7121/4-2
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Generell informasjon
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Brønnhistorie
GeneralWildcat well 7121/4-2 was drilled on a structure separate from and North of the Snøhvit Field in the Hammerfest Basin. The main objective was to test possible hydrocarbon accumulations in Middle to Early Jurassic sandstones. Prognosed TD was at 2800 m in rocks of Triassic age.Operations and resultsWildcat well 7121/4-2 was spudded with the semi-submersible installation West Vanguard on and drilled to TD at 2800 m in the Late Triassic Fruholmen Formation. Drilling proceeded without significant problems to 2460 m, in the middle of an Oxfordian shale, where cavings caused some tight spot problems while setting casing. Rough weather caused some delay in the drilling schedule. The well was drilled with bentonite spud mud down to 417 m, with pre-hydrated bentonite from 417 m to 900 m, with gypsum/ lignosulphonate from 900 m to 2455 m, and with lignosulphonate from 2455 m to TD.Reservoir top, Stø Formation, was encountered at 2480 m. RFT tests, samples and log responses indicated gas down to a gas/water contact at 2517 m. The gas zone consists of an interbedded sandstone/shale sequence with fair/poor reservoir properties. Fluorescence and cut was recorded throughout the cored section, which included the reservoir section. In addition oil stain was seen on a core from 2541.5 m to 2551 m. There was also a small gas zone at 2701.5 m to 2705 m in the Tubåen Formation. Chromatographic analysis showed a significantly drier gas here than in the main reservoir. Triassic, Rhaetian age sandstone was encountered from 2737 m to TD. Basement was not seen. Seven cores were cut in from 2463 m in the Fuglen Formation to 2597.5 m in the Nordmela Formation. The recovery was 134.3 m. Segregated RFT samples were taken at 2485.5 m (gas/mud filtrate and water/trace condensate), 2516 m (gas/mud filtrate/water), 2526 m (mud filtrate/water/trace gas), and at 2701.7 m (gas with small amount of mud filtrate and water).The well was permanently abandoned as a gas and condensate discovery on 14 April 1985TestingOne drill stem test was performed. The interval 2484 m to 2493 m was perforated and production tested. During the main flow period the test flowed 866900 Sm3 gas and 77.5 Sm3 condensate pr day through a 24.5 mm choke. This gives a GOR of 11186 Sm3/Sm3. Condensate density was 0.769 g/cm3. The CO2 and H2S contents in the gas were measured to 3.0 % and 1.7 ppm, respectively. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]420.002799.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12463.02481.2[m ]22481.02499.0[m ]32499.02527.0[m ]42527.02548.6[m ]52549.02555.5[m ]62555.52583.5[m ]72583.52597.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]134.3Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie500.0[m]DCGERH.510.0[m]DCGERH.520.0[m]DCGERH.530.0[m]DCGERH.540.0[m]DCGERH.550.0[m]DCGERH.560.0[m]DCGERH.570.0[m]DCGERH.580.0[m]DCGERH.600.0[m]DCGERH.610.0[m]DCGERH.620.0[m]DCGERH.630.0[m]DCGERH.640.0[m]DCGERH.650.0[m]DCGERH660.0[m]DCGERH.670.0[m]DCGERH.680.0[m]DCGERH.690.0[m]DCGERH.700.0[m]DCGERH.710.0[m]DCGERH.730.0[m]DCGERH.740.0[m]DCGERH.750.0[m]DCGERH.760.0[m]DCGERH.770.0[m]DCGERH.780.0[m]DCGERH.790.0[m]DCGERH.800.0[m]DCGERH.810.0[m]DCGERH820.0[m]DCGERH.830.0[m]DCGERH.840.0[m]DCGERH.850.0[m]DCGERH.860.0[m]DCGERH.870.0[m]DCGERH.880.0[m]DCGERH.890.0[m]DCGERH.900.0[m]DCGERH.918.0[m]DCGERH.921.7[m]SWCGERH.933.0[m]DCGERH.948.0[m]DCGERH.960.0[m]DCGERH.969.0[m]DCGERH.981.0[m]DCGERH.993.0[m]DCGERH.997.0[m]SWCGERH.1005.0[m]DCGERH.1017.0[m]DCGERH1029.0[m]DCGERH.1041.0[m]DCGERH.1053.0[m]DCGERH.1058.0[m]SWCGERH1065.0[m]DCGERH1077.0[m]DCGERH.1089.0[m]DCGERH.1101.0[m]DCGERH.1118.0[m]DCGERH.1119.0[m]SWCGERH.1125.0[m]DCGERH.1137.0[m]DCGERH.1152.0[m]DCGERH.1167.0[m]DCGERH.1182.0[m]DCGERH.1183.0[m]SWCGERH.1197.0[m]DCGERH1212.0[m]DCGERH.1220.0[m]SWCGERH.1227.0[m]DCGERH.1242.0[m]DCGERH