RU1803526C - Control system of underwater christmas tree - Google Patents

Abstract

Usage: control actuators placed under water. The system comprises an underwater control module with electric and hydraulic control units located on the base plate, a multi-channel hose connecting hydraulic control units to underwater actuators, a surface control panel, a drum with a drive and a hose cable connecting electric and hydraulic units to surface control panel, and the mechanism for changing and fixing the position of the multi-channel hose in space, made in the form of an additional drum. with the drive, providing which unlocks them in an emergency, while the disconnecting unit is made in the form of an electrically controlled friction clutch. 4 ill., 1 wp f-ly

Description

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The invention relates to the equipment of subsea exploration and production wells and can be used to control actuators located under water.

An object of the present invention is to increase the reliability of a system while improving performance.

In FIG. 1 images of an underwater control module before launching it from a ship at sea ..; .

Fig. 2 illustrates the lowering process of an underwater control module.

In FIG. 3 shows a section AA from FIG. 2.

In FIG. 4 shows a section BB of FIG. 2.

In FIG. 5 illustrates an underwater control module located at the bottom of the pit during the operation of the subsea well. .

In FIG. 6 shows a section BB of FIG. 5.

The control system for the underwater fountain valves (Fig. 1) comprises an underwater control module 2, which is located in the initial position on the ship 3.

Underwater control module 2 with multi-channel hose 4 connected

ABOUT

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with underwater actuators 5, which are part of the underwater gushing 1. The underwater control module 2 (Fig. 2) contains electric 6, hydraulic 7 control units located on the base plate 8, which are connected to the surface control panel 9 using umbilical cables 10 wound on a drum with a drive 11. A subsea control module may also include a hydro power station with a pump and its drive.

Hose cable 10 has hydraulic channels 12 and an electrical cable 13 for transmitting an electrical signal.

The ship 3 is equipped with a lifting device 14 for raising and lowering the underwater control module using a cable 15,

The underwater control module 2 comprises an additional drum 16 (Fig. 6) located on the supports 17, 18, connected to the drive 19, for example by means of an electrically controlled friction clutch.

In the de-energized state, the disconnecting device 20 disengages the actuator 19 from the drum 16. In this case, the drum 16 can freely rotate on the supports 17, 18. An additional drum 16, the actuator 19 are placed on the base plate 8, the base plate 8 is equipped with a locking device for the underwater module 2 at the bottom, made, for example, in the form of pointed pins 21.

For the installation of underwater fountain fittings on days of sea, a craft is used, for example, a semi-submersible platform 22 (Fig. 1), connected to the well by routes 23, 24.

Before mounting at the bottom of the sea, the underwater actuators 5 of the underwater fountain 1 are connected to the underwater control module 2, which is located on the surface, for example, on a ship 3 using a multi-channel hose 4, After that, the underwater fountain 1 is lowered wellhead with cables 23, 24.

In this case, the disconnecting device 20 is in a de-energized state. The multi-channel hose 4 is unwound from the additional drum 16. The minimum length of the multi-channel hose 4 is equal to the depth of the sea above the well. The multi-channel hose 4 is permanently connected to the hydraulic control unit 7.

The connection of the multi-channel hose 4 takes place along the axis of the drum 16. The connection point of the multi-channel hose with the drum 16 is sealed using the device 25.

Lowering of the underwater control module 2, for example, from the floating system 3, is carried out by the lifting means 14. Using the cable 15 attached to the underwater control module 2. During lowering, the multi-channel hose 4 is rewound

0 additional drum 16. In this case, the umbilical 10 is rewound by means of a drum with a drive 11.

The underwater control module 2 is lowered until the device contacts

5 for fixing the underwater control module 2, for example in the form of pointed pins 21 with a bottom Mor.

The position of the underwater control module 2 at the bottom of the sea is shown in FIG. 5.

0 In this case, the pins 21 under the influence of the weight of the underwater control module 2 enter the ground and fix the underwater control module 2 (or using a cable thrown to the surface at

0 help bu, which is not described in the proposed technical solution),

When the underwater module is lowered to the bottom, fixation devices made in the form of pointed pins interact with the bottom and fix the under-control control module at the bottom.

In the proposed technical solution, it is possible to dock electrical and hydraulic control lines and power lines to the underwater control module and inspect and repair it on the surface.

Using the lifting devices in the proposed technical solution, it is possible to lower the underwater control module to the bottom of the sea and raise it to the surface without the use of diving equipment.

When raising and lowering the underwater

0 control module multichannel rods connecting hydraulic control units with underwater actuators, using a device for changing and fixing its position is not

5 forms loops and does not overlap, since it constantly pulls,

All this increases the reliability of the control system while improving performance.

Claims (2)

Formula 1, A control system for underwater fountain valves, comprising an underwater module with electric and hydraulic control units located on a base plate, a multi-channel hose connecting hydraulic control units to underwater actuators, a surface control panel, a drum with a drive and a umbilical connecting electric and hydraulic units with surface control panel, characterized in that, for the purpose of g ///// // y / ///////// 7/77 / To increase reliability while improving operational performance, it is equipped with a mechanism for changing and fixing the position of the multi-channel hose in space, made in the form of an additional drum with a drive located on the base plate, and an opening unit installed between the drum and the drive with the possibility of their release. 2. The system according to claim 1, characterized in that the disconnecting unit is made in the form of an electrically controlled friction clutch. Phi $. 1 3-9 F7 2 zpf 9ЈШШ1 Fie. 6