| Shetland Gas Plant | |
|---|---|
  Location within Shetland | |
| Alternative names | SGP |
| General information | |
| Type | Gas terminal |
| Location | Sullom Voe, ZE2 9UN |
| Coordinates | 60°28′26″N1°15′41″W / 60.474°N 1.2615°W |
| Completed | 2016 |
| Inaugurated | 2016 |
| Technical details | |
| Floor area | 133 acres (0.54 km2) |
The Shetland Gas Plant is a natural-gas processing plant in the Shetland Islands, Scotland.
The Shetland Gas Plant is the collection and gas processing facility for the offshore Laggan-Tormore project, comprising two large gas and gas condensate fields. The Laggan gas field was discovered in 1986. The Tormore condensate field was discovered in 2007. The development plan for the site was approved in March 2010.
The site was formally opened by Amber Rudd, the Secretary of State for Energy and Climate Change, on 16 May 2016. [1]
The plant is connected to the Shetland Islands Regional Gas Export Pipeline (SIRGE). The plant was built by Petrofac's Offshore Engineering & Operations unit; Petrofac is a recent constituent of the FTSE 100 Index. [2] The site and pipelines cost around £800m. The gas is exported from the site via a 230 km (140 mi)30-inch (760 mm) diameter pipe south to the Frigg UK System in Aberdeenshire.
The site is adjacent, to the east, of the Sullom Voe Terminal.
The Laggan and Tormore gas fields are around 125 km (78 mi) north-west of the Shetland Islands, in sea depths of 600 metres (2,000 ft). Production from the plant began on 8 February 2016. The production from the Laggan-Tormore project is expected to be around 93,000 barrels of oil equivalent per day.
Key data for the Laggan and Tormore fields is as follows: [3] [4] [5]
| Field Name | Laggan | Tormore |
|---|---|---|
| Block | 206/1a | 205/5a |
| Coordinates | 61.045139°N 2.87056°W | 60.197778°N 3.170139°W (WHPS) 60.913944°N 3.171917°W (Template / Manifold) |
| Discovered | 1986 | 2007 |
| Hydrocarbon contact, m TVDSS | 3909 | 3785 3940 |
| Production | Gas | Condensate |
| Permeability, mD | 10-20070 | 10-20070 |
| Oil gravity, °API | 52 | |
| Oil propeties | 0.3 cP viscosity, 0.038%CO2 | |
| Gas expansion factor, Sm3/m3 | 289 | 259 |
| Salinity, ppm | 6000-38000 | |
| Stock tank oil originally in place, MMstb | 92 | |
| Non-associated gas in place, billion cubic feet | 685 | 346 |
| Operator | Total | Total |
| Water depth, metres | 600 | 600 |
| Commissioned | 2016 | 2016 |
| Type | Subsea steel | Subsea steel |
| Function | Template / Manifold | Wellhead protection structure (WHPS), Template / Manifold |
| Number of production wells | 4 | 2 |
| Subsea weight, tonnes | 550 | 150 (WHPS), 550 (Template / Manifold) |
| Topsides weight, tonnes | 0 | 0 |
| Export | To Shetland Gas Plant via two parallel 141 km long, 18-inch diameter flowlines | |
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