.1257.0[m]DCGERH.1272.0[m]DCGERH.1282.0[m]SWCGERH.1287.0[m]DCGERH.1302.0[m]DCGERH.1314.0[m]DCGERH.1329.0[m]DCGERH.1344.0[m]DCGERH.1345.0[m]SWCGERH.1373.0[m]SWCGERH.1374.0[m]DCGERH.1389.0[m]DCGERH.1404.0[m]DCGERH.1420.0[m]DCGERH.1435.0[m]DCGERH.1450.0[m]DCGERH.1465.0[m]DCGERH.1480.0[m]DCGERH.1494.0[m]DCGERH.1509.0[m]DCGERH.1510.0[m]SWCGERH.1524.0[m]DCGERH.1539.0[m]DCGERH.1554.0[m]DCGERH.1554.0[m]SWCGERH.1569.0[m]DCGERH.1584.0[m]DCGERH.1599.0[m]DCGERH.1600.0[m]SWCGERH.1614.0[m]DCGERH.1629.0[m]DCGERH.1644.0[m]DCGERH.1659.0[m]DCGERH.1660.0[m]SWCGERH.1674.0[m]DCGERH.1696.7[m]DCGERH.1704.0[m]DCGERH.1719.0[m]DCGERH.1734.0[m]DCGERH.1749.0[m]DCGERH.1749.0[m]SWCGERH.1761.0[m]DCGERH.1764.0[m]DCGERH.1773.0[m]DCGERH.1779.0[m]DCGERH.1794.0[m]DCGERH.1794.4[m]SWCGERH.1809.0[m]DCGERH.1824.0[m]DCGERH.1829.4[m]DCGERH.1839.0[m]DCGERH.1854.0[m]DCGERH.1869.0[m]DCGERH.1874.4[m]SWCGERH.1879.4[m]SWCGERH.1883.9[m]SWCGERH.1899.0[m]DCGERH.1914.0[m]DCGERH.1929.0[m]DCGERH.1944.0[m]DCGERH.1951.4[m]SWCGERH.1959.0[m]DCGERH.1974.0[m]DCGERH.1989.0[m]DCGERH.2004.0[m]DCGERH.2019.0[m]DCGERH.2034.0[m]DCGERH.2049.0[m]DCGERH.2064.0[m]DCGERH.2079.0[m]DCGERH.2094.0[m]DCGERH.2109.0[m]DCGERH.2124.0[m]DCGERH.2134.4[m]SWCGERH.2139.0[m]DCGERH.2154.0[m]DCGERH2169.4[m]SWCGERH.2184.0[m]DCGERH.2199.0[m]DCGERH.2228.4[m]SWCGERH.2274.0[m]DCGERH.2289.0[m]DCGERH.2319.0[m]DCGERH.2332.4[m]SWCGERH.2349.0[m]DCGERH.2364.0[m]DCGERH.2374.4[m]SWCGERH.2379.0[m]DCGERH.2394.0[m]DCGERH.2409.0[m]DCGERH.2413.1[m]SWCGERH.2424.0[m]DCGERH.2439.0[m]DCGERH.2445.0[m]DCGERH.2452.4[m]SWCGERH.2460.0[m]DCGERH.2463.0[m]CGERH.2471.1[m]CGERH.2477.3[m]CGERH.2481.0[m]CGERH.2481.0[m]CGERH.2488.9[m]CGERH.2504.2[m]CGERH.2505.0[m]DCGERH.2512.0[m]CGERH.2523.7[m]CGERH.2535.0[m]DCGERH.2543.0[m]CGERH.2550.0[m]DCGERH.2560.4[m]CGERH.2565.0[m]DCGERH.2567.1[m]CGERH.2576.8[m]CGERH.2584.6[m]CGERH.2591.1[m]CGERH.2594.5[m]CGERH.2601.0[m]DCGERH.2607.3[m]SWCGERH.2625.0[m]DCGERH.2634.0[m]DCGERH.2643.0[m]DCGERH2668.5[m]SWCGERH.2685.0[m]DCGERH.2714.0[m]SWCGERH.2744.0[m]SWCGERH.2775.0[m]DCGERH.2790.0[m]DCGERH.2792.0[m]SWCGERH.2800.0[m]DCGEAR -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet3394204201068106811121112188522262338245024802480255726422737 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.42 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf3.68 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.29pdf0.21 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf39.83 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.02484249316.0Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.065Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0205270000.7690.64727300 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL GR3371760CBL VDL GR15002455CBL VDL GR22682748CST9211761CST17942452CST26732799DLL GR SP24572668ISF BHC GR8992457ISF BHC MSFL GR339916ISF BHC MSFL GR24572801LDL CNL NGT24572802LDL GR4142458RFT GR24802664RFT GR26732781SHDT GR8992803VELOCITY6002760 -
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 formasjonstestCONDUCTOR30414.036417.00.00LOTSURF.COND.20900.026918.01.39LOTINTERM.13 3/81759.017 1/21774.01.49LOTINTERM.9 5/82455.012 1/42460.01.86LOTLINER72797.08 1/22800.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling9181.171000.0WATER BASED11401.121100.0WATER BASED12611.141300.0WATER BASED14581.16800.0WATER BASED16921.16800.0WATER BASED17691.121100.0WATER BASED17741.16900.0WATER BASED20091.121500.0WATER BASED22781.201300.0WATER BASED24601.371500.0WATER BASED25871.231200.0WATER BASED26291.231100.0WATER BASED26771.231100.0WATER BASED27251.231600.0WATER BASED28001.231400.0WATER BASED -
Trykkplott
Trykkplott Porertrykksdataene kommer fra logging i brønnen hvis ingen annen kilde er oppgitt. I noen brønner der trykk ikke er logget, er det brukt informasjon fra formasjonstester eller brønnspark. Trykkdataene er rapportert inn til Oljedirektoratet og videre prosessert og kvalitetssikret av IHS Markit.Trykkplott Dokument navnDokument formatDokumentstørrelse [MB]pdf0.28