Case Study

Oil Export System Replacement

Project description

The field is located in the Central North Sea, approximately 320km north east of Aberdeen and in 110m water depth .

The platform is a large, heavy duty jack up rig fixed to a concrete gravity base structure containing oil storage tanks. The oil is exported from storage to shuttle tankers via the Submerged Loading System (SLS) located approximately 2km east of the platform.

The SLS includes a submerged turret mooring and loading interface buoy (STL) which is anchored to the seabed via eight mooring lines. Due to obsolescence the SLS was to be replaced with a new Offshore Loading System (OLS).

Our Scope

PDi provided the full suite of support required for management and engineering of the project. This was based on a small, core project management team providing full time support in the client’s office with technical discipline support provided remotely, as required, from PDi’s Aberdeen base. This allowed the client access to the full range of consultancy and engineering services required for delivery of the project without committing to full time resources.

The ad hoc technical support was required to support the procurement elements of the project and review engineering deliverables produced by alternative subcontractors and ensure compliance with industry codes, company standards and project specifications. This support encompassed the following areas and disciplines; Geotechnical, Structural, Piping Design, Welding & Materials, Analysis, Valves, Marine.

During the offshore phase of the project PDi also provided eight engineering representatives to provide 24hr coverage across four vessels working simultaneously in the field.

Timing and Duration

Commenced July 2014 (Duration 2 years)

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