7125/1-1
Eksport: PDF
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Generell informasjon
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Brønnhistorie
GeneralWell 7125/1-1 was drilled in the Lopparyggen East area on the southern end of the Bjarmeland Platform towards the Nyslepp Fault Complex. The primary purpose of the well was to test for hydrocarbons in the Late Triassic/Early Jurassic sandstones of the Kapp Toscana Group. These were found hydrocarbon bearing in well 7124/3-1. A secondary objective was to test for hydrocarbons in the underlying Middle Triassic Kobbe Formation. In well 7124/3-1 weak oil shows were seen in sands from this formation.Operations and resultsWildcat well 7125/1-1 was spudded with the semi-submersible installation Ross Rig 30 November 1988 and drilled to TD at 2200 m in Triassic rocks. Drilling proceeded without significant problems. The well was drilled with spud mud down to 818 m and with KCl / polymer mud from 818 m to TD.There was no indication of shallow gas in the hole. The well proved a significant reservoir development in the Kapp Toscana Group where 130 m sandstone with good reservoir properties was indicated. Top of Kapp Toscana Group, Stø Formation, was encountered at 1399 m. Logs and RFT showed a thin oil zone of 1 - 1.5 m from 1403.5 - 1405 m. Oil shows were seen from 1402.5 m down to 1435 m in sandstones. In the interval 1405 -2200 pressure point measurements show a gradient of 1.14 SG, which indicate saline formation water. The Triassic Kobbe Formation was encountered at 2104.5 m. Gas was encountered in two thin sand intervals in the top of the Kobbe Formation. The upper sand interval (2105.1 m to 2107.8 m) has an average log porosity of 19 % and an average water saturation of 49 %. In the lower sand (2123.5 m to 2125.3 m) the corresponding values are 20.5 and 53, respectively. Gas shows and weak oil shows were observed in thin sand intervals down to 2140 m. One core was taken in the Hekkingen Formation cap rock from 1360 to 1371 m. A second core was taken in the Stø reservoir sandstone from 1406 m to 1434 m. A total of three Repeat Formation Tester (RFT) samples were recovered; an oil sample at 1403.8 m, a water sample at 1405.5 m and a gas/water sample at 2106.3 m.The well was permanently abandoned as a minor oil and gas discovery on 30 December 1988.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]820.002199.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11360.01368.0[m ]21406.01434.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]36.0Borekjerner 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 formasjonstestCONDUCTOR30399.0360.00.00LOTINTERM.13 3/8802.017 1/20.01.20LOTOPEN HOLE2200.012 1/42200.00.00LOT -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CST403645CST GR403645DIL LSS GR401816DIL LSS GR8042180LDL CNL GR8042181LDL GR401816MWD - GR RES4052200RFT HP14050RFT HP AMS14012138RFT HP AMS14012138SHDL AML GR8042183VSP4002184 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet276391568568597617617131413181344139913991521161221052105 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.28 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf2.01 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf18.27 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.18pdf0.20 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3141.06WATER BASED12.12.19883201.2520.05.3WATER BASED28.12.19884021.06WATER BASED12.12.19884041.06WATER BASED12.12.19886071.06WATER BASED12.12.19888181.2014.07.2WATER BASED12.12.19888181.06WATER BASED12.12.19889551.2011.05.8WATER BASED12.12.198812131.2516.07.2WATER BASED12.12.198813601.2516.05.3WATER BASED12.12.198813601.2515.06.3WATER BASED12.12.198814061.2513.06.8WATER BASED13.12.198814381.2517.07.2WATER BASED14.12.198815671.2513.06.3WATER BASED15.12.198815891.2515.06.3WATER BASED19.12.198817021.2514.06.3WATER BASED20.12.198817591.2518.06.8WATER BASED20.12.198818601.2518.06.8WATER BASED20.12.198819201.2519.06.3WATER BASED20.12.198820341.2520.07.2WATER BASED21.12.198820741.2520.06.3WATER BASED22.12.198821711.2520.07.2WATER BASED27.12.198822001.2519.06.3WATER BASED27.12.198822001.2520.05.8WATER BASED27.12.198822001.2520.05.3WATER BASED27.12.198822001.25WATER BASED28.12.1988 -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1370.5[m]CICHRON -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet1423.70[m ]1433.70[m ]1408.00[m ]1413.25[m ]1418.40[m ]1423.50[m ]1432.40[m ]