

    Fig. 5  The correlation between macerals and tar yield

    图  6  陕北侏罗纪沉积相剖面图

    Fig. 6  Jurassic Sedimentary facies section in northern Shaanxi

    图  7  煤灰成分与焦油产率的相关性分析

    Fig. 7  Analysis of correlation between coal ash-constituents and tar yield

    图  8  镜惰比与焦油产率相关性分析

    Fig. 8  Correlation between Mirror idleness ratio and tar yield

    图  9  富(高)油煤的控制程度

    Fig. 9  Schematic diagram of control degree of oil-rich coal

    图  10  多煤层原位协同热解共采

    Fig. 10  Schematic diagram of multi-coal seam co-mining by in-situ co-pyrolysis

    表  1  陕西省五大煤田主采煤层焦油产率统计结果

    Table  1  Statistical table of tar yield of main coal seams in five coalfields of Shaanxi

    煤田分类煤层号焦油产率/%不同焦油产率煤样占比/%
    最小值最大值平均值/样品个数Tar,d≤7%7%<Tar,d≤12%Tar,d>12%
    陕北侏罗纪煤田 2−2 3.2 18.6 9.99/676 5.03 87.57 7.40
    3−1 4.1 15.1 10.15/517 3.87 83.17 12.96
    4−2 3.5 14.8 9.80/366 4.64 89.07 6.28
    5−2 2.9 14.6 9.06/598 6.52 89.97 3.51
    黄陇侏罗纪煤田 2煤 1.0 16.0 7.96/104 30.26 67.09 2.65
    3−1 1.5 12.3 7.57/132 39.39 59.09 1.52
    陕北三叠纪煤田 5煤 7.1 16.4 11.96/77 0 46.75 53.25
    3煤 8.0 16.3 11.89/49 0 51.02 48.98
    渭北石炭–二叠纪煤田 3煤 0.3 4.8 1.47/24 100.00 0 0
    5煤 1.2 4.6 2.30/53 100.00 0 0
    陕北石炭–二叠纪煤田 4煤 4.4 14.8 8.50/147 29.93 60.54 9.52
    9煤 5.3 13.4 10.15/10 30.00 20.00 50.00
    下载: 导出CSV

    表  2  煤层变质程度特征参数

    Table  2  Statistical table of parameters of coal seam metamorphism

    煤田富油煤类型ω(Cd)/%ω(Hd)/%Rmax/%煤类ω(Vd)/%水分ω(Mad)/%变质程
    度分级
    黄陇侏罗纪 富油–
    含油煤
    68.85~85.99/82.41(1 978)
    2.90~5.22/4.79 0.51~0.86 不黏–弱黏煤、
    长焰煤
    17.49~49.93/34.68 1.40~13.58/7.80 Ⅰ、Ⅰ−Ⅱ
    陕北侏罗纪 富油煤 71.37~85.07/81.78(3105) 1.21~7.78/4.75 0.51~0.72 长焰煤、不黏–
    弱黏煤
    29.25~51.03/36.87 1.99~12.71/6.79
    陕北三叠纪 富油–
    高油煤
    78.82~86.46/82.63(265) 4.37~6.3/5.50 0.61~0.80 气–气肥煤、
    长焰煤
    33.62~45.64/39.78 2.50~11.17/5.75 Ⅰ−Ⅱ
    陕北石炭–二叠纪 富油–
    含油煤
    72.20~90.35/83.65(73) 4.07~5.89/4.89 0.57~1.50 气–肥煤、长焰煤、不黏–弱黏煤、焦煤、瘦煤 19.18~51.56/33.47 0.60~9.40/2.92 Ⅰ−Ⅳ
      注:68.85~85.99/82.41(1 978)表示最小~最大值/平均值(采样数),其他数据同。
    下载: 导出CSV

    表  3  陕西省富油煤资源量统计

    Table  3  Statistics of oil-rich coal resources 单位: 亿t

    煤田高油煤富油煤焦油
    陕北侏罗纪110.841 180.34124.26
    黄陇侏罗纪1.66121.247.74
    陕北三叠纪26.3510.394.37
    陕北石炭–二叠纪3.6795.848.13
    合计142.521 407.81144.50
    下载: 导出CSV

    表  4  富油煤资源控制程度统计结果

    Table  4  Oil-rich coal resource control level table 单位: 亿t

    煤田高油煤/亿t富油煤/亿t
    Ⅰ类Ⅱ类Ⅲ类Ⅰ类Ⅱ类Ⅲ类
    陕北侏罗纪 110.84 0 0 725.75 385.72 68.87
    黄陇侏罗纪 1.66 0 0 97.20 17.84 6.20
    陕北三叠纪 3.86 20.82 1.67 5.49 4.18 0.72
    陕北石炭–二叠纪 2.62 1.05 0 55.18 40.66 0
    合计 118.98 21.87 1.67 883.62 448.40 75.79
    下载: 导出CSV
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  • 收稿日期:  2021-10-27
  • 修回日期:  2021-12-20
  • 刊出日期:  2022-02-01
  • 网络出版日期:  2022-02-15

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