ULA
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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 toProducing06.10.1986Approved for production30.05.198005.10.1986 -
Located in
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PDO – Plan for Development and Operations
PDO – Plan for Development and Operations Date PDO approvedDescriptionType27.04.2015Ula Trias PUD-fritakPDO Exemption30.05.1980Behandlet i StortingetPDO -
Owner – current
Owner – current Owner kindOwner namePRODUCTION LICENSE -
Operatorship – current
Operatorship – current Company name -
Licensees – current
Licensees – current Company nameNation codeCompany share [%]NO80.000000NO20.000000 -
Description
Description TypeTextDate updatedDevelopmentUla is a field in the southern part of the Norwegian sector in the North Sea. The water depth is 70 metres. Ula was discovered in 1976, and the plan for development and operation (PDO) was approved in 1980. The development consists of three facilities for production, drilling and accommodation, which are connected by bridges. The production started in 1986. The gas capacity at Ula was upgraded in 2008 with a new gas processing and gas injection module (UGU) that doubled the capacity. A PDO exemption for the Triassic reservoir was granted in 2015. Ula is the processing facility for the Tambar, Blane and Oda fields.13.12.2023ReservoirUla produces oil mainly from sandstone in the Upper Jurassic Ula Formation. The reservoir is at a depth of 3345 metres and consists of three units. There is also production from part of the underlying Triassic reservoir at a depth of 3450 metres. This is a tight sandstone reservoir with low effective permeability.09.12.2023Recovery strategyOil was initially recovered by pressure depletion, but after some years water injection was implemented to improve recovery. Water alternating gas injection (WAG) started in 1998. The WAG program has been extended with gas from the tied-in Tambar, Blane and Oda fields. Gas lift is used in some of the wells.28.02.2023TransportThe oil is transported by pipeline via the Ekofisk field to Teesside in the UK. All gas is reinjected into the reservoir to increase oil recovery.28.02.2023StatusThe current estimated reserves on Ula are more than three times higher than the original PDO estimates. All oil production from Ula is dependent on Enhanced Oil Recovery (EOR) measures. The positive effect of WAG injection resulted in the drilling of more WAG wells. Gas supply for WAG is currently challenging and production is declining.28.02.2023 -
Investments (expected)
Investments (expected) The operators future investments related to the reservers from 2023 [mill NOK 2023-kroner]. The stated investment estimate has not been corrected for possible investment sharing.145 -
Investments (historical)
Investments (historical) Investments
[mill NOK nominal values]Sum22525202221320218642020159120191992201871720172122016372015455201469420135662012484201118120107392009733200843020074362006498200555220041272003279200224220016152000442199936199812519972481996195199517719941811993320199265199115519903891989364198837519872441986162219853178198415721983180 -
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]Sum76.8755703.8539810.0000005.54448986.2740400.1376570.0000000.0000000.0081820.1458390.3637210.0000000.0000000.0289070.3926280.1960930.0000000.0000000.0220330.2181260.2909150.0000000.0000000.0301660.3210810.3143510.0000000.0000000.0432720.3576230.3102880.0000000.0000000.0245920.3348800.4271020.0000000.0000000.0090300.4361320.4549440.0000000.0000000.0135400.4684840.4614770.0000000.0000000.0157100.4771870.4959220.0000000.0000000.0166320.5125540.6462100.0000000.0000000.0222490.6684590.5439890.0000000.0000000.0226630.5666520.5291940.0000000.0000000.0210100.5502040.7390690.0000000.0000000.0273310.7664001.1011500.0000000.0000000.0530231.1541730.7468410.0014450.0000000.0332550.7815410.5494630.0009850.0000000.0239640.5744120.8047710.0068540.0000000.0445090.8561340.9880240.0000000.0000000.0642541.0522781.0853560.0000000.0000000.0736941.1590501.0336160.0280110.0000000.0655981.1272251.0705700.0500600.0000000.0842911.2049211.2409970.0456090.0000000.0923021.3789081.3228830.0063340.0000000.0694861.3987031.1778060.0000000.0000000.0434551.2212611.4570230.0000000.0000000.0508071.5078301.6972490.0220990.0000000.0737261.7930742.2217620.1466050.0000000.1279502.4963172.7145880.1652940.0000000.1621493.0420313.7990870.2345470.0000000.2537794.2874135.4575240.3491410.0000000.3728166.1794817.3460790.4720050.0000000.5170268.3351107.3169220.4573270.0000000.5305148.3047636.7827320.4244160.0000000.5296247.7367725.5050420.3758180.0000000.5145996.3954595.0561020.3480020.0000000.4926895.8967935.0616550.3614490.0000000.5024925.9255964.5808120.3200240.0000000.3968495.2976850.8465840.0379560.0000000.0663210.950861 -
