Patent ID: 10301894

Abstract:
An experimental device of polyphase separation of natural gas hydrate drilling fluid, and method of use thereof, comprising a solid-phase separator, a liquid injection module, a gas injection module and a gas-liquid separator. The solid-phase separator comprises a first filter device and a second filter device, the gas injection module injects gas into the solid-phase separator while the liquid injection module injects liquid into the solid-phase separator, and the gas-liquid separator is communicated with the solid-phase separator through a pressure control valve. In the experimental device and method, the combination of the liquid and the gas injection modules keeps the solid-phase separator in a high-pressure state of the gas-liquid mixture constantly to achieve the polyphase separation of natural gas hydrate drilling fluid under a high pressure, while avoiding the formation of new hydrates during separation; the provision of the dual-filter device in the solid-phase separator aids in preventing equipment blockages.