| Citation: | CHEN Qiquan，LI Chao，CHENG Youyou，et al. Influence of pore structure of tight sandstone reservoirs on fluid mobility and comprehensive characterization[J]. Bulletin of Geological Science and Technology，2026，45（2）：92-106 doi: 10.19509/j.cnki.dzkq.tb20240683
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Reservoir fluid mobility is significantly influenced by the combined effects of reservoir physical properties and pore structure, and cannot be accurately characterized by a single parameter. This study aims to apply a comprehensive pore structure characterization to evaluation tight sandstone reservoirs.
In this study, the effective movable fluid porosity $(\varphi_{\mathrm{cutoff}}) $ and effective movable fluid pore throat radius $(r_{\mathrm{cutoff}}) $ were calculated by integrating nuclear magnetic resonance (NMR) and high-pressure mercury intrusion (HPMI) with fractal theory for the Triassic Chang 82 tight sandstone reservoir in the Heshui area of the Ordos Basin. To explore the relationship between pore structure parameters and the degree of fluid mobility in the reservoir, principal component analysis (PCA) was employed to extract factors, and k-means clustering was introduced to establish a comprehensive evaluation approach for fluid mobility of tight sandstones.
The results showed that the pore throat types of the target layer in the study area were predominantly medium-small pores and medium-fine throats, and movable fluid mainly resided in pores with pore sizes of 0.01-1.0 μm. The fractal dimension ranged from
The comprehensive evaluation results of fluid mobility can provide a basis for reservoir evaluation and efficient development of similar tight sandstone oil reservoirs.
| [1] |
贾承造, 邹才能, 李建忠, 等. 中国致密油评价标准、主要类型、基本特征及资源前景[J]. 石油学报, 2012, 33(3): 343-350.
JIA C Z, ZOU C N, LI J Z, et al. Assessment criteria, main types, basic features and resource prospects of the tight oil in China[J]. Acta Petrolei Sinica, 2012, 33(3): 343-350. (in Chinese with English abstract
|
| [2] |
朱筱敏, 潘荣, 朱世发, 等. 致密储层研究进展和热点问题分析[J]. 地学前缘, 2018, 25(2): 141-146. doi: 10.13745/j.esf.2018.02.015
ZHU X M, PAN R, ZHU S F, et al. Research progress and core issues in tight reservoir exploration[J]. Earth Science Frontiers, 2018, 25(2): 141-146. (in Chinese with English abstract doi: 10.13745/j.esf.2018.02.015
|
| [3] |
张全培. 鄂尔多斯盆地姬塬地区长7致密砂岩储层微观孔喉结构与分级评价研究[D]. 西安: 西北大学, 2022.
ZHANG Q P. Study on microscopic pore throat structure and grading evaluation of Chang 7 tight sandstone reservoirs in Jiyuan area, Ordos Basin[D]. Xi'an: Northwest University, 2022. (in Chinese with English abstract
|
| [4] |
LAI J, WANG G W, WANG Z Y, et al. A review on pore structure characterization in tight sandstones[J]. Earth-Science Reviews, 2018, 177: 436-457. doi: 10.1016/j.earscirev.2017.12.003
|
| [5] |
ZHU H H, ZHANG T S, ZHONG D K, et al. Binary pore structure characteristics of tight sandstone reservoirs[J]. Petroleum Exploration and Development, 2019, 46(6): 1297-1306. doi: 10.1016/S1876-3804(19)60283-1
|
| [6] |
BAI Y B, ZHAO J Z, ZHAO D L, et al. Pore structure and its control on reservoir quality in tight sandstones: A case study of the Chang 6 Member of the Upper Triassic Yanchang Formation in the Jingbian oilfield in the Ordos Basin, China[J]. Journal of Petroleum Exploration and Production Technology, 2021, 11(1): 171-189. doi: 10.1007/s13202-020-01042-9
|
