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Client: GUPCO
Location: Egypt

Performing enhanced FEED.

Xodus Group’s multi-discipline teams deliver enhanced FEED for a minimum facility platform and pipelines installation in the Gulf of Suez.

Challenge
Gulf of Suez Petroleum Company (GUPCO) tasked Xodus Group with providing enhanced Front-End Engineering and Design (FEED) for a minimum facility platform and pipelines installation in the shallow waters of the Gulf of Suez.

Our integrated team of specialists were asked to deliver advanced levels of detail in a tight timescale to enable the subsequent detailed design period to be reduced, bulk materials orders to be accelerated and a challenging planned installation schedule and first oil date to be met.

Assignment scope
The platform design was for a maximum of two, dry tree, production wells with full well stream transfer to a subsea export pipeline and no offshore processing. The platform was to be accessed by boat only, of a minimum size and cost, but with a footprint capable of occasionally accepting well workover equipment. The platform was to be powered by a solar system (including battery banks) with no generator or alternative source back-up.

The platform design consisted of three decks supported by a three-legged substructure. Our team produced deck and jacket framing plans and performed various structural design analyses, including earthquake and pushover design. Geotechnical assessment was conducted to determine the platform foundation design, the size of the required piles and their drive-ability with the pre-selected installation vessel’s hammers.

The subsea scope also included the mechanical design of one production and one gas-lift line, each tying into the existing subsea infrastructure. The design of a hot tap assembly was carried out, and an installation and pre-commissioning methodology produced to support GUPCO’s intention to tie into a live, pressurised gas pipeline.

Key project FEED deliverables included:

  • Piping and Instrumentation Diagrams (P&IDs), heat and material balances, cause and effect diagrams, platform layouts and general arrangements, process /mechanical, electrical and instrument specifications and data sheets
  • Safety analyses included dropped object, ship impact and fire and explosion consequence reports
  • The project was also subjected to Hazard Identification (HAZID) studies, Hazard and Operability (HAZOP) analysis, Environmental Impact Identification (ENVID) and Layers of Protection Analysis (LOPA) reviews
  • Discipline material take-offs were subsequently developed in order to achieve a +20% / -15% Capital Expenditure (CAPEX) estimate that was used to support the advancement of the project through its sanction gate and into the detailed design phase.

Results

  • The platform and pipelines FEED design was successfully delivered in 9,200 man-hours over a short period of five months
  • Our integrated multidiscipline team delivered a platform, jacket, foundation and subsea pipelines design, along with a +20% / -15% CAPEX estimate for 250te topsides and 350te three-legged jacket.