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SHELL EA maintenance Project

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Swivel & legs Replacement

Location : Nigeria, AFRICA
Filed Name: Shell EA
Support : FPSO Sea Eagle
Date : 2019

Petrolis has been contracted by SBM offshore to perform Swivels & Legs Replacement on Shell FPSO Sea Eagle. The 3 Month operation has been now been successfully and safely completed.


Swivels & Legs Replacement:
Replacement of portside swivel bearing portside. Installation of frame to secure swivel bearing when disconnected.
Assist setup of diamond cutter for cutting of swivel shaft.
Removal of Swivel Bearing.
Preparation and installation of bushes for shaft.
Installation of Swivel Bearing.
Torqueing of Swivel Bearing to main post.
Demob of all Project equipment.


The Shell EA Field development is located in the South-East corner of Nigerian block OML 79, some 15 km southwest of the mouth of the Dodo River and about 90 km southeast of Warri
Sea Eagle FPSO, a Floating Production, Storage and Offloading unit, is permanently moored with a soft yoke mooring system which allow the FPSO to weathervane around a fixed piled structure.
The soft yoke accommodates the full vessel motions using a number of articulations. A water filled ballast tank provides the restoring force in the system to maintain the FPSO in equilibrium position. Recently, Portside leg swivel bearing has begun to degrade, requiring the need of an emergency repair, consisting in replacing entire Portside leg by Double Chain leg Interim solution, as previously done on Starboard leg in 2010

Berge Helene

Location: Mauritania, AFRICA
Type of personnel: RAT
Support: FPSO Vessel
Date: 2016-2018

  •  Scope of work Decommissioning Disconnection, laydown and wet storage of flexible risers, umbilical and mooring lines from the FPSO
  •  Description of the project Located in North West Africa, Chinguetti is one of the three mains gas discovery with Tiof and Banda in 2001. The Chinguetti field lies off the coast of the Islamic Republic of Mauritania, Northwest Africa, in Block 4, PSC (Production Sharing Contract) area B, about 80km west of the Mauritanian coastline. It was operated by Woodside Mauritania on behalf of AGIP/Eni, Hardman Petroleum, Fusion Oil and Gas, Premier Oil and Roc Oil. The development works under a PSC with the Mauritanian Government. Operated by Woodside until December 2007, the Chinguetti field is now owned and operated by Petronas Australia Pty


    Location: Abu Dhabi
    Type of personnel: Rigger, Rigger Foreman, Banksman, Crane Operator
    Support: Barge: Asian Hercules III
    Date: 2017


      General deck work and preparations for lifting and installing of three jackets - GTP, SP and AP in NASR field

    General Deck:
    Daily operation meetings
    Tool Box Talks
    Installing of boat landings
    Installing of Yokohama’s (Fenders)
    Installing of gangway’s
    Mooring operations of HTV and Spacer Barge
    Spooling winch operations for Gravity anchors of floating lines
    Assist in deploying of Wave-riding buoy
    Connecting and winch operations for all steering lines
    Capture and supply rigging equipment to all AHT’s and HTV’s vessels
    Launching of work boat for crew transfers and during lifting operations
    Connecting of slings to Jib and A-frame hooks for lift of Jackets
    Installing of recovery buoys on lifting slings
    Forklift operations on quayside and AH III deck before departure to NASR field
    Crane operations in port and in field


      The Nasr Phase II Full Field Development Project, aimed at increasing the field’s oil production capacity to 65,000 barrels per day (bpd) from the existing capacity of 22,000bpd, is underway and is expected to conclude in the first half of 2019.
      The Nasr field development forms part of Adma-Opco’s overall plan to fast track the development of its new fields including Satah Al Razboot (SARB) and Umm Lulu, and increase the company’s production capacity by an additional 270,000bpd.
      The Nasr Phase II Full Field Development Project is being implemented under three separate engineering, procurement and construction (EPC) packages.

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