• 中国出版政府奖提名奖

    中国百强科技报刊

    湖北出版政府奖

    中国高校百佳科技期刊

    中国最美期刊

    Volume 49 Issue 7
    Jul.  2024
    Turn off MathJax
    Article Contents
    Liu Guoping, Jin Zhijun, Zeng Lianbo, He Wenjun, Yang Sen, Li Shufeng, Du Xiaoyu, Lu Guoqing, 2024. Natural Fractures and Their Effectiveness in Deep Continental Shale Reservoirs of Permian Fengcheng Formation in Mahu Sag. Earth Science, 49(7): 2346-2358. doi: 10.3799/dqkx.2023.128
    Citation: Liu Guoping, Jin Zhijun, Zeng Lianbo, He Wenjun, Yang Sen, Li Shufeng, Du Xiaoyu, Lu Guoqing, 2024. Natural Fractures and Their Effectiveness in Deep Continental Shale Reservoirs of Permian Fengcheng Formation in Mahu Sag. Earth Science, 49(7): 2346-2358. doi: 10.3799/dqkx.2023.128

    Natural Fractures and Their Effectiveness in Deep Continental Shale Reservoirs of Permian Fengcheng Formation in Mahu Sag

    doi: 10.3799/dqkx.2023.128
    • Received Date: 2023-04-13
      Available Online: 2024-08-03
    • Publish Date: 2024-07-25
    • The continental shale in the Permian Fengcheng Formation of the Mahu Sag in the Junggar Basin has a maximum burial depth exceeding 5 000 m, rich in oil and gas resources. The widely developed natural fracture plays a crucial role in the accumulation and exploration of hydrocarbons in these reservoirs. A classification scheme is established for natural fractures in deep continental shale based on their geological genesis and occurrence by observing cores, image logs, thin sections, and SEM samples. Moreover, the development characteristics and effectiveness of different types of natural fractures Were analyzed, and the natural fracture heterogeneity and their contributions to reservoirs are discussed. Accordingly, natural fractures in deep continental shale are divided into tectonic, diagenetic, and abnormal high-pressure related fractures based on their geological genesis. Tectonic fractures can be subdivided into translayer shear, bed-parallel shear, and intralayer open fractures based on their occurrence, while diagenetic fractures are divided into bedding, stylolite, and shrinkage fractures. Tectonic fractures have relatively large scales, obvious groups, and high dipping and nearly vertical angles. Diagenetic fractures mainly develop horizontally, with curved surfaces and easily branched extensions. Intralayer open, bedding, and stylolite fractures are the dominant types of fractures in deep continental shale reservoirs. Natural fractures can be filled in varying degrees by minerals such as calcite and fine-grained mixtures containing organic matter, among which tectonic and bedding fractures are less filled, and stylolites are easier to be filled. Microscopic tectonic fractures have smaller apertures, while diagenetic fractures usually have larger apertures. This study speculates that tectonic fractures mainly provide effective pathways for fluid flow in reservoirs, while bedding fractures are more developed, which are not only seepage channels for reservoir fluid but also an important part of the effective storage space. The research results provide an important reference for improving the classification scheme of natural fractures in deep continental shale and for better understanding of the natural fracture distribution in such reservoirs.

       