| [7] |
PAN H, JIANG Y Q, GUO G A, et al. Pore-throat structure characteristics and fluid mobility analysis of tight sandstone reservoirs in Shaximiao Formation, central Sichuan[J]. Geological Journal, 2023, 58(11): 4243-4256. doi: 10.1002/gj.4734
|
| [8] |
范彩伟, 游君君, 周刚. 北部湾盆地涠西南凹陷流沙港组页岩油赋存空间多尺度表征及可动性评价[J]. 地球科学, 2025, 50(1): 127-143. doi: 10.3799/dqkx.2024.034
FAN C W, YOU J J, ZHOU G. Shale oil mobility evaluation and multi-scale characterization of oil occurrence space of Liushagang Formation in Weixinan Sag, Beibuwan Basin[J]. Earth Science, 2025, 50(1): 127-143. (in Chinese with English abstract doi: 10.3799/dqkx.2024.034
|
| [9] |
刘鹏, 彭斌, 于瑞江, 等. 基于核磁共振流体分布孔隙精细划分的致密油藏流体可动性特征研究[J]. 地球物理学进展, 2025, 40(1): 294-303. doi: 10.6038/pg2025HH0266
LIU P, PENG B, YU R J, et al. Research on the characteristics of fluid mobility of the tight reservoir with the NMR fluid distribution pore classification method[J]. Progress in Geophysics, 2025, 40(1): 294-303. (in Chinese with English abstract doi: 10.6038/pg2025HH0266
|
| [10] |
张全培, 王海红, 刘美荣, 等. 超低渗透储层全孔径分布及其分形特征研究[J]. 中国矿业大学学报, 2020, 49(6): 1137-1149.
ZHANG Q P, WANG H H, LIU M R, et al. Study of the full pore size distribution and fractal characteristics of ultra-low permeability reservoir[J]. Journal of China University of Mining & Technology, 2020, 49(6): 1137-1149. (in Chinese with English abstract
|
| [11] |
MANDELBROT B B. On the geometry of homogeneous turbulence, with stress on the fractal dimension of the iso-surfaces of scalars[J]. Journal of Fluid Mechanics, 1975, 72: 401-416. doi: 10.1017/S0022112075003047
|
| [12] |
WU Y Q, TAHMASEBI P, LIN C Y, et al. A comprehensive study on geometric, topological and fractal characterizations of pore systems in low-permeability reservoirs based on SEM, MICP, NMR, and X-ray CT experiments[J]. Marine and Petroleum Geology, 2019, 103: 12-28. doi: 10.1016/j.marpetgeo.2019.02.003
|
| [13] |
LIU M, XIE R H, GUO J F, et al. Characterization of pore structures of tight sandstone reservoirs by multifractal analysis of the NMR T2 distribution[J]. Energy & Fuels, 2018, 32(12): 12218-12230. doi: 10.1021/acs.energyfuels.8b02869
|
| [14] |
LIU D K, GU Z L, LIANG R X, et al. Impacts of pore-throat system on fractal characterization of tight sandstones[J]. Geofluids, 2020, 2020(1): 4941501. doi: 10.1130/abs/2018am-321368
|
| [15] |
石桓山, 胡望水, 李涛, 等. 致密砂岩储层孔隙结构特征对可动流体赋存的影响: 以鄂尔多斯盆地庆城地区长7段为例[J]. 地质科技通报, 2024, 43(2): 62-74. doi: 10.19509/j.cnki.dzkq.tb20220660
SHI H S, HU W S, LI T, et al. Pore throat structure characteristics of tight sandstone reservoirs and their influence on movable fluid occurrence: Taking the Chang-7 Member of Qingcheng area of Ordos Basin as an example[J]. Bulletin of Geological Science and Technology, 2024, 43(2): 62-74. (in Chinese with English abstract doi: 10.19509/j.cnki.dzkq.tb20220660
|
| [16] |
卢振东, 刘成林, 臧起彪, 等. 高压压汞联合分形理论分析致密砂岩孔隙结构: 以鄂尔多斯盆地合水地区为例[J]. 地质科技通报, 2023, 42(1): 264-273. doi: 10.19509/j.cnki.dzkq.tb20210203
LU Z D, LIU C L, ZANG Q B, et al. Analysis of the pore structure of tight sandstone by high-pressure mercury injection combined with fractal theory: A case study of the Heshui area in the Ordos Basin[J]. Bulletin of Geological Science and Technology, 2023, 42(1): 264-273. (in Chinese with English abstract doi: 10.19509/j.cnki.dzkq.tb20210203
|
| [17] |
雒斌, 陶荣德, 崔小丽, 等. 鄂尔多斯盆地吴起−志丹地区长8段致密砂岩储层孔喉结构分形特征[J]. 天然气地球科学, 2023, 34(8): 1305-1315.
