6507/2-1
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Generell informasjon
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Brønnhistorie
GeneralWell 6507/2-1 is located on the Dønna Terrace, offshore Mid Norway. The primary objective of the well was to test the hydrocarbon potential of Middle and Early Jurassic sandstone sequences. Secondary objective was to examine the possibilities of Cretaceous sand in the area.It was expected that the primary target, the Middle Jurassic Tomma sandstone (Fangst Group in today?s nomenclature) would be encountered at ca 3848 m whilst the Early Jurassic Aldra sandstone (Tilje Formation) was prognosed at ca 4158 m. Expected total depth for the well was 4823 m +/- 200 m or about 50 m into Triassic aged sediments.Operations and resultsWell 6507/2-1 was spudded with the semi-submersible installation Polar Pioneer on 24 June 1986 and drilled to TD at 4477 m in Late Triassic claystones and siltstones of the Åre Formation. The well had 29% down time, due mostly to problems with the seal assemblies and technical sidetracking. The sidetrack was kicked off from 3285 m after the pipe had stuck twice, at 3432 m and 3430 m. The well was drilled with seawater and high viscosity pills down to1064 m, with KCl/polymer mud from 1064 m to 3655 m (including sidetrack), and with gel/lignite/resinex mud from 3655 m to TD.The well penetrated several sandy intervals in the Cretaceous, the most important beeing a thin Lysing Formation sand from 2874 to 2879 m, and an Intra-Lange Formation sandy sequence from 3425 m to 3490 m. The Jurassic sandstones of the Fangst Group were encountered at 3858 m. Oil shows; staining and fluorescence were observed sporadically throughout the well from 2800 m to 4375 m. The strongest oil shows were observed in the Lysing and Lange Formation sandstones, and from 3858 m down to 3956 m in the Fangst and Båt Groups. Well site geochemical analyses indicated two source rock intervals in the well. The sequence from 3610 to 3858 m (the Viking Group) was considered to be a fair source rock containing mature Type II marginal Type III kerogen, while the interval 3956 to TD had many good quality coal horizons considered to have excellent potential and to contain mature hydrogen rich source material. No conventional cores were taken in this well. One RFT run was made and a total of 18 pressure points recorded, but no fluid samples were taken.The well was permanently abandoned on 29 September 1986 as a dry hole with residual hydrocarbon shows in both the Cretaceous and Jurassic sequences.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]500.004477.00 -
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 formasjonstestCONDUCTOR30488.036490.00.00LOTSURF.COND.201050.0261080.01.70LOTINTERM.13 3/81880.017 1/21900.01.82LOTINTERM.9 5/83630.012 1/43655.01.97LOT -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL6641878CBL VDL21593640CST GR34213550CST GR36404000CST GR40124452DIL LSS GR SP36254478DLL GR SP4881078DLL LSS GR SP10471895DLL LSS GR SP18783655DLL MSFL GR CAL36254478LDL CNL GR CAL10471892LDL CNL GR CAL18783655LDL CNL GR CAL36254478LSS GR4881078MSFL GR CAL18783655MWD4043743RFT GR38604153SHDT GR36254450VSP10554450 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet40414311686168618411841195920032874287428793610361036153858385838813907392939474135 -
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]pdf7.93pdf2.81 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.23pdf0.31 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4341.1050.025.0WATER BASED24.06.19864901.1050.025.0WATER BASED25.06.19864901.1050.025.0WATER BASED26.06.19867661.0950.025.0WATER BASED30.06.198610801.176.010.0WATER BASED30.06.198610801.157.012.0WATER BASED30.06.198610801.154.014.0WATER BASED30.06.198610801.154.08.0WATER BASED01.07.198610801.157.08.0WATER BASED02.07.198610801.156.010.0WATER BASED03.07.198610801.15WATER BASED06.07.198610801.2017.012.0WATER BASED06.07.198610801.2017.012.0WATER BASED07.07.198610801.2018.011.0WATER BASED08.07.198614031.3025.016.0WATER BASED10.07.198617061.3125.016.0WATER BASED11.07.198617701.7718.05.0WATER BASED25.09.198618311.3423.015.0WATER BASED14.07.198619001.5735.019.0WATER BASED14.07.198619001.5733.017.0WATER BASED14.07.198619001.5734.016.0WATER BASED16.07.198619001.5734.016.0WATER BASED17.07.198619001.5734.016.0WATER BASED18.07.198619001.5730.013.0WATER BASED21.07.198619001.5734.016.0WATER BASED15.07.198619031.5729.011.0WATER BASED21.07.198620961.6237.016.0WATER BASED21.07.198624031.6532.011.0WATER BASED22.07.198624441.6534.011.0WATER BASED24.07.198626411.6533.010.0WATER BASED24.07.198626421.6536.09.0WATER BASED25.07.198626591.6535.010.0WATER BASED27.07.198627221.6532.08.0WATER BASED27.07.198627301.6531.08.0WATER BASED27.07.198628411.6535.08.0WATER BASED28.07.198628721.6532.010.0WATER BASED29.07.198629601.6528.011.0WATER BASED30.07.198630681.6520.05.0WATER BASED31.07.198631661.6524.06.0WATER BASED03.08.198632341.6524.08.0WATER BASED07.08.198632591.6521.06.0WATER BASED03.08.198633201.6523.05.0WATER BASED17.08.198633451.6520.09.0WATER BASED03.08.198633801.6523.06.0WATER BASED11.08.198633801.6516.03.0WATER BASED11.08.198633801.6527.06.0WATER BASED13.08.198633801.6521.06.0WATER BASED13.08.198633801.6626.05.0WATER BASED14.08.198634171.6523.06.0WATER BASED17.08.198634271.6520.08.0WATER BASED04.08.198634321.6523.07.0WATER BASED05.08.198634321.6523.08.0WATER BASED06.08.198634321.6521.09.0WATER BASED11.08.198635011.6625.07.0WATER BASED17.08.198635671.6525.09.0WATER BASED18.08.198636251.6522.07.0WATER BASED19.08.198636551.6521.07.0WATER BASED20.08.198636551.6522.07.0WATER BASED21.08.198636551.6520.06.0WATER BASED24.08.198636551.6522.07.0WATER BASED24.08.198636551.6521.06.0WATER BASED24.08.198636551.6522.07.0WATER BASED25.08.198636551.6522.07.0WATER BASED26.08.198636551.6522.07.0WATER BASED28.08.198636551.6522.08.0WATER BASED02.09.198636551.6522.07.0WATER BASED29.08.198636591.4616.05.0WATER BASED02.09.198636681.4616.05.0WATER BASED02.09.198637431.4616.06.0WATER BASED04.09.198638021.4616.06.0WATER BASED04.09.198638611.7021.06.0WATER BASED05.09.198638921.7721.08.0WATER BASED08.09.198639791.7722.010.0WATER BASED08.09.198640451.7720.09.0WATER BASED08.09.198641121.7721.07.0WATER BASED09.09.198641821.7720.07.0WATER BASED10.09.198642061.7719.08.0WATER BASED11.09.198642441.7720.09.0WATER BASED15.09.198642961.7719.07.0WATER BASED15.09.198643751.7719.09.0WATER BASED15.09.198644441.7716.07.0WATER BASED15.09.198644591.7718.08.0WATER BASED16.09.198644771.7717.06.0WATER BASED18.09.198644771.7716.05.0WATER BASED21.09.198644771.7718.05.0WATER BASED22.09.198644771.7717.06.0WATER BASED23.09.198644771.7717.06.0WATER BASED24.09.198644771.7716.06.0WATER BASED17.09.1986 -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie0.0[unknown]