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Prelude Floating LNG Terminal


Probably the most exciting project in the world of Oil & Gas. The platform will be the largest ship ever built

Design, Conceptual Studies & FEED

  1. Sk305 Block Oil And Gas Fields
    • Indonesia
    • PCPP / MMC Oil & Gas Engineering SDN. BHD.
    • D1 Cluster Development
    • Wellhead Support Frames (WHSF)
    • ICON Engineering was contracted by PCPP via MMC O&G to provide conceptual engineering and detailed structural design of two wellhead support frames (WHSF) at D30 and DANA fields that are part of the D1 cluster fields being developed by PCPP.
    • PCPP Joint Operating Company consists of Petronas Carigali, Pertamina and Petrovietnam and is undertaking the development of D1 cluster fields comprising of D30, Dana, Danau and Darma located offshore Sarawak, Malaysia.
  2. Cliff Head Oil Field
    • Australia
    • Roc Oil Ltd
    • Cliff Head Project Platform Installation
    • ICON Engineering was commissioned to install, hookup and commission the wellhead platform and topsides by Roc Oil for the Cliff Head project in Australia. The jacket and topsides were fabricated in Malaysia and transported to site on a dedicated barge. The jacket was loaded out and transported vertically.
    • ICON was responsible for seafastening design, naval architecture and preparation of the tow plan.
  3. Woollybutt Oil Field
    • Australia
    • ENI
    • Woolybutt Field Development
    • Scalybutt – 1 Tieback Project
    • ENI contracted ICON Engineering to undertake the fast track Project Management and Design Engineering for the Scalybutt Tie back Project.
    • A subsea manifold was also designed and installed adjacent to the WB2A well to facilitate commingling of the product and to distribute the lift gas.
  4. PM-3 CAA Oil And Gas Fields
    • Malaysia
    • Talisman
    • BR-A Annexe
    • Braced Monopods
    • ICON Engineering provided the conceptual design & installation engineering, followed by the structural & geotechnical detailed design for the BR-A Annexe Monopods for Talisman Malaysia. The Annexe is braced back to the existing BR-A CPP.
    • By using the braced suction pile monopod concept, the design and installation was simplified and the cost was significantly lower than installing an adjacent stand alone structure.
  5. Wandoo Oil Field
    • Australia
    • Vermilion Energy
    • Wandoo B Wellbay Extension
    • Design and installation 2008
    • ICON Engineering reviewed the feasibility of a platform extension with tensioned conductors to provide another three conductor slots on the Wandoo B platform for Vermilion Energy. The module extension was designed to be installed in pieces limited by the platform crane capacity of approximately 8 tonnes at that radius.
  6. PM-3 CAA Oil And Gas Fields
    • Malaysia
    • Talisman
    • Bunga Kekwa C Annexe Platform
    • Conceptual Design and Installation
    • ICON Engineering undertook a conceptual review and recommended an annexe monopod platform braced back to the existing BKC wellhead platform as the most cost effective solution for Talisman to add new wells on the BKC platform. The design concept was able to be installed by drilling rig or derrick barge.
  7. Oyong Oil And Gas Field
    • Indonesia
    • Santos (Sampang) Ltd
    • Oyong Field Development - Tall Template Structure
    • ICON Engineering was contracted by Santos to provide conceptual engineering, multi-discipline detailed design and installation engineering for the Oyong wellhead platform in Indonesia.
    • ICON developed a Tall Template Structure (TTS) and Short Template Structure (STS) for the jacket and topsides respectively.
  8. Maleo Gas Field
    • Indonesia
    • Santos
    • Maleo Field Development
    • Minimal Wellhead Structure
    • ICON Engineering carried out conceptual engineering, multi-discipline detailed design and installation engineering for the Maleo wellhead platform for Santos in Indonesia. The platform is braced to a converted MODU production facility. As with the previous Oyong project ICON developed a TTS and STS for the jacket and topsides respectively.
  9. Hovea
    • Australia
    • ARC Energy Ltd
    • Hovea Production Facility
    • ICON Engineering was commissioned by ARC Energy to perform engineering design and preparation of engineering documents such as process flow diagrams, P & I Ds, and multidiscipline design as well as project management, operating procedures, documentation for regulatory authorities, assistance with construction supervision and commissioning.
  10. PM-3 CAA Oil And Gas Fields
    • Malaysia
    • Lundin
    • South China Sea
    • Bunga Kekwa Annexe Platform
    • Lundin had a need to support 2 additional wells from the 6 well slot Bunga Kekwa A platform. From conceptual design of the annexe platform to platform installation the total project duration achieved by ICON was only 4 1/2 months. The project was completed during the peak of the north east monsoon season without any incidents, injuries or medical treatments.
    • ICON's scope covered design assistance, installation procedure development and all installation works.
  11. West Patricia Oil And Gas Field
    • Malaysia
    • Murphy
    • West Patricia Field Development
    • WP-PA Topsides Installation
    • Following the successful installation of the West Patricia WP-PA jacket, ICON was engaged to install the 600 tonne topsides production module using the floatover method. The floatover was performed after completion of the drilling programme.
    • The barge anchoring, positioning, floatover and docking operation was completed within eight hours of the barge arriving in the field.
  12. Cliff Head Oil Field
    • Australia
    • Roc Oil Ltd
    • Cliff Head Project Conceptual Engineering
    • ICON Engineering was commissioned by Roc Oil to perform conceptual engineering design and cost estimation.
    • The final proposed concept for the project development was:
      • Unmanned wellhead platform (9 wells).
      • Dongara onshore processing plant.
      • A 12” subsea insulated production pipeline and 12” subsea insulated injection water pipeline.
      • Export from Dongara Plant to Ports, via road transportation.

