Experimental apparatus and method for planar interfacial shear of hydrate-bearing sediment

US12392761B1 · kind B1 · utility

Assignee

• Dalian University of Technology · CN

Inventors

• Yongchen SONG · 东风镇, CN
• Yanghui Li · 东风镇, CN
• Peng Wu · 东风镇, CN
• Zhan Huang · Dalian, CN
• Mingjun Yang · 东风镇, CN
• Lei Yang · Shanghai, CN
• Zheng Ling · 东风镇, CN
• Lunxiang Zhang · 东风镇, CN
• Bingbing Chen · Nanjing, CN
• Zhi Cui · Dalian, CN

Key dates

• Filing date: Apr 30, 2025
• Grant date: Aug 19, 2025
• Expiry date: Apr 30, 2045

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A90/30
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An experimental apparatus for planar interfacial shear of a hydrate-bearing sediment includes a planar interfacial shear box, a torsional and axial loading device, a nitrogen gas source, a methane gas source, a pressure-volume controller, a water bath device, a back pressure valve, a gas-water separator, a gas flowmeter, and a data acquisition system. The planar interfacial shear box includes an upper pressing plate, an upper adapter, an upper thermal insulation plate, a ram adapter, a lower ram, an upper base, a lower base, a lower thermal insulation plate, a lower adapter, and a lower pressing plate that are coaxially connected in sequence from top to bottom. The experimental apparatus offers a simple specimen preparation method, enabling in-situ formation of a hydrate-bearing sediment in the shear box. The experimental apparatus ensures uniform stress distribution during shearing, and can acquire the interfacial shear mechanical characteristic between the hydrate-bearing sediment and a structure.