Chinese Academy of Sciences

Xuebing Zhou

Deqing Liang

Zhen Long

Xiang Li

Yong He

Dongliang Li

Jingsheng Lu

Xiaodong Shen

Fuqin Lu

A nitrogen-carbon dioxide mixed gas jet apparatus for a horizontal well and an exploitation method is presented. The jet apparatus includes: an offshore platform, a natural gas processing unit, and a pressurizing unit, wherein a portion of the gas exploitation pipe in the hydrate layer is provided with a gas injection horizontal well; a mixed gas jet unit and a nozzle assembly are disposed in the gas injection horizontal well; the mixed gas jet unit is configured to mix nitrogen and carbon dioxide, and then inject the mixed gas into a hydrate deposition layer through the nozzle assembly, so that the mixed gas replaces methane gas in the hydrate deposition layer; the portion of the gas exploitation pipe in the hydrate layer is provided with a gas exploitation horizontal well configured to collect the methane gas and convey the methane gas to the natural gas processing unit.

Nitrogen-carbon dioxide mixed gas jetting apparatus for horizontal well and exploitation method

A device and a method for continuous COcapture by a double-bed hydrate process are provided. The device includes a first fixed-bed hydrate reactor, a second fixed-bed hydrate reactor, a solution circulation system, a gas inlet system and an exhaust system; the first fixed-bed hydrate reactor and the second fixed-bed hydrate reactor are respectively connected in series with the gas inlet system, the exhaust system and the solution circulation system, and are connected in parallel; the refrigerant fluid and the heat medium fluid output by a compression-refrigeration system alternately flow into a heat exchange coil of the first fixed-bed hydrate reactor and a heat exchange coil of the second fixed-bed hydrate reactor, and the two fixed-bed hydrate reactors are alternately subjected to hydrate formation and decomposition reactions to realize continuous COcapture and separation.

Device and method for continuous COcapture by double-bed hydrate process

An apparatus for growing hydrate crystals includes a high-pressure-resistant crystallization vessel, a temperature control system, a pressure control system, a data collection system, and a mobile shelf. The apparatus can realize a variety of experimental methods such as the bubble method, the droplet method and the solution growth method by changing the experimental fitting in the high-pressure-resistant crystallization vessel, and thereby-improve the versatility of the device.

Apparatus for growing hydrate crystals

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Guangzhou, China

Xuebing Zhou