SYSTEM OF PIPELINE CONNECTION OF SURFACE X-MAS TREE FITTINGS Russian patent published in 2021 - IPC E21B43/12 F15B1/02 

FIELD: mining.

SUBSTANCE: disclosed is system of pipeline connection of surface X-mas tree comprising the production line intended for supply of producing fluid from well, as well as a salt solution and a solution for flushing the well from the platform, a killing line intended for supply of the killing solution, a discharge line intended for supplying the formation fluid to the separation station or a flare mast, chemical injection line intended for supply of chemical reagents from platform, wherein said system includes installed on the wellhead block valve, comprising integrated in a single block valve body: above-water main gate valve, surface buffer gate valve, killing line damper, discharge line gate valve, chemical reagent spray valve, wherein above ground water gate valve and above-water buffer valve are located on field well of access system into well, each of above-water main gate valve and above-water buffer gate valve is equipped with means of locking in open position, and each of damper of damping line, gate valve of discharge line and valve of chemical agents injection is equipped with emergency shutdown automatic devices, wherein the discharge line gate valve is additionally equipped with means of retarding closure of the gate valve of the discharge line to prevent a hydraulic impact when the flow of formation fluid stops when closing said gate valve.

EFFECT: technical result is decreased dimensions.

5 cl, 2 dwg