WELL GATE Russian patent published in 2025 - IPC F42D1/08 F42D1/18 

FIELD: drilling and blasting operations.

SUBSTANCE: invention relates to drilling and blasting operations, specifically to locking of gaseous explosion products in a charging cavity, and can be used in explosive destruction of rocks by borehole charges. Well gate includes an external sleeve made of material with surface density of not less than 4 g/m², inside of which there is an inner gas-tight sealed flexible chamber, to the inner wall of which an aerosol can with a drive is attached to release gas into the inner chamber. Between the outer sleeve and the inner chamber there is an outer chamber, inside which there is an inner chamber. Outer chamber is made of material with surface density of at least 50 g/m² and thickness of at least 45 mcm. Outer chamber is made of woven reinforced material. An element for its lowering into the well is attached to the external sleeve. Cross-sectional area of outer sleeve is less than cross-sectional area of inner chamber.

EFFECT: improving reliability and convenience of well gate operation.

6 cl, 1 dwg