Roc Oil Ltd
12-8 East and 12-8 West Offshore Facilities
Beibu Gulf, China

ICON Engineering completed the conceptual engineering design and the preparation of the applicable engineering documents for Roc Oil, to be included within an “Overall Development Plan” to be presented to the Chinese authorities.

ICON prepared the concept documents and drawings, such as the BOD, PFD’s, P&ID’s, Equipment Layouts, electrical block diagrams and installation concept schematics.

Apache Energy Limited
Double Island Project
Monopod platform design & installation

As part of its ongoing quest to develop previously uncommercial fields, Apache, in conjunction with ICON, developed the “Minnowpod” concept. This monopod substructure is used as the surface conductor on shallow water exploration wells which have a high probability of success.

ICON carried out the design, fabrication and installation, due to extensive experience with minimal facilities platforms offshore.

Apache Energy Ltd
Shallow Water Minimal Monopods
Design and Installation – Western Australia

ICON Engineering was commissioned by the Apache Energy Drilling Group to design shallow water monopod structures using specially reinforced 30" conductors as the platform legs. The philosophy requires that the conductors not only serve as surface casings of exploration wells, but they can also be retained for later conversion to minimal offshore structures in the event that a discovery is made.

Hookup and commissioning of these platforms is minimal due to their simplicity.

ARC Energy Ltd
Dongara, Western Australia
Pipelines and Flowlines

ICON Engineering provided engineering and management support to ARC for all these infield and export pipelines. Scope of work included project management, conceptual analysis, route determination, documentation for regulatory authorities, design validator liaison, pipe procurement, construction management and commissioning.

  1. Angostura Gas Field
    • Trinidad And Tobago
    • BHP Billiton
    • Angostura FEED Project
    • ICON Engineering was commissioned by BHPB to perform a FEED study and cost estimates for three wellhead platform topsides, offshore Trinidad.
    • ICON’s work in Perth commenced with a conceptual proposal to meet client requirements that the wellhead platforms be unmanned, remotely controlled, with restricted personnel visits. Work then proceeded to multi-discipline detailed design.
  2. Buffalo Oil Field
    • Timor Sea
    • Nexen Petroleum
    • Operational Support Services
    • ICON Engineering provided operational support services to Nexen Petroleum on the Buffalo Field in the Timor Sea. ICON had originally installed the Buffalo platform.
    • The work scope included detaileled involvement in budget preparation and to undertake emergency projects such as the recovery of the tanker loading hose and key projects such as drilling programs and abandonment planning for the field.

Cairn Energy, Bangladesh
South Sangu Development
Conceptual Design

ICON Engineering was commissioned by Cairn Energy to undertake a conceptual study of a minimal facilities development of the South Sangu gas field offshore Chittagong in Bangladesh.

The work scope included a conceptual study of the South Sangu platform, the pipeline to Sangu A and the design of a deck extension and host facilities to be installed on the Sangu A platform.

