02. riserless light well intervention system

8/11/2019 02. Riserless Light Well Intervention System

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FMCs Riserless Light Well Intervention (RLWI) system is designed to perform alltypes of wireline jobs using braided wire or slick line.It enables operations of tool strings with variable length, and is designed with no

circulation of well fluids to the intervention vessel.The system is flexible and can perform operations on all Subsea Treeconfigurations for production and injection wells. The system has provision for

well kill and is designed to operate efficiently and competitively versus rig basedoperations.

Riserless Light Well Intervention System

Platform Monitoringsystems

FPSO Monitoringsystems

Riser Monitoringsystems

Subsea Inspectionsystems

EnvironmentalMonitoring

Subsea ProcessingSystem Sensors

Optical Fibre

Communications

MooringMonitoring

PipelineMonitoring

SeabedSeismic


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RLWI - System Overview

MCs Riserless Light Well Intervention (RLWI) system offers safe andst effective intervention operations on existing subsea wells resultingincreased or accelerated production volumes. The RLWI system can beployed from smaller vessels and is easily transportable across fields.

iserless Light Well Intervention System

ystem Description

ucing the cost of offshore intervention operations isprincipal driving force behind the development of

RLWI technology. FMCs RLWI System enables costective intervention operations into existing subseals, resulting in additional production volumes from

ture subsea fields at highly competitive costs for theremental volumes of oil. It is currently available in

16 10k configuration and includes Upper andwer Lubricator Packages, together with a Well

ntrol Package (WCP) and adapters to suit mostsea tree types.

Patented LubricatorSystem

FMCs RLWI technology includes a

patented Lubricator System for insertingdownhole tool packages into the wellbore

under full pressure without takinghydrocarbons back to the vessel or to the

environment. The technology enablesintegrated operations, increases safety by

reducing personnel exposure, as well as

reducing cost.


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RLWI System Data

Design water depth: 3,000 m / 10,000 ft

Operating water depth: 1,000 m / 3,300 ft (due to umbilical length) Design pressure: 690 bar / 10,000 psi

Bore diameter: 7 1/16 / 179.4 mm

Total weight (air): 69 ton

Total height: 33 m / 108 ft Maximum toolstring length: 22 m / 72 ft Compatible with horizontal and conventional Trees, of all makes

All types of wireline operations


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Pressure Control Head (PCH)

Functions:

Dynamic grease seal around the moving wireline

Two off static mechanical rubber element seals (UpperStuffing Box and Dual Stuffing Box) around the static wire

(Safe Mode, activated by Wireline Operator) DSB has additional grease injection

Two off MEG injection points for hydrate prevention Tool catcher to prevent tool drop down

Lower Lubricator Package (LLP)

Functions:

Connection point for WCP

Safety Joint to prevent overload of wellhead and tree Carrier for controls equipment

Upper Lubricator Package (ULP)

Functions:

Connection point for PCH Wireline cutting valve acts as secondary barrier element

(This valve is normally not used in wireline operation)

Circulation outlet

Well Control Package (WCP)

Functions:

Main well barrier Shear/Seal Ram cuts wireline, coiled tubing and wireline

tool string Enables flushing of hydrocarbons back into well

Provides hydraulic pressure and supply, as well ascommunication with Subsea Tree functions

Lubricator Tubular (LUB TUB)

Functions:

Pressure lock for wireline tool

Carrier for grease system for PCH

Topside Equipment

ROV type Umbilical Reel ROV type Umbilical

Umbilical Clamp

Chemical Injection Unit (CIU)

ROV type Umbilical Reel ROV type Umbilical Umbilical Clamp

CIU


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02. riserless light well intervention system

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