30/11-3
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Generell informasjon
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Brønnhistorie
GeneralWell 30/11-3 was drilled in the Fensal sub-basin in an area east of the Frigg and Odin Fields in the North Sea. The primary objective was to test Middle Jurassic sandstones of the Brent Group and Early Jurassic sandstones of the Statfjord Group in a westward tilted horst block.The well is type well for the Hardråde Formation and reference well for the Svarte, Tryggvason and Kyrre formations.Operations and resultsWildcat well 30/11-3 was spudded with the semi-submersible installation Borgny Dolphin on 17 November 1982 and drilled to TD at 4662 m in the Early Jurassic Statfjord Group. When entering sandstones in the Statfjord Group at 4637 m the well kicked, probably due to overpressured gas. After efforts to stabilise the well the decision was made to abandon the well before a full evaluation of the Statfjord Group had been made. The well was drilled with spud mud down to 640 m, with KCl/polymer mud from 640 m to 3053 m, and with Drispac/lignosulphonate - gel/Resinex mud from 3053 m to TD.Well 30/11-3 encountered reservoir quality sands in the Tertiary (Frigg Formation and Heimdal Formation) and in the Jurassic (Brent Group and Statfjord Group). Oil saturations were seen in several thin sands in the Brent Group between 3434 m and 4025 m. Core and log evaluation indicated that these were probably due to residual oil only (saturations below a cut-off value of 50%). True oil shows were recorded intermittently only between 3434 m and 3600 m. Possible pay zones with reasonable porosity and permeability would be thin, with a net of only 13 m based on petrophysical evaluation. Log evaluation also indicated high gas saturations (up to more than 80%) in the Statfjord Group. However, due to the short penetration of this reservoir, the significance of this discovery could not be assessed and the hydrocarbon contact was not be established. The well penetrated an unexpected thickness of sealing Dunlin Group shales, which were considered positive for the Statfjord Group prospects.Two cores were cut in succession in the interval 3445 m to 3478 m with 100% recovery. RFT fluid samples were taken at 3454 m (water + trace oil) and 3667 m (water).The well was permanently abandoned on 14 March 1983 as a dry well with 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]260.004662.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13445.03459.8[m ]23460.03478.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]33.3Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1610.0[m]DCGEOCH1640.0[m]DCGEOCH1670.0[m]DCGEOCH1700.0[m]DCGEOCH1730.0[m]DCGEOCH1760.0[m]DCGEOCH1790.0[m]DCGEOCH1820.0[m]DCGEOCH1850.0[m]DCGEOCH1880.0[m]DCGEOCH1909.0[m]DCGEOCH1936.0[m]DCGEOCH1963.0[m]DCGEOCH1990.0[m]DCGEOCH2017.0[m]DCGEOCH2044.0[m]DCGEOCH2071.0[m]DCGEOCH2098.0[m]DCGEOCH2125.0[m]DCGEOCH2152.0[m]DCGEOCH2179.0[m]DCGEOCH2206.0[m]DCGEOCH2233.0[m]DCGEOCH2260.0[m]DCGEOCH2287.0[m]DCGEOCH2314.0[m]DCGEOCH2344.0[m]DCGEOCH2371.0[m]DCGEOCH2398.0[m]DCGEOCH2425.0[m]DCGEOCH2452.0[m]DCGEOCH2479.0[m]DCGEOCH2506.0[m]DCGEOCH2533.0[m]DCGEOCH2560.0[m]DCGEOCH2587.0[m]DCGEOCH2605.0[m]DCGEOCH2623.0[m]DCGEOCH3446.9[m]CSPT3449.9[m]CSPT3452.5[m]CSPT3459.2[m]CSPT3799.0[m]DCOD3808.0[m]DCOD -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1374991064202721722172220022052330260126012892316232393285328533173435401940194218427943244637 -
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]pdf0.17pdf0.38 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf2.34pdf7.73 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL1372003CBL VDL14403041CST00DLL MSFL GR30413798DLL MSFL GR46004659HDT30414475ISF BHC GR MSFL44004655ISF BHC GR SP1151994ISF BHC GR SP137639ISF BHC GR SP6271114ISF BHC GR SP19943052ISF BHC GR SP30413801ISF BHC GR SP34004473LDL CNL GR CAL1151994LDL CNL GR CAL235639LDL CNL GR CAL6271114LDL CNL GR CAL19943032LDL CNL NGS CAL30413802RFT34643754VELOCITY6393345 -
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 formasjonstestCONDUCTOR30236.036248.00.00LOTSURF.COND.20627.526640.01.23LOTINTERM.13 3/81994.017 1/22023.01.66LOTINTERM.9 5/83041.012 1/43053.01.83LOTOPEN HOLE4000.08 1/24662.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1481.06waterbased8701.16waterbased14501.17waterbased21901.21waterbased30501.40waterbased38001.31waterbased40001.30waterbased46621.60waterbased -
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]pdf0.23