Wandoo and Woollybutt Fields
Operating and Abandonment
Liability Assessment

ICON Engineering was engaged by a consortium of bidders to undertake the following work scopes:

• Identify regulatory requirements
• Define procedures for removal of all facilities.
• Prepare cost estimates to P10, P50 and P90 levels for facility and well
• Determine the ongoing operating costs

Shell UK Limited
Skiff Field Development
Platform Installation by Jackup Rig

ICON Engineering was commissioned by Shell to provide assistance with the installation of the Skiff platform in the Southern North Sea. The platform was installed by a jackup drilling rig. This was the first platform to be installed by this means in the UK sector of the North Sea. The installed cost was a fraction of that required using conventional methods

The project won the British Government Construction Industry Civil Engineering Award for 2000 in recognition of the novel design and installation method which challenged traditional practices.

Newfield Petroleum
Jabiru Field Abandonment Study

ICON Engineering was employed by Newfield to perform a study of the abandonment of the Jabiru Field. ICON produced a report outlining the costs and issues associated with the various options to assist the client in
discussions with regulatory authorities.

Nexen Petroleum
Buffalo Field Abandonment Strategy

In 2002, ICON was engaged by Nexen to assist in developing an abandonment strategy for the field.

The field consisted of a 380 tonne Wellhead Platform (WHP) linked to a 70,000 DWT FPSO anchored approximately 2km away in 300m water depth. The field was characterised by the fact that the WHP was on the steep edge of a shallow bank. The platform and FPSO were linked via a 10” Production Line, 4” Gas lift line and an umbilical.

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ICON Engineering Project

Laminaria Corallina Project
Heave Compensation System
Woodside Offshore Petroleum 1998

ICON Engineering was commissioned by Woodside to supply an In Line String Motion Compensator to support a load of 227 tonnes (500,000 lbs) for the installation of the Laminaria and Corallina subsea well completions. The work
scope included design, procurement, manufacture, testing and installation.

Incredibly the entire system was despatched 5 ½ weeks from the initial enquiry.

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ICON Engineering Project

Newfield Petroleum / Coogee Resources
Challis Field Abandonment Studies

ICON Engineering was employed by Newfield Petroleum to perform a study of the abandonment of the Challis Field.

A review of available heavy lift and submersible transportation vessels was undertaken and recommendations were made regarding the technical and commercial merits of the various options.

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ICON Engineering Project

Trencher Plough Feasibility Study
Woodside Offshore Petroleum
WA NW Shelf Second Trunkline Project

The study addressed trencher and plough options for stabilising the proposed 42” second trunkline. Trenching machine options were considered due to the existence of cap rock, which cannot be ploughed over a large proportion of the route. The concept utilised two powerful cutter slicers, which precede the plough and allow the material to be removed by the plough section.

This project was carried out in conjunction with several other specialist sub- consultants.

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ICON Engineering Project

West Australian Petroleum (WAPET)
Reanalysis of Saladin A Platform and
Installation of Fourth Conductor, 1999

ICON Engineering was engaged to reanalyse the Saladin A platform to support an additional well conductor. The work involved analysis and detailed design work for the conductor guide and hatches. The optimum solution chosen utilised a single conductor guide just above water and avoided any installation work below the water surface. ICON provided a turnkey service covering conceptual and detailed design, fabrication, preparation of installation procedures and supervision of offshore installation.

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ICON Engineering Project

Roller Skate Joint Development Project
Western Australian Petroleum Pty Ltd [now Chevron]
North West Self, Western Australia

ICON founders, Garrick Aberle and David Field were respectively the Project Manager and Designer / Senior Installation Engineer for this project. The development consists of 4 monopod platforms, two subsea pipelines and shore based oil separation nad gas sales conditioning facilities.

The 26 km long, 3 phase, 26” diameter production line and 36 km long, 6” gas export line were constructed using the beach pulled / bottom tow method. At the time, this was one of the longest pipelines in the world constructed in this manner.

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ICON Engineering Project

Yammaderry And Cowle Joint Development Project
West Australian Petroleum Pty Limited 1991
Offshore Thevenard Island, NW Australia

The installation, hookup and commissioning work was undertaken by WAPET
in-house using a team led by current ICON Engineering Directors. The
substructure was lifted from the transportation supply vessel horizontally
and upended using the rig's draw works. The structures were installed into
foundation holes drilled using reverse circulation techniques. They were then
grouted into place.


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