Hejre EPC Naval Architecture Assurance
Linch-pin were engaged by Dong Energy to carry out assurance activities for the pre-service operations associated with transporting the modules and integrated deck of the Hejre facilities from South Korea to the North Sea.
GERB / PRB Spool Analysis and Spreader Beam Design
A range of spreader beams were required as part of planning for a contingent recovery campaign of 18” spools from the seabed for the Ichthys LNG Project. Linch-pin carried out the design of the spreader beams as well as an analysis for the operability of the vessel crane to perform the operation.
Bass Strait Oil Assets Decommissioning Cost Estima
Linch-pin has provided interested parties an independent cost estimate and schedule for the decommissioning of the Bass Strait assets operated by Exxon Mobil
Balnaves RTM Clump Weight Recovery System
Specialist equipment design to remove the clump weight from the Balnaves FPSO Riser Turret Mooring. A technically challenging project delivered within a tight schedule.
Dropped Object Analysis
Linch-pin have developed a dropped object trajectory simulation package which predicts in the time domain the 3D motion of objects subjected to time buoyancy and hydrodynamic loads.
Naval Architecture Capability
Linch-pin experience and capability covers the conceptualising, design, execution and ongoing support of marine activities. These include global system performance, complex load transfer operations involving multiple bodies, transportation and installation assessment, and the design of floating systems.
Subsea Chain Puller
Linch-pin developed the decommissioning concept for the removal of the NCC Buoy. The concept involved the use of Linch-pin’s proprietary Subsea Chain Puller to remove tension from the buoy tethers prior to cutting them.
EPRS Lifting and Handling Frames
Linch-pin developed an innovative, simple, and effective concept for an Emergency Pipeline Repair System (EPRS) for Qatar Petroleum to be used in the Arabian Gulf. The design had tight restrictions on frame weights and sizes, whilst also being required to repair pipeline sizes ranging from 12” through to 60” in diameter.
Mooring System Design and Installation
Linch-pin has extensive experience with the design and installation of both temporary and permanent mooring systems, for offshore facilities such as FPSOs, FSOs, MODUs, derrick barges, cargo barges and for near-shore and quayside activities.
East Spar Decommissioning - GBS Analysis
Linch-pin developed the decommissioning concept for the removal of the East Spar facilities. The existing Gravity Base Structure (GBS) was used to restrain the buoy during the removal operation.
Thevenard Island Retirement
Chevron engaged the services of Linch-pin prior to the first framing session in Phase 1 of the Chevron Project Development and Execution Process (CPDEP) for the retirement of the TVI facilities. Linch-pin assisted Chevron in a number of subsequent phases of work
BioWave Installation Analysis
The bioWAVE is an innovative, clean energy solution being developed for utility-scale power production from ocean waves by BioPower Systems. Linch-pin provided the installation analysis and engineering for a 250 kW bioWAVE pilot project that was constructed and installed in 2015.
Galoc Field Decommissioning Study
Linch-pin developed concepts for the plugging and abandonment of all subsea wells and for the removal / abandonment of all the subsea facilities.
Transport & Installation Engineering
The Linch-pin structural and installation engineering team has the experience and expertise to assist clients throughout the T&I process, from concept through to execution.
Linch-pin has provided marine and installation management support during many major offshore construction campaigns.
Personnel Transfer System
Linch-pin assists technology suppliers such as Ampelmann with structural and installation engineering expertise to provide practical methods of supporting and seafastening the gangway system to vessel decks and providing stair tower access for personnel staging areas.
CarbonNet CCS Appraisal Well Cost Estimate
The CarbonNet Project is investigating the potential for establishing a world class, large scale, multi-user carbon capture and storage (CCS) network in Victoria’s Gippsland region, transporting the CO2 via pipeline and injecting it into deep offshore underground storage.
Gemfish Field Development Study
Nexus Energy was evaluating the economic merits of drilling the Gemfish prospect. Linch-pin was requested to produce a cost estimate report to upgrade the Patricia Baleen Process Plant to process the Gemfish gas which is estimated to be 20% C02.
Thevenard Island Retirement
The TVI Retirement Project consisted of the removal of 9 wellhead platforms from the North West Shelf of Western Australia. Linch-pin carried out the detailed structural analysis and design for the removal of the platforms using a Heavy Lift Vessel.
Ibhubesi Gas Development
Provision of Project Management and Engineering services in the pre-FEED Phase for the Ibhubesi Gas to Power Project in South Africa.
Timor Sea EPRS Subsea Lifting Frame
Linch-pin carried out a detailed structural design and analysis for an Emergency Pipeline Repair System (EPRS) to be utilised in the Timor Sea
Balnaves MEFF Decommissioning Study
KUFPEC Australia engaged Linch-pin to provide expert decommissioning consultancy services to develop concepts for the removal/abandonment of the subsea facilities including P10, P50 and P90 cost estimates and a detailed schedule for all phases of the campaign.
