Laggan Tormore

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Laggan-Tormore Oil & Gas Development

Discipline: Basic Engineering

Client: Total E&P UK Limited

Location: UK North Sea, West of Shetland

Basic engineering for subsea tieback to Sullom Voe terminal

A joint venture between ODE and DORIS Engineering was awarded a contract by TOTAL E&P UK Ltd to carry out basic engineering for the Laggan-Tormore Project, west of Shetland. Laggan-Tormore is the most significant oil & gas project currently under development in the UK.

Basic engineering, covering the overall development facilities (subsea production facilities, flowlines, umbilicals, onshore gas treatment plant and export pipeline), was successfully executed from ODE's Kingston-upon-Thames office. At its peak, the project team comprised more than 100 engineers and specialists who executed well in excess of 100,000 manhours of work.

The Laggan and Tormore gas fields are located in 600m water-depth, 125 km west of the Shetland Islands.  The fields will be produced through two subsea production systems with a total of eight subsea wells, tied back over 125km to a new gas-processing plant adjacent to the existing Sullom Voe terminal. Treated gas will be exported via a new 234km pipeline to a tie-in point in the Frigg UK pipeline and then to the St Fergus terminal in North-East Scotland. First gas is scheduled for 2013/14.