IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i21p8041-d956905.html
   My bibliography  Save this article

Mathematical Model of Shale Oil Seepage at Micro-Nano Pore Scale

Author

Listed:
  • Linkai Li

    (State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, China
    Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Sheng Wang

    (No. 4 Gas Production Plant, Changqing Oilfield Company, PetroChina, Xi’an 710021, China)

  • Weijiang Jia

    (Shengli Directional Drilling Well Company, Sinopec, Dongying 257000, China)

  • Jun Luo

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Zhan Meng

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Jingjing Gou

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Hang Zhou

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Deyan Zhong

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Wenxin Xiu

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

  • Xinlin Bai

    (Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China)

Abstract

Due to the unclear seepage mechanism for shale oil, it is hard to establish a reasonable mathematical model to describe the flowing law. In this study, a real shale pore structure was reconstructed with CT scanning and a numerical model of fluid flowing in the real shale pore is developed with COMSOL, based on the boundary slip at the micro-nano pore scale to study the causes of nonlinear seepage. A two-fluid model is employed to establish a simple mathematical model to describe the relationship between the flow rate and the pressure gradient using the effective slip length to account for the influence of pore structure and true slip, and the established model is verified with experimental data coming from Jiyang shale oil. The results indicated that the pore structure greatly affected the shape of the seepage curve. With the increase in displacement pressure, the percentage of fluid involved in the flow increased until it became stable, showing a changing trend from nonlinearity to linearity. The established model can fit the experimental data well and reasonably characterize the nonlinear seepage of shale oil.

Suggested Citation

  • Linkai Li & Sheng Wang & Weijiang Jia & Jun Luo & Zhan Meng & Jingjing Gou & Hang Zhou & Deyan Zhong & Wenxin Xiu & Xinlin Bai, 2022. "Mathematical Model of Shale Oil Seepage at Micro-Nano Pore Scale," Energies, MDPI, vol. 15(21), pages 1-16, October.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8041-:d:956905
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/21/8041/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/21/8041/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Linkai Li & Xiao Guo & Ming Zhou & Gang Xiang & Ning Zhang & Yue Wang & Shengyuan Wang & Arnold Landjobo Pagou, 2021. "The Investigation of Fracture Networks on Heat Extraction Performance for an Enhanced Geothermal System," Energies, MDPI, vol. 14(6), pages 1-18, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Tomasz Sliwa & Tomasz Kowalski & Dominik Cekus & Aneta Sapińska-Śliwa, 2021. "Research on Fresh and Hardened Sealing Slurries with the Addition of Magnesium Regarding Thermal Conductivity for Energy Piles and Borehole Heat Exchangers," Energies, MDPI, vol. 14(16), pages 1-13, August.
    2. Xiang Gao & Tailu Li & Yao Zhang & Xiangfei Kong & Nan Meng, 2022. "A Review of Simulation Models of Heat Extraction for a Geothermal Reservoir in an Enhanced Geothermal System," Energies, MDPI, vol. 15(19), pages 1-23, September.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:15:y:2022:i:21:p:8041-:d:956905. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.