4.7 Article

Mechanisms and field application of in-situ heat injection-enhanced gas drainage

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Thermodynamics

Effect of CO2 injection on CH4 desorption rate in poor permeability coal seams: An experimental study

Gang Bai et al.

Summary: Injecting CO2 into coal seams is an effective way to increase methane recovery. Research shows that when the CO2 injection amount is below the critical value, the desorption amount of CH4, CO2 storage, and gas content all increase; when the injection amount exceeds the critical value, all parameters except for the CH4 desorption amount increase.

ENERGY (2022)

Article Thermodynamics

N2 injection to enhance coal seam gas drainage (N2-ECGD): Insights from underground field trial investigation

Xin Yang et al.

Summary: This study conducted exploratory tests of N-2-ECGD in underground low-gas coal seams, finding that continuous N-2 injection can promote the desorption of CH4 in the coal pores. Field trials showed an EPI of 0.45 MPa, with a significant increase in gas flow rate after N-2 injection, while the CH4 concentration decreased but the CH4 flow rate remained high.

ENERGY (2022)

Article Materials Science, Multidisciplinary

Mathematical Model and Numerical Simulation of Coalbed Methane Migration Considering the Adsorption Expansion Effect

Jianlin Xie et al.

Summary: The influence of gas adsorption and desorption on coal deformation was investigated through experiments and numerical simulations. A mathematical model considering the coupling effects of heat transfer, deformation, and seepage was established. The experimental results showed that coal deformation has a threshold value, and the deformation increases sharply when the gas content reaches the threshold. The simulation results demonstrated that continuous heat injection promotes rapid gas desorption in the coal seam, leading to an elliptical funnel-shaped distribution of adsorbed gas content.

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING (2022)

Article Energy & Fuels

Engineering practice of underground heat injection-enhanced gas extraction in low-permeability coal seams

Linjie Hu et al.

Summary: The heat injection mechanism was studied to improve gas desorption, coal seam gas pressure, and coal seam permeability in the Yangquan mining area. A heat injection-enhanced gas extraction technology was proposed, which resulted in efficient gas extraction and halved extraction time.

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS (2022)

Article Energy & Fuels

Study on the behavior and mechanism of methane desorption-diffusion for multi-scale coal samples under multi-temperature conditions

Dong Zhao et al.

Summary: This paper investigates the effect of thermal action on the enhanced methane desorption-diffusion characteristics of multi-scale coal samples under different conditions. The relationship between temperature and diffusion coefficient can be described by the modified Arrhenius equation. Thermal action has a significant enhanced effect on methane release in large size coal samples and at low adsorption pressure.
Article Energy & Fuels

Power ultrasound assisted coalbed methane enhancement recovery: Field application and performance evaluation in underground coal mine

Peng Liu et al.

Summary: This study demonstrates the effectiveness of high power ultrasound in enhancing coalbed methane recovery through in-situ testing in an underground coal seam, showing the potential application value of ultrasound anti-reflection technology in coalbed methane production.
Article Engineering, Multidisciplinary

Numerical Simulation and Optimization of Microwave Heating Effect on Coal Seam Permeability Enhancement

Ali Jebelli et al.

Summary: This study investigates the parameters affecting the distribution of electric and thermal fields in coal mining operations. It finds that the size of the resonance chamber is the most important parameter and that a moisture content of 5%, the highest input power, and a cutoff frequency close to the operating frequency result in the highest average temperature in the coal.

TECHNOLOGIES (2022)

Review Geosciences, Multidisciplinary

New Mechanical Model of Slotting-Directional Hydraulic Fracturing and Experimental Study for Coalbed Methane Development

Jianyu Zhong et al.

Summary: This study proposed a new slotting-directional hydraulic fracturing (NSDHF) mechanical model based on theoretical mechanisms, and validated the accuracy of the model through experiments. The research found that the influence of non-uniform pore water pressure on directional distance was significant, exceeding the effect of stress interference between adjacent slotted holes. The verified NSDHF model can be further used to study the impact of various factors on directional distance in low-permeability coal mines.

NATURAL RESOURCES RESEARCH (2021)

Article Thermodynamics

Investigation on the microwave heating technology for coalbed methane recovery

Wenjian Lan et al.

Summary: This paper presents a new microwave heating technology for coalbed methane (CBM) and designs optimized structure of microwave antenna for heating. Numerical simulations and experimental verification show that the technology can efficiently raise the temperature of coal reservoir and enhance the CBM production.

ENERGY (2021)

Article Energy & Fuels

Experimental study on the evolution of pore-fracture structures and mechanism of permeability enhancement in coal under cyclic thermal shock

Changbao Jiang et al.

Summary: Cyclic thermal shock can effectively promote the generation and expansion of permeability pores, connect relatively independent fracture structures, and break and expand microfractures and pore groups to form an interwoven fracture network.
Review Energy & Fuels

Review on Coal Bed Methane Recovery Theory and Technology: Recent Progress and Perspectives

Weiguo Liang et al.

