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Research on Efficient Development Technology of Chang7 Shale Reservoir of Ordos Basin

Received: 5 November 2022     Accepted: 28 November 2022     Published: 8 December 2022
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Abstract

In view of the ordos basin Chang7 shale oil "pressure-stuffy-mining" shown in the process of "horizontal length is uneven, the drilling time after large volume fracturing, and drainage system strength is different", by the analysis of indoor experiments, numerical simulation and mine production data, comprehensive study regional geological characteristics and investment cost, optimize the length of the volume fracturing in ordos basin Chang7 shale oil reservoir efficient development technology policy. studies have shown: (1) Based on the relationship between geological characteristics of the study area and horizontal section length and production and single well investment, the reasonable horizontal section length in this area should be controlled at about 1500m; (2) The seepage process is mainly oil and water displacement in small pores for oil displacement, and the formation pressure time is 30-45 days; (3) Horizontal well return strength is large, and the oil time is relatively fast, but with the increase of the return strength, the horizontal well sand is serious, and the artificial crack diversion capacity is reduced; (4) Establishes the single well based reservoir classification structure of shale oil, based on the change characteristics of flow filling ratio in the return stage. The research results will effectively guide the development and production of shale oil reservoir in the combined area of Ordos Basin.

Published in Engineering and Applied Sciences (Volume 7, Issue 6)
DOI 10.11648/j.eas.20220706.12
Page(s) 85-92
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Ordos Basin, Shale Oil, Volume Fracturing, Efficient Development Technology, Reasonable Production System

References
[1] Jia Chengzao, Zheng Min, Zhang Yongfeng. Unconventional oil and gas resources and exploration and development prospects in China [J]. Petroleum exploration and development, 2012, 39 (2): 129-136.
[2] Zou CAI cai, Li Jianzhong, et al. Evaluation criteria, main types, basic characteristics and resource prospects of tight oil in China [J]. The Journal of the Petroleum Sciences, 2012, 33 (3): 343-350.
[3] Zhang Guosheng, Yang Zhi, et al. Unconventional oil and gas concept, characteristics, potential and technology- - -Unconventional oil and gas geology [J]. Petroleum exploration and development, 2013, 40 (4): 385-399.
[4] Yang Zhi, Hou Lianhua, Tao Shizhen, et al. Conditions of tight oil and shale oil and "dessert area" evaluation [J]. The Petroleum Exploration and Development, 2015, 42 (5): 555-565.
[5] Yang Hua, Li Shixiang, Liu Xianyang, et al. Characteristics of tight oil and shale oil and its resource potential in the Ordos Basin [J]. The Journal of Petroleum, 2013, 34 (1): 1-11.
[6] Fu Jinhua, Li Shixiang, Niu Xiaobing, Deng Xiuqin, Zhou Xinping. Geological Characteristics and Exploration Practice of Shale Oil in 7 Triassic Formation in Ordos Basin [J]. Petroleum exploration and development, 2020, v. 47; No. 278 (05): 870-883.
[7] Wang Minglei, Zhang Sui'an, Zhang Fudong, et al. Quantitative study on microscopic occurrence form of 7 sections of Ordos Basin [J]. Petroleum Exploration and Development, 2015, 42 (6): 757-762.
[8] Zhang Fudong, Guan Hui, et al. A New Bottom Oil Evaluation Method and Its Application- -Take Section 7 of the Bottight oil of the Ordos Basin Extension Group leader as an example [J]. Unconventional Oil and gas, 2015, 2 (2): 10-15.
[9] Kenyon W E. Petrophysical principles of applications of NMR logging [J]. Log Analyst, 1997, 38 (2): 21-40.
[10] Xiao L, Mao Z Q, Wang Z N, et al. Application of NMR logs in tight gas reservoirs for formation evaluation: A case study of Sichuan basin in China [J]. Journal of Petroleum Science & Engineering, 2012, 81 (2): 182-195.
[11] Yan WC, Sun JM, Cheng ZG, et al. Petrophysical characterization of tight oil formations using 1D and 2D NMR [J]. Fuel, 2017, 206: 89-98.
[12] Yang Zhengming, Liu Xuewei, Li Haibo, et al. Analysis of influencing factors of permeability and evaluation of permeability [J]. Petroleum Exploration and Development, 2019, 46 (04): 739-745.
[13] Yang, Z. M, Liu, X. W., Li, H. B, et al. Analysis on the influencing factors of imbibition and the effect evaluation of imbibition in tight reservoirs [J]. Petroleum Exploration and Development, 2019, 46 (04): 739-745.
[14] YANG, P., GUO, H. K., YANG, D. Y. Determination of residual oil distribution during waterflooding in tight oil formations with NMR relaxometry measurements [J]. Energy & Fuels, 2013, 27 (10): 5750-5756.
[15] CHEN, M., DAI, J. C., LIU, X. J, et al. Effect of displacement rates on fluid distributions and dynamics during water flooding in tight oil sandstone cores from nuclear magnetic resonance (NMR) [J]. Journal of Petroleum Science and Engineering, 2020, 184: 106588.
Cite This Article
  • APA Style

