As a clean and abundant unconventional natural gas resource, natural gas hydrate (NGH) holds the characteristics of safety, high efficiency and sustainable exploitation, which helps to alleviate the energy shortage of China, reduce the foreign-trade dependence of oil and gas, and ensure the national energy security. Microwave heating is a significant method that has been used in natural gas hydrate exploration. By using the microwave heating, the NGH in the reservoir formations would be heated, decomposed and stimulated thanks to taking advantage of microwave heating's unique characters: efficiency, high speed, clean and pollution-free. This paper established the temperature under microwave heating gas hydrate distribution theory model, and by using the finite element method for simulating temperature field of microwave heating gas hydrate, this paper analyzed the natural gas hydrate in the microwave field temperature distribution in the influencing factors. Microwave has a significant heating effect on the hydrate reservoir in the immediate vicinity of wellbore, and it is not affected by the initial conditions of reservoir. The temperature can rise to above 50°C within 1 h which is higher than the phase equilibrium temperature at the time of hydrate decomposition and is helpful to improve the decomposition rate of hydrate. The frequency is set at 915 MHz, and the feed port has a spiral arrangement with a length of 10 mm, which greatly expands the microwave heating range.
Declaration of competing interests
We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, and there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled "Analysis of factors affecting microwave heating of Natural gas hydrate combined with numerical simulation method".
| [1] |
G. Fan, W. Li, Global exploration and development of combustible Ice[J], China Petrol. Corp. (10) (2017) 68-70.
|
| [2] |
Y. Fu, Research status and bottleneck of commercial exploitation of combustible Ice[J], Oil Drill. Product. Technol. 40 (1) (2008) 68-80.
|
| [3] |
X. Zhang, X. Lu, P. Li, Research Review of Gas Hydrate Extraction Methods[J]. Science in China: Physics, Mechanics and Astronomy, 2018, pp. 1-22.
|
| [4] |
Z. Fu, Research on Depressurization Dissociation Behavior under Different Methane Hydrate Deposits[D], Dalian University of Technology, 2016.
|
| [5] |
Y. Du, Experimental Simulation Study on Two-Dimensional Exploitation of Natural Gas Hydrate in Porous Media[D], Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, 2008.
|
| [6] |
T.X. Hao, Application of FLUENT to Numerical Simulation of Natural Gas Hydrate Production Process[D], Jilin University, 2015.
|
| [7] |
J.S. Yang, Numerical Simulation of Gas Hydrate Dissociation in Lab-Scale Depressurization Experiment[D], National Cheng Kung University, 2016.
|
| [8] |
W.B. Wang, Numerical Simulation Research on Gas Hydrate Decompression Production[D], Qilu University of Technology, 2021.
|
| [9] |
C.Y. Chen, C.Y. You, et al., Numerical simulation of the depressurization production of natural gas hydrate reservoirs by vertical well patterns in the northern South China Sea[J], Nat. Gas. Ind. 40 (8) (2020) 177-185.
|
| [10] |
J.J. Liu, Z.L. Shao, Y.C. Zheng, Numerical simulation of the decomposition of natural gas hydrates by depressurization[J], J. Southwest Petrol. Univ.(Sci. Technol. Edition) 39 (1) (2017) 80-90.
|
| [11] |
S. Li, Simulation and Numerical Modeling Research on Depressurization and Heat Injection Exploitation of Natural Gas Hydrate[D], Harbin Engineering University, 2017.
|
| [12] |
Z.Z. Xia, Numerical Simulation Investigation and Production Method Study of Natural Gas Hydrate Reservoir Development[D], China University of Petroleum( East China), 2016.
|
| [13] |
Y.J. Huang, Numerical Study of Thermal Recovery on Class-3 Gas Hydrate Reservoir[D], National Cheng Kung University, 2017.
|
| [14] |
Y.C. Feng, L. Chen, et al., Numerical investigation on hot water injection process along fractures of methane hydrate reservoirs[J], J. Eng. Thermophys. 42 (3) (2021) 663-667.
|
| [15] |
F. Li, X. Liu, New technology of gas hydrate mining and its restricting factors of industrial mining, J. Special Reservoirs 17 (3) (2010) 1-3.
|
| [16] |
Y. Wang, Feasibility Study of Removing Gas Hydrate Plugging in Gas Transmission Pipeline by Microwave[D]. Xi 'an, Xi 'an Petroleum University, 2013. https://kns.cnki.net/KCMS/detail/detail.aspx? dbname=CMFD201402&filename=1014165866.nh.
|
| [17] |
W. Luo, X. Lan, Y. Song, Research progress of microwave heating technology and its pyrolysis oil shale[J], Mater. Bull. 28 (21) (2014) 109-114.
|
| [18] |
G. Li, Y. Meng, Z. Dong, et al., Mechanism and significance of micro-fractures generated by microwave heating in sandstone reservoirs, J. (1) (2007) 93-97.
|
| [19] |
J. Zhang, F. Guan, Feasibility Analysis of Gas hydrate extraction using CO2 replacement combined with thermal mining[J], Energy Chem. Eng. 39 (2) (2012) 71-75.
|
| [20] |
S.H. Khan, A.K. Misra, C.B. Majumder, A. Arora, Hydrate dissociation using microwaves, radio frequency, ultrasonic radiation, and plasma techniques, CB (Curr. Biol.) 7 (2020) 130-146, https://doi.org/10.1002/cben.202000004.
|
| [21] |
B. Wang, H. Dong, Z. Fan, et al., Numerical analysis of microwave stimulation for enhancing energy recovery from depressurized methane hydrate sediments[ J], Appl. Energy 262 (2020) 114559.
|
| [22] |
J. Zhao, Fan, et al., Simulation of Microwave Stimulation for the Production of Gas from Methane Hydrate sediment[J], APPLIED ENERGY -BARKING THEN OXFORD-, 2016.
|
| [23] |
S. He, D.Q. Liang, D.L. Li, et al., The Formation of Natural Gas Hydrate from SDS-Solutions and Decomposition by Microwave Heating in a Static Reactor[J], Petroleum Science and Technology, 2013.
|
| [24] |
Q. Mou, X. Li, B. Zhang, Determination of microwave heating thickness of porous media[J], Drying Technology and Equipment (4) (2005) 184-186.
|
| [25] |
M. Huang, J. Peng, J. Wang, et al., Theoretical Research on the heating mechanism of microwave and material interaction[J], J. Kunming Univ. Sci. Technol. (Sci. Technol.) (6) (2005) 15-17.
|
| [26] |
J. Li, Research on Hot Spot and Thermal Uniformity Control and Optimization in Micro-wave Heating Process[D], Chongqing University, 2016. https://kns.cnki.net/KCMS/detail/detail.aspx?dbname=CDFDLAST2017&filename=1017801848.nh.
|
| [27] |
S.D. Li, Y.M. Sun, W.C. Chen, et al., Analyses OF gas production methods and offshore production tests OF natural gas hydrates [j], J. Eng. Geol. 27 (1) (2019) 58-71.
|
PDF
