25/1-9
Eksport: PDF
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Generell informasjon
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Brønnhistorie
GeneralWell 25/1-9 was drilled nearby and south of the Frigg structure close to the UK boarder, and was designed to prove possible hydrocarbon accumulation in the Frigg Formation and "Cod" sandstone (Intra Balder Formation Sandstone). A main objective was to verify the seismo-stratigraphic interpretation in block 25/1. In addition, the well was expected to obtain valuable data input to the Frigg Field reservoir simulation study. The prognosed depth was 2813 m, 50 m into the Shetland Group.Operations and resultsWildcat well 25/1-9 was spudded with Wi1h. Wi1helmsen installation Treasure Scout 9 September 1996 and drilled to TD at 2807 m in the Late Cretaceous Hardråde Formation. Drilling proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 990 m, with KCl/polymer mud from 990 m to 1965 m, and with PAC/polymer/seawater from 1965 m to TDThe Frigg Formation was encountered at 2035 m. It consisted of very fine to fine, hard sandstones with poor reservoir characteristics down to 2051 m. From 2051 m to 2199 m the lithology was predominantly massive sandstone with excellent reservoir characteristics. Occasional stringers of claystone and what was interpreted as concretions of calcite-cemented sandstone occurred throughout the section. The lower part, from 2196 m to 2237 m was claystone with a3 m conglomerate at the base.Hydrocarbons were encountered in the Frigg Formation with 2.6 m net pay of gas down to 2054 m and 6.9 m net pay oil down to a free water level at 2063 m. RFT pressure measurements gave an oil gradient corresponding to a fluid density of 0.81 g/cm3. Pore pressure indicated pressure depletion due to production from the Frigg Field. RFT data indicated that the Frigg Formation contains small reserves and the discovery was considered uneconomic.The gas/oil contact was defined at 2054 m, and the oil/water contact at 2063 m. Only very weak shows were recorded in the underlying water zone and Intra Balder Formation Sandstone. Two segregated fluid samples were taken, one in the gas zone and one in the oil zone. Four cores were cut in the interval 2048 - 2111 m, and one core was cut in the interval 2234 - 2256 m. The Frigg Formation came in at 2035 m as prognosed. The well was permanently abandoned as an oil and gas discovery 12 October 1986.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]1000.002807.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12048.02049.2[m ]22049.52068.0[m ]32068.02087.2[m ]42088.52107.0[m ]52234.02255.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]78.4Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2055.0[m]CR.R.I2076.0[m]CR.R.I2090.0[m]CR.R.I2200.0[m]SWCR.R.I2216.0[m]SWCR.R.I2232.0[m]SWCR.R.I2235.0[m]CR.R.I2240.0[m]CR.R.I2253.0[m]CR.R.I2254.0[m]CR.R.I2261.0[m]SWCR.R.I2287.0[m]SWCR.R.I2334.0[m]SWCR.R.I2340.5[m]SWCR.R.I2347.0[m]SWCR.R.I2369.5[m]SWCR.R.I2377.0[m]SWCR.R.I2385.0[m]SWCR.R.I2393.5[m]SWCR.R.I2407.5[m]SWCR.R.I2416.0[m]SWCR.R.I2427.0[m]SWCR.R.I2443.0[m]SWCR.R.I -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet135367990203522372237233223732402242024522480251525502603265526682675269727572757 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.36 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf0.51 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.21pdf0.24 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf13.25 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL8651947CST19682764CST19682347DIL LSS GR SP9751915DIL LSS GR SP19472776DIL LSS SP GR19472749DLL MSFL NSG SP GR20252300LDL CNL GR CAL19472756LDL GR CAL9751915MWD - GR RES DIR1352807NGS20252300RFT20522056RFT20522736RFT20542547SHDT19472757VSP10002780 -
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 formasjonstestCONDUCTOR30221.036221.00.00LOTSURF.COND.20974.026990.01.33LOTINTERM.13 3/81947.017 1/21965.01.74LOTOPEN HOLE2807.012 1/42807.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1701.03WATER14.10.19862211.15WATER09.09.19864531.15WATER10.09.19866211.03WATER14.09.19869900.00WATER14.09.19869900.0014.07.0WATER15.09.19869901.15WATER11.09.198610341.1310.07.0WATER16.09.198613001.1514.011.0WATER17.09.198617151.1613.010.0WATER18.09.198617971.0916.09.0WATER09.10.198619401.1612.010.0WATER21.09.198619651.2014.08.0WATER21.09.198619650.0014.010.0WATER21.09.198619650.0014.010.0WATER22.09.198619741.0810.09.0WATER23.09.198620501.0813.010.0WATER24.09.198620891.0815.08.0WATER25.09.198621111.0814.09.0WATER28.09.198622341.0817.013.0WATER28.09.198622441.0818.013.0WATER28.09.198623191.0818.012.0WATER29.09.198625111.0818.014.0WATER30.09.198626021.0918.014.0WATER01.10.198627021.0918.012.0WATER02.10.198627231.0917.011.0WATER05.10.198628071.0819.013.0WATER05.10.198628070.0019.012.0WATER05.10.198628070.0016.011.0WATER07.10.198628070.0015.011.0WATER08.10.198628070.0016.012.0WATER06.10.1986 -
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