31/2-19 S
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Generell informasjon
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Brønnhistorie
GeneralWell 31/2-19 S is located in the Troll West area some few kilometres to the northwest of the Troll Field. It was drilled to test the hydrocarbon potential of the "S-structure". The primary targets were the Jurassic Sognefjord and Fensfjord Formations, and the Brent Group. Secondary targets were the Paleocene (Lista Formation), the Dunlin Group and the Statfjord Formation.Operations and resultsExploration well 31/2-19 S was spudded with the semi-submersible installation "West Vanguard" on 8 May and drilled to TD at 4114 m (3669 m TVD RKB) in the Early Jurassic Statfjord Formation The well was drilled with seawater and hi-vis bentonite sweeps down to 1316 m and with KCl/PHPA polymer mud from 1316 m to TD.The well encountered 131 m of Intra Lista Formation sandstone, and a 30-40 m sandy interval of poor reservoir quality in the Cretaceous Rødby Formation. Two of the primary prospective levels, the Sognefjord and Fensfjord Formations of the Viking Group were not deposited; instead more than 700 m with the distal Heather formation was penetrated. The Brent Group and Dunlin Group sandstones, and the Statfjord Formation were encountered according to the prognosis. The well was found to be dry (no moveable hydrocarbons) with only weak hydrocarbon shows observed in the Intra Lista Formation sandstone and in sandstones of the Viking and Brent Groups.Five cores were cut, two of them in the Lista Formation, the third in the Rødby Formation, and the last two ones in the Heater Formation. Pressure points were obtained by the HP gauge of the RFT tool. In the Lista Sandstone, a water gradient of 0.99 g/cc was found. In the Cretaceous, no gradient could be defined due to only tight points. In the Brent Group (the Ness and Etive formation equivalents) a water gradient of 1.01 g/cc was found. In the Dunlin Group three good RFT points were achieved. The two deepest ones (in the Amundsen Formation) indicated a water gradient of 0.98 g/cc. No fluid samples were taken. The well was permanently abandoned on 13 July as a dry well with weak shows.TestingNo drill stem test was performed. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1320.004114.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11745.01748.4[m ]21748.41755.6[m ]32515.62517.2[m ]43190.03190.9[m ]53196.03214.8[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]31.9Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1320.0[m]DCRRI1340.0[m]DCRRI1360.0[m]DCRRI1380.0[m]DCRRI1400.0[m]DCRRI1420.0[m]DCRRI1440.0[m]DCRRI1460.0[m]DCRRI1480.0[m]DCRRI1500.0[m]DCRRI1520.0[m]DCRRI1521.0[m]DCRRI1560.0[m]SWCRRI1580.0[m]DCRRI1600.0[m]DCRRI1610.0[m]DCRRI1620.0[m]DCRRI1625.0[m]SWCRRI1632.0[m]SWCRRI1637.0[m]SWCRRI1650.0[m]DCRRI1660.0[m]DCRRI1678.0[m]SWCRRI1699.0[m]SWCRRI1710.0[m]DCRRI1719.0[m]SWCRRI1730.0[m]DCRRI1740.0[m]DCRRI1750.0[m]DCRRI1761.0[m]SWCRRI1770.0[m]DCRRI1780.0[m]DCRRI1792.0[m]SWCRRI1800.0[m]DCRRI1812.0[m]SWCRRI1830.0[m]SWCRRI1855.0[m]SWCRRI1861.0[m]SWCRRI1967.0[m]SWCRRI1982.0[m]SWCRRI2017.0[m]SWCRRI2035.0[m]SWCRRI2059.0[m]SWCRRI2075.0[m]SWCRRI2099.0[m]SWCRRI2120.0[m]SWCRRI2125.0[m]SWCRRI2130.0[m]SWCRRI2147.0[m]SWCRRI2180.0[m]SWCRRI2230.0[m]SWCRRI2276.0[m]SWCRRI2297.0[m]SWCRRI2300.0[m]DCRRI2315.0[m]SWCRRI2340.0[m]SWCRRI2380.0[m]SWCRRI2400.0[m]DCRRI2416.0[m]