The status of exploitation techniques of natural gas hydrate

论文摘要

Natural gas hydrate（NGH） has been widely considered as an alternative form of energy with huge potential,due to its tremendous reserves, cleanness and high energy density. Several countries involving Japan,Canada, India and China have launched national projects on the exploration and exploitation of gas hydrate resources. At the beginning of this century, an early trial production of hydrate resources was carried out in Mallik permafrost region, Canada. Japan has conducted the first field test from marine hydrates in 2013,followed by another trial in 2017. China also made its first trial production from marine hydrate sediments in 2017. Yet the low production efficiency, ice/hydrate regeneration, and sand problems are still commonly encountered; the worldwide progress is far before commercialization. Up to now, many gas production techniques have been proposed, and a few of them have been adopted in the field production tests. Nevertheless, hardly any method appears really promising; each of them shows limitations at certain conditions.Therefore, further efforts should be made on the economic efficiency as well as sustainability and environmental impacts. In this paper, the investigations on NGH exploitation techniques are comprehensively reviewed, involving depressurization, thermal stimulation, chemical inhibitor injection, CO2–CH4 exchange, their combinations, and some novel techniques. The behavior of each method and its further potential in the field test are discussed. The advantages and limitations of laboratory studies are also analyzed.The work could give some guidance in the future formulation of exploitation scheme and evaluation of gas production behavior from hydrate reservoirs.

论文目录

• 1. Introduction
• 2. Natural Gas Hydrate Resources
•   2.1. Structure of gas hydrate
•   2.2. Classification of gas hydrate reservoirs
•   2.3. Distribution of gas hydrate resources
• 3. Apparatus and Simulator
• 4. Exploitation Technologies
•   4.1. Depressurization method
•     4.1.1. Laboratory experiments
•     4.1.2. Numerical simulation
•   4.2. Thermal stimulation method
•     4.2.1. Thermal properties
•     4.2.2. Laboratory experiments
•     4.2.3. Numerical simulation
•   4.3. Chemical inhibitor injection method
•     4.3.1. Properties of inhibitors
•     4.3.2. Laboratory studies
•   4.4. CO2–CH4exchange method
•     4.4.1. Motivations and challenges
•     4.4.2. Laboratory studies
•   4.5. Combination method
•   4.6. Other methods
• 5. Conclusions

文章来源

类型: 期刊论文

作者: Lei Yang,Yulong Liu,Hanquan Zhang,Bo Xiao,Xianwei Guo,Rupeng Wei,Lei Xu,Lingjie Sun,Bin Yu,Shudong Leng,Yanghui Li

来源: Chinese Journal of Chemical Engineering 2019年09期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 石油天然气工业

单位: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology,Guangzhou Marine Geological Survey,China Ship Design & Research Center Co., Ltd.

基金: Supported by the National Natural Science Foundation of China(51622603,51806027 and 51890911),the Major Program of National Natural Science Foundation of China(51436003),the National Key R&D Program of China(2017YFC0307300,2016YFC0304001)

分类号: TE37

页码: 2133-2147

总页数: 15

文件大小: 4740K

下载量: 23