Frigg gas field

{{Infobox oil field

| name = Frigg gas field

| location_map = North Sea

| location_map_width =

| location_map_text =

| coordinates = {{coord|59|52|48.48|N|2|3|59.40|E|type:landmark|display=inline,title}}

| coordinates_ref =

| region = North Sea

| country = Norway

| locblock = 25/1

| offonshore = Offshore

| operator = Total S.A.

| partners =

| image = North Sea Fields Zoom north.jpg

| caption = North Sea oil and gas fields

| discovery = 1971

| startofproduction = 8 May 1978

| peakofproduction =

| abandonment = 26 October 2004

| est_gas_bft = 6780

| producingformations =

}}

Frigg gas field is a natural gas field on Norwegian block 25/1Heritier et al, 1980, p. 59 in the North Sea, on the boundary between the United Kingdom and Norway. The field is named after the goddess Frigg. King Olav V of Norway officially opened production on 8 May 1978. Production was closed on 26 October 2004. The field is situated {{convert|230|km}} northwest of Stavanger. Operator for the field was the French oil company Elf Aquitaine, which merged and changed name to Total S.A.

Operations were regulated according to an agreement between the UK and Norwegian governments called the Frigg Treaty.

Infrastructural changes were made in three phases:

Phase I - 1977
Phase II - 1978
Phase III - 1981

Geology

The field was discovered at a depth of {{convert|1850|m|ft}} by the Petronord group (Elf Aquitaine, Total Oil Marine Norsk, and Norsk Hydro) and the Norwegian State in 1971 with Well 25/1-1 using the Semi-submersible Neptune P 81 in {{convert|100|m}} of water.Heritier et al, 1980, p. 60 The well was located following interpretation of a 15 by 20 km grid of Reflection seismology lines recorded in 1965. A 5 by 5 km finer grid of seismic lines were recorded in 1969, followed by a 1 by 1 km grid in 1973, which, combined with four appraisal wells, determined the field was {{convert|115|km2}} in area with a {{convert|170|m|adj=on}} gas column in Lower Eocene sandstones forming an abyssal fan in the Viking Structural basin. The fan structure appears on seismic sections as a low relief Anticline that includes a Flat spot caused by the Density contrast of the gas.Heritier et al, 1980, p. 65

Development

The Frigg field has been developed through a number of offshore platforms.{{Cite book|last=Oilfield Publications Limited|title=The North Sea Platform Guide|publisher=Oilfield Publications Limited|year=1985|location=Ledbury|pages=223–46}}

class="wikitable"

|+Frigg installations

!Platform

!Coordinates

!Function

!Type

!Legs

!Well slots

!Installed

!Production start

!Production to

Frigg DP1

|59°52’40”N 02°04’48”E

|Drilling platform

|Steel jacket

|October 1974 buoyancy tanks collapsed damaged beyond recovery

|–

Frigg CDP1

|59°52’31”N 02°03’42”E

|Drilling, production

|Concrete gravity

|24

|September 1975

|September 1977

|TP1

Frigg TP1

|59°52’47”N 02°03’51”E

|Treatment

|Concrete gravity

|–

|June 1976

|September 1977

|MCP01

Frigg QP

|59°52’42”N 02°03’54”E

|Quarters platform

|Steel jacket

|–

|July 1975

|–

Frigg DP2

|59°53’10”N 02°04’21”E

|Drilling, production

|Steel jacket

|24

|May 1976

|August 1978

|TCP2

Frigg TCP2

|59°52’48”N 02°04’01”E

|Treatment, compression

|Concrete gravity

|–

|June 1977

|August 1978

|MCP01, DP2

Frigg MCP-01

|58°49’39”N 00°17’12”E

|Manifold, compression

|Concrete gravity

|–

|June 1976

|September 1977

|St Fergus

Frigg flare platform FP

|59°52’54”N 02°03’21”E

|Flare

|Articulated steel

|–

|October 1975

|December 1977

|From TP1

Frigg NE

|59°59’07”N 02°14’52”E

|Field control station

|Steel tower, concrete base

|6 subsea trees

|June 1981

|December 1983

|TCP2

The initial production of gas (in 1000 standard cubic metres) was: {

"version": 2,

"width": 400,

"height": 200,

"data": [

{

"name": "table",

"values": [

{

"x": 1977,

"y": 1566

{

"x": 1978,

"y": 7309

{

"x": 1979,

"y": 13619

{

"x": 1980,

"y": 16322

{

"x": 1981,

"y": 17967

{

"x": 1982,

"y": 16714

{

"x": 1983,

"y": 17623

{

"x": 1984,

"y": 16573

}

]

