首页|Numerical evaluations on the fluid production in the in-situ conversion of continental shale oil reservoirs

Numerical evaluations on the fluid production in the in-situ conversion of continental shale oil reservoirs

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In-situ conversion presents a promising technique for exploiting continental oil shale formations,characterized by highly fractured organic-rich rock.A 3D in-situ conversion model,which incorporates a discrete fracture network,is developed using a self-developed thermal-flow-chemical(TFC)simulator.Analysis of the model elucidates the in-situ conversion process in three stages and defines the trans-formation of fluids into three distinct outcomes according to their end stages.The findings indicate that kerogen decomposition increases fluid pressure,activating fractures and subsequently enhancing permeability.A comprehensive analysis of activated fracture permeability and heating power reveals four distinct production modes,highlighting that increasing heating power correlates with higher cu-mulative fluid production.Activated fractures,with heightened permeability,facilitate the mobility of heavy oil toward production wells but hinder its cracking,thereby limiting light hydrocarbon production.Additionally,energy efficiency research demonstrates the feasibility of the in-situ conversion in terms of energy utilization,especially when considering the surplus energy from high-fluctuation energy sources such as wind and solar power to provide heating.

In-situ conversionContinental shale oilNatural fracture networkTFC model

Zhao-Bin Zhang、Maryelin Josefina Briceño Montilla、Shou-Ding Li、Xiao Li、Jian-Peng Xing、Yan-Zhi Hu

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Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,China

Institute of Earth Sciences,Chinese Academy of Sciences,Beijing,100049,China

College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,100049,China

Institute of Energy,Peking University,Beijing 100871,China

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2024

10.1016/j.petsci.2024.05.025

石油科学(英文版)
中国石油大学（北京）

石油科学(英文版)

EI
影响因子：0.88
ISSN：1672-5107
年,卷(期)：2024.21(4)