2/1-3
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Generell informasjon
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Brønnhistorie
GeneralWell 2/1-3 was drilled on the Cod Terrace on the margin between the southern Vestland Arch and the Central Trough in the North Sea. The primary objective of the well was to test Late Jurassic sandstone within a fault sealed dip closure, against the downthrown side of a westerly heading fault complex at the base of the Cretaceous. Triassic sandstone was a secondary objective.Operations and resultsWildcat well 2/1-3 was spudded with the semi-submersible installation SEDCO H on 3 November 1979 and drilled to TD at 4297 in the Late Permian Zechstein Group. The well was drilled with Seawater down to 625 m and with Lignosulphonate mud from 625 m to TD.Top of the Tyne Group, Mandal Formation, was encountered at 3791 m, with the Late Jurassic sandstone at 3819.5 m. The Late Jurassic sandstone reservoir was oil-bearing all through. The reservoir is a 59.5 m thick homogeneous fine to medium grained sandstone with a porosity from 15% to 22%. The sandstone grades into a well cemented argillaceous siltstone below. No oil/water contact was established. Oil shows were recorded in Tor Formation limestone at 3000 - 3005 m, throughout the Late Jurassic reservoir sandstone, and in Middle Jurassic Bryne Formation sandstone at 4020 to 4040 m.Four cores were cut from 3823.0 to 3893.5 m in the Ula Formation reservoir sandstones.The well was permanently abandoned on 29 March 1980 as an oil discovery.TestingThree drill stem tests were performed in the Late Jurassic sandstones.DST 1A perforated the interval 3863 to 3872.1 m and produced 226 Sm3 oil and 18689 Sm3 gas per day through a 40/64" choke. The GOR was reported to be 150 Sm3/Sm3 and the oil gravity was 41 deg API. The maximum bottom hole temperature recorded in the test was 151.1 deg C.DST 2 perforated the interval 3838.5 to 3844.6 m and produced 1051 Sm3 oil and 54991 Sm3 gas per day through a 32/64" choke. The GOR was reported to be 116 Sm3/Sm3 and the oil gravity was 39 deg API. The maximum bottom hole temperature recorded in the test was 150.0 deg C.DST 3 perforated the interval 3819.0 to 3825.1 m and produced 933 Sm3 oil and 39077 Sm3 gas per day through a 32/64" choke. The GOR was reported to be 108 Sm3/Sm3 and the oil gravity was 38 deg API. The maximum bottom hole temperature recorded in the test was 150.8 deg C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?NOBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]180.004296.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13823.03832.2[m ]23838.03855.7[m ]33856.43862.2[m ]43875.03893.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]51.1Borekjerner 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 formasjonstestCONDUCTOR30139.036143.00.00LOTSURF.COND.18 5/8595.024608.01.81LOTINTERM.13 3/81899.017 1/21910.01.92LOTINTERM.9 5/83558.012 1/43566.02.00LOTLINER73935.08 1/24267.00.00LOT -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.03863387215.92.03839384512.73.03819382512.7Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.02.03.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0226190000.8201502.01051550000.8301163.0933390000.835108 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CALI6251825CBL VDL GR33953927CDL CNL GR35384270CDM35874221CDM AP35874221DLL MLL35873940FMT00GR CAL5500IEL BHC GR AC304273TEMP952250VELOCITY304273 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet96152327982798283828452910298729873000342435203524353435343579362537913791382038203991410141634219 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.71 -
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]pdf2.51pdf7.23 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.13pdf0.28 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling9301.15waterbased14221.30waterbased22271.57waterbased28131.60waterbased34091.63waterbased42971.68waterbased -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie3792.0[m]DCPETROSTR3801.0[m]DCPETROS3804.0[m]DCPETROS3810.0[m]DCPETROS3816.0[m]DCPETROS3822.0[m]DCPETROS3823.0[m]CPETROS3825.8[m]CPETROS3844.8[m]CPETROS3848.1[m]CPETROS3853.1[m]CPETROS3858.5[m]CPETROS3862.0[m]CPETROS3876.0[m]CPETROS3877.0[m]CPETROS3877.8[m]CPETROS3877.8[m]CPETROS3881.3[m]CPETROS3883.1[m]CPETROS3885.8[m]CPETROS3887.7[m]CPETROS3889.4[m]CPETROS3891.2[m]CPETROS3893.5[m]CPETROS3897.0[m]DCPETROS3903.0[m]DCPETROS3909.0[m]DCPETROS3915.0[m]DCPETROS3921.0[m]DCPETROS3927.0[m]DCPETROS3933.0[m]DCPETROS3939.0[m]DCPETROS3945.0[m]DCPETROS3951.0[m]DCPETROS3957.0[m]DCPETROS3963.0[m]DCPETROS3969.0[m]DCPETROS3975.0[m]DCPETROS3981.0[m]DCPETROS3987.0[m]DCPETROS3993.0[m]DCPETROS