DEVICE FOR COMPENSATION OF LOADS ON SYSTEM OF UNDERWATER COLUMN HEADS Russian patent published in 2021 - IPC E21B33/43 

FIELD: subsea hydrocarbon production.

SUBSTANCE: invention relates to the field of subsea hydrocarbon production, in particular, to a device for compensating loads on a system of subsea casing heads, including a conductor string and a direction string. The proposed device for compensating the loads on the system of subsea casing heads, including the conductor string and the direction string, contains: a caisson; a cover defining an annular cavity from above, formed by the outer and inner annular walls, and made integrally with the caisson; a mechanism for fixing the caisson relative to the system of subsea casing heads, containing the first fixing means made with the possibility of fixing relative to the conductor string, and second fixing means adapted to be fixable relative to the direction string; linear movement means; a pump connected to the annular cavity of the caisson, a shut-off valve configured to operate to turn off the pump; and a caisson position sensor configured to be installed in the caisson fixing mechanism and capable of transmitting a signal for triggering a shut-off valve.

EFFECT: invention increases the reliability, durability and safety of operation of the system of subsea casing heads due to effective compensation of loads on the system of subsea casing heads.

5 cl, 3 dwg