RESOURCE SELECTION SYSTEM Russian patent published in 2023 - IPC E21B43/00 

FIELD: gas production.

SUBSTANCE: invention relates to the means for extracting gas hydrate from the seabed. The technical result is to increase the efficiency of gas extraction from the near-bottom gas hydrate layer in the seabed by creating a resource extraction system with smaller dimensions, which can operate stably continuously for a long time, providing a more efficient supply of the necessary energy. In particular, a system is claimed for extracting a resource from a gas hydrate layer on the seabed, comprising: a resource extraction pipe for sending resources selected from the bottom layer to a storage tank for the selected resource; a protective tube provided around the resource extraction tube and protecting the tube thereof; and at least one coiled tubing device that extends from a rotating drum located on the water surface or inside the protective tube, and which extends from the inside to the outside through the side wall of the protective tube. Moreover, the coiled tubing device comprises an outer wall of a cylindrical pipe, a hole created in the outer wall of the pipe, and a mixing chamber created from the inside of the hole. At the same time, the resource selection system is configured to crush the bottom layer by supplying liquid concentrates of foaming material, fuel gas and oxygen-containing air to the bottom layer through the coiled tubing device, or supplying liquid concentrates of foaming material, fuel gas generating material and air to bottom layer through the coiled tubing device and generate fuel gas by chemical reaction of the fuel gas generating material and water at high pressure exceeding the supercritical pressure of 22.1 MPa, or by promoting the decomposition of the bottom layer by the fuel gas generating material, mixing the liquid concentrates of the foaming material with each other another to ensure foaming of liquid concentrates in an atmosphere containing fuel gas and air, and explosive combustion of fuel gas accumulating in the cavities of the foaming material.

EFFECT: increasing the efficiency of gas extraction from the near-bottom gas hydrate layer in the seabed by creating a resource extraction system with smaller dimensions, which can operate stably continuously for a long time, providing a more efficient supply of the necessary energy.

11 cl, 30 dwg