    • loading
    • Aghli, G., Moussavi-Harami, R., Mohammadian, R., 2020. Reservoir Heterogeneity and Fracture Parameter Determination Using Electrical Image Logs and Petrophysical Data (a Case Study, Carbonate Asmari Formation, Zagros Basin, SW Iran). Petroleum Science, 17(1): 51-69. https://doi.org/10.1007/s12182-019-00413-0
      Baud, P., Rolland, A., Heap, M., et al., 2016. Impact of Stylolites on the Mechanical Strength of Limestone. Tectonophysics, 690: 4-20. https://doi.org/10.1016/j.tecto.2016.03.004
      Cao, Z., Liu, G. D., Kong, Y. H., et al., 2016. Lacustrine Tight Oil Accumulation Characteristics: Permian Lucaogou Formation in Jimusaer Sag, Junggar Basin. International Journal of Coal Geology, 153: 37-51. https://doi.org/10.1016/j.coal.2015.11.004
      Ding, W. L., Xu, C. C., Jiu, K., et al., 2011. The Research Progress of Shale Fractures. Advances in Earth Science, 26(2): 135-144 (in Chinese with English abstract).
      Gale, J. F. W., Lander, R. H., Reed, R. M., et al., 2010. Modeling Fracture Porosity Evolution in Dolostone. Journal of Structural Geology, 32(9): 1201-1211. https://doi.org/10.1016/j.jsg.2009.04.018
      Gale, J. F. W., Laubach, S. E., Olson, J. E., et al., 2014. Natural Fractures in Shale: A Review and New Observations. AAPG Bulletin, 98(11): 2165-2216. https://doi.org/10.1306/08121413151
      Gong, L., Zeng, L. B., Du, Y. J., et al., 2015. Influences of Structural Diagenesis on Fracture Effectiveness: A Case Study of the Cretaceous Tight Sandstone Reservoirs of Kuqa Foreland Basin. Journal of China University of Mining & Technology, 44(3): 514-519 (in Chinese with English abstract).
      He, W. J., Qian, Y. X., Zhao, Y., et al., 2021. Exploration Implications of Total Petroleum System in Fengcheng Formation, Mahu Sag, Junggar Basin. Xinjiang Petroleum Geology, 42(6): 641-655 (in Chinese with English abstract).
      Huang, Y. Y., Wang, G. W., Song, L. T., et al., 2022. Fracture Logging Identification and Effectiveness Analysis of Shale Reservoir of the Permian Fengcheng Formation in Mahu Sag, Junggar Basin. Journal of Palaeogeography (Chinese Edition), 24(3): 540-555 (in Chinese with English abstract).
      Jin, J., Yang, Z., Yilihamu, E., et al., 2018. Nanopore Characteristics and Oil-Bearing Properties of Tight Oil Reservoirs in Jimsar Sag, Junggar Basin. Earth Science, 43(5): 1594-1601 (in Chinese with English abstract).
      Jin, Z. J., Bai, Z. R., Gao, B., et al., 2019. Has China Ushered in the Shale Oil and Gas Revolution? Oil & Gas Geology, 40(3): 451-458 (in Chinese with English abstract).
      Jin, Z. J., Liang, X. P., Wang, X. J., et al., 2022. Shale Oil Enrichment Mechanism and Sweet Spot Selection of Fengcheng Formation in Mahu Sag, Junggar Basin. Xinjiang Petroleum Geology, 43(6): 631-639 (in Chinese with English abstract).
      Jin, Z. J., Zhu, R. K., Liang, X. P., et al., 2021. Several Issues Worthy of Attention in Current Lacustrine Shale Oil Exploration and Development. Petroleum Exploration and Development, 48(6): 1276-1287 (in Chinese with English abstract).
