6/3-1
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Generell informasjon
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Brønnhistorie
GeneralWildcat well 6/3-1 was drilled on the Pi-structure in the northwestern part of the block. The well is situated less than 1 km from the UK-Norwegian median line, where the UK Drake Field, an oil/gas field in UK block 2215was discovered close to the median line. Well 6/3-1 was designed to test possible hydrocarbon accumulations at different levels. The main target was Jurassic and Triassic sandstones. Secondary targets were Paleocene sandstones (Heimdal Formation), and Late Cretaceous porous/fractured chalk.Operations and resultsThe well was spudded with the semi-submersible installation Deepsea Bergen 2 November 1984 and drilled to TD at 3560 m in the Triassic Skagerrak Formation. Drilling of the well proceeded without significant problems, but five and a half rig days were spent waiting on weather. The well was drilled with gel/seawater to 520 m, with gypsum/polymer from 520 m to 2926 m, and with lignite/lignosulphonate from 2926 m to TD.Target reservoir sandstones of Jurassic/Triassic age came in at 2965 m with oil and gas/condensate. A hydrocarbon column of 72 m was proven with oil/water contact at 3037 m. FMT gradients and oil stain on cores indicated a GOC at 3013 m. Secondary target sand (Heimdal Formation) was not found. Logs and shows indicated hydrocarbons in Late Cretaceous chalk/limestone, most strongly from 2900 m to 2925 m, but test of this interval was negative. FMT pressure measurements in the larger interval from 2804 m to 2918.5 m in the chalk were all unsuccessful and showed a tight formation. Eight cores were cut in the well from 2968 m to 3116.5 m. Segregated FMT samples were taken at 3021.5 m (0.87 g/cm3-oil and gas), at 3007.5 m (0.780 g/cm3-condensate, gas, and mud filtrate), at 3016 m (oil, mud filtrate, and gas), at 2992 m (0.77 g/cm3-condensate, mud filtrate, and gas), at 2998.5 m (condensate and gas), and at 2966 m (0.77 g/cm3-condensate, mud filtrate, and gas).The well was permanently abandoned as an oil and gas discovery on 2 January 1985.TestingThree Drill Stem Tests were performed. DST 1 at 3015 m to 3023 m produced 907.5 m3 oil/day and 140 700 Sm3 gas/day on a 64/64" choke and wellhead pressure equal to 51.7 bar. CO2 content in the gas was 2.2 % and H2S content was 1.1 ppm. DST 2 at 2978 m to 2993 m produced 409.4 m3 oil/day and 889 900 Sm3 gas/day on a 72/64" choke and wellhead pressure equal to 95.8 bar. CO2 content in the gas was 2.0 % and H2S content was 2.0 ppm. DST 3 at 2902-2921 m was opened up on a 12/64" choke. It gave no response from the well. Acid was pumped to stimulate flow, but only 2.6 m3 diesel cushion was produced before the well died. Mud with traces of oil was recovered when reversing out the string volume above the circulating valve. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]180.003560.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12967.02985.3[m ]22986.02987.7[m ]32988.03006.7[m ]43007.03024.9[m ]53025.03043.0[m ]63043.03061.6[m ]73061.63089.0[m ]83089.03116.