The Tyne, Trent and Tors gas fields are depleted
natural gas
Natural gas (also called fossil gas or simply gas) is a naturally occurring mixture of gaseous hydrocarbons consisting primarily of methane in addition to various smaller amounts of other higher alkanes. Low levels of trace gases like carbo ...
reservoirs and former gas production facilities in the southern
North Sea
The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian S ...
, centred around the Trent installation about 115 km east of
Flamborough Head
Flamborough Head () is a promontory, long on the Yorkshire coast of England, between the Filey and Bridlington bays of the North Sea. It is a chalk headland, with sheer white cliffs. The cliff top has two standing lighthouse towers, the olde ...
, Yorkshire. The fields produced gas from 1996 to 2020.
The fields
The Tyne, Trent and Tors (Kilmar and Garrow) gas fields are located in UK Offshore Blocks 44/18a, 43/24, 43/22a, 42/25a and 43/21a.
Tyne and
Trent
Trent may refer to:
Places Italy
* Trento in northern Italy, site of the Council of Trent United Kingdom
* Trent, Dorset, England, United Kingdom Germany
* Trent, Germany, a municipality on the island of Rügen United States
* Trent, California, ...
are named after English rivers that flow into the North Sea.
Kilmar and
Garrow are named after Tors in Cornwall, and together were referred to as the Tors development. The gas reservoirs have the following characteristics.
Development
The Tyne, Trent, Kilmar and Garrow gas fields were developed over the period 1996 to 2008. Gas was produced by five offshore installations, detailed in the table.
Gas export from Trent reused the 24” Esmond to Bacton pipeline (Esmond Transmission System) to the
Bacton gas terminal
The Bacton Gas Terminal is a complex of six gas terminals within four sites located on the North Sea coast of North Norfolk in the United Kingdom. The sites are near Paston and between Bacton and Mundesley; the nearest town is North Walsham.
T ...
, also known as EAGLES East Anglia Gas and Liquids Evacuation System pipeline.
Production
On the Tyne installation fluids from the wellheads were routed to the 3-phase Production Separator. The gas and condensate streams were metered then cojoined and sent to the pipeline to Trent. Separated water was metered and passed to the Produced Water Filter before disposal overboard.
On Trent the fluids from Tyne were routed to a slug catcher then comingled with Trent gas from the Trent Production Separator. The combined gas stream was routed across the bridge to the TC platform. Here it passed successively to a Separator, LP Compressor, Cooler, Separator, HP Compressor, Cooler and Discharge Scrubber. The gas stream was routed back to the Production platform. Here it was dried by counter current contact with Tri-Ethylene Glycol before being sent to Bacton.
An outline of the gas production from the fields is summarised in the table.
The production profile, in mcm/y, of the Trent field was as shown.
Decommissioning
Perenco submitted a Decommissioning Programme for the Tyne installation to the UK Oil & Gas Authority in 2018. This will entail plugging and abandoning the wells and removal of all structures above the sea bed. Following shutdown of the Trent platform in 2020 Alpha Petroleum announced the Kilmar and Garrow would be shutdown.
Since 2016 gas from the
Cygnus A complex has been routed via a 55 km 24" export pipeline to a tie-in on the Esmond Transmission System (ETS) and then to Bacton.
See also
*
Bacton gas terminal
The Bacton Gas Terminal is a complex of six gas terminals within four sites located on the North Sea coast of North Norfolk in the United Kingdom. The sites are near Paston and between Bacton and Mundesley; the nearest town is North Walsham.
T ...
*
List of oil and gas fields of the North Sea
This list of oil and gas fields of the North Sea contains links to oil and natural gas reservoirs beneath the North Sea. In terms of the oil industry, "North Sea oil" often refers to a larger geographical set, including areas such as the Norwegi ...
*
Esmond, Forbes and Gordon gas fields
Esmond, Forbes and Gordon are three adjacent, now depleted, natural gas fields in the southern North Sea, 170 km east of Teesside.
The fields
Esmond, Forbes and Gordon were the most northerly gas fields in the UK sector of the southern North ...
References
{{reflist
Natural gas fields in the United Kingdom
North Sea energy