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致密砂岩储层微观孔喉结构及可动流体分布特征:以鄂尔多斯盆地东部神木地区盒8段储层为例

夏玉磊 兰建平 姚伟

夏玉磊, 兰建平, 姚伟. 致密砂岩储层微观孔喉结构及可动流体分布特征:以鄂尔多斯盆地东部神木地区盒8段储层为例[J]. 地质科技通报, 2024, 43(2): 41-51. doi: 10.19509/j.cnki.dzkq.tb20220574
引用本文: 夏玉磊, 兰建平, 姚伟. 致密砂岩储层微观孔喉结构及可动流体分布特征:以鄂尔多斯盆地东部神木地区盒8段储层为例[J]. 地质科技通报, 2024, 43(2): 41-51. doi: 10.19509/j.cnki.dzkq.tb20220574
XIA Yulei, LAN Jianping, YAO Wei. Micropore structure and movable fluid distribution characteristics of tight sandstone reservoirs: Taking the He 8 reservoir in the Shenmu area of the eastern Ordos Basin as an example[J]. Bulletin of Geological Science and Technology, 2024, 43(2): 41-51. doi: 10.19509/j.cnki.dzkq.tb20220574
Citation: XIA Yulei, LAN Jianping, YAO Wei. Micropore structure and movable fluid distribution characteristics of tight sandstone reservoirs: Taking the He 8 reservoir in the Shenmu area of the eastern Ordos Basin as an example[J]. Bulletin of Geological Science and Technology, 2024, 43(2): 41-51. doi: 10.19509/j.cnki.dzkq.tb20220574

致密砂岩储层微观孔喉结构及可动流体分布特征:以鄂尔多斯盆地东部神木地区盒8段储层为例

doi: 10.19509/j.cnki.dzkq.tb20220574
基金项目: 

国家自然科学基金青年基金项目 52004221

详细信息
    通讯作者:

    夏玉磊, E-mail: xiaylcqzt@163.com

  • 中图分类号: P618.130.2+1

Micropore structure and movable fluid distribution characteristics of tight sandstone reservoirs: Taking the He 8 reservoir in the Shenmu area of the eastern Ordos Basin as an example

More Information
  • 摘要:

    致密砂岩复杂的孔喉结构导致多变的可动流体分布, 而微观孔隙结构和可动流体分布又是研究致密砂岩储层的重点。基于核磁共振可动流体测试原理, 采用离心试验、高压压汞、扫描电镜、X射线衍射及铸体薄片等方法, 建立了神木地区盒8段储层孔隙结构分类标准, 明确了3类岩石孔隙结构参数及孔隙、喉道类型, 提出了适用于目标储层转换系数的新方法, 并定量评价了3类岩石可动流体分布特征。研究结果表明, 目标储层中Ⅰ、Ⅱ类岩石孔隙以孔径大于10 μm的残余粒间孔和孔径大于1 μm的溶蚀孔为主, 喉道以缩小型和弯片状喉道为主, 孔隙结构参数较好, 大孔隙发育程度高、孔喉间连通性好、可动流体赋存量大, 大部分可动流体赋存于T2谱右峰对应的大孔隙中, 而左峰对应的小孔隙中可动流体含量低。Ⅲ类岩石孔隙结构参数差、可动流体百分比低、孔喉以晶间孔和管束状喉道为主。目标储层平均转换系数为0.029 μm/ms, 但Ⅰ、Ⅱ类岩石转换系数小于Ⅲ类, 转换后的Ⅰ、Ⅱ类岩石T2谱的右峰与压汞孔隙半径分布的主峰相对应, 而Ⅲ类岩石T2谱的左峰与压汞孔隙半径分布的主峰相对应。Ⅰ、Ⅱ类岩石孔径大于1 μm的孔隙中可动流体百分比高, 是未来勘探开发的主要方向。研究成果为提高致密油藏采收率提供了参考和借鉴。

     

  • 图 1  Ⅰ类岩石不同离心力离心前后T2谱分布

    Figure 1.  T2 spectrum distribution of the typeⅠrock before and after centrifugation under different centrifugal forces

    图 2  Ⅱ类岩石不同离心力离心前后T2谱分布

    Figure 2.  T2 spectral distribution of the type Ⅱ rock before and after centrifugation under different centrifugal forces

    图 3  Ⅲ类岩石不同离心力离心前后T2谱分布

    Figure 3.  T2 spectrum distribution of the type Ⅲ rock before and after centrifugation under different centrifugal forces