    Dang Chenyue, Zhang Yuliang, Chai Xiaoyong, Ding Zhenkun, Dang Yongchao. (2022). Research on Efficient Development Technology of Chang7 Shale Reservoir of Ordos Basin. Engineering and Applied Sciences, 7(6), 85-92. https://doi.org/10.11648/j.eas.20220706.12

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    ACS Style

    Dang Chenyue; Zhang Yuliang; Chai Xiaoyong; Ding Zhenkun; Dang Yongchao. Research on Efficient Development Technology of Chang7 Shale Reservoir of Ordos Basin. Eng. Appl. Sci. 2022, 7(6), 85-92. doi: 10.11648/j.eas.20220706.12

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    AMA Style

    Dang Chenyue, Zhang Yuliang, Chai Xiaoyong, Ding Zhenkun, Dang Yongchao. Research on Efficient Development Technology of Chang7 Shale Reservoir of Ordos Basin. Eng Appl Sci. 2022;7(6):85-92. doi: 10.11648/j.eas.20220706.12

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  • @article{10.11648/j.eas.20220706.12,
      author = {Dang Chenyue and Zhang Yuliang and Chai Xiaoyong and Ding Zhenkun and Dang Yongchao},
      title = {Research on Efficient Development Technology of Chang7 Shale Reservoir of Ordos Basin},
      journal = {Engineering and Applied Sciences},
      volume = {7},
      number = {6},
      pages = {85-92},
      doi = {10.11648/j.eas.20220706.12},
      url = {https://doi.org/10.11648/j.eas.20220706.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20220706.12},
      abstract = {In view of the ordos basin Chang7 shale oil "pressure-stuffy-mining" shown in the process of "horizontal length is uneven, the drilling time after large volume fracturing, and drainage system strength is different", by the analysis of indoor experiments, numerical simulation and mine production data, comprehensive study regional geological characteristics and investment cost, optimize the length of the volume fracturing in ordos basin Chang7 shale oil reservoir efficient development technology policy. studies have shown: (1) Based on the relationship between geological characteristics of the study area and horizontal section length and production and single well investment, the reasonable horizontal section length in this area should be controlled at about 1500m; (2) The seepage process is mainly oil and water displacement in small pores for oil displacement, and the formation pressure time is 30-45 days; (3) Horizontal well return strength is large, and the oil time is relatively fast, but with the increase of the return strength, the horizontal well sand is serious, and the artificial crack diversion capacity is reduced; (4) Establishes the single well based reservoir classification structure of shale oil, based on the change characteristics of flow filling ratio in the return stage. The research results will effectively guide the development and production of shale oil reservoir in the combined area of Ordos Basin.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Research on Efficient Development Technology of Chang7 Shale Reservoir of Ordos Basin
    AU  - Dang Chenyue
    AU  - Zhang Yuliang
    AU  - Chai Xiaoyong
    AU  - Ding Zhenkun
    AU  - Dang Yongchao
    Y1  - 2022/12/08
    PY  - 2022
    N1  - https://doi.org/10.11648/j.eas.20220706.12
    DO  - 10.11648/j.eas.20220706.12
    T2  - Engineering and Applied Sciences
    JF  - Engineering and Applied Sciences
    JO  - Engineering and Applied Sciences
    SP  - 85
    EP  - 92
    PB  - Science Publishing Group
    SN  - 2575-1468
    UR  - https://doi.org/10.11648/j.eas.20220706.12
    AB  - In view of the ordos basin Chang7 shale oil "pressure-stuffy-mining" shown in the process of "horizontal length is uneven, the drilling time after large volume fracturing, and drainage system strength is different", by the analysis of indoor experiments, numerical simulation and mine production data, comprehensive study regional geological characteristics and investment cost, optimize the length of the volume fracturing in ordos basin Chang7 shale oil reservoir efficient development technology policy. studies have shown: (1) Based on the relationship between geological characteristics of the study area and horizontal section length and production and single well investment, the reasonable horizontal section length in this area should be controlled at about 1500m; (2) The seepage process is mainly oil and water displacement in small pores for oil displacement, and the formation pressure time is 30-45 days; (3) Horizontal well return strength is large, and the oil time is relatively fast, but with the increase of the return strength, the horizontal well sand is serious, and the artificial crack diversion capacity is reduced; (4) Establishes the single well based reservoir classification structure of shale oil, based on the change characteristics of flow filling ratio in the return stage. The research results will effectively guide the development and production of shale oil reservoir in the combined area of Ordos Basin.
    VL  - 7
    IS  - 6
    ER  - 

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Author Information
  • Department of Geology, Northwest University, Xi’an, China

  • Shale Oil Branch of Changqing Oilfield, Qingyang, China

  • Shale Oil Branch of Changqing Oilfield, Qingyang, China

  • Shale Oil Branch of Changqing Oilfield, Qingyang, China

  • Shale Oil Branch of Changqing Oilfield, Qingyang, China

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