30/7-8
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Generell informasjon
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Brønnhistorie
GeneralWell 30/7-8 was drilled in the Norwegian part of the Shetland Basin. The primary objective was to test the hydrocarbon potential in the Middle Jurassic Brent group, which had previously proved gas and condensate bearing in wells 30/4-2 and 30/7-6. The Early Jurassic Cook Formation and Statfjord Group were secondary targets. The planned TD was 4600 m in the Triassic Red Beds.Operations and resultsAppraisal well 30/7-8 was spudded with the semi-submersible installation Treasure Seeker on 19 November 1980 and drilled to 4287 m in the Middle Jurassic Brent Group . The drill pipe became differentially stuck at 4069 m. After unsuccessful fishing, the well was suspended with top of the fish at 4058 m, and 4287 m became official TD for the well. The well was drilled with seawater and hi-vis pills down to 215 m, with water based "lost circulation mud" from 215 m to 962 m, with gypsum/lignosulphonate mud from 962 m to 2648 m, with a bentonite/lignosulfonate/lignite mud type from 2648 m to TD.Frequent traces of oil shows were described in many intervals from 1820 m and down to well TD. Most of the shows occurred in limestone stringers and were rated poor. The primary target Middle Jurassic (Bathonian-Bajocian) Brent Group reservoir was encountered at 4066 m. The shows in the Brent Group sandstones were rated good.Five cores were cut in the well. One was cut in the Draupne Formation from 3888.5 m, while the other four were cut in the Brent Group reservoir section from 4082.3 m to 4129.3 m. No fluid sample was taken.The well was suspended on 4 April 1980 as a gas/condensate appraisal well.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]220.004813.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13888.53898.4[m ]24082.34096.0[m ]34100.84107.6[m ]44111.04125.7[m ]54126.04128.9[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]48.0Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1250.0[m]DCGEOCH1280.0[m]DCGEOCH1310.0[m]DCGEOCH1340.0[m]DCGEOCH1370.0[m]DCGEOCH1400.0[m]DCGEOCH1430.0[m]DCGEOCH1460.0[m]DCGEOCH1490.0[m]DCGEOCH1520.0[m]DCGEOCH1550.0[m]DCGEOCH1580.0[m]DCGEOCH1610.0[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]DCGEOCH1910.0[m]DCGEOCH1940.0[m]DCGEOCH1970.0[m]DCGEOCH2000.0[m]DCGEOCH2030.0[m]DCGEOCH2060.0[m]DCGEOCH2090.0[m]DCGEOCH2120.0[m]DCGEOCH2150.0[m]DCGEOCH2180.0[m]DCGEOCH2210.0[m]DCGEOCH2240.0[m]DCGEOCH2270.0[m]DCGEOCH2300.0[m]DCGEOCH2330.0[m]DCGEOCH2340.0[m]DCGEOCH2350.0[m]DCGEOCH2980.0[m]DCIKU2990.0[m]DCIKU3160.0[m]DCIKU3170.0[m]DCIKU3315.0[m]DCIKU3365.0[m]DCIKU3385.0[m]DCIKU3405.0[m]DCIKU3425.0[m]DCIKU3445.0[m]DCIKU3465.0[m]DCIKU3485.0[m]DCIKU3490.0[m]DCIKU3495.0[m]DCIKU3500.0[m]SWCIKU3505.0[m]DCIKU3520.0[m]DCIKU3525.0[m]SWCIKU3534.0[m]SWCIKU3540.0[m]DCIKU3543.0[m]SWCIKU3560.0[m]DCIKU3567.0[m]SWCIKU3570.0[m]DCIKU3573.0[m]DCIKU3576.0[m]SWCIKU3586.0[m]SWCIKU3592.0[m]SWCIKU3597.0[m]SWCIKU3600.0[m]DCIKU3603.8[m]SWCIKU3616.0[m]SWCIKU3617.0[m]SWCIKU3620.0[m]DCIKU3634.0[m]SWCIKU3640.0[m]DCIKU3647.8[m]SWCIKU3659.0[m]SWCIKU3660.0[m]DCIKU3667.0[m]SWCIKU3670.0[m]DCIKU3670.0[m]SWCIKU3676.0[m]SWCIKU3678.0[m]DCIKU3679.0[m]SWCIKU3680.0[m]DCIKU3692.0[m]DCIKU3695.0[m]SWCIKU3697.0[m]SWCIKU3698.0[m]DCIKU3705.0[m]DCIKU3705.0[m]SWCIKU3708.0[m]DCIKU3710.0[m]SWCIKU3715.0[m]SWCIKU3718.0[m]DCIKU3718.0[m]SWCIKU3728.0[m]SWCIKU3728.0[m]DCIKU3734.0[m]SWCIKU3741.0[m]DCIKU3741.0[m]SWCIKU3763.0[m]DCIKU3783.0[m]DCIKU3795.0[m]SWCIKU3800.0[m]SWCIKU3800.0[m]DCIKU3805.0[m]DCIKU3808.0[m]DCIKU3810.0[m]DCIKU3813.8[m]DCIKU3815.0[m]DCIKU3820.0[m]DCIKU3825.0[m]DCIKU3830.0[m]DCIKU3830.0[m]SWCIKU3835.0[m]DCIKU3838.5[m]SWCIKU3840.0[m]DCIKU3841.0[m]SWCIKU3845.5[m]SWCIKU3862.0[m]SWCIKU3863.0[m]DCIKU3870.0[m]SWCIKU3875.0[m]SWCIKU3888.8[m]CIKU3889.4[m]CIKU3891.8[m]CIKU3892.0[m]CSNEA3893.5[m]CIKU3896.2[m]CIKU3897.3[m]CIKU3915.0[m]SWCIKU3920.0[m]DCIKU3940.0[m]DCIKU3940.0[m]SWCIKU3946.0[m]SWCIKU3960.0[m]DCIKU3960.0[m]SWCIKU3980.0[m]DCIKU3994.0[m]SWCIKU3999.0[m]SWCIKU4000.0[m]DCIKU4000.0[m]SWCIKU4015.0[m]SWCIKU4020.0[m]DCIKU4035.0[m]SWCIKU4040.0[m]DCIKU4055.0[m]DCIKU4063.0[m]DCIKU4068.0[m]DCIKU4082.3[m]CIKU4087.5[m]CIKU4096.0[m]CIKU4105.6[m]CIKU4111.3[m]CSNEA4112.0[m]CSNEA4114.9[m]CSNEA4115.2[m]CIKU4118.6[m]CSNEA4121.4[m]CIKU4123.0[m]DCIKU4123.3[m]CSNEA4127.9[m]CIKU4143.0[m]DCIKU4163.0[m]DCIKU4175.0[m]DCIKU4188.0[m]DCIKU4208.0[m]DCIKU4228.0[m]DCIKU4250.0[m]DCIKU4268.0[m]DCIKU4275.0[m]DCIKU4285.0[m]DCIKU -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet128442970178219271927195220202090227523283799380738074066 -
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 formatDokument størrelse [KB]pdf0.10 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokument størrelse [KB]pdf3.26pdf28.57pdf28.57 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CST9604052CYBERDIP26334049DIR37214189FDC CNL9604170HDT26334049ISF SON2154187ISF SON FDC CNL9612646MWD TELECO36293736RFT40674068TEMP1253726VELOCITY9704050 -
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 formasjonstestCONDUCTOR30215.036215.00.00LOTSURF.COND.20962.0261011.01.52LOTINTERM.13 3/82633.017 1/22648.01.83LOTINTERM.8 5/83726.012 1/43741.02.08LOTOPEN HOLE4287.08 3/84287.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling9521.40Waterbased10171.08Waterbased15721.12Waterbased23461.26Waterbased26481.40Waterbased26541.51Waterbased32051.63Waterbased35761.40Waterbased36111.69Waterbased36762.03Waterbased37411.76Waterbased38072.03Waterbased38881.96Waterbased40382.04Waterbased40821.99Waterbased40942.09Waterbased45892.04Waterbased48122.04Waterbased -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet4067.50[m ]4079.15[m ]4064.50[m ] -
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 formatDokument størrelse [KB]pdf0.18