25/9-1
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Generell informasjon
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Brønnhistorie
GeneralWell 25/9-1 is located East of the Jotun area and Southwest of the small 25/6-1 Discovery. Well 25/9-1 was drilled to test the hydrocarbon potential of Middle Jurassic Hugin Formation sandstones (Rummel prospect) with sandstones of the Lower Palaeocene Ty Formation as a secondary target.Operations and resultsWildcat well 25/9-1 was spudded with the semi-submersible "Vildkat Explorer" 28 March 1995 and drilled to a total depth of 2525 m as prognosed, 110.5 m into sediments of the Late Triassic Smith Bank Formation. The well was drilled with bentonite / sea water down to 1056 m and with "Anco 2000" mud with ca 3% "Anco 208" glycols from 1056 m to TD.No shallow gas or boulder beds were encountered in the uppermost well section. The well penetrated mainly clays and claystones in the Nordland, Hordaland and Rogaland groups. A clean Quaternary sandstone was seen between 275 and 319 m. The Utsira (754.5 m - 1000 m) and Skade (1284.5 m -1344.5 m) Formation sandstones were also present. Top Våle Formation was reached at 2030.5 m but no Ty Formation sands were present and the lithology consisted mainly of limestones and chalk, which continued down to top Shetland Group at 2043.5 m. The Shetland Group consisted mainly of chalk with the Cromer Knoll Group consisting of limestones interbedded with clay stones and marls. The Hugin Formation sandstones came in as prognosed at 2184.5 m and were found to be water bearing. One 11.5 metre core was cut. The core showed excellent reservoir parameters.No hydrocarbons were found in the Våle Formation. Weak shows were seen in drilled cuttings from two intervals; the Lista Formation from 1951 m to 2017 m and in the Draupne and Heather formations from 2167 to 2184.5 m and in a number of sidewall cores recovered from wire line log run 2F, interval 1988 m to 2413 m. Post well organic geochemical analysis confirmed traces of migrated hydrocarbons present in the interval 2180 m - 2183 m (Heather Formation). Except from the above mentioned shows, MWD and wire line log responses did not indicate any presence of hydrocarbons throughout the well. No fluid samples were taken in the well. The well was permanently abandoned as dry well 22 April 1995.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]1060.002525.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12183.02194.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]11.5Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1272.0[m]SWCRRI1366.5[m]SWCRRI1435.0[m]SWCRRI1665.0[m]SWCRRI1743.1[m]SWCRRI1760.0[m]DCRRI1770.0[m]DCRRI1785.5[m]SWCRRI1799.0[m]SWCRRI1810.0[m]DCRRI1818.5[m]SWCRRI1824.5[m]SWCRRI1829.8[m]SWCRRI1835.0[m]SWCRRI1840.0[m]DCRRI1850.5[m]SWCRRI1860.0[m]DCRRI1870.0[m]DCRRI1880.0[m]DCRRI1882.0[m]SWCRRI1892.5[m]SWCRRI1899.8[m]SWCRRI1900.0[m]DCRRI1910.0[m]SWCRRI1915.5[m]SWCRRI1923.2[m]SWCRRI1939.0[m]SWCRRI1942.9[m]SWCRRI1950.0[m]DCRRI1960.0[m]DCRRI1970.0[m]DCRRI1988.0[m]SWCRRI2001.0[m]DCRRI2013.5[m]SWCRRI2015.5[m]SWCRRI2019.0[m]DCRRI2030.0[m]SWCRRI2039.0[m]SWCRRI2041.0[m]SWCRRI2043.0[m]DCRRI2044.0[m]SWCRRI2055.0[m]DCRRI2070.0[m]DCRRI2074.5[m]SWCRRI2079.5[m]SWCRRI2100.0[m]DCRRI2109.0[m]DCRRI2114.0[m]SWCRRI2118.0[m]DCRRI2130.0[m]DCRRI2145.0[m]DCRRI2154.0[m]DCRRI2157.0[m]DCRRI2160.0[m]DCRRI2163.0[m]DCRRI2165.5[m]SWCRRI2168.0[m]SWCRRI2174.5[m]SWCRRI2177.0[m]SWCRRI2181.0[m]SWCRRI2183.0[m]CRRI2185.5[m]SWCRRI2187.2[m]CRRI2189.3[m]CRRI2190.0[m]SWCRRI2192.8[m]CRRI2193.5[m]CRRI2194.5[m]CRRI2212.5[m]SWCRRI2226.0[m]DCRRI2241.0[m]DCRRI2268.0[m]DCRRI2283.0[m]DCRRI2286.8[m]SWCRRI2299.5[m]SWCRRI2302.0[m]SWCRRI2322.0[m]DCRRI2332.0[m]SWCRRI2343.0[m]SWCRRI2355.0[m]DCRRI2361.5[m]SWCRRI2367.0[m]DCRRI2389.5[m]SWCRRI2400.0[m]DCRRI2413.0[m]SWCRRI2433.5[m]SWCRRI2445.0[m]DCRRI2460.0[m]DCRRI2478.5[m]SWCRRI2494.0[m]SWCRRI2505.0[m]DCRRI2522.0[m]DCRRI -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1366801000128513441832183218931928203120442044204720502118211821612167216721752185218522022202230124152415 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.29 -
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]pdf38.46 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CAL CN GR23002523FMT GR QUARTZDYNE21882474HEXDIP GR19662517MLL DLL AC GR SP CAL19662523MLL DLL AC SL SP CAL10441952MLL DLL SL SP CAL10441946MWD - DIR FE136400MWD - DIR FE10151970MWD - DIR FE19722184MWD - DIR FE21942525SWC GR12721945SWC GR19812521VSP11602470ZDL CN SL19662523 -
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 formasjonstestCONDUCTOR30208.036208.00.00LOTSURF.COND.13 3/81043.017 1/21044.00.00LOTINTERM.9 5/81960.012 1/41960.00.00LOTOPEN HOLE2525.08 1/22525.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2081.08100.0WATER BASED3231.05100.0WATER BASED4341.08100.0WATER BASED10041.08100.0WATER BASED10561.2722.0WATER BASED17051.2721.0WATER BASED18501.2816.0WATER BASED19701.2729.0WATER BASED20821.2719.0WATER BASED21831.2727.0WATER BASED23041.2720.0WATER BASED25251.2720.0WATER BASED -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet2193.50[m ]2194.20[m ]2183.50[m ]2193.00[m ]2183.25[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 formatDokumentstørrelse [MB]pdf0.22