DEVICE FOR INTEGRATED MINING OF GAS-HYDRATE POOLS Russian patent published in 1995 - IPC

FIELD: mining. SUBSTANCE: device for integrated mining of gas-hydrate pools has outer and auxiliary inner output strings and inner central tubing. Tubing is communicated with collector made in lower end with receiving ports and thickened wall upper part and installed in interval of casing which has shoe and adapter with channel in projection. Collector and casing are installed to form annular chamber communicated through channel made in wall thickening with auxiliary string and part of projection channels. Discharge channels of collector are also made in thickened walls and communicated with other part of projection channels and output string. Nozzle is installed tangentially to surface of collector in which additionally accommodated are heat absorbers in form of perforated plates. EFFECT: higher efficiency. 2 cl, 3 dwg