LUO B, TAO R D, CUI X L, et al. Fractal characteristics of pore throat structure of Chang 8 Member tight sandstone reservoir in Wuqi-Zhidan area, Ordos Basin[J]. Natural Gas Geoscience, 2023, 34(8): 1305-1315. (in Chinese with English abstract
|
| [18] |
ZHANG J J, XU A N, ZHAO C J, et al. A new parameter for characterizing pore-fracture structure heterogeneity: Fractal dimension based on the mercury extrusion curve[J]. Frontiers of Earth Science, 2024, 18(4): 782-796. doi: 10.1007/s11707-024-1100-7
|
| [19] |
刘若冰, 魏志红, 加奥启, 等. 川东南地区五峰-龙马溪组深层超压富有机质页岩孔隙结构分形特征及其地质意义[J]. 地球科学, 2023, 48(4): 1496-1516.
LIU R B, WEI Z H, JIA A Q, et al. Fractal characteristics of pore structure in deep overpressured organic-rich shale in Wufeng-Longmaxi Formation in Southeast Sichuan and its geological significance[J]. Earth Science, 2023, 48(4): 1496-1516. (in Chinese with English abstract
|
| [20] |
XIE W B, YIN Q L, ZENG J B, et al. Fractal-based approaches to pore structure investigation and water saturation prediction from NMR measurements: A case study of the gas-bearing tight sandstone reservoir in Nanpu Sag[J]. Fractal and Fractional, 2023, 7(3): 273. doi: 10.3390/fractalfract7030273
|
| [21] |
WU B H, XIE R H, WANG X Y, et al. Characterization of pore structure of tight sandstone reservoirs based on fractal analysis of NMR echo data[J]. Journal of Natural Gas Science and Engineering, 2020, 81: 103483. doi: 10.1016/j.jngse.2020.103483
|
| [22] |
陈朝兵, 付玲, 陈新晶, 等. 致密砂岩微观非均质性定量评价方法研究: 以鄂尔多斯盆地华庆地区延长组长6油层组为例[J]. 沉积学报, 2021, 39(5): 1086-1099. doi: 10.14027/j.issn.1000⁃0550.2021.037
CHEN Z B, FU L, CHEN X J, et al. Quantitative evaluation method for micro heterogeneity of tight sandstone: A case study of Chang-6 reservoir of Yanchang Formation in Huaqing area, Ordos Basin[J]. Acta Sedimentologica Sinica, 2021, 39(5): 1086-1099. (in Chinese with English abstract doi: 10.14027/j.issn.1000⁃0550.2021.037
|
| [23] |
夏宇轩. 低渗储层微观孔隙结构分形表征及渗流特性研究[D]. 武汉: 中国地质大学(武汉), 2022.