    图 4  目标储层孔隙类型及喉道类型

    a.原生粒间孔充填的自生石英与叶片状绿泥石,扫描电镜,3号岩心;b.多边形粒间孔,铸体薄片,3号岩心;c.宽度不一的微裂缝,扫描电镜,5号岩心;d.孔隙缩小型喉道,铸体薄片,5号岩心;e.长石碎屑溶蚀形成的粒内溶孔,扫描电镜,7号岩心;f.长石溶蚀孔形状,铸体薄片,7号岩心;g.弯片状喉道,铸体薄片,9号岩心;h.晶间孔,扫描电镜,13号岩心;i.发育在伊/蒙混层之间的晶间孔,扫描电镜,15号岩心

    Figure 4.  Pore type and throat type of the target reservoir

    图 5  3类岩石代表岩心最佳离心力后的可动流体分布

    Figure 5.  Movable fluid distribution of the representative core of the three rock types after the optimum centrifugal force

    图 6  经过换算后的T2谱分布与压汞法孔隙半径分布对比

    Figure 6.  Comparison of the T2 spectrum distribution after conversion with the pore radius distribution of the mercury injection method

    图 7  3类岩石代表岩心可动流体及可动流体百分比分布

    Figure 7.  Movable fluid and the percentage distribution of movable fluid of the representative core of the three rock types

    图 8  3类岩石不同孔径区间内可动流体百分比

    Figure 8.  Movable fluid percentage in the different pore size intervals of the three rock types

    表  1  6块岩心不同离心力离心前后含水饱和度变化

    Table  1.   Changes in the water saturation of 6 cores before and after centrifugation with different centrifugal forces

    样品数 施加[0.69, 2.09) MPa离心力 施加[2.09, 2.76) MPa离心力 施加[2.76, 4.14] MPa离心力
    含水饱和度减少量/% 平均减少量/% 含水饱和度减少量/% 平均减少量/% 含水饱和度减少量/% 平均减少量/%
    6 22.14~34.27 19.28 4.31~11.28 7.17 0.66~1.13 0.81
    下载: 导出CSV

    表  2  实验岩心基本物性参数及转换系数

    Table  2.   Basic physical parameters and conversion coefficient of the experimental core

    储层类型 岩心编号 储层物性 可动流体参数 压汞参数 最佳离心力下孔隙动用下限对应T2值/ms 压汞与NMR之间转换系数/(μm·ms-1)
    孔隙度/% 渗透率/10-3μm2 可动流体百分比/% 可动流体孔隙度/% 阈值压力/MPa 中值压力/MPa 中值半径/μm 平均孔喉半径/μm 分选系数 最大进汞饱和度/%
    Ⅰ类 1 9.82 0.086 56.25 5.51 0.97 6.66 0.177 0.258 2.68 93.52 2.28 0.023
    2 6.43 0.045 48.07 3.09 1.55 10.27 0.145 0.495 1.85 94.65 2.76 0.019
    3 8.81 0.076 54.66 4.82 2.24 5.06 0.160 0.210 2.81 72.56 2.82 0.019
    4 6.35 0.067 38.75 2.46 3.96 12.31 0.066 0.117 2.86 68.99 1.98 0.027
    5 9.42 0.206 63.30 5.95 0.81 2.71 0.299 0.482 2.27 100.00 3.17 0.017
    平均 8.17 0.096 52.21 4.37 1.91 7.40 0.170 0.310 2.49 85.94 2.60 0.021
    Ⅱ类 6 9.01 0.150 59.30 5.34 0.43 10.26 0.118 0.194 2.12 71.78 1.68 0.032
    7 6.89 0.082 40.59 2.80 0.51 5.97 0.135 0.282 3.51 99.45 3.53 0.015
    8 7.64 0.036 37.47 2.86 4.88 9.40 0.086 0.102 2.27 72.68 3.88 0.014
    9 7.25 0.020 28.34 2.05 6.30 18.38 0.044 0.059 3.06 73.9 4.26 0.012
    10 10.68 0.127 43.31 4.63 0.91 4.58 0.237 0.400 3.08 90.56 4.68 0.011
    平均 8.29 0.083 41.80 3.54 2.61 9.72 0.120 0.210 2.81 81.67 3.61 0.017
    Ⅲ类 11 5.78 0.007 17.57 1.01 13.11 79.73 0.011 0.046 3.52 70.05 1.13 0.047
    12 5.11 0.005 26.63 1.36 21.90 137.76 0.006 0.034 3.25 52.20 1.08 0.049
    13 9.06 0.014 23.01 2.08 3.22 21.23 0.038 0.043 4.06 80.79 0.84 0.063
    14 9.69 0.030 14.75 1.43 2.05 18.66 0.043 0.116 3.69 98.90 1.32 0.040
    15 7.16 0.014 11.54 0.83 1.67 42.57 0.019 0.207 2.42 94.31 0.96 0.055
    平均 7.36 0.014 18.70 1.34 8.39 59.99 0.020 0.090 3.39 79.25 1.07 0.051
    下载: 导出CSV
  • [1] 付锁堂, 金之钧, 付金华, 等. 鄂尔多斯盆地延长组7段从致密油到页岩油认识的转变及勘探开发意义[J]. 石油学报, 2021, 42(5): 561-569. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202105001.htm

