7122/6-1
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Generell informasjon
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Brønnhistorie
GeneralWildcat well 7122/6-1 was designed to drill a prospect located in the central part of the block, located in the eastern part of the Hammerfest Basin. The purpose of well 7122/6-1 was to test the hydrocarbon potential of the Middle Jurassic to Upper Triassic sandstones in the main structure of the block.Operations and resultsWildcat well 7122/6-1 was spudded with Polar Frontier Drilling semi-submersible installation Polar Pioneer on 6 September 1987 and drilled to TD at 2707 m in the Middle - Late Triassic Snadd Formation.The structure penetrated by the well is a large tilted block dipping southwards. The northern closure is a major WNW-ESE fault. Top of the main markers were encountered higher than prognosed: top Stø Formation came in 71 m higher, and top Trias came in 183 m higher than expected. The Jurassic reservoirs were found water bearing, however, some oil recovered by RFT indicated the presence of a thin (1.5 m) oil zone at the top of the Stø formation. The late Triassic Snadd Formation proved gas and condensate in a 71.5 m gross thickness reservoir. Weak shows were recorded in cuttings from the Hekkingen shale. Strong whitish yellow direct fluorescence was observed in the cored sandstones all through the Stø Formation down to 2040 m. Weak shows were recorded on the cored sandstones in the Nordmela, Tubåen, and Fruholmen Formations. Below this level, in the Triassic section, weak oil shows were recorded in sandstones, including the reservoir section between 2400 to 2450 m that produced gas and condensate in the DST.A very dense geochemical screening in this well showed only very lean source rocks (< 1% TOC) above 1340 m. Between 1340 m and 1931 m, the average TOC is around 1% with a somewhat richer interval between 1750 m and 1900 m (TOC 1.5 to 3%), but with HI generally lower than 100 mg/g. Between 1931 m and 2015 m, high organic content (TOC 10 to 15%) and high HI (280 - 350 mg/g) indicate a very good source rock in the Hekkingen Formation. Between 2040 m to 2099 m) high TOC values are related to coal beds or organic shales (Nordmela and Tubåen formations). From 2100 m to 2710 m (TD), TOC was generally low, but with some moderately good intervals such as 2100 m - 2150 m (up to 3%). The HI was generally < 100 mg/g with some intervals at 100 - 150 mg/g. Thus, this section presents a low source rock potential. The vitrinite Ro and Tmax indicate that the well enters the oil window at around 2000-2100 m, just where the best source rock is found (Ro = 0.6% and Tmax = 435°C).Four cores were cut in the interval from 2019 m to 2099 m in the Stø, Nordmela, Tubåen, and Fruholmen Formations. A total of eleven RFT fluid samples were taken below 2015 m in the Jurassic and Triassic sections. The sample at 2015.8 m contained a small amount of condensate (0.5 cm3), while the sample at 2425 m contained a good quantity of condensate (600 cm3) with density 0.752 g/cm3. The other samples recovered various compositions of mud filtrate, water, and gas.Well 7122/6-1 was permanently abandoned on 11 November 1987 as a gas and condensate discovery.TestingTwo DST's were performed in the Late Triassic reservoirs (Snadd Formation). DST1 perforated 2439.5 m to 2449 m and gave no flow. DST2 perforated 2424 m to 2434 m. During this test the well flowed gas and condensate with flow rates ranging from 530 000 to 567 000 Sm3/d of gas and 73 to 66 Sm3/D condensate through a 17.5 mm choke. GOR varied from 7377 Sm3/Sm3 to 8558 Sm3/Sm3. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]800.002710.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12019.02039.2[m ]22039.22063.9[m ]32064.02086.9[m ]42087.02098.7[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]79.5Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDST2424.002434.0003.11.1987 - 00:00YES -