      Ju, W., You, Y., Feng, S. B., et al., 2020. Characteristics and Genesis of Bedding-Parallel Fractures in Tight Sandstone Reservoirs of Chang 7 Oil Layer, Ordos Basin. Oil & Gas Geology, 41(3): 596-605 (in Chinese with English abstract).
      Kuang, L. C., Tang, Y., Lei, D. W., et al., 2012. Formation Conditions and Exploration Potential of Tight Oil in the Permian Saline Lacustrine Dolomitic Rock, Junggar Basin, NW China. Petroleum Exploration and Development, 39(6): 657-667 (in Chinese with English abstract).
      Kuang, L. C., Zhi, D. M., Wang, X. J., et al., 2021. Oil and Gas Accumulation Assemblages in Deep to Ultra-Deep Formations and Exploration Targets of Petroliferous Basins in Xinjiang Region. China Petroleum Exploration, 26(4): 1-16 (in Chinese with English abstract).
      Laubach, S. E., Reed, R. M., Olson, J. E., et al., 2004. Coevolution of Crack-Seal Texture and Fracture Porosity in Sedimentary Rocks: Cathodoluminescence Observations of Regional Fractures. Journal of Structural Geology, 26(5): 967-982. https://doi.org/10.1016/j.jsg.2003.08.019
      Lei, H. Y., Guo, P., Meng, Y., et al., 2022. Pore Structure and Classification Evaluation of Shale Oil Reservoirs of Permian Fengcheng Formation in Mahu Sag. Lithologic Reservoirs, 34(3): 142-153 (in Chinese with English abstract).
      Li, M. W., Jin, Z. J., Dong, M. Z., et al., 2020. Advances in the Basic Study of Lacustrine Shale Evolution and Shale Oil Accumulation. Petroleum Geology & Experiment, 42(4): 489-505 (in Chinese with English abstract).
      Li, Y. L., Lu, S. L., Xia, D. L., et al., 2022. Development Characteristics and Main Controlling Factors of Natural Fractures in Shale Series of the Seventh Member of the Yanchang Formation, Southern Ordos Basin. Chinese Journal of Geology (Scientia Geologica Sinica), 57(1): 73-87 (in Chinese with English abstract).
      Liu, G. P., Jin, Z. J., Zeng, L. B., et al., 2023. Natural Fractures in Deep Continental Shale Oil Reservoirs: A Case Study from the Permian Lucaogou Formation in the Eastern Junggar Basin, Northwest China. Journal of Structural Geology, 174(1): 104913. https://doi.org/10.1016/j.jsg.2023.104913
      Liu, G. P., Zeng, L. B., Wang, X. J., et al., 2020. Natural Fractures in Deep Tight Gas Sandstone Reservoirs in the Thrust Belt of the Southern Junggar Basin, Northwestern China. Interpretation, 8(4): SP81-SP93. https://doi.org/10.1190/int-2020-0051.1
      Liu, G. P., Zeng, L. B., Zhu, R. K., et al., 2021. Effective Fractures and Their Contribution to the Reservoirs in Deep Tight Sandstones in the Kuqa Depression, Tarim Basin, China. Marine and Petroleum Geology, 124: 104824. https://doi.org/10.1016/j.marpetgeo.2020.104824
      Liu, J. S., Ding, W. L., Yang, H. M., et al., 2023. Natural Fractures and Rock Mechanical Stratigraphy Evaluation in Huaqing Area, Ordos Basin: A Quantitative Analysis Based on Numerical Simulation. Earth Science, 48(7): 2572-2588 (in Chinese with English abstract).