    FU S T, JIN Z J, FU J H, et al. Transformation of understanding from tight oil to shale oil in the Member 7 of Yanchang Formation in Ordos Basin and its significance of exploration and development[J]. Acta Petrolei Sinica, 2021, 42(5): 561-569. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB202105001.htm
    [2] GHANIZADEH A, CLARKSON C R, AQUINO S, et al. Petrophysical and geomechanical characteristics of Canadian tight oil and liquid-rich gas reservoirs: I. Pore network and permeability characterization[J]. Fuel, 2015, 153: 664-681. doi: 10.1016/j.fuel.2015.03.020
    [3] 赵丁丁, 侯加根, 王秀杰, 等. 致密砂岩气藏不同岩石相孔喉结构对气水相渗特征控制机理: 以鄂尔多斯盆地东胜气田J72井区下石盒子组储层为例[J]. 地质科技通报, 2023, 42(3): 163-174. doi: 10.19509/j.cnki.dzkq.tb20220517

    ZHAO D D, HOU J G, WANG X J, et al. Controlling mechanism of pore-throat structure of different lithofacies on gas-water relative permeability characteristics of tight sandstone gas reservoir: A case study of the Lower Shihezi Formation in the Well J72 block of the Dongsheng Gas Field, Ordos Basin[J]. Bulletin of Geological Science and Technology, 2023, 42(3): 163-174. (in Chinese with English abstract) doi: 10.19509/j.cnki.dzkq.tb20220517
    [4] 白斌, 朱如凯, 吴松涛, 等. 非常规油气致密储层微观孔喉结果表征新技术及意义[J]. 中国石油勘探, 2015, 19(3): 78-86. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY201403011.htm

    BAI B, ZHU R K, WU S T, et al. New micro-throat structural characterization techniques for unconventional tight hydrocarbon reservoir[J]. China Petroleum Exploration, 2015, 19(3): 78-86. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY201403011.htm
    [5] LOUCKS R G, RUPPEL S C. Mississippian Barnett shale: Lithofacies and depositional setting of a deep-water shale-gas succession in the Fort Worth Basin, Texas[J]. AAPG Bulletin, 2007, 91(4): 579-601. doi: 10.1306/11020606059
    [6] LOUCKS R G, REED R M, RUPPEL S C, et al. Morphology, genesis, and distribution of nanometer-scale pores in siliceous mudstones of the Mississippian Barnett Shale[J]. Journal of Sedimentary Research, 2009, 79(12): 848-861. doi: 10.2110/jsr.2009.092
    [7] GANE P A, RIDGWAY C J, LEHTINEN E, et al. Comparison of NMR cryoporometry, mercury intrusion porosimetry, and DSC thermoporosimetry in characterizing pore size distributions of compressed finely ground calcium carbonate structures[J]. Industrial & Engineering Chemistry Research, 2004, 43(24): 7920-7927.
    [8] 曹永娜. 利用CT扫描技术实现对岩心微观驱替过程的研究[J]. 科学技术与工程, 2015, 15(6): 64-68. https://www.cnki.com.cn/Article/CJFDTOTAL-KXJS201506014.htm

    CAO Y N. Study of microscopic blooding process using CT scanning technique[J]. Science Technology and Engineering, 2015, 15(6): 64-68. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-KXJS201506014.htm
    [9] 程辉, 王付勇, 宰芸, 等. 基于高压压汞和核磁共振的致密砂岩渗透率预测[J]. 岩性油气藏, 2020, 32(3): 122-132. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202003012.htm