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 formasjonstestCONDUCTOR30485.036489.01.03LOTSURF.COND.20783.026928.01.47LOTINTERM.13 3/81860.017 1/21875.00.00LOTOPEN HOLE2707.012 1/42707.00.00LOT -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.1244924390.02.22434242417.4Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.120.500732.225.00021.00028.00079Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.12.2695793930.7490.6808397 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL6001853CST485798CST7831840CST18872700DIS LSS GR485794DIS LSS GR7811841DITE BHC GR18602497DITE GR18602269DITE GR24502703DLL BHC MSFL18602701LDL CNL GR18602253LDL CNL SGR18602481LDL CNL SGR24502696LDL GR485773LDL GR7811823MWD4242710RFT20122231RFT21862448RFT24332654SHDT GR7811845SHDT GR18602490SHDT GR24752705VSP7002497 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet424547547759759916916164918841931201520152038205220632191 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokument størrelse [KB]pdf0.42 -
Geokjemisk informasjon
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Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokument størrelse [KB]pdf12.06 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokument størrelse [KB]pdf0.43pdf0.22 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4241.03WATER BASED12.11.19874501.034.07.6WATER BASED09.09.19874860.003.06.0WATER BASED09.09.19874891.03WATER BASED10.09.19877981.03WATER BASED11.09.19877981.03WATER BASED18.09.19879281.1221.012.4WATER BASED18.09.198711481.128.710.0WATER BASED18.09.198712791.128.610.0WATER BASED18.09.198714351.1320.08.5WATER BASED18.09.198715241.1321.08.6WATER BASED22.09.198716391.1321.08.6WATER BASED22.09.198717301.1420.08.6WATER BASED22.09.198717611.1421.08.6WATER BASED22.09.198718751.2022.08.6WATER BASED28.09.198718751.1821.07.7WATER BASED23.09.198718751.2820.07.1WATER BASED24.09.198718751.2821.07.2WATER BASED25.09.198718751.2821.07.6WATER BASED28.09.198718911.2023.09.1WATER BASED28.09.198720191.2523.07.6WATER BASED29.09.198720191.3024.010.0WATER BASED30.09.198720391.3023.010.0WATER BASED02.10.198720641.3026.019.0WATER BASED02.10.198720801.3125.011.0WATER BASED05.10.198720871.3126.010.0WATER BASED05.10.198720981.3124.010.0WATER BASED05.10.198721371.3122.013.0WATER BASED07.10.198721641.3120.012.4WATER BASED07.10.198722181.3128.012.0WATER BASED08.10.198722641.3125.014.4WATER BASED09.10.198723731.3125.012.4WATER BASED14.10.198724171.3125.012.0WATER BASED16.10.198724371.2013.06.0WATER BASED03.11.198724691.0013.05.5WATER BASED30.10.198724711.2019.06.5WATER BASED29.10.198724881.3125.012.0WATER BASED19.10.198725001.3125.011.0WATER BASED19.10.198725001.3125.011.0WATER BASED20.10.198725141.3221.011.0WATER BASED20.10.198725751.3020.011.5WATER BASED21.10.198726241.3023.011.0WATER BASED22.10.198726801.3020.012.5WATER BASED23.10.198727101.3023.015.3WATER BASED26.10.198727101.3018.09.5WATER BASED27.10.198727101.3014.010.5WATER BASED28.10.198727101.2014.06.5WATER BASED04.11.198727101.2012.05.5WATER BASED05.11.198727101.2016.04.7WATER BASED06.11.198727101.3018.04.7WATER BASED09.11.198727101.2014.06.5WATER BASED02.11.198727101.2013.06.0WATER BASED02.11.1987 -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie744.2[m]CC.F.P744.4[m]CC.F.P758.4[m]CC.F.P760.1[m]CC.F.P764.9[m]CC.F.P765.2[m]CC.F.P767.7[m]CC.F.P768.0[m]CC.F.P771.4[m]CC.F.P775.0[m]CC.F.P780.0[m]CC.F.P785.0[m]CC.F.P790.0[m]CC.F.P795.0[m]CC.F.P900.0[m]CC.F.P1100.0[m]CC.F.P1300.0[m]CC.F.P1500.0[m]CC.F.P1700.0[m]CC.F.P1740.0[m]CC.F.P1875.0[m]CC.F.P1930.0[m]CC.F.P1952.5[m]CC.F.P1972.0[m]CC.F.P1972.5[m]CC.F.P1979.0[m]CC.F.P1985.5[m]CC.F.P1990.0[m]CC.F.P1992.5[m]CC.F.P2001.5[m]CC.F.P2002.0[m]CC.F.P2006.0[m]CC.F.P2008.0[m]CC.F.P2011.0[m]CC.F.P2013.0[m]CC.F.P2014.0[m]CC.F.P2038.1[m]COD2039.0[m]CC.F.P2039.2[m]COD2039.3[m]CC.F.P2041.4[m]COD2041.4[m]CC.F.P2044.2[m]COD2046.5[m]CC.F.P2047.8[m]COD2048.6[m]CC.F.P2049.9[m]CICHRON2050.8[m]CC.F.P2054.0[m]CC.F.P2062.9[m]CICHRON2063.0[m]CC.F.P2064.0[m]CC.F.P2068.8[m]CC.F.P2069.5[m]CC.F.P2072.8[m]CC.F.P2073.6[m]CC.F.P2076.3[m]CC.F.P2078.0[m]CC.F.P2079.0[m]CC.F.P2083.4[m]CC.F.P2083.8[m]CC.F.P2086.8[m]CC.F.P2089.5[m]CC.F.P2092.3[m]CC.F.P2093.0[m]CC.F.P2097.0[m]CC.F.P2098.5[m]CC.F.P2103.0[m]CC.F.P2125.0[m]CC.F.P2131.0[m]CC.F.P2146.0[m]CC.F.P2147.5[m]CC.F.P2200.0[m]CC.F.P2228.0[m]CC.F.P2242.0[m]CC.F.P2314.0[m]CC.F.P2341.0[m]CC.F.P2371.0[m]CC.F.P2461.0[m]CC.F.P2467.0[m]DCOD2473.0[m]CC.F.P2500.0[m]CC.F.P2545.0[m]CC.F.P2574.5[m]CC.F.P2587.5[m]CC.F.P2595.0[m]CC.F.P2603.0[m]CC.F.P2611.0[m]CC.F.P2617.5[m]CC.F.P2626.5[m]CC.F.P2651.0[m]CC.F.P2655.5[m]CC.F.P2657.5[m]CC.F.P2658.0[m]CC.F.P2662.0[m]CC.F.P2671.5[m]CC.F.P2678.0[m]CC.F.P -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet2020.25[m ]2023.75[m ]2030.00[m ]2037.75[m ]2041.50[m ]2052.50[m ]2082.55[m ]2092.75[m ]2019.00[m ]2023.00[m ]2029.25[m ]2034.50[m ]2037.50[m ]2040.75[m ]2044.75[m ]2051.25[m ]2057.00[m ]2060.25[m ]