2/1-2
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Generell informasjon
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Brønnhistorie
GeneralWell 2/1-2 is located on the Sørvestlandet High, ca 6 km northwest of the Gyda Field in The North Sea. The objective was to test possible Late Jurassic sands within a salt-induced structural high.The well is Reference Well for the Mandal and Ula Formations.Operations and resultsWildcat well 2/1-2 was spudded with the semi-submersible installation Nordskald on 14 December 1977 and drilled to TD at 3555 m, 15 m into Late Permian Zechstein anhydrite. The well was drilled with seawater and gel down to 174 m, with Lime Drispac from 174 m to 3135 m, and with Lignosulphonate from 3551 m to TD.Fifty-two meter of Maureen Formation was encountered at 2692 m, directly overlying the Tor Formation at 2743.5 m. The Cromer Knoll Group came in at 3121.5 m, and top Jurassic shales (Mandal Formation), at 3299 m. The Mandal Formation was seen as a potentially excellent source rock for major oil, but was marginally mature on-structure. The well penetrated water-bearing Late Jurassic sandstone (Ula Formation) at a depth of 3316 m. The sandstone was 30.5 m thick and had porosities of less than 10% and permeabilities less than 1 md. The well then penetrated 37.5 m of argillaceous Middle Jurassic sandstone and 156 m of interbedded Triassic sandstones and siltstones with occasional mudstones. No shows were observed in the well while drilling.One full hole core was cut within the Ula Formation sandstone from 3318 to 3336 m. No wire line fluid samples were taken.The well was permanently abandoned on 26 February 1978 as a dry well.TestingNo drill stem test was performed. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?NOBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]180.003551.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13318.03336.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]18.2Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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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 formasjonstestCONDUCTOR30169.036174.00.00LOTSURF.COND.20557.026562.00.00LOTINTERM.13 3/82226.017 1/22231.00.00LOTINTERM.9 5/83138.012 1/43140.00.00LOTOPEN HOLE3551.08 1/23551.00.00LOT -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CDM31323285CDM AP31513274CDM PP31463274FDC CNL24453555ISF SONIC903555TEMP14132350 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet941624252425242581260326922744274430153122312232993299331633163347338433843540 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.53 -
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]pdf13.56 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.21pdf0.07 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1740.00sea water3100.00spud mud7741.4043.0waterbased13031.4143.0waterbased21041.5052.0waterbased24821.4949.0waterbased26721.4849.0waterbased28531.5250.0waterbased32771.4952.0waterbased35501.5648.0waterbased -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie3314.0[m]DC3318.0[m]CAPT3318.9[m]CAPT3319.8[m]CAPT3320.7[m]CAPT3321.6[m]CAPT3322.5[m]CAPT3323.0[m]DC3323.4[m]CAPT3324.3[m]CAPT3325.2[m]CAPT3326.1[m]CAPT3327.0[m]CAPT3327.9[m]CAPT3328.8[m]CAPT3329.7[m]CAPT3330.6[m]CAPT3331.5[m]CAPT3332.0[m]DC3332.4[m]CAPT3333.3[m]CAPT3334.2[m]CAPT3335.1[m]CAPT3336.0[m]CAPT3344.0[m]DC3362.0[m]DC -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet3331.60[m ]