XIA Y X. Fractal characterization of micro pore structure and study on flow properties of low permeability reservoirs[D]. Wuhan: China University of Geosciences(Wuhan), 2022. (in Chinese with English abstract
|
| [24] |
甯波, 任大忠, 王虎, 等. 致密砂岩气藏微观孔隙结构多尺度联合表征[J]. 断块油气田, 2024, 31(1): 34-41. doi: 10.6056/dkyqt202401005
NING B, REN D Z, WANG H, et al. Multi-scale combination characterization of micropore structure of tight sandstone gas reservoirs[J]. Fault-Block Oil & Gas Field, 2024, 31(1): 34-41. (in Chinese with English abstract doi: 10.6056/dkyqt202401005
|
| [25] |
孟子圆, 孙卫, 刘登科, 等. 联合压汞法的致密储层微观孔隙结构及孔径分布特征: 以鄂尔多斯盆地吴起地区长6储层为例[J]. 地质科技情报, 2019, 38(2): 208-216. doi: 10.19509/j.cnki.dzkq.2019.0224
MENG Z Y, SUN W, LIU D K, et al. Combined mercury porosimetry to characterize the microscopic pore structure and pore size distribution of tight reservoirs: A case of Chang 6 reservoir in Wuqi area, Ordos Basin[J]. Geological Science and Technology Information, 2019, 38(2): 208-216. (in Chinese with English abstract doi: 10.19509/j.cnki.dzkq.2019.0224
|
| [26] |
肖佃师, 卢双舫, 陆正元, 等. 联合核磁共振和恒速压汞方法测定致密砂岩孔喉结构[J]. 石油勘探与开发, 2016, 43(6): 961-970. doi: 10.11698/PED.2016.06.13
XIAO D S, LU S F, LU Z Y, et al. Combining nuclear magnetic resonance and rate-controlled porosimetry to probe the pore-throat structure of tight sandstones[J]. Petroleum Exploration and Development, 2016, 43(6): 961-970. (in Chinese with English abstract doi: 10.11698/PED.2016.06.13
|
| [27] |
ZHANG F, JIANG Z X, SUN W, et al. A multiscale comprehensive study on pore structure of tight sandstone reservoir realized by nuclear magnetic resonance, high pressure mercury injection and constant-rate mercury injection penetration test[J]. Marine and Petroleum Geology, 2019, 109: 208-222. doi: 10.1016/j.marpetgeo.2019.06.019
|
| [28] |
吴彦君. 鄂尔多斯盆地陇东地区致密砂岩储层微观特征差异及其对可动流体的影响[D]. 西安: 西北大学, 2022.
WU Y J. Difference of microscopic characteristics of tight sandstone reservoirs and its influence on movable fluid in Longdong area, Ordos Basin[D]. Xi'an: Northwest University, 2022. (in Chinese with English abstract
|
| [29] |
LAI J, WANG G W, FAN Z Y, et al. Insight into the pore structure of tight sandstones using NMR and HPMI measurements[J]. Energy & Fuels, 2016, 30(12): 10200-10214. doi: 10.1021/acs.energyfuels.6b01982
|
| [30] |
孟婧, 张莉莹, 李芮, 等. 致密砂岩储层微观孔隙结构特征及其分类评价[J]. 特种油气藏, 2023, 30(4): 71-78. doi: 10.3969/j.issn.1006-6535.2023.04.009
MENG J, ZHANG L Y, LI R, et al. Microscopic pore structure characteristics of tight sandstone reservoirs and its classification evaluation[J]. Special Oil & Gas Reservoirs, 2023, 30(4): 71-78. (in Chinese with English abstract doi: 10.3969/j.issn.1006-6535.2023.04.009
|
| [31] |
韩彬. 致密砂岩储层孔隙结构表征研究: 以克深2气藏巴什基奇克组储层为例[D]. 成都: 西南石油大学, 2017.
HAN B. Characterization of pore structure of dense sandstone reservoirs: Taking the reservoir of the Bashkichik Formation in the Keshen 2 gas reservoir as an example[D]. Chengdu: Southwest Petroleum University, 2017. (in Chinese with English abstract
|
| [32] |
朱玉瑞. 东营凹陷沙河街组致密砂岩储层孔隙结构表征及分类评价[D]. 成都: 成都理工大学, 2021.
ZHU Y R. Pore structure characteristics and classification of tight sands from Shahejie Formation in Dongying Sag[D]. Chengdu: Chengdu University of Technology, 2021. (in Chinese with English abstract
|
| [33] |
石晓敏, 位云生, 朱汉卿, 等. 致密凝灰质砂岩储层孔隙结构特征与储层分类评价: 以松辽盆地南部营城组致密凝灰质砂岩为例[J]. 天然气地球科学, 2023, 34(10): 1828-1841.