Summary: Coal bed methane (CBM) is a primary clean energy source found in coal seams, but its recovery ratio is very low due to strong adsorption and low permeability. A theory of enhanced CBM recovery by energy stimulation, including SCCO2 fracturing and thermal fracturing, has been proposed. Experimental results show that SCCO2 has higher transportation capacity than gaseous CO2 in coal beds, and total permeability decreases as its content increases in the system with CH4.

ENERGY & FUELS (2021)

Article Energy & Fuels

Gas desorption characteristics and related mechanism analysis under the action of superheated steam and pressurized water based on an experimental study

Xiaowei Li et al.

Summary: The research found that gas desorption capacity is significantly influenced by adsorption pressure, while particle size mainly affects gas release rate during desorption. Water injection inhibits gas desorption through four inhibition mechanisms, while superheated steam provides energy for desorption and increases gas desorption capacity and effective diffusion coefficient.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2021)

Article Chemistry, Multidisciplinary

Experimental Study on the Effects of Different Heating Rates on Coalbed Methane Desorption and an Analysis of Desorption Kinetics

Zhijun Wang et al.

Summary: The experiment shows that different heating rates have a significant impact on the methane desorption process. Lower heating rates are more effective in promoting methane desorption and result in higher methane desorption levels throughout the entire desorption process.

ACS OMEGA (2021)

Article Energy & Fuels

A field application of methane drainage by surface vertical well fracturing in complicated geologic structure area: a case study

Lipeng Zhao et al.

Summary: The application of pre-drainage elimination outburst technology by surface vertical well fracturing (PDEO) in coal mining and coalbed methane development shows effectiveness, with different fracturing curve types affecting gas production in CBM wells. The study clarifies the control effects of geological structure on gas drainage, indicating the difficulty in achieving ideal drainage for CBM wells near water-rich abnormal areas.

ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS (2021)

Article Energy & Fuels

Integrated modeling of multi-scale transport in coal and its application for coalbed methane recovery

Yun Yang et al.

Summary: The exploitation of coalbed methane plays a crucial role in meeting natural gas demand and reducing greenhouse gas emissions, but many resources remain undeveloped. Accurate production forecasting is essential to increase and sustain CBM recovery. Current computational models underestimate long-term production performance, while a multi-scale CBM model can improve production rates and extend productive lifetimes.
Article Energy & Fuels

Non-Darcy thermal-hydraulic-mechanical damage model for enhancing coalbed methane extraction

Zhanglei Fan et al.

Summary: The study presents a Non-Darcy thermal-hydraulic-mechanical damage model under coupling conditions, demonstrating the significant impact of ad/desorption thermal effects on temperature fields and the importance of considering equivalent matrix scale for accurate gas production estimation. Ignoring water effects and dynamic diffusion can lead to overestimation, while the Non-Darcy factor evolution is complex and most significant during dehydration periods, reducing extraction volume by 0.04-1.7%.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2021)

Article Energy & Fuels

Experimental study of coalbed methane thermal recovery

Yuanhao Cao et al.

ENERGY SCIENCE & ENGINEERING (2020)

Article Multidisciplinary Sciences

Microcrack evolution and permeability enhancement due to thermal shocks in coal

Hongtu Zhang et al.

PLOS ONE (2020)

Article Engineering, Environmental

Clean up water blocking damage in coalbed methane reservoirs by microwave heating: Laboratory studies

Yi Lu et al.

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION (2020)

Review Chemistry, Multidisciplinary

Coal Bed Methane Enhancement Techniques: A Review

Navroop Singh Goraya et al.

CHEMISTRYSELECT (2019)

Article Energy & Fuels

Experimental study of water blocking damage on coal

Xianbo Su et al.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING (2017)

Article Energy & Fuels

Complex thermal coal-gas interactions in heat injection enhanced CBM recovery

Teng Teng et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2016)

Article Energy & Fuels

Experimental study on removing water blocking effect (WBE) from two aspects of the pore negative pressure and surfactants

Guanhua Ni et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2016)

Article Energy & Fuels

A fully coupled thermal-hydraulic-mechanical model with two-phase flow for coalbed methane extraction

Sheng Li et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2016)

Article Energy & Fuels

A model of coal-gas interaction under variable temperatures

W. C. Zhu et al.

INTERNATIONAL JOURNAL OF COAL GEOLOGY (2011)

Article Energy & Fuels

Laboratory Experiment on Coalbed-Methane Desorption Influenced by Water Injection and Temperature

D. Zhao et al.

JOURNAL OF CANADIAN PETROLEUM TECHNOLOGY (2011)

Article Energy & Fuels

Development of anisotropic permeability during coalbed methane production

Yu Wu et al.

JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING (2010)