      Tian, H., Zeng, L. B., Xu, X., et al., 2020. Characteristics of Natural Fractures in Marine Shale in Fuling Area, Sichuan Basin, and Their Influence on Shale Gas. Oil & Gas Geology, 41(3): 474-483 (in Chinese with English abstract).
      Toussaint, R., Aharonov, E., Koehn, D., et al., 2018. Stylolites: A Review. Journal of Structural Geology, 114: 163-195. https://doi.org/10.1016/j.jsg.2018.05.003
      Wang, J., Zhou, L., Liu, J., et al., 2022. Genetic Mechanism of the Huxiang Hydrothermal Dolomite: A Case Study of the Permian Fengcheng Formation in the Mahu Sag, Junggar Basin. Acta Sedimentologica Sinica, 42(1): 1-16 (in Chinese with English abstract). doi: 10.1016/j.chnaes.2020.10.010
      Wang, X. J., Cui, B. W., Feng, Z. H., et al., 2023. In- Situ Hydrocarbon Formation and Accumulation Mechanisms of Micro- and Nano-Scale Pore-Fracture in Gulong Shale, Songliao Basin, NE China. Petroleum Exploration and Development, 50(6): 1269-1281. https://doi.org/10.1016/s1876-3804(24)60465-9
      Wu, S. T., Zhu, R. K., Cui, J. G., et al., 2015. Characteristics of Lacustrine Shale Porosity Evolution, Triassic Chang 7 Member, Ordos Basin, NW China. Petroleum Exploration and Development, 42(2): 167-176 (in Chinese with English abstract). doi: 10.1016/S1876-3804(15)30003-3
      Yang, Z., Zou, C. N., Wu, S. T., et al., 2019. Formation, Distribution and Resource Potential of the "Sweet Areas (Sections)" of Continental Shale Oil in China. Marine and Petroleum Geology, 102: 48-60. https://doi.org/10.1016/j.marpetgeo.2018.11.049
      Zeng, L. B., Lyu, W. Y., Li, J., et al., 2016. Natural Fractures and Their Influence on Shale Gas Enrichment in Sichuan Basin, China. Journal of Natural Gas Science and Engineering, 30: 1-9. https://doi.org/10.1016/j.jngse.2015.11.048
      Zeng, L. B., Gong, L., Zu, K. W., et al., 2012. Influence Factors on Fracture Validity of the Paleogene Reservoir, Western Qaidam Basin. Acta Geologica Sinica, 86(11): 1809-1814 (in Chinese with English abstract).
      Zeng, L. B., Ma, S. J., Tian, H., et al., 2023. Research Progress of Natural Fractures in Organic Rich Shale. Earth Science, 48(7): 2427-2442 (in Chinese with English abstract).
      Zeng, L. B., Tang, X. M., Wang, T. C., et al., 2012. The Influence of Fracture Cements in Tight Paleogene Saline Lacustrine Carbonate Reservoirs, Western Qaidam Basin, Northwest China. AAPG Bulletin, 96(11): 2003-2017. https://doi.org/10.1306/04181211090
      Zhang, Y. Z., Zeng, L. B., Luo, Q., et al., 2018. Research on the Types and Genetic Mechanisms of Tight Reservoir in the Lucaogou Formation in Jimusar Sag, Junggar Basin. Natural Gas Geoscience, 29(2): 211-225 (in Chinese with English abstract).
      Zhang, Y. Z., Zeng, L. B., Luo, Q., et al., 2020. Effects of Diagenesis on Natural Fractures in Tight Oil Reservoirs: A Case Study of the Permian Lucaogou Formation in Jimusar Sag, Junggar Basin, NW China. Geological Journal, 55(9): 6562-6579. https://doi.org/10.1002/gj.3822