}

"scales": [

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"name": "x",

"type": "ordinal",

"range": "width",

"zero": false,

"domain": {

"data": "table",

"field": "x"

}

{

"name": "y",

"type": "linear",

"range": "height",

"nice": true,

"domain": {

"data": "table",

"field": "y"

}

"axes": [

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"type": "x",

"scale": "x"

{

"type": "y",

"scale": "y"

}

"marks": [

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Pipelines

Pipelines associated with the Frigg field are as follows:

class="wikitable"

|+Frigg field pipelines

!Start

!Terminal

!Length

!Diameter

!Type

TP1 / TCP2

|MCP-01

|2 × 186 km

|32”

|Gas

MCP-01

|St Fergus

|2 × 174 km

|32”

|Gas

CDP1

|TP1

|2 × 500 m

|26”

|Gas

CDP1

|TP1

|500 m

|4”

|Condensate

TP1

|CDP1

|500 m

|8”

|Kill

DP2

|TCP2

|2 × 700 m

|26”

|Gas

DP2

|TCP2

|700 m

|4”

|Condensate

TCP2

|DP2

|700 m

|8”

|Kill

TP1

|FP

|500 m

|24”

|Gas

TP1

|FP

|500 m

|–

|Gas air pilot

Subsea template

|TCP2

|18 km

|16”

|Gas

TCP2

|NEF

|18 km

|1.25”

|Methanol

FCS

|Template

|500 feet

|2”

|Kill

=Pipelines connected to the Frigg field=

Frigg UK System - natural gas transportation system from the Alwyn North Field in the North Sea via the Frigg field to St. Fergus near Peterhead in Scotland. The Frigg UK System is operated by Total E&P UK Plc.
Vesterled - mostly the former Frigg Norwegian Pipeline.
Gas production from the Odin gas field was transported to Frigg TCP2 by a 26 km 20-inch pipeline.

Images

File:Remember Frigg.jpg|Bridge from the Frigg field outside the Norwegian Petroleum Museum in Stavanger

Future plans

The Frigg field may be revitalised. A production licence on the Norwegian side of Frigg was allocated to Equinor in 2016. An appraisal well was drilled on Frigg in 2019. Equinor also holds the licence rights on the UK side of the field.{{cite web |last1=Gjerde |first1=Kristin Øye |title=New life for Frigg gas field? |url=https://equinor.industriminne.no/en/new-life-for-frigg-gas-field/ |website=INDUSTRIMINNE.NO |publisher=Norwegian Petroleum Museum}}

References

Bibliography

{{Cite book|last1= Heritier|first1= F E|last2= Lossel|first2= P|last3= Wathne|first3= E|date= 1980|chapter= Frigg Field-Large Submarine-Fan Trap in Lower Eocene Rocks of the Viking Graben, North Sea|editor-last= Halbouty|editor-first= Michel Thomas|title= Giant Oil and Gas Fields of the Decade:1968–1978|series= AAPG Memoir 30|place= Tulsa|publisher= American Association of Petroleum Geologists|isbn= 0891813063|oclc= 7355859}}

External links

[http://www.kulturminne-frigg.no/index.asp?iLangId=1 Frigg Industrial Heritage] {{Webarchive|url=https://web.archive.org/web/20090905034516/http://www.kulturminne-frigg.no/index.asp?iLangId=1 |date=2009-09-05 }} - a website by the Norwegian Petroleum Museum, English version
[https://web.archive.org/web/20051224052336/http://www.total.no/en/Activities/Field+decommissioning/ Frigg decommissioning] - at the website of Total E&P Norge
[http://www.abdn.ac.uk/historic/energyarchive/timeline.shtml Frigg UK: 30 Years on]
[https://web.archive.org/web/20080918193112/http://www.aftenbladet.no/energi/energymap/ Frigg in Interactive Energy Map]

Category:Natural gas fields in Norway

Category:North Sea energy

Category:TotalEnergies