Distribution and Development of Faults and Fractures in Shales

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Geochemistry and Geochronology".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1395

Special Issue Editors


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Guest Editor
Bohai-Rim Energy Research Institute, Northeast Petroleum University, Qinhuangdao 066004, China
Interests: unconventional oil and gas; sub-seismic faults and fractures; mechanical stratigraphy
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Guest Editor
Institute of Energy, Peking University, Beijing 100871, China
Interests: unconventional reservoir faults and fractures; structural diagenesis; reservoir quality evaluation
Research Department of Unconventional Oil and Gas, SINOPEC Petroleum Exploration and Production Research Institute, Beijing 102206, China
Interests: fracture and fault characterization of unconventional reservoir; diagenesis and evolution of unconventional reservoir; accumulation and enrichment mechanism of hydrocarbon in shale reservoir
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Guest Editor
College of Science, China University of Petroleum-Beijing, Beijing 102249, China
Interests: lithology identification; fractured reservoirs; machine learning; reservoir characterization; fracture modeling; petroleum geoscience

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Guest Editor
College of Civil Engineering, Guizhou University, Guiyang 550025, China
Interests: reservoir geomechanics; rock failure mechanism; natural fractures; rock mechanics

Special Issue Information

Dear Colleagues,

Fractures and faults are important storage spaces and seepage channels of shale reservoirs, which affect the enrichment law, preservation conditions, and individual well productivity of shale hydrocarbon; hence, they are important geological factors that need to be considered in shale oil and gas exploration. In recent years, with the large-scale exploration and development of shale oil and gas, many scholars have carried out extensive research on the development characteristics, formation mechanism, main control factors, evaluation and prediction methods, subsurface stress distribution, and the influence of fractures on the enrichment of shale oil and gas. The purpose of this Special Issue is to summarize the recent advances in the understanding of fracture and fault related to mineralogy, geology, geochemistry, and geophysics in shale reservoirs in recent years, promote and improve the theoretical and technical method system of fracture and fault research, and guide the exploration and development of shale oil and gas.

Prof. Dr. Lei Gong
Dr. Guoping Liu
Dr. Ruyue Wang
Dr. Shaoqun Dong
Dr. Zhonghu Wu
Guest Editors

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Keywords

  • preservation and enrichment of shale oil and gas
  • multi-scale fracture/fault identification technique
  • characterization and comprehensive evaluation of effective fractures
  • fracture formation mechanism, filling sequence, and chronology
  • structural diagenesis
  • reservoir geomechanics
  • fault sealing and stability

Published Papers (1 paper)

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Research

18 pages, 14451 KiB  
Article
Pore Structure and Heterogeneity Characteristics of Coal-Bearing Marine–Continental Transitional Shales from the Longtan Formation in the South Sichuan Basin, China
by Jizhen Zhang, Wei Lin, Mingtao Li, Jianguo Wang, Xiao Xiao and Yuchuan Chen
Minerals 2024, 14(6), 588; https://doi.org/10.3390/min14060588 - 2 Jun 2024
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Abstract
Marine–continental transitional shale has become a new field for shale gas exploration and development in recent years. Its reservoir characteristics analysis lags significantly behind that of marine shale, which restricts the theoretical research on the accumulation of marine–continental transitional shale and the progress [...] Read more.
Marine–continental transitional shale has become a new field for shale gas exploration and development in recent years. Its reservoir characteristics analysis lags significantly behind that of marine shale, which restricts the theoretical research on the accumulation of marine–continental transitional shale and the progress of exploration and development. The shale pore system is complex and has strong heterogeneity, which restricts the fine evaluation and optimization of the reservoir. Based on nitrogen adsorption–desorption experiments, the morphology and structural characteristics of coal-bearing shale pores were analyzed, and then the micro-pore structure heterogeneity was quantitatively characterized based on fractal theory and nitrogen adsorption–desorption data, and the relationship between pore structure parameters and their influence on fractal characteristics were discussed. The hysteresis loop of nitrogen desorption isotherm mainly belongs to type B, indicating ink bottle, flat plate, and slit are the main pore shapes. The pore size distribution curves are left unimodal or multimodal, with the main peak around 4 nm and 20–60 nm. Smaller pores develop a larger specific surface area, resulting in a high value of fractal dimension (2.564 to 2.677). The rougher the pore surface and the larger the specific surface area provide an adequate adsorption site for shale gas adsorption and aggregation. Thus, fractal characteristics conduced to understand the pore structure, heterogeneity, and gas-bearing property of coal-bearing shale. Full article
(This article belongs to the Special Issue Distribution and Development of Faults and Fractures in Shales)
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