CHRISTMAS TREE CONTROL CABINET Russian patent published in 2020 - IPC E21B34/16 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to oil and gas industry and can be used in development of devices for automatic control of technological processes of operation of wells of deposit of hydrocarbon material, mainly gas or gas condensate. Disclosed is a Christmas tree control cabinet of production of two wells, comprising a cabinet from sheet metal, in which hydraulic system is installed to control Christmas trees and underground shutoff valves of each well. Housing of control cabinet is divided into control compartment with operator panel and compartment for arrangement of main hydraulic equipment. Inside the above cabinet there is a hydraulic system for control of Christmas trees and underground shutoff valves of each well, comprising devices instrumentation and automated control systems, actuators, pilot distributors of low and high pressure with drive and with cavities of inlet, outlet and drain, installed both along control line of root and side gates, and along control line of underground shutoff valves, wherein hydraulic system comprises pressure accumulators connected to hydraulic fluid tank, pumps, pressure regulators, multipliers and pipelines for supply of hydraulic fluid to actuators of side and over ground gate valves, underground shutoff valves. At that, hydraulic equipment of each line of hydraulic fluid pressure control in actuators of gate valves, underground shutoff valves contains, mainly, reducing valve, safety valve, shutoff needle valves of main lines and drainage, check valves are mounted on one hydraulic plate by means of butt and (or) cartridge mounting. In the plate there are corresponding internal channels for supply, removal of hydraulic fluid and drainage, as well as line for connection of instrumentation. Low-pressure pilot distributors included in the logic circuit of the well control and monitoring well shutdown during melting of the fusible inserts with increase or decrease of pressure in the high and low pressure control valves circuit, as well as low-pressure pilot distributors, which determine the sequence of opening and manual process or emergency shutdown of actuators of gate valves and underground cutoff valve, are combined into one block of low pressure distributors. In the above unit the distributors are mounted on one hydraulic plate by means of butt assembly. At that, in the plate there are corresponding internal channels for supply, removal of hydraulic fluid and drainage, as well as the instrumentation connection line, and main control valves and temperature safety valves of control lines of actuators of valves and underground cutoff valve are combined into one unit of high pressure distributors. In said high-pressure distributor unit, control valves and safety temperature valves are mounted on one hydraulic plate by means of butt-joint mounting, wherein appropriate inner channels for supply and discharge of hydraulic fluid and drain as well as instrumentation connection line are made in said plate.

EFFECT: due to the possibility of outputting information on the condition of the Christmas tree equipment and the control cabinet of the station to the operator panel, performing the assembly of the elements of the control systems by the tiles, the Christmas tree control in interactive mode, higher reliability of the cabinet as a whole and simplification of its design.

3 cl, 10 dwg