Case Study

Oilfield Development and Installation

Project description

The OGX Waimea field is in the Campos Basin in block BM-C-41, Brazil. Water depth ranges from 120m North to 140m South of the development area.

Phase 1 of development consisted of early well testing and Pilot phases combined. Well testing involved the tie-back of a production well to an STP Buoy turret moored FPSO situated 2km North West of the well. The remaining Pilot phase included the tie-back of two further production wells and two injection wells.

Each production well is connected to the STP buoy via a production line, a service line and an umbilical. The two water injection wells are also tied back with a single flowline and an umbilical.

Our Scope

PDi were contracted to provide engineering support for both the onshore pre-engineering and offshore operations. All Engineering work was performed at the PDi office in Aberdeen, with ad-hoc visits to Brazil as required.

PDi’s scope included:

  • Installation Engineering Support (Flowline, Umbilical, MWA, Piles, Moorings and STP Buoy Installation Procedures)
  • Structural Engineering Support
  • Design of Horizontal Lay System
  • Management of the Fabrication of the Horizontal Lay System
  • Assembly and commissioning of the Horizontal Lay System
  • Management and preparation activities for the STP Buoy
  • Orcaflex Analysis support for the Buoy Installation
  • Orcaflex Analysis support for the flexible product installation
  • Managed the Hazard Identification and Risk Assessment in Rio and Aberdeen.
  • Managed the Fabrication of all installation aids
  • Managed the UK mobilisation of the Aker Wayfarer
  • Design of all the seafastening arrangements
  • Offshore support
Client

​GE Wellstream

Location

Brazil

Date

April 2010 (2 years)

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