SLEIPNER ØST
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General information
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Picture
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Discoveries included
Discoveries included Discovery name -
Activity status – history
Activity status – history StatusStatus fromStatus toProducing24.08.1993Approved for production15.12.198623.08.1993 -
Located in
Located in Block nameProd. licence15/9 -
Owner – current
Owner – current Owner kindOwner nameBUSINESS ARRANGEMENT AREA -
Operatorship – current
Operatorship – current Company name -
Licensees – current
Licensees – current Company nameNation codeCompany share [%]NO59.600000NO15.400000NO15.000000NO10.000000 -
Description
Description TypeTextDate updatedDevelopmentSleipner Øst is a field in the central part of the North Sea. The water depth is 80 metres. Sleipner Øst was discovered in 1981, and the plan for development and operation (PDO) was approved in 1986. The field has been developed with Sleipner A, an integrated processing, drilling and accommodation facility with a concrete base structure. The development includes the Sleipner R riser facility, which connects Sleipner A to the pipelines for gas transport, and the Sleipner T facility for processing and CO2 removal. Production started in 1993. A PDO for Loke Heimdal was approved in 1991 and for Loke Triassic in 1995. Two subsea templates were installed, one for production from the northern part of Sleipner Øst and one for production from the Loke deposit. The Alpha Nord segment was developed in 2004 with a subsea template connected to Sleipner T. The Utgard field is tied-back to Sleipner T for processing and CO2 removal. The CO2 is injected into the Utsira Formation via a dedicated well at Sleipner A. The Sigyn, Gungne, Gudrun and Gina Krog fields are tied-back to Sleipner A.28.02.2023ReservoirSleipner Øst produces gas and condensate. The Sleipner Øst and Loke reservoirs are in Paleocene turbidite sandstone in the Ty Formation, Middle Jurassic shallow marine sandstone in the Hugin Formation and in continental sandstone in the Triassic Skagerrak Formation. In addition, gas has been proven in the Heimdal Formation, overlying the Ty Formation. The Ty Formation has good reservoir quality, while the Skagerrak Formation generally has poorer reservoir quality than both Ty and Hugin Formations. The reservoirs are at a depth of 2,300 metres.28.02.2023Recovery strategyThe Hugin Formation reservoir is produced by pressure depletion. The reservoir in the Ty Formation was produced by dry gas recycling until 2005, and production from the Ty reservoir stopped in 2012. To optimise production, wells are produced at a reduced inlet pressure.28.02.2023TransportSales gas is exported from the Sleipner A facility via Gassled (Area D) to market. Unstable condensate is transported to the Kårstø terminal by pipeline.28.02.2023StatusSleipner Øst is in the late tail production phase. The main focus is on increasing reserves and decreasing production decline. It is expected that Sleipner Øst continues operation for tied-back fields after cease of own production. As a part of the electrification of the Utsira High area, the facilities are planned to be operated with power from shore with start-up in 2023.28.02.2023 -
Investments (expected)
Investments (expected) The operators future investments related to the reservers from 2022 [mill NOK 2022-kroner]. The stated investment estimate has not been corrected for possible investment sharing.1347 -
Investments (historical)
Investments (historical) Investments
[mill NOK nominal values]Sum29443202158920201420197520185620179020162192015344201440620134882012406201120120102132009562200896120075032006323200529720041982003652002311200129020003561999162199821419972319961471995284199448419933835199265711991471819903670198917571988538198773 -
Production , saleable
Production , saleable MonthNet - oil
[mill Sm3]Net - gas
[bill Sm3]Net - condensate
[mill Sm3]Net - NGL
[mill Sm3]Net - oil equivalents