      Zhang, Z. C., Liu, K. Q., Wang, Z. L., et al., 2024. Detailed Characterization of Pore Results of Continental Shale Reservoir in Fengcheng Formation, Mahu Sag. ACS Omega, 9(21): 22923-22940. https://doi.org/10.1021/acsomega.4c02056
      Zhao, W. Z., Hu, S. Y., Hou, L. H., et al., 2020. Types and Resource Potential of Continental Shale Oil in China and Its Boundary with Tight Oil. Petroleum Exploration and Development, 47(1): 1-10 (in Chinese with English abstract). doi: 10.1016/S1876-3804(20)60001-5
      Zhi, D. M., Tang, Y., He, W. J., et al., 2021. Orderly Coexistence and Accumulation Models of Conventional and Unconventional Hydrocarbons in Lower Permian Fengcheng Formation, Mahu Sag, Junggar Basin. Petroleum Exploration and Development, 48(1): 38-51 (in Chinese with English abstract).
      Zhi, D. M., Tang, Y., Zheng, M. L., et al., 2019. Geological Characteristics and Accumulation Controlling Factors of Shale Reservoirs in Fengcheng Formation, Mahu Sag, Junggar Basin. China Petroleum Exploration, 24(5): 615-623 (in Chinese with English abstract).
      Zhou, T., Wang, H. B., Li, F. X., et al., 2020. Numerical Simulation of Hydraulic Fracture Propagation in Laminated Shale Reservoirs. Petroleum Exploration and Development, 47(5): 1039-1051 (in Chinese with English abstract).
      Zolitschka, B., Francus, P., Ojala, A. E. K., et al., 2015. Varves in Lake Sediments: A Review. Quaternary Science Reviews, 117: 1-41. https://doi.org/10.1016/j.quascirev.2015.03.019
      Zou, C. N., Yang, Z., Wang, H. Y., et al., 2019. "Exploring Petroleum Inside Source Kitchen": Jurassic Unconventional Continental Giant Shale Oil & Gas Field in Sichuan Basin, China. Acta Geologica Sinica, 93(7): 1551-1562 (in Chinese with English abstract).
      Zou, Y. S., Zhang, S. C., Zhou, T., et al., 2016. Experimental Investigation into Hydraulic Fracture Network Propagation in Gas Shales Using CT Scanning Technology. Rock Mechanics and Rock Engineering, 49(1): 33-45. https://doi.org/10.1007/s00603-015-0720-3
      丁文龙, 许长春, 久凯, 等, 2011. 泥页岩裂缝研究进展. 地球科学进展, 26(2): 135-144. https://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ201102003.htm
      巩磊, 曾联波, 杜宜静, 等, 2015. 构造成岩作用对裂缝有效性的影响: 以库车前陆盆地白垩系致密砂岩储层为例. 中国矿业大学学报, 44(3): 514-519. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD201503017.htm
      何文军, 钱永新, 赵毅, 等, 2021. 玛湖凹陷风城组全油气系统勘探启示. 新疆石油地质, 42(6): 641-655. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202106002.htm
      黄玉越, 王贵文, 宋连腾, 等, 2022. 准噶尔盆地玛湖凹陷二叠系风城组页岩储集层裂缝测井识别与有效性分析. 古地理学报, 24(3): 540-555. https://www.cnki.com.cn/Article/CJFDTOTAL-GDLX202203010.htm
      靳军, 杨召, 依力哈木·尔西丁, 等, 2018. 准噶尔盆地吉木萨尔凹陷致密油储层纳米孔隙特征及其含油性. 地球科学, 43(5): 1594-1601. doi: 10.3799/dqkx.2018.415
      金之钧, 白振瑞, 高波, 等, 2019. 中国迎来页岩油气革命了吗? 石油与天然气地质, 40(3): 451-458. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT201903002.htm
      金之钧, 梁新平, 王小军, 等, 2022. 玛湖凹陷风城组页岩油富集机制与甜点段优选. 新疆石油地质, 43(6): 631-639. https://www.cnki.com.cn/Article/CJFDTOTAL-XJSD202206001.htm
