1/6-2
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Generell informasjon
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Brønnhistorie
GeneralWell 1/6-2 was drilled between the Albuskjell and Flyndre Fields in the Feda Graben of the North Sea. The primary objective was to evaluate the Danian and Maastrichtian Chalk prospects (Ekofisk and Tor Formations) of a prominent diapiric domal structure. The well was placed on the flank of the structure.Operations and resultsWildcat well 1/6-2 was spudded with the jack-up installation Zapata Nordic on 28 November 1972 and drilled to TD at 3383 m in the Late Cretaceous Hod Formation. Some downtime recorded in the top hole was due to a defect 20" casing shoe and bad weather, otherwise operations went forth without significant problems. The maximum deviation down to 3226.6 m was 3.5 deg. The well was drilled with Sea water and viscous mud down to 460 m, with Shaletrol mud from 460 m to 2445 m, and with Unical mud from 2445 m to TD.In the Tertiary shale sequence potential reservoirs were limited to a few very thin (0.5 m or less) limestone or dolomite streaks. Top of the Chalk was encountered at 3024 m. The reservoir development in the Chalk was rather poor throughout, with the exception of a zone of ca 12 m in the Danian Ekofisk Formation having a porosity of about 26%. The Chalk formations were entirely water bearing as seen on the logs. However, weak hydrocarbon indications were observed in the Chalk (namely weak fluorescence and occasional slight oil staining), and relatively more abundant indications of oil staining and dead oil traces were recorded in the overlying Tertiary shales and interbedded carbonate layers.One core was cut from 3226.6 m to 3241.5 m in the Tor Formation. The core confirmed the generally dense nature of the Chalk in this section. No wire line fluid samples were taken.The well was permanently abandoned on 12 January 1973 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]182.883383.28 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet110584.810633.6[ft ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]14.9Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1051759289528952902290629513024302430903295 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.40 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.25 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf1.94pdf20.82 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]BGL5501530BGL15112550BHC GR151111077CBL39008000CNL980011113FDC980011113HDT40098035HDT800211108ISF402111106LL9800211101 -
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 formasjonstestCONDUCTOR30176.036176.00.00LOTSURF.COND.20460.026466.00.00LOTINTERM.13 3/81219.017 1/21226.00.00LOTINTERM.9 5/82439.012 1/42445.00.00LOTOPEN HOLE3383.08 1/23383.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1790.0060.011.0seawt/lign4660.0042.011.0seawt/lign12250.0037.010.0seawt/lign24440.0047.09.0seawt/lign33830.0048.013.0seawt/lign