SHI X M, WEI Y S, ZHU H Q, et al. Pore structure characteristics and reservoir classification and evaluation of tight tuffaceous sandstone gas reservoir: Taking the tight tuffaceous sandstone of Yingcheng Formation in southern Songliao Basin as an example[J]. Natural Gas Geoscience, 2023, 34(10): 1828-1841. (in Chinese with English abstract
|
| [34] |
徐黎明, 李志成, 梁晓伟, 等. 鄂尔多斯盆地陇东地区延长组长82优质储集层成因机理研究[J]. 古地理学报, 2016, 18(2): 237-250. doi: 10.7605/gdlxb.2016.02.018
XU L M, LI Z C, LIANG X W, et al. Formation mechanism for the high-quality reservoir in the Chang 82 interval of Yanchang Formation in Longdong area, Ordos Basin[J]. Journal of Palaeogeography (Chinese Edition), 2016, 18(2): 237-250. (in Chinese with English abstract doi: 10.7605/gdlxb.2016.02.018
|
| [35] |
周勇, 徐黎明, 纪友亮, 等. 致密砂岩相对高渗储层特征及分布控制因素研究: 以鄂尔多斯盆地陇东地区延长组长82为例[J]. 中国矿业大学学报, 2017, 46(1): 106-120. doi: 10.13247/j.cnki.jcumt.000575
ZHOU Y, XU L M, JI Y L, et al. Characteristics and distributing controlling factors of relatively high permeability reservoir: A case study from Chang 82 sandstones of Yanchang Formation in Longdong area, Ordos Basin[J]. Journal of China University of Mining & Technology, 2017, 46(1): 106-120. (in Chinese with English abstract doi: 10.13247/j.cnki.jcumt.000575
|
| [36] |
国家能源局. 岩样核磁共振参数实验室测量规范: SY/T 6490-2014[S]. 北京: 石油工业出版社, 2015: 4-5.
National Energy Administration. Laboratory measurement specifi cations for rock sample NMR parameters: SY/T 6490-2014[S]. Beijing: Petroleum Industry Press, 2015: 4-5. (in Chinese)
|
| [37] |
中华人民共和国国家质量监督检验检疫总局, 中国国家标准化管理委员会. 压汞法和气体吸附法测定固体材料孔径分布和孔隙度. 第1部分: 压汞法: GB/T 21650.1-2008[S]. 北京: 中国标准出版社, 2008.
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China. Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption. Part 1: Mercury porosimetry: GB/T 21650.1-2008[S]. Beijing: Standards Press of China, 2008. (in Chinese)
|
| [38] |
卫端. 深层碳酸盐岩储层微观特征与成岩机理: 以顺南地区中-下奥陶统为例[D]. 北京: 中国地质大学(北京), 2021.
WEI D. Microscopic characteristics and diagenetic mechanisms of deep-burial carbonates: Take the Middle-Lower Ordovician in the southern Songnan area as an example[D]. Beijing: China University of Geosciences(Beijing), 2021. (in Chinese with English abstract
|
| [39] |
ZHANG Q P, QI H P, HUO Y, et al. Study of pore-throat structure characteristics and fluid mobility of Chang 7 tight sandstone reservoir in Jiyuan area, Ordos Basin[J]. Open Geosciences, 2023, 15: 20220534. doi: 10.1515/geo-2022-0534
|
| [40] |
BORŮVKA L, VACEK O, JEHLIČKA J. Principal component analysis as a tool to indicate the origin of potentially toxic elements in soils[J]. Geoderma, 2005, 128(3/4): 289-300. doi: 10.1016/j.geoderma.2005.04.010
|
| [41] |
REID M K, SPENCER K L. Use of principal components analysis (PCA) on estuarine sediment datasets: The effect of data pre-treatment[J]. Environmental Pollution, 2009, 157(8/9): 2275-2281. doi: 10.1016/j.envpol.2009.03.033
|
| [42] |
FRITZ M, SCHWARZ H. Initializing k-means efficiently: Benefits for exploratory cluster analysis[C]//Anon. On the Move to Meaningful Internet Systems: OTM 2019 conferences. Berlin, Germany: Springer International Publishing, 2019: 146-163.
|
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