      金之钧, 朱如凯, 梁新平, 等, 2021. 当前陆相页岩油勘探开发值得关注的几个问题. 石油勘探与开发, 48(6): 1276-1287. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK202106021.htm
      鞠玮, 尤源, 冯胜斌, 等, 2020. 鄂尔多斯盆地延长组长7油层组致密砂岩储层层理缝特征及成因. 石油与天然气地质, 41(3): 596-605. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT202003016.htm
      匡立春, 唐勇, 雷德文, 等, 2012. 准噶尔盆地二叠系咸化湖相云质岩致密油形成条件与勘探潜力. 石油勘探与开发, 39(6): 657-667. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK201206004.htm
      匡立春, 支东明, 王小军, 等, 2021. 新疆地区含油气盆地深层‒超深层成藏组合与勘探方向. 中国石油勘探, 26(4): 1-16. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY202104001.htm
      雷海艳, 郭佩, 孟颖, 等, 2022. 玛湖凹陷二叠系风城组页岩油储层孔隙结构及分类评价. 岩性油气藏, 34(3): 142-153. https://www.cnki.com.cn/Article/CJFDTOTAL-YANX202203013.htm
      黎茂稳, 金之钧, 董明哲, 等, 2020. 陆相页岩形成演化与页岩油富集机理研究进展. 石油实验地质, 42(4): 489-505. https://www.cnki.com.cn/Article/CJFDTOTAL-SYSD202004004.htm
      李彦录, 陆诗磊, 夏东领, 等, 2022. 鄂尔多斯盆地南部延长组长7油组页岩层系天然裂缝发育特征及主控因素. 地质科学, 57(1): 73-87. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX202201004.htm
      刘敬寿, 丁文龙, 杨海盟, 等, 2023. 鄂尔多斯盆地华庆地区天然裂缝与岩石力学层演化——基于数值模拟的定量分析. 地球科学, 48(7): 2572-2588. doi: 10.3799/dqkx.2022.234
      田鹤, 曾联波, 徐翔, 等, 2020. 四川盆地涪陵地区海相页岩天然裂缝特征及对页岩气的影响. 石油与天然气地质, 41(3): 474-483. https://www.cnki.com.cn/Article/CJFDTOTAL-SYYT202003005.htm
      王剑, 周路, 刘金, 等, 2022. 湖相热液白云岩成因机理——以准噶尔盆地玛湖凹陷二叠系风城组为例. 沉积学报, 42(1): 1-16. https://www.cnki.com.cn/Article/CJFDTOTAL-CJXB202401010.htm
      吴松涛, 朱如凯, 崔京钢, 等, 2015. 鄂尔多斯盆地长7湖相泥页岩孔隙演化特征. 石油勘探与开发, 42(2): 167-176. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK201502006.htm
      曾联波, 巩磊, 祖克威, 等, 2012. 柴达木盆地西部古近系储层裂缝有效性的影响因素. 地质学报, 86(11): 1809-1814. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201211011.htm
      曾联波, 马诗杰, 田鹤, 等, 2023. 富有机质页岩天然裂缝研究进展. 地球科学, 48(7): 2427-2442. doi: 10.3799/dqkx.2022.190
      张云钊, 曾联波, 罗群, 等, 2018. 准噶尔盆地吉木萨尔凹陷芦草沟组致密储层裂缝特征和成因机制. 天然气地球科学, 29(2): 211-225. https://www.cnki.com.cn/Article/CJFDTOTAL-TDKX201802007.htm
      赵文智, 胡素云, 侯连华, 等, 2020. 中国陆相页岩油类型、资源潜力及与致密油的边界. 石油勘探与开发, 47(1): 1-10. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK202001002.htm
      支东明, 唐勇, 何文军, 等, 2021. 准噶尔盆地玛湖凹陷风城组常规‒非常规油气有序共生与全油气系统成藏模式. 石油勘探与开发, 48(1): 38-51. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK202101006.htm
      支东明, 唐勇, 郑孟林, 等, 2019. 准噶尔盆地玛湖凹陷风城组页岩油藏地质特征与成藏控制因素. 中国石油勘探, 24(5): 615-623. https://www.cnki.com.cn/Article/CJFDTOTAL-KTSY201905008.htm
      周彤, 王海波, 李凤霞, 等, 2020. 层理发育的页岩气储集层压裂裂缝扩展模拟. 石油勘探与开发, 47(5): 1039-1051. https://www.cnki.com.cn/Article/CJFDTOTAL-SKYK202005021.htm
      邹才能, 杨智, 王红岩, 等, 2019. "进源找油": 论四川盆地非常规陆相大型页岩油气田. 地质学报, 93(7): 1551-1562. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXE201907001.htm
    • 加载中

    Catalog

      通讯作者: 陈斌, bchen63@163.com
      • 1. 

        沈阳化工大学材料科学与工程学院 沈阳 110142

      1. 本站搜索
      2. 百度学术搜索
      3. 万方数据库搜索
      4. CNKI搜索

      Figures(12)  / Tables(1)

      Article views (521) PDF downloads(71) Cited by()
      Proportional views

      /

      DownLoad:  Full-Size Img  PowerPoint
      Return
      Return