岩土工程学报2025，Vol.47Issue(8)：1741-1756,16.DOI:10.11779/CJGE20231269
琼东南海域水合物绿色高效安全开采的新思路
Green,efficient and safe extraction methods of methane-hydrate in Qiongdongnan seabed,China
摘要
Abstract
The green,efficient and safe extraction of natural gas hydrates from the Qiongdongnan seabed,China will play an important role in achieving the China's energy strategy and the goals of carbon peaking and carbon neutrality.However,the traditional depressurization,thermal stimulation and CO2 replacement methods will face significant challenges when applied to methane-hydrate(MH)bearing clayey silt and silty clay in the Qiongdongnan basin,China.The current research status at home and abroad in recent years is summarized from three aspects:(1)the macroscopic and microscopic mechanical behaviors of hydrates bearing sediments and their relationships under complex multi-field and multi-process conditions together with phase-changes of hydrates;(2)the theoretical and multi-scale numerical analysis methods of simulating the multi-field,multi-phase,multi-process coupling effects in the MH reservoir at all the stages of deep sea energy geotechnical engineering;(3)The green,efficient and safe MH exploitation methods and adaptability evaluation.The existing problems and limitations are explored.It is necessary to employ a new approach combining the depressurization,thermal stimulation,CO2 replacement/injection and other measures to increase gas production,carbon sequestration and engineering safety to realize the green,efficient,and all-stages safe exploitation of MH in the Qiongdongnan seabed,China.关键词
能源土/本构模型/多场耦合/水合物开采/二氧化碳封存Key words
energy soil/constitutive model/multi-field coupling/hydrate exploitation/carbon dioxide sequestration分类
建筑与水利引用本文复制引用
蒋明镜..琼东南海域水合物绿色高效安全开采的新思路[J].岩土工程学报,2025,47(8):1741-1756,16.基金项目
国家自然科学基金项目(51890911,52331010) （51890911,52331010）
海南省重点研发计划项目(ZDYF2021SHFZ264)This work was supported by the National Natural Science Foundation of China Project(Grant Nos.51890911,52331010)and Key Resecnch and Development Program Projects in Hainan Province(Grant No.ZDYF2021SHFZ264). （ZDYF2021SHFZ264）