    CHENG H, WANG F Y, ZAI Y, et al. Prediction of tight sandstone permeability based on high-pressure mercury intrusion(HPMI) and nuclear magnetic resonance(NMR)[J]. Lithologic Reservoirs, 2020, 32(3): 122-132. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202003012.htm
    [10] MEDINA C R, MASTALERZ M, RUPP J A. Characterization of porosity and pore-size distribution using multiple analytical tools: Implications for carbonate reservoir characterization in geologic storage of CO2[J]. Environmental Geosciences, 2017, 24(1): 51-72. doi: 10.1306/eg.02071716010
    [11] 崔连训. 恒速压汞及核磁共振在低渗透储层评价中的应用[J]. 成都理工大学学报(自然科学版), 2012, 39(4): 430-433. https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201204014.htm

    CUI L X. Application of constant-rate intruding mercury and nuclear magnetic resonance method to low permeability reservoir evaluation[J]. Journal of Chendu University of Technology(Science & Technology Edition), 2012, 39(4): 430-433. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-CDLG201204014.htm
    [12] MBIA E N, FABRICIUS I L, KROGSBØLL A, et al. Permeability, compressibility and porosity of Jurassic shale from the Norwegian-Danish Basin[J]. Petroleum Geoscience, 2014, 20(3): 257-281. doi: 10.1144/petgeo2013-035
    [13] 时建超, 屈雪峰, 雷启鸿, 等. 致密油储层可动流体分布特征及主控因素分析: 以鄂尔多斯盆地长7储层为例[J]. 天然气地球科学, 2016, 27(5): 827-834. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201605009.htm

    SHI J C, QU X F, LEI Q H, et al. Distribution characteristics and controlling factors of movable fluid in tight oil reservoir: A case study of Chang 7 reservoir in Ordos Basin[J]. Natural Gas Geoscience, 2016, 27(5): 827-834. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201605009.htm
    [14] PANG X J, WANG G, KUANG L C, et al. Insights into the pore structure and oil mobility in fine-grained sedimentary rocks: The Lucaogou Formation in Jimusar Sag, Junggar Basin, China[J]. Marine and Petroleum Geology, 2022, 137: 105492. doi: 10.1016/j.marpetgeo.2021.105492
    [15] 代全齐, 罗群, 张晨, 等. 基于核磁共振新参数的致密油砂岩储层孔隙结构特征: 以鄂尔多斯盆地延长组7段为例[J]. 石油学报, 2016, 37(7): 887-897. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201607007.htm

    DAI Q J, LUO Q, ZHANG C, et al. Pore structure characteristics of tight-oil sandstone reservoir based on a new parameter measured by NMR experiment: A case study of Seven Member in Yanchang Formation, Ordos Basin[J]. Acta Petrolei Sinica, 2016, 37(7): 887-897. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201607007.htm
    [16] YAO Y B, LIU D M. Comparison of low-field NMR and mercury intrusion porosimetry in characterizing pore size distributions of coals[J]. Fuel, 2012, 95(11): 152-158.
    [17] 黄兴, 李天太, 王香增, 等. 致密砂岩储层可动流体分布特征及其影响因素: 以鄂尔多斯盆地姬塬油田延长组长8储层为例[J]. 石油学报, 2019, 40(5): 557-567. https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201905005.htm

    HUANG X, LI T T, WANG X Z, et al. Distribution characteristics and its influence factors of movable fluid in tight sandstone reservoir: A case study of Chang 8 oil layer of Yanchang Formation Jiyuan Oilfield, Ordos Basin[J]. Acta Petrolei Sinica, 2019, 40(5): 557-567. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-SYXB201905005.htm
    [18] ZHANG L C, LU S F, XIAO D S, et al. Pore structure characteristics of tight sandstones in the northern Songliao Basin, China[J]. Marine and Petroleum Geology, 2017, 88: 170-180. doi: 10.1016/j.marpetgeo.2017.08.005
    [19] 喻建, 杨孝, 李斌, 等. 致密油储层可动流体饱和度计算方法: 以合水地区长7致密油储层为例[J]. 石油实验地质, 2014, 36(6): 767-772. https://www.cnki.com.cn/Article/CJFDTOTAL-SYSD201406018.htm

