O-RING Russian patent published in 2024 - IPC F16J15/12 E21B33/00 

FIELD: sealing.

SUBSTANCE: invention is intended for sealing the annular space when connecting the insulating sleeve of the underwater Xmas tree (hereinafter referred to as the UXT) of gas-condensate production wells with the casing string suspended in the casing head. The product is installed on the seat of the UXT insulating sleeve. The sealing ring contains two metal end support rings with recesses and an elastomeric sealing element between them; outer and inner protrusions are made in the central part of the elastomeric sealing element. The outer protrusion has a platform of width F and height D, which passes through inclined sections into the side parts of the elastomeric sealing element located in metal end support rings. The inner protrusion has a platform of width H and height E, which passes through inclined sections into the side parts of the elastomeric sealing element located in metal end support rings. Moreover, the transition angle G of inclined sections is equal to G = 28-33°, and the ratio of the width to the height of the outer protrusion platform is F/D = 4.6-6.8, the ratio of the width to the height of the inner protrusion platform is H/E = 8.9-18.2.

EFFECT: invention makes it possible to ensure reliable fastening of the sealing ring, increase the tightness of the seal, and also prevent the ring from losing its sealing functions when installed on a seat, for example, on an insulating sleeve of an underwater Xmas tree.

4 cl, 6 dwg