Review on the Test Methods and Devices for Mechanical Properties of Hydrate-Bearing Sediments

Commercial exploitation of marine natural gas hydrate (NGH) is crucial for energy decarbonization. However, production would weaken reservoir mechanical properties and trigger geohazards. Experimental instruments are the basis to obtain responses hydrate-bearing sediments (HBS). Considering deformation processes from elastic residual during exploitation, this study comprehensively reviewed feasibility research progress bender element, resonance column, atomic force microscope, triaxial shear, direct ring static penetration in testing. Each test method’s precision sample size were compared analyzed. Finally, limitations challenges current testing methods HBS discussed, their future development directions proposed. The proposed direction expected provide insightful guidance improve understanding behavior HBS.