    YU J, YANG X, LI B, et al. A method of determining movable fluid saturation of tight oil reservoirs in seventh member of Yanchang Formation in Heshui area[J]. Petroleum Geology & Experiment, 2014, 36(6): 767-772. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-SYSD201406018.htm
    [20] 卢振东, 刘成林, 臧起彪, 等. 高压压汞与核磁共振技术在致密储层孔隙结构分析中的应用: 以鄂尔多斯盆地合水地区为例[J]. 地质科技通报, 2022, 41(3): 300-310. doi: 10.19509/j.cnki.dzkq.2021.0256

    LU Z D, LIU C L, ZANG Q B, et al. Application of high pressure mercury injection and nuclear magnetic resonance in analysis of the pore structure of dense sandstone: A case study of the Heshui area, Ordos Basin[J]. Bulletin of Geological Science and Technology, 2022, 41(3): 300-310. (in Chinese with English abstract) doi: 10.19509/j.cnki.dzkq.2021.0256
    [21] 任颖惠, 吴珂, 何康宁, 等. 核磁共振技术在研究超低渗-致密油储层可动流体中的应用: 以鄂尔多斯盆地陇东地区延长组为例[J]. 矿物岩石, 2017, 37(1): 103-110. https://www.cnki.com.cn/Article/CJFDTOTAL-KWYS201701012.htm

    REN Y H, WU K, HE K N, et al. Application of NMR technique to movable fluid of ultra-low permeability and tight reservoir: A case study on the Yanchang formation in Longdong area, Ordos Basin[J]. Journal of Mineralogy and Petrology, 2017, 37(1): 103-110. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-KWYS201701012.htm
    [22] 罗燕颖, 吴迪, 杜环虹, 等. SY/T 6490-2014岩样核磁共振参数实验室测量规范[S]. 北京: 石油工业出版社, 2014.

    LUO Y Y, WU D, DU H H, et al. SY/T 6490-2014 Specification for measurement of rock NMR parameter in laboratory[S]. Beijing: Petroleum Industry Press, 2014. (in Chinese)
    [23] Lyu C, Ning Z, Wang Q, et al. Application of NMR T2 to pore size distribution and movable fluid distribution in tight sandstones[J]. Energy & Fuels, 2018, 32(2): 1395-1405.
    [24] 黄杰, 杜玉洪, 王红梅, 等. 特低渗储层微观孔隙结构与可动流体赋存特征: 以二连盆地阿尔凹陷腾一下段储层为例[J]. 岩性油气藏, 2020, 32(5): 93-101. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202005010.htm

    HUANG J, DU Y H, WANG H M, et al. Characteristics of micro pore structure and movable fluid of extra-low permeability reservoir: A case study of lower Et1 reserovir in A'er Sag, Erlian Basin[J]. Lithologic Reservoirs, 2020, 32(5): 93-101. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202005010.htm
    [25] 郭睿良, 陈小东, 马晓峰, 等. 鄂尔多斯盆地陇东地区延长组长7段致密储层水平向可动流体特征及其影响因素分析[J]. 天然气地球科学, 2018, 29(5): 665-674. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201805008.htm

    GUO R L, CHEN X D, MA X F, et la. Analysis of the characteristics and its influencing factors of horizontal movable fluid in the Chang 7 tight reservoir in Longdong area, Ordos Basin[J]. Natural Gas Geoscience, 2018, 29(5): 665-674. (in Chinese with English abstract) https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201805008.htm
    [26] 汪新光, 张冲, 张辉, 等. 基于微观孔隙结构的低渗透砂岩储层分类评价[J]. 地质科技通报, 2021, 40(4): 93-103. doi: 10.19509/j.cnki.dzkq.2021.0429

    WANG X G, ZHANG C, ZHANG H, et al. Classification and evaluation of low-permeability sand reservoir based on micro-pore structure[J]. Bulletin of Geological Science and Technology, 2021, 40(4): 93-103. (in Chinese with English abstract) doi: 10.19509/j.cnki.dzkq.2021.0429
    [27] 董岩, 肖佃师, 彭寿昌, 等. 页岩油层系储集层微观孔隙非均质性及控制因素: 以吉木萨尔凹陷芦草沟组为例[J]. 矿物岩石地球化学通报, 2021, 40(1): 115-122.

    DONG Y, XIAO D S, PENG S C, et al. Heterogeneity of microscopic pores in shale oil reservoir and its controlling factors: Taking the Lucaogou Formation in the Jimusar Sag as an example[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2021, 40(1): 115-122. (in Chinese with English abstract)
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出版历程
  • 收稿日期:  2022-10-22
  • 录用日期:  2022-12-07
  • 修回日期:  2022-12-02

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