25/6-2
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Generell informasjon
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Brønnhistorie
GeneralThe well 25/6-2 is located in the southern part of block 25/6, approximately 175 km Northwest of Stavanger on the northern part of the Utsira High. Utsira High forms the southern part of western rim of the Horda Platform and lies between the South Viking Graben to the west and Stord Basin to the east.The main objectives for the well 25/6-2 were to test the hydrocarbon potential of the Paleocene Ty Formation in the Delta and Beta prospects and the extension of the Middle Jurassic Vestland Group discovery in well 25/6-1. The Ty Formation prospects were anticipated to comprise of clastic, gravity fan deposits. The well location was in a position that would test both a mapped simple closure at this level and a larger stratigraphic trap interpreted to be characterised by sands pinching out to the south.Operations and resultsThe well 25/6-2 was spudded with the semi-submersible installation Treasure Saga the 26 April 1992 and drilled to TD at 2392 m in the Early Jurassic Drake formation. The well was drilled with seawater and gel down to 1046 m and with KCl mud from 1046 m to TD.The Nordland, Hordaland and Rogaland Groups consisted mainly of clays and claystones with minor sandstones. The Cromer Knoll Group consisted of limestone interbedded with claystones and marls, while the Viking Group consisted mainly of claystones as expected. The tops prognosed for the well were within the expected margin of error for the Top Balder and Top Shetland seismic markers. However, the depths prognosed for the Top Ty Formation, base Cretaceous, top Vestland, and top Dunlin markers were off by as much as 65m. Therefore, the top of the Vestland Group was encountered 39.5 m below the oil water contact in the Vestland discovery at 25/6-1. No hydrocarbons were encountered in any of the prospective intervals, and only one show was described from a single cutting sample recovered from the Vestland Group. No cores were cut and no fluid sample taken. The well was permanently abandoned as a dry well on 29 May 1992.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]250.002392.00 -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie490.0[m]DCRRI510.0[m]DCRRI530.0[m]DCRRI550.0[m]DCRRI570.0[m]DCRRI590.0[m]DCRRI610.0[m]DCRRI630.0[m]DCRRI650.0[m]DCRRI670.0[m]DCRRI970.0[m]DCRRI990.0[m]DCRRI1010.0[m]DCRRI1030.0[m]DCRRI1051.0[m]SWCSAGA1070.0[m]DCRRI1085.0[m]SWCSAGA1100.0[m]DCRRI1118.0[m]SWCSAGA1130.0[m]DCRRI1150.0[m]DCRRI1170.0[m]DCRRI1190.0[m]DCRRI1210.0[m]DCRRI1210.0[m]SWCSAGA1230.0[m]DCRRI1250.0[m]DCRRI1265.0[m]SWCSAGA1270.0[m]DCRRI1290.0[m]DCRRI1310.0[m]DCRRI1330.0[m]DCRRI1350.0[m]DCRRI1370.0[m]DCRRI1390.0[m]DCRRI1410.0[m]DCRRI1419.0[m]SWCSAGA1430.0[m]DCRRI1450.0[m]DCRRI1470.0[m]DCRRI1478.0[m]SWCSAGA1490.0[m]DCRRI1510.0[m]DCRRI1530.0[m]DCRRI1550.0[m]DCRRI1570.0[m]DCRRI1575.0[m]SWCSAGA1580.0[m]DCRRI1610.0[m]DCRRI1620.0[m]DCRRI1635.0[m]SWCSAGA1650.0[m]DCRRI1670.0[m]DCRRI1690.0[m]DCRRI1710.0[m]DCRRI1723.0[m]SWCSAGA1750.0[m]DCRRI1770.0[m]DCRRI1790.0[m]DCRRI1802.0[m]SWCSAGA1810.0[m]DCRRI1820.0[m]DCRRI1830.0[m]DCRRI1850.0[m]DCRRI1870.0[m]DCRRI1890.0[m]DCRRI1910.0[m]DCRRI1923.0[m]SWCSAGA1930.0[m]DCRRI1934.0[m]SWCSAGA1940.0[m]DCRRI1950.0[m]DCRRI1970.0[m]DCRRI1980.0[m]DCRRI1985.0[m]SWCSAGA2000.0[m]DCRRI2010.0[m]DCRRI2020.0[m]DCRRI2025.0[m]DCRRI2030.0[m]DCRRI2040.0[m]SWCSAGA2045.0[m]DCRRI2056.0[m]SWCSAGA2070.0[m]DCRRI2080.0[m]DCRRI2095.0[m]DCRRI2100.0[m]DCRRI2105.0[m]DCRRI2110.0[m]DCRRI2115.0[m]DCRRI2120.0[m]DCRRI2125.0[m]DCRRI2130.0[m]DCRRI2135.0[m]DCRRI2140.0[m]DCRRI2146.0[m]SWCSAGA2155.0[m]DCRRI2160.0[m]SWCSAGA2165.0[m]DCRRI2170.0[m]DCRRI2175.0[m]DCRRI2180.0[m]DCRRI2185.0[m]DCRRI2190.0[m]DCRRI2195.0[m]DCRRI2200.0[m]DCRRI2207.0[m]SWCSAGA2215.0[m]DCRRI2220.0[m]DCRRI2225.0[m]DCRRI2230.0[m]DCRRI2235.0[m]DCRRI2241.0[m]DCRRI2247.0[m]SWCSAGA2253.0[m]DCRRI2259.0[m]DCRRI2268.0[m]DCRRI2274.0[m]DCRRI2280.0[m]DCRRI2283.0[m]DCRRI2286.0[m]DCRRI2289.0[m]DCRRI2292.0[m]DCRRI2298.0[m]DCRRI2304.0[m]DCRRI2306.0[m]SWCSAGA2310.0[m]DCRRI2316.0[m]DCRRI2319.0[m]DCRRI2322.0[m]DCRRI2325.0[m]DCRRI2328.0[m]DCRRI2329.0[m]SWCSAGA2334.0[m]DCRRI2337.0[m]DCRRI2340.0[m]DCRRI2343.0[m]DCRRI2346.0[m]DCRRI2348.0[m]SWCSAGA2349.0[m]DCRRI2352.0[m]DCRRI2358.0[m]DCRRI2361.0[m]DCRRI2367.0[m]DCRRI2370.0[m]DCRRI2376.0[m]DCRRI2382.0[m]DCRRI2385.0[m]DCRRI2388.0[m]DCRRI2392.0[m]DCRRI -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet145652927973100012201250164016821927192719842053215621682207220722392239225622612278227823012324232423452345 -
Spleisede logger
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Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf1.86 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
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Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
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Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CST10512030CST20402392DIL MSFL LSS LDL CNL GR20262395DLL LSS LDL GR10302040MDT21732343MWD - GR DPR DIR194257MWD - GR DPR DIR2571041MWD - GR RES NEU DENS DIR20262387MWD - GR RGD DIR10412047SHDT20262392VDL8502026VSP9302390 -
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 formasjonstestCONDUCTOR30257.036257.00.00LOTINTERM.201030.0261031.01.65LOTINTERM.13 3/82026.017 1/22026.01.65LOTOPEN HOLE2392.012 1/42392.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3701.146.0WATER BASED7981.144.0WATER BASED10451.1820.0WATER BASED13281.3022.0WATER BASED13881.3525.0WATER BASED16091.3531.0WATER BASED17401.3532.0WATER BASED20501.3535.0WATER BASED22251.2024.0WATER BASED22661.2026.0WATER BASED23921.2026.0WATER BASED -
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