Coalbed Methane Development Process

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 377

Special Issue Editors


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Guest Editor
School of Energy, China University of Geosciences, Beijing 100083, China
Interests: gas content; coalbed methane simulation; CO2-ECBM

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Guest Editor
Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China
Interests: petrophysics; coal petrology; organic geochemistry; CO2-ECBM

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Guest Editor
College of Geological and Surveying Engineering, Taiyuan University of Technology, Taiyuan 030006, China
Interests: coalbed methane; numerical simulation; coal reservoir evaluation

Special Issue Information

Dear Colleagues,

With the global demand for clean energy continuously increasing, reducing greenhouse gas emissions has become a consensus within the international community. Coalbed methane, as an unconventional natural gas resource, is favored for its low-carbon characteristics. Effective exploration and development of coalbed methane not only provide valuable energy sources but also reduce methane emissions during coal mining, holding significant resource and environmental implications. The development of deep coalbed methane represents the latest breakthrough in this field. Compared to shallow coalbed methane, the exploration and development of deep coalbed methane are more challenging. Deep reservoirs are typically located thousands of meters underground, facing complex geological conditions known as “four highs and two lows” (high temperature, high pressure, high geostatic stress, high free-gas content, low porosity, and low permeability). This necessitates more advanced technologies for drilling and completion, core evaluation, geophysical interpretation, and reservoir development. However, with continuous technological advancements, although numerous challenges remain, the exploration and development of deep coalbed methane have become increasingly feasible. In summary, the exploration and development of coalbed methane are at an exciting juncture. Through sustained technological innovation, coalbed methane is poised to occupy a more prominent position in the global energy structure, making a positive contribution to achieving sustainable development goals. This special issue aims to gather the latest research findings and innovative practices in this field, delving into how cutting-edge technologies can enhance the efficiency and benefits of coalbed methane exploration and development.

This Special Issue explores the latest developments in coalbed methane exploration and development. Topics include, but are not limited to, the following: new theories and methods in coalbed methane geological exploration (evaluation technology of gas content in deep coal seams, simulation technology of coal macromolecule adsorption, evaluation technology of coal reservoir permeability, evaluation technology of coal reservoir fracturability, and numerical simulation technology of coalbed methane, etc.); innovations and applications in coalbed methane development technologies; the chemistry of produced water from coalbed methane wells; the treatment of produced water; the environmental effects of produced water (drilling and completion technology, fracturing technology, optimization technology of well pattern and well spacing, optimization technology of gas drainage, CO2-ECBM, etc.); and environmental protection measures during coalbed methane extraction (the chemistry of produced water from coalbed methane wells, the treatment of produced water, the environmental effects of produced water, etc.). The submissions should be presented in the form of academic papers, review articles, etc.

We look forward to your submissions.

Prof. Dr. Songhang Zhang
Prof. Dr. Qiulei Guo
Dr. Xinlu Yan
Guest Editors

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Keywords

  • deep coalbed methane
  • exploration and development
  • technological advancements
  • coal reservoir
  • gas content
  • water chemistry
  • CO2-enhanced coalbed methane
  • coalbed methane numerical simulation
  • dewatering optimization
  • production patterns and law of coalbed methane wells

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Published Papers (1 paper)

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Research

14 pages, 5234 KiB  
Article
Experimental Study on Temperature Field Monitoring Methods During Gas Discharge in Coal Seams
by Feng Zhang, Jilin Shao and Ruihe Zhou
Processes 2025, 13(5), 1295; https://doi.org/10.3390/pr13051295 - 24 Apr 2025
Viewed by 143
Abstract
The evolution of the coal seam temperature field is the key factor affecting gas extraction efficiency during heat injection, but its change law under different drilling layout schemes and heat injection methods is not clear, and achieving real-time monitoring is difficult. In order [...] Read more.
The evolution of the coal seam temperature field is the key factor affecting gas extraction efficiency during heat injection, but its change law under different drilling layout schemes and heat injection methods is not clear, and achieving real-time monitoring is difficult. In order to simply and quickly understand underground temperature field change, we conducted an experimental study of the temperature–resistivity correlation law; we based our study on the theory that rock resistivity changes accordingly with temperature. To study the relationship between rock resistivity and temperature, both indoor and outdoor experiments were performed. Multiple sets of rock sample heating experiments were conducted indoors on sandstone, mudstone, coal, and tuff, and a regression equation for the relationship between temperature rise and resistivity change was established. In situ heating experiments were conducted on mudstone rock masses at an underground field test site. Special geophysical equipment was used to obtain rock resistivity data corresponding to each temperature change stage. By processing and analyzing the obtained data, the actual situation of in situ saturated rock resistivity changes during temperature increase can be understood. According to the experiments, after a temperature increase of 20 °C, the resistivity of the rock decreases to approximately 80% of its initial level. After the temperature increases by 40 degrees, resistivity decreases to approximately 70% of the initial value. After a temperature increase of 70 degrees, it decreases to less than 50% of the initial resistivity. The results of indoor and outdoor in situ experiments show that by using electrical geophysical equipment to monitor changes in the electrical resistivity of rock masses, it is possible to understand the temperature change areas of underground rock masses in a timely manner. This study provides basic data for the real-time monitoring of changes in underground coalbed methane (CBM) temperature fields, which is expected to improve the efficiency of CBM mining by guiding and optimizing the drilling layout scheme and heat injection mode. Full article
(This article belongs to the Special Issue Coalbed Methane Development Process)
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