EXTRACTION METHOD OF NATURAL GAS FROM GAS HYDRATES AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2015 - IPC E21B43/24 

FIELD: oil and gas industry.

SUBSTANCE: as per the method, an oxidiser and fuel is supplied to a gas generator. Fuel is burnt in the gas generator so that there obtained is a flow of hot gases containing carbon dioxide and acting on gas hydrate so that displaced gas is obtained. Displaced gas is collected on the surface. Gas hydrate is dispersed. In order to obtain the flow of hot gases containing carbon dioxide, a system of gas generators is used. This system includes at least one pair of gas generators oriented anti-symmetrically relative to each other so that flows of hot gases leaving them in opposite directions and acting on the gas hydrate simultaneously bring into rotational movement a turbine with a gas hydrate dispersion device installed on the shaft common to it. There is a fan blade device. Its rotation is provided by transportation of displaced gas directed in an upward direction and non-decomposed dispersed gas hydrate. They are subject during transportation to decomposition so that an additional amount of displaced gas is formed.

EFFECT: improving efficiency of gas extraction due to reduction of power, material and financial costs for implementation of a technological process and minimisation of commercial product losses.

12 cl, 1 dwg