15/8-1
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Generell informasjon
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Brønnhistorie
GeneralWildcat well 15/8-1 was drilled west of the Sleipner field, ca 2 km from the UK border. The well was designed to test possible hydrocarbon accumulation in the sandstones of middle Jurassic age.Operations and resultsWildcat well 15/8-1 was spudded with the semi-submersible installation Glomar Biscay II on 18 July 1981 and drilled to TD at 4300 m in the Middle Jurassic Fladen Group. Drilling operations were performed without significant problems in the 36", 26" and 17 1/2" holes. Pipe stuck in the 12 1/4" hole at 2254 m and several times in the 8 1/2" hole. Miscellaneous technical problems occurred while drilling the 6" hole and a gas kick was at 4265 m while tripping. The well was drilled with seawater and gel down to 500 m and with gypsum mud from 500 m to 2890 m. Lignosulphonate was added from 1570 m, and from 2890 m to TD the gypsum mud was gradually depleted and replaced with a gel/lignosulphonate mud.The well 15/8-1 proved gas and condensate in sandstone of Middle Jurassic age. The gas/water contact was indicated at 3698 m from the Formation Multi Tester. Oil shows were recorded from 3065 m to 3075 m in the Hod Formation. Five conventional cores were cut in the interval 3658 m to 3705.5 m in the Hugin Formation. Three samples were attempted taken during FMT runs. Due to technical malfunctions only 1 sample (from 3668 m) was obtained.The well was permanently abandoned on 7 January 1982 as a gas/condensate discovery.TestingOne drill stem test was performed in the Sleipner formation and three in the Hugin Formation. The procedure of the tests was similar; after initial flow and build up the well was flowed for approximately 660 min. producing gas/condensate. Test no. 4 was only flowed for 480 minutes. CO2 was produced in all tests, in concentrations ranging from 4% to 15%, and up to 8 ppm H2S was recorded in DST2. Two sets of PVT samples were taken at the separator during all 4 tests.DST1 from 4079 m to 4094 m in the Sleipner Formation produced 427000 Sm3 gas and 316 Sm3 condensate/day on a 19.1 mm choke. The gas/condensate ratio (CGR) was 1351 m3/m3. DST2 from 3911 m to 3926 m produced 486000 Sm3 gas and 399 Sm3 condensate/day on a 16.7 mm choke, the CGR was 1218 m3/m3. DST3 from 3688 m to 3697 m produced 657000 Sm3 gas and 408 Sm3 condensate/day on a 22.2 mm choke. The CGR was 1610 m3/m3. DST4 from 3643 m to 3653 m produced 550000 Sm3 gas and 290 Sm3 condensate/day on a 22.2 mm choke. The CGR was 1897 m3/m3. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]200.004298.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13658.03667.5[m ]23667.53678.6[m ]33678.83680.6[m ]43681.93699.0[m ]53699.03706.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]46.7Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie3500.0[m]DC3530.0[m]DC3539.0[m]DC3560.0[m]DC3566.0[m]DC3575.0[m]DC3590.0[m]DC3596.0[m]C3605.0[m]C3620.0[m]DC3629.0[m]C3629.0[m]DCOD3638.0[m]DC3641.0[m]DC3641.0[m]DCOD3650.0[m]DCOD3650.0[m]DC3658.2[m]COD3663.6[m]C3671.0[m]COD3676.0[m]C3676.3[m]COD3677.0[m]DC3680.0[m]DC3680.5[m]DCOD3682.2[m]DCOD3683.4[m]DC3685.5[m]DCOD3686.0[m]C3688.1[m]COD3688.8[m]C3690.2[m]COD3698.5[m]COD3700.4[m]C3710.0[m]DC3713.0[m]DC3719.0[m]DCOD3740.0[m]DCOD3740.0[m]DC3761.0[m]DCOD3770.0[m]DC3773.0[m]DC3779.0[m]DCOD3800.0[m]DCOD3800.0[m]DC3809.0[m]DCOD3815.0[m]C3821.0[m]DCOD3821.0[m]DCOD3830.0[m]DC3833.0[m]DC3839.0[m]DCOD3860.0[m]DCOD3860.0[m]DC3881.0[m]DCOD3890.0[m]DC3899.0[m]DC3920.0[m]DC3920.0[m]DCOD3920.0[m]DCRRI3941.0[m]DC3941.0[m]DCOD3950.0[m]DC3955.0[m]DCOD3980.0[m]DC4010.0[m]DC4010.0[m]DCRRI4040.0[m]DC4070.0[m]DC4100.0[m]DC4130.0[m]DC4160.0[m]DC4190.0[m]DC4220.0[m]DC4250.0[m]DC4280.0[m]DC4298.0[m]DC -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTTEST23911.003926.00WATER17.12.1981 - 00:00YESDSTTEST33688.003697.0024.12.1981 - 00:00YESDSTTEST43643.003653.0029.12.1981 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet137879108813591926222523652365241824632510267527272825283028302841299832373335343634363445345235353535360536433643394541624162 -
Geokjemisk informasjon
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Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.18pdf0.32 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf9.87pdf0.67pdf1.71pdf2.67pdf0.29pdf15.68pdf3.69pdf4.53pdf2.11pdf3.73pdf1.56pdf1.50pdf1.42pdf0.81pdf2.41pdf6.52pdf7.26pdf4.27pdf1.54pdf2.64pdf0.44pdf3.98pdf3.14pdf2.84pdf0.30pdf1.56pdf1.49pdf1.45pdf9.34pdf5.54pdf1.69pdf3.94pdf1.13 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.04079408519.12.03911392616.73.03688369722.24.03543365322.2Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.02.03.04.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.03164270000.7540.85113512.03994860000.8110.94412183.04086570000.8460.84016104.02905500000.7990.8321897 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL27003980CBL VDL39124265CDL CNL11252883CDL CNL28623982CDL CNL32123703CDL CNL39754301COREGUN28623982COREGUN39754302DIPLOG28623892DIPLOG39754302DLL MLL35853982DLL MLL39754301IEL AC160513IEL AC4901199IEL AC11252883IEL AC28403703IEL AC35853982IEL AC39654230IEL AC41504301MFT28623982MFT239754302TEMP1801152TEMP2402844VELOCITY5253980 -
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 formasjonstestCONDUCTOR30187.036187.00.00LOTSURF.COND.20500.026515.01.71LOTINTERM.13 3/81185.017 1/21200.01.93LOTINTERM.9 5/82874.012 1/42890.01.75LOTLINER73990.08 1/23991.02.13LOTLINER4 1/24296.064300.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2071.03seawater11611.12seawater13871.10seawater24001.19waterbased25821.24waterbased36581.38waterbased39911.38waterbased41471.36waterbased -
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