Production , sum wellbores
Production , sum wellbores MonthGross - oil
[mill Sm3]Gross - gas
[bill Sm3]Gross - condensate
[mill Sm3]Gross - oil equivalents
[mill Sm3]Sum80.72748811.9748630.00000092.7023510.1525760.0608950.0000000.2134710.4168590.2404180.0000000.6572770.2323320.1267630.0000000.3590950.3500230.2512870.0000000.6013100.3981050.3151360.0000000.7132410.3621210.2777680.0000000.6398890.4418380.3356110.0000000.7774490.4802200.4387440.0000000.9189640.4946660.2878940.0000000.7825600.5291030.3081070.0000000.8372100.6932620.4250330.0000001.1182950.5912640.2308260.0000000.8220900.5694470.2138900.0000000.7833370.7801070.3505860.0000001.1306931.1820590.4525500.0000001.6346090.7912610.3308540.0000001.1221150.5825300.1265400.0000000.7090700.8701600.4566100.0000001.3267701.0212920.5188650.0000001.5401571.0716220.2423970.0000001.3140191.0312330.2020050.0000001.2332381.0697540.1894690.0000001.2592231.2170840.1140800.0000001.3311641.2703130.1295680.0000001.3998811.1634250.1341240.0000001.2975491.5164010.1416010.0000001.6580021.7677650.1497160.0000001.9174812.3490160.2200340.0000002.5690502.8058810.2502320.0000003.0561133.9664690.3331570.0000004.2996265.7047720.4647120.0000006.1694847.6572730.6120830.0000008.2693567.6442250.6016750.0000008.2459007.1235690.5647110.0000007.6882805.8596020.4894030.0000006.3490055.3979810.4459030.0000005.8438845.4212230.4547480.0000005.8759714.8359650.4103310.0000005.2462960.9146900.0765370.0000000.991227 -
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 datePurposeStatusContent04.07.197623.09.1976WILDCATSUSPENDEDOIL22.03.198429.04.1984WILDCATRE-CLASS TO DEVOIL05.04.197703.06.1977APPRAISALP&ADRY04.06.197706.09.1977APPRAISALP&AOIL SHOWS11.09.197712.12.1977APPRAISALSUSPENDEDOIL16.03.198420.03.1984APPRAISALP&AOIL10.04.198124.07.1981APPRAISALP&AOIL20.06.198826.07.1988APPRAISALP&AOIL14.05.198922.05.1989APPRAISALP&AOIL04.10.198823.12.1988APPRAISALSUSPENDEDOIL17.03.199014.05.1990APPRAISALSUSPENDEDOIL -
Wellbores – development
Wellbores – development Wellbore nameEntered dateCompleted datePurposeContent27.02.198813.05.1988PRODUCTIONOIL06.10.199108.11.1991PRODUCTIONOIL23.12.200007.02.2001PRODUCTIONOIL15.09.201419.11.2014PRODUCTIONOIL29.10.198620.12.1986PRODUCTIONOIL08.12.199520.12.1995PRODUCTIONOIL02.10.200530.11.2005PRODUCTIONOIL15.11.198720.01.1988INJECTIONWATER28.01.199017.03.1990INJECTIONWATER26.03.201010.05.2010PRODUCTIONOIL01.09.198804.11.1988INJECTIONWATER16.11.198824.01.1989INJECTIONWATER23.03.199518.06.1995PRODUCTIONOIL17.05.200526.05.2006PRODUCTIONOIL18.05.202131.05.2021PRODUCTIONOIL/GAS05.10.198628.10.1986PRODUCTIONOIL19.04.198714.02.1988PRODUCTIONOIL01.10.199623.10.1996PRODUCTIONOIL22.07.200013.09.2000PRODUCTIONOIL28.01.200204.03.2002INJECTIONGAS21.04.202011.05.2020PRODUCTIONOIL/GASPRODUCTION09.02.198928.03.1989INJECTIONWATER13.04.199420.06.1994INJECTIONWATER30.08.198908.10.1989PRODUCTIONOIL13.01.200613.03.2006INJECTIONWATER/GASINJECTION09.07.198620.09.1986PRODUCTIONOIL21.02.199718.04.1997PRODUCTIONOIL02.06.199312.12.1993INJECTIONWATER07.01.202027.03.2020INJECTIONWATER/GAS22.05.198823.07.1988OBSERVATIONOIL15.04.199031.05.1990PRODUCTIONOIL08.04.198919.06.1989INJECTIONNOT APPLICABLE04.11.198910.12.1989INJECTIONWATER19.10.201912.12.2019OBSERVATIONNOT APPLICABLE14.12.201927.12.2019INJECTIONWATER/GAS08.12.199213.02.1993PRODUCTIONOIL04.07.200110.08.2001PRODUCTIONOIL04.07.198919.08.1989PRODUCTIONOIL10.09.200915.10.2009PRODUCTIONOIL02.03.199301.05.1993PRODUCTIONOIL16.08.199517.09.1995PRODUCTIONOILPRODUCTIONNOT APPLICABLE05.04.199112.09.1991PRODUCTIONOIL16.06.200309.09.2003PRODUCTIONOIL07.12.200918.02.2010INJECTIONWATER/GAS11.01.198701.04.1987PRODUCTIONOIL -
Wellbores – other
Wellbores – other Wellbore nameEntered dateCompleted datePurposeStatus