钻探工程2024，Vol.51Issue(5)：12-23,12.DOI:10.12143/j.ztgc.2024.05.002
天然气水合物开采方法研究现状及展望
Current status and prospects on natural gas hydrate exploitation methods
摘要
Abstract
Natural gas hydrate is a type of solid clean energy with huge reserve,which is therefore considered as a substitute for traditional fossil fuels and have attracted much attention around the world.Due to its occurrence in low-temperature and high-pressure marine and permafrost environments,the key to achieving commercial exploitation is to find out economical and efficient exploitation methods.Based on the current research status of laboratory research,numerical simulation,and on-site experiments,the exploitation effects of methods such as depressurization,heat injection,chemical inhibitor injection,CO2 displacement and combination method were analyzed,and the advantages and limitations of each method were discussed.The existing exploitation methods are mainly limited by low reservoir permeability and poor thermal conductivity,and have not been able to achieve long-term continuous gas production.To address the above issues,the in-situ resistance heating method for reservoirs is proposed to improve thermal utilization efficiency,and it is believed that hydraulic fracturing and permeability enhancement technology is an effective measure to increase reservoir permeability and assist in efficient gas production through production methods such as depressurization;Regarding the potential instability of reservoirs caused by hydrate exploitation,it is believed that the use of CO2 replacement method can strengthen the reservoir,and the use of supercritical CO2 injection technology can improve the CO2 replacement rate.关键词
天然气水合物/开采方法/降压法/储层原位加热法/联合法/储层增渗Key words
natural gas hydrate/exploitation method/depressurization method/in-situ heating method/combination method/reservoir permeability enhancement分类
能源科技引用本文复制引用
刘姝,李文杰,李莉佳,罗永江,陶瑞,李晓璇,杨亚会..天然气水合物开采方法研究现状及展望[J].钻探工程,2024,51(5):12-23,12.基金项目
重庆市自然科学基金面上项目"地电焖井法强化天然气水合物开采机制研究"(编号:CSTB2022NSCQ-MSX0457) （编号:CSTB2022NSCQ-MSX0457）
重庆市教育委员会科学技术研究项目"天然气水合物储层特性与开采参数耦合作用对CO2置换速率影响机制"(编号:KJQN202301548) （编号:KJQN202301548）
