25/11-17
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Generell informasjon
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Brønnhistorie
GeneralWell 25/11-17 is located south of the Balder / Grane area. The objective of the well was to test the hydrocarbon potential of sands of both Jurassic and Paleocene age. The location was chosen such that it left minimum reserves up dip in the Jurassic prospect while simultaneously penetrating the Paleocene prospect above the expected regional oil water contact.Operations and resultsExploration well 25/11-17 was spudded with the semi-submersible installation "West Delta" on 1 March 1993 drilled to a total depth of 2256 m, 13 m into metamorphic basement. The well was drilled water based with spud mud down to 1413 m and with KCl / Polymer from 1413 m to TD.Reservoir sands were encountered in the Balder Formation from 1590 m to 1646 m but no shows were seen and the reservoir proved to be water bearing. Reservoir sands were also encountered in the Statfjord Formation from 1998 m to 2038 m but again no shows were seen and the reservoir proved to be water bearing. Overlaying the basement the well penetrated a 10 m thick layer of regolith (weathered rock). Seven conventional cores were cut from 1625.5 m to 1759.6 m, starting in the middle of the Balder Formation, continuing through the Sele, Lista and Våle Formations and ending in the Tor Formation. An eighth core was cut from 2018 m to 2037 m in the lower part of the Statfjord Formation and into the regolith layer, and a final ninth core was cut at TD in the metamorphic basement from 2248 m to 2256 m. No fluid samples were taken. The well was permanently abandoned as a dry well on 22 March 1993.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]1420.002247.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11625.51640.0[m ]21643.01651.6[m ]31654.01660.5[m ]41661.51679.0[m ]51679.61705.0[m ]61706.51732.0[m ]71732.61759.0[m ]82018.02035.9[m ]92248.02255.9[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]150.1Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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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 formasjonstestCONDUCTOR30237.036237.00.00LOTINTERM.9 5/81398.012 1/41413.01.80LOTOPEN HOLE2256.08 1/22256.00.00LOT -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]4-ARM DIP GR13972235CST GR14652222DLL MLL ZDL CN GR SP CHT13972242FMT-HP GR CHT15882129MAC SL CHT13972228MWD - GR RES ROP DIR1682248VSP4402225 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet153777815897897114615871587164716521721174217421847187018821921192119511966198519851997214622332243 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokument størrelse [KB]pdf0.32 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokument størrelse [KB]pdf0.70 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokument størrelse [KB]pdf15.10 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling5781.05WATER BASED14131.05WATER BASED14651.2013.0WATER BASED16141.2819.0WATER BASED -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1465.0[m]SWCHYDRO1476.0[m]SWCHYDRO1485.0[m]SWCHYDRO1500.0[m]SWCHYDRO1525.0[m]SWCHYDRO1551.0[m]SWCHYDRO1561.0[m]SWCHYDRO1567.0[m]SWCHYDRO1571.0[m]SWCHYDRO1580.0[m]SWCHYDRO1590.0[m]SWCHYDRO1630.2[m]CHYDRO1634.2[m]CHYDRO1637.0[m]CHYDRO1640.0[m]CHYDRO1930.0[m]SWCHYDRO2018.0[m]CHYDRO2022.4[m]CHYDRO2023.7[m]CHYDRO2028.7[m]CHYDRO2035.1[m]CHYDRO2045.0[m]SWCHYDRO2055.0[m]SWCHYDRO2083.0[m]SWCHYDRO2093.0[m]SWCHYDRO