Dalian University of Technology

Bingbing Chen

Yongchen Song

Lei Yang

Mingjun Yang

Zheng Ling

Yanghui Li

Lunxiang Zhang

Peng Wu

Yu Liu

Yi Zhang

Zhi Cui

Zhan Huang

Lanlan Jiang

Cong Chen

Fan Wang

Chuanxiao Cheng

Yuan Lv

Tao Yu

Dawei Guan

An experimental apparatus for studying an interfacial shear characteristic between a hydrate-bearing sediment and a structure includes a triaxial shear pressure cell, a torsional and axial loading device, a methane gas source, an upper computer, a first pressure-volume controller, a water bath device, a second pressure-volume controller, an oil tank, a back pressure valve, a gas-water separator, a gas flowmeter, and a data acquisition system, where the triaxial shear pressure cell includes an upper pressing plate, an upper fixed disc, a loading rod, a pressure chamber upper cover, a high-pressure sealing cover, a lower rotating base disc, a thermal insulation plate, a lower pressing plate, a top cap, and a base. The experimental apparatus can achieve in-situ artificial hydrate formation for the study. The multi-directional load control-based shear method supports interfacial shear experiments under a complex stress path, providing hardware support for studying the interfacial shear mechanical characteristic.

Experimental apparatus and method for interfacial shear characteristic between hydrate-bearing sediment and structure

A cold storage system and method are provided. The cold storage system includes a chiller, a hydrate-based cold storage tank, a gas disturbance generator, a concentration detector, a heat exchanger, a direct-current power supply and circuit controller, and a system monitor. Chiller provides a secondary refrigerant at a low temperature. The secondary refrigerant flows through a coil in the hydrate-based cold storage tank for a heat exchange. The gas disturbance generator induces hydrate nucleation. The concentration detector monitors a concentration of a hydrate solution in real time. The heat exchanger is equipped with a finned tube heat exchanger with a fan, to improve the cold supply efficiency of the cold storage system. The system monitor monitors a state change of the system in real time through a set of temperature-pressure sensor modules. Several cold energy supply modes can be realized in the present disclosure by adjusting opening/dosing of valves.

Internal circulation type clathrate hydrate-based cold storage system and method

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.

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

The present disclosure relates to the field of COgeological sequestration, and provides a whole-process multi-parameter monitoring device and method for simulating COgeological sequestration and use thereof. A large-scale reactor body is developed, and a geological reservoir at a depth of 800 to 3000 meters is simulated. A modular built-in model device is researched and developed, a multi-type and variable-structure reservoir remodeling technology is developed, and mutual coupling of modules can be achieved. The design idea of separating the pressure reactor from the built-in sample model is adopted in the device. The confining pressure, the pore pressure, the temperature gradient, and the axial load of the device can be independently controlled through a temperature control mechanism and a loading mechanism respectively, so that the restoration of the state of in-situ stresses in the reservoir is realized.

Whole-process multi-parameter monitoring device and method for simulating COgeological sequestration and use thereof

Growing community of inventors

Liaoning, China

Bingbing Chen