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]148.1Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2410.0[m]DC2445.0[m]DC2475.0[m]DC2507.5[m]SWC2537.5[m]SWC2567.5[m]SWC2602.5[m]SWC2640.0[m]DC2960.0[m]DCSTATOIL2965.0[m]DCSTATOI2969.5[m]C2970.0[m]DCSTATOIL2975.0[m]DCSTATOI2980.0[m]DCSTATOI2980.7[m]C2985.0[m]DCSTATOIL2986.8[m]C2987.5[m]C2988.3[m]C2990.0[m]DCSTATOIL2995.0[m]DCSTATOI2996.4[m]C3000.0[m]DCSTATOIL3004.4[m]C3007.0[m]DCSTATOIL3011.5[m]SWC3012.5[m]SWCSTATOIL3020.0[m]DCSTATOI3022.7[m]C3027.5[m]SWCSTATOIL3028.5[m]SWC3032.5[m]SWCSTATOIL3037.0[m]DCSTATOI3043.5[m]SWC3045.0[m]DCSTATOIL3057.5[m]SWCSTATOI3065.0[m]DCSTATOI3400.0[m]DCSTATOI3410.0[m]DCSTATOI3420.0[m]DCSTATOI3430.0[m]DCSTATOI3450.0[m]DCSTATOI3460.0[m]DCSTATOI3470.0[m]DCSTATOI3480.0[m]DCSTATOI3490.0[m]DCSTATOI3500.0[m]DCSTATOI3510.0[m]DCSTATOI3520.0[m]DCSTATOI3530.0[m]DCSTATOI3540.0[m]DCSTATOI3550.0[m]DCSTATOI3560.0[m]DCSTATOI -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTTEST13023.003015.0008.01.1985 - 00:00YESDSTTEST22993.002978.0015.01.1985 - 22:30YESDSTTEST32921.002902.0021.01.1985 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet109118324352435244925362637267326732679274429222922295029632963296529782978 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.54 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf6.74 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.26pdf0.26 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf13.18pdf1.98 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.03015302319.51.13015302325.42.02978299325.43.0290229210.0Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.01.12.036.00012.00035.0003.039.000Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.07651210000.8601581.19071410000.8601552.04098899000.76821763.0 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]ACBL VDL GR1101600ACBL VDL GR10012885ACBL VDL GR27003052CDL CNL GR CAL15992925CDL CNL GR CAL28843558CDL CNL GR CAL SP28853114CDL GR CAL5011627DIFL BHC AC GR SP CAL1103559DIPLOG24403559DLL ML26003115DLWD16323560FMT28042902FMT29663106VELOCITY8303560 -
Foringsrør og formasjonsstyrketester
Foringsrør og formasjonsstyrketester Type utforingUtforing diam.
[tommer]Utforing dybde
[m]Brønnbane diam.
[tommer]Brønnbane dyp
[m]LOT/FIT slam eqv.
[g/cm3]Type formasjonstestCONDUCTOR30170.036175.00.00LOTSURF.COND.20502.026520.01.37LOTINTERM.13 3/81600.017 1/21630.01.79LOTINTERM.9 5/82889.012 1/42926.01.70LOTLINER73560.08 1/23560.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1371.04130.024.0WATER BASED05.11.19841721.0444.016.0WATER BASED05.11.19841751.0648.016.0WATER BASED05.11.19845201.0942.013.0WATER BASED06.11.19845201.1041.013.0WATER BASED07.11.19845201.1041.013.0WATER BASED07.11.19846861.1249.011.5WATER BASED12.11.19849281.1451.011.5WATER BASED12.11.198410501.1451.011.5WATER BASED12.11.198412251.1551.011.5WATER BASED12.11.198414561.1461.012.4WATER BASED13.11.198416301.1562.012.4WATER BASED14.11.198416301.2157.09.0WATER BASED19.11.198416301.2157.09.0WATER BASED19.11.198417001.2061.07.0WATER BASED22.11.198418481.2064.09.0WATER BASED22.11.198421561.1846.07.0WATER BASED23.11.198425551.2048.09.0WATER BASED26.11.198426301.2152.011.0WATER BASED26.11.198426561.2147.011.0WATER BASED27.11.198427571.2046.09.6WATER BASED29.11.198428701.2044.09.0WATER BASED30.11.198429261.3545.07.7WATER BASED03.12.198429681.45WATER BASED11.12.198430211.4554.06.0WATER BASED25.01.198530661.3560.06.0WATER BASED02.01.198531171.4057.06.0WATER BASED17.12.198434541.4054.07.2WATER BASED27.12.198435601.3853.06.2WATER BASED27.12.1984 -
Trykkplott
Trykkplott Porertrykksdataene kommer fra logging i brønnen hvis ingen annen kilde er oppgitt. I noen brønner der trykk ikke er logget, er det brukt informasjon fra formasjonstester eller brønnspark. Trykkdataene er rapportert inn til Oljedirektoratet og videre prosessert og kvalitetssikret av IHS Markit.Trykkplott Dokument navnDokument formatDokumentstørrelse [MB]pdf0.22