SWCRRI2433.0[m]SWCRRI2450.0[m]DCRRI2462.0[m]SWCRRI2472.0[m]SWCRRI2478.0[m]SWCRRI2500.0[m]DCRRI2540.0[m]DCRRI2600.0[m]DCRRI2620.0[m]DCRRI2630.0[m]DCRRI2640.0[m]SWCRRI2650.0[m]DCRRI2658.0[m]SWCRRI2660.0[m]DCRRI2670.0[m]DCRRI2682.0[m]SWCRRI2690.0[m]DCRRI2703.0[m]SWCRRI2710.0[m]SWCRRI2720.0[m]DCRRI2725.0[m]SWCRRI2733.0[m]SWCRRI2740.0[m]SWCRRI2750.0[m]SWCRRI2760.0[m]SWCRRI2772.0[m]SWCRRI2780.0[m]DCRRI2790.0[m]SWCRRI2800.0[m]DCRRI2810.0[m]DCRRI2814.0[m]DCRRI2820.0[m]DCRRI2830.0[m]DCRRI2840.0[m]DCRRI2850.0[m]DCRRI2860.0[m]DCRRI2870.0[m]DCRRI2875.0[m]DCRRI2880.0[m]DCRRI2890.0[m]DCRRI2898.0[m]DCRRI2900.0[m]DCRRI2910.0[m]DCRRI2920.0[m]DCRRI2930.0[m]DCRRI2940.0[m]DCRRI2942.0[m]DCRRI2950.0[m]DCRRI2960.0[m]DCRRI2970.0[m]DCRRI2972.0[m]DCRRI2980.0[m]DCRRI2983.0[m]DCRRI2990.0[m]DCRRI3000.0[m]DCRRI3010.0[m]DCRRI3020.0[m]DCRRI3030.0[m]DCRRI3032.0[m]DCRRI3042.0[m]DCRRI3050.0[m]DCRRI3060.0[m]DCRRI3070.0[m]DCRRI3080.0[m]DCRRI3090.0[m]DCRRI3100.0[m]DCRRI3110.0[m]DCRRI3130.0[m]SWCRRI3140.0[m]DCRRI3150.0[m]SWCRRI3160.0[m]DCRRI3170.0[m]SWCRRI3178.0[m]SWCRRI3218.0[m]SWCRRI3226.0[m]SWCRRI3244.0[m]SWCRRI3256.0[m]SWCRRI3260.0[m]SWCRRI3271.0[m]SWCRRI3280.0[m]DCRRI3304.0[m]SWCRRI3311.0[m]SWCRRI3321.0[m]SWCRRI3330.0[m]DCRRI3339.0[m]SWCRRI3340.0[m]DCRRI3350.0[m]SWCRRI3362.0[m]SWCRRI3379.0[m]SWCRRI3391.0[m]SWCRRI3400.0[m]DCRRI3408.0[m]SWCRRI3421.0[m]SWCRRI3429.0[m]SWCRRI3440.0[m]DCRRI3450.0[m]DCRRI3458.0[m]SWCRRI3470.0[m]DCRRI3478.0[m]SWCRRI3495.0[m]SWCRRI3500.0[m]DCRRI3510.0[m]DCRRI3520.0[m]DCRRI3530.0[m]DCRRI3540.0[m]DCRRI3550.0[m]DCRRI3552.0[m]SWCRRI3562.0[m]SWCRRI3567.0[m]SWCRRI3589.0[m]SWCRRI3600.0[m]DCRRI3610.0[m]DCRRI3621.0[m]SWCRRI3630.0[m]DCRRI3646.0[m]SWCRRI3658.0[m]SWCRRI3670.0[m]DCRRI3683.0[m]SWCRRI3690.0[m]DCRRI3700.0[m]DCRRI3710.0[m]DCRRI3720.0[m]DCRRI3728.0[m]SWCRRI3756.0[m]SWCRRI3770.0[m]DCRRI3786.0[m]SWCRRI3800.0[m]DCRRI3820.0[m]DCRRI3840.0[m]DCRRI3867.0[m]SWCRRI3892.0[m]SWCRRI3900.0[m]DCRRI3920.0[m]DCRRI3939.0[m]SWCRRI3960.0[m]DCRRI3980.0[m]DCRRI3990.0[m]SWCRRI4000.0[m]DCRRI4020.0[m]DCRRI4040.0[m]DCRRI4060.0[m]DCRRI4075.0[m]SWCRRI4100.0[m]DCRRI4114.0[m]DCRRI -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet36784015851585163316941834196519832126212622502466249724972534256025772577273834683632363237494059 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.71 -
Geokjemisk informasjon
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Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf24.02 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CST GR15602075CST GR20993070CST GR31504070DLL MSFL DSI LDL SNL NGT AMS SP12703100DLL MSFL LDL CNL BHC NGT AMS SP29704111FMS GR AMS30874107FMS MSFL GR AMS13093098MSFL GR AMS26702850MWD - GR RES DIR3664100RFT GR AMS17642496RFT GR AMS18702471RFT GR AMS31783922VSP12903090VSP29804090 -
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 formasjonstestCONDUCTOR30428.536428.50.00LOTINTERM.13 3/81316.017 1/21316.00.00LOTINTERM.9 5/83118.012 1/43118.00.00LOTOPEN HOLE4114.08 1/24114.01.64LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4281.20WATER BASED13161.06WATER BASED15041.2513.0WATER BASED17451.2514.0WATER BASED17481.2520.0WATER BASED21641.2620.0WATER BASED25181.2621.0WATER BASED26201.2521.0WATER BASED29171.2524.0WATER BASED29201.25WATER BASED31181.3024.0WATER BASED31961.3020.0WATER BASED32031.3019.0WATER BASED34531.3018.0WATER BASED41141.3017.0WATER BASED -
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]pdf0.24