Goodwyn Alpha Drilling Module Removal Study
Linch-pin developed removal options for the GWA drilling modules and providing cost and schedule information in order for WEL to make a considered decision on which option to proceed with.
BHPB Griffin Field Abandonment Study
Linch-pin provided expert decommissioning consultancy services to develop concepts for the abandonment of the BHPB Grffin Field subsea facilities.
Ichthys URF In-Line Tee Design
Linch-pin developed a concept design for the 18 production in-line tee and carried out the detailed structural engineering design and analysis.
CACT Nepsys Support
CACT was faced with the issue of subsea fatigue cracks in some Jacket joints on a platform in Bohai Bay, China. Linch-pin provided specialist technical support to the inspection, analysis and repair operation.
Montara WHP H5 Well Tieback
Linch-pin supported PTTEP AA with the design (structural, piping, E&I), procurement, fabrication and installation preparations for the tieback of the H5 dry tree to the production manifold on the Montara WHP. This included the preparations of offshore procedures and detailed workpacks.
Montara WHP Commissioning Marine Support
As part of the Montara Recovery Project, Linch-pin assisted PTTEP with the Montara WHP Commissioning by providing marine, logistics and permitting support.
Linch-pin provided project management assistance for the decommissioning and abandonment of the Jabiru Filed located in the Timor Sea.
Jabiru RTM In-Situ Assessment
Linch-pin was invited to model the Jabiru FPSO RTM in 120.9m water depth in the Timor Sea to assess the likely condition of the RTM system post disconnect of the FPSO, and to analyse potential outcomes in terms of intact and single line failure cases, as well as the consequences of buoyancy tank loss of integrity.
Jabiru FPSO and RTM Relocation and Reuse
Linch-pin was invited to assess the feasibility of relocating the FPSO Jabiru Venture and its associated mooring system to a new location within the Timor Sea.
Ichthys URF In-line Structures
Linch-pin personnel lead a multi-discipline team to develop conceptual designs for 10 different in-line structures on the Ichty's URF project.
Montara Swift Subsea Manifold Inspection Campaign
With only two weeks lead time Linch-pin developed a hydro-blast cleaning, visual/ borescope/ UT and RT inspection and a decontamination and preservation methodology for the manifold. Based on these, a detailed budget, schedule and scopes of work were developed for repair work.
Montara Riser Launcher Receiver Inspection Tool
Linch-pin was engaged by PTTEP AA to design pig and Ultrasonic Testing (UT) tool launchers and receivers to assist with the riser inspections as part of the Montara Wellhead Platform riser inspection campaign.
Montara WHP Riser Replacement
Linch-pin was invited by PTTEP AA to assist them with developing and managing a contingency campaign to prepare for and, if necessary, replace the Montara WHP risers.
Montara WHP Riser Inspection
Linch-pin was invited by PTTEP AA to assist in developing and managing an inspection campaign utilising the field located asset
Montara WHP Hookup and Refurbishment
Linch-pin was invited by PTTEP AA to assist them with managing the Montara Recovery Project WHP Hook-up and Refurbishment Campaign.
Ichthys URF Subsea Manifolds
Linch-pin personnel were seconded into Intecsea to lead a multi-discipline team of Engineers and Draftspeople on the Ichthys URF project. As part of that work a concept design for a 3000t to 4000t Gas Export Riser Base (GERB) in 250 m of water was developed.
Ichthys Mid Depth Buoys Conceptual Development
Intecsea engaged Linch-pin personnel to provide a conceptual design of mid-depth buoys for the Ichthys field in 250m of water.
Legendre Field Decommissioning
Linch-pin was invited to assist Apache with the management of the concept select, define and execution stages of the decommissioning and abandonment of the Legendre Field.
Challis FPSO Decommissioning
Linch-pin assisted PTTEP with the management of the decommissioning and abandonment of the Challis oil production facilities comprising a FPSO permanently moored to a Single Anchor Leg Mooring (SALM).
Challis SALM In-situ Assessment
Linch-pin produced a hydrodynamic model of the Challis SALM in OrcaFlex to assess the likely condition post disconnect from the FPSO.
Gas Development Study
Detailed front end study to develop a steel, gravity based wellhead platform concept with modular drilling.
Flowline Reel Condition Assessment
Linch-pin completed a full condition survey and structural assessment of an 'out-of service' 250t capacity flowline reel.
Offshore Wind Turbine Gravity Base Foundation
Linch-pin has patented a gravity base design for offshore wind turbines that allows for the turbine to be pre-installed onshore and towed to site. The gravity base avoids expensive drilled and grouted pile designs.
Montara Subsea Skids Procurement, Fabrication and
PTTEP awarded the procurement, fabrication and fast-track delivery of the subsea structures to Linchpin in a lump sum contract as part of the electrical umbilical replacement project. Linch-pin completed the detailed design of the structures under a separate engagement.
In-Situ Jacket Collapse
Linch-pin, with support from Santos and in collaboration with Woodside Energy and the National Energy Resource Australia organisation (NERA), has developed a world first concept for collapsing a Jacket in-situ - flat onto the seabed.