[mill Sm3]Sum0.389803197.64009826.83227425.334007250.1961820.0102760.0544200.0000000.0033170.0680130.0142690.0760710.0000000.0034520.0937920.0174190.0891190.0000000.0134650.1200030.0319020.1423490.0000000.0330880.2073390.0416520.1703650.0000000.0415100.2535270.0432150.1929610.0000000.0457690.2819450.0527670.1381410.0000000.0323220.2232300.0587530.2922020.0000000.0565870.4075420.0679350.3490500.0000000.0749730.4919580.0516151.5118830.0178800.0866561.6680340.0000005.9398750.0600710.1419616.1419070.0000006.8956430.0907220.2091467.1955110.0000008.0984950.1425690.2621868.5032500.0000008.0881740.1438490.3119038.5439260.00000010.0833170.2188910.40579710.7080050.00000011.3351800.3093360.48412412.1286400.00000013.4202290.4127510.61036314.4433430.00000013.2152610.4670990.69964414.3820040.00000014.3214620.6069600.80560315.7340250.00000012.6918700.7199830.90386514.3157180.00000013.2326231.0148701.08310515.3305980.00000013.4806531.5286431.73353216.7428280.00000011.6412581.8768671.82124415.3393690.00000011.8055842.1131721.85432415.7730800.0000008.0694932.6366562.20648212.9126310.0000007.1978812.5860322.10214911.8860620.0000007.5004782.6996192.18702412.3871210.0000007.6251743.1953522.54821213.3687380.0000005.1954003.1683722.48866010.8524320.0000003.9517912.3826001.7841728.1185630.0000000.8336960.4399800.2993721.573048 -
Production , sum wellbores
Production , sum wellbores MonthGross - oil
[mill Sm3]Gross - gas
[bill Sm3]Gross - condensate
[mill Sm3]Gross - oil equivalents
[mill Sm3]Sum0.000000100.89690155.855058156.7519590.0000000.0616060.0150840.0766900.0000000.0859940.0211000.1070940.0000000.0928210.0331990.1260200.0000000.1461860.0748820.2210680.0000000.1750290.1079890.2830180.0000000.1933680.1188770.3122450.0000000.1358120.0687590.2045710.0000000.2943930.1334360.4278290.0000000.3540670.1646960.5187630.0000000.3698680.1751000.5449680.0000000.4462340.2294030.6756370.0000000.6600710.3505231.0105940.0000000.9371990.4637671.4009660.0000001.2508550.5097331.7605880.0000002.0790770.6210182.7000950.0000003.7686150.8736944.6423090.0000004.7332201.0589325.7921520.0000004.9319971.2110976.1430940.0000005.7480031.4371787.1851810.0000005.4648201.6373317.1021510.0000005.5382292.1597667.6979950.0000006.8167983.32747510.1442730.0000007.3655973.81276411.1783610.0000007.1110434.31064011.4216830.0000007.4416105.11304612.5546560.0000007.2544115.23833112.4927420.0000007.2178555.42508712.6429420.0000007.5139166.02008413.5340000.0000007.0341575.96726113.0014180.0000004.7474864.3461739.0936590.0000000.9265640.8286331.755197 -
Production – charts
Production – charts Production – charts Production – charts Production – charts Production – charts Production – charts Any produced water is only included after 1.1.2000 -
Wellbores – exploration
Wellbores – exploration Wellbore nameEntered dateCompleted datePurposeStatusContent04.05.198114.07.1981WILDCATP&AGAS/CONDENSATE18.09.198123.12.1981APPRAISALP&AGAS/CONDENSATE21.03.198227.05.1982APPRAISALP&AGAS/CONDENSATE28.06.198224.08.1982APPRAISALP&AGAS/CONDENSATE09.12.198230.03.1983WILDCATP&AGAS/CONDENSATE28.04.199104.05.1991WILDCATP&AGAS/CONDENSATE16.02.199420.03.1994WILDCATRE-CLASS TO DEVGAS -
Wellbores – development
Wellbores – development Wellbore nameEntered dateCompleted datePurposeContent15.01.200010.03.2000INJECTIONGAS29.08.199403.11.1994PRODUCTIONGAS16.09.199306.10.1993PRODUCTIONGAS31.12.200126.01.2002PRODUCTIONGAS20.04.199507.03.1996PRODUCTIONGAS22.05.199408.06.1994PRODUCTIONGAS06.08.199302.09.1993PRODUCTIONGAS01.07.200210.08.2002PRODUCTIONGAS09.07.199502.08.1995PRODUCTIONGAS14.11.200802.01.2009OBSERVATIONNOT APPLICABLE06.01.200926.01.2009PRODUCTIONGAS/CONDENSATE09.08.200711.04.2008PRODUCTIONDRY07.05.200824.06.2008PRODUCTIONGAS/CONDENSATE12.01.199502.03.1995PRODUCTIONGAS13.03.199604.04.1996INJECTIONCO212.03.200728.05.2007PRODUCTIONGAS/CONDENSATE28.05.199502.07.1995INJECTIONGAS12.03.199514.04.1995PRODUCTIONGAS09.11.199427.12.1994PRODUCTIONGAS16.02.199420.03.1994PRODUCTIONGASPRODUCTION27.09.199621.11.1996INJECTIONGAS14.04.200517.05.2005PRODUCTIONGAS13.03.200924.03.2009PRODUCTIONGAS/CONDENSATE27.03.199407.05.1994INJECTIONGAS07.07.200105.09.2001PRODUCTIONGAS04.01.199430.01.1994PRODUCTIONGAS01.07.199423.08.1994INJECTIONWATER07.11.199318.12.1993INJECTIONGAS13.10.199212.11.1992PRODUCTIONGAS28.03.199814.05.1998PRODUCTIONGAS01.04.199316.04.1993PRODUCTIONGAS03.03.199327.03.1993PRODUCTIONGAS -
Wellbores – other
Wellbores – other Wellbore nameEntered dateCompleted datePurposeStatus