7120/5-1
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Generell informasjon
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Brønnhistorie
GeneralWildcat well 7120/5-1 was drilled west of the Snøhvit Field on a separate structure, the Alpha structure in the Hammerfest Basin. The main objective of the well was to test possible hydrocarbon accumulations in the Alpha structure of Middle to Lower Jurassic age. A secondary objective was to drill into rocks of upper Triassic age at a prognosed depth of 3047 m.Operations and resultsWell 7120/5-1 was spudded by Smedvigs semi-submersible rig West Vanguard 17 April 1985, and completed 6 June 1985. The well was drilled with spud mud down to 885 m and with gypsum/polymer mud from 885 m to TD. Seventy-four meter below the 20" casing shoe, after the well had penetrated a fault at 954 m, high background gas with heavy components was encountered. The high background gas persisted throughout this section down to the 13 3/8" casing point at 1975 m. Drilling went on without any serious problems.The lithology in the Tertiary and Cretaceous comprises clay with scattered Lime-, Dolomite- and Siltstone layers. The Jurassic Stø Formation was encountered at 2285 m represented by clayey sands, while the clean part of that formation came in at 2341 m. Nordmela Formation was found at 2427 m, and top of Triassic rocks, Fruholmen Formation, came in at 2648 m. Both Stø- and Nordmela Formations were water bearing, but with good oil shows. Geochemical analyses of extracts from this interval showed a waxy oil. In a sandy zone between 2405 m to 2420 m high resistivity values were encountered, but RFT tests and pressure measurements gave negative results. Good source potentials were found in mudstones below ca 1900 m. Shales from 1900 m to 2230 m had TOC in the range 1 % - 3.5 %. A 20 m thick, very organic rich shale with 6 - 19 % TOC was encountered from 2251 m to 2271 m in the Hekkingen Formation. Below this level to TD, frequent claystone interbeds had TOC in the range 0.5 % - 5.5 % in cuttings (up to 13.42 % in a swc from 2351.2 m). The highest hydrogen index was seen in the rich Hekkingen shale (200 - 250 mg/g), which correspond to potential for gas with some oil. Six cores were cut in the interval 2286- 2425.5 m, all in the Stø Formation. Close to all of the Stø Formation was cored. A segregated RFT sample was taken at 2346 m. It recovered water with some gas.The well was permanently abandoned on 6 June 1985 as dry well with shows.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]380.002696.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12286.02312.8[m ]22313.02323.1[m ]32323.02351.0[m ]42351.02377.4[m ]52378.02398.0[m ]62398.02424.7[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]137.9Borekjerner 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]DCGERH510.0[m]DCGERH520.0[m]DCGERH530.0[m]DCGERH540.0[m]DCGERH550.0[m]DCGERH560.0[m]DCGERH570.0[m]DCGERH580.0[m]DCGERH590.0[m]DCGERH600.0[m]DCGERH610.0[m]DCGERH620.0[m]DCGERH630.0[m]DCGERH640.0[m]DCGERH650.0[m]DCGERH660.0[m]DCGERH670.0[m]DCGERH680.0[m]DCGERH690.0[m]DCGERH700.0[m]DCGERH710.0[m]DCGERH720.0[m]DCGERH730.0[m]DCGERH740.0[m]DCGERH750.0[m]DCGERH760.0[m]DCGERH770.0[m]DCGERH780.0[m]DCGERH790.0[m]DCGERH800.0[m]DCGERH810.0[m]DCGERH820.0[m]DCGERH830.0[m]DCGERH840.0[m]DCGERH870.0[m]DCGERH880.0[m]DCGERH890.0[m]DCGERH901.0[m]SWCGERH910.0[m]DCGERH920.0[m]DCGERH930.0[m]DCGERH940.0[m]DCGERH950.0[m]DCGERH960.0[m]DCGERH970.0[m]DCGERH980.0[m]DCGERH990.0[m]DCGERH1000.0[m]SWCGERH1010.0[m]DCGERH1020.0[m]DCGERH1030.0[m]DCGERH1040.0[m]DCGERH1050.0[m]DCGERH1060.0[m]DCGERH1070.0[m]DCGERH1080.0[m]DCGERH1124.0[m]DCGERH1136.0[m]DCGERH1148.0[m]DCGERH1163.0[m]DCGERH1205.0[m]SWCGERH1209.0[m]SWCGERH1234.0[m]SWCGERH1256.0[m]DCGERH1270.0[m]SWCGERH1292.0[m]DCGERH1304.0[m]DCGERH1316.0[m]DCGERH1328.0[m]DCGERH1340.0[m]DCGERH1352.0[m]DCGERH1364.0[m]DCGERH1376.0[m]DCGERH1388.0[m]DCGERH1406.0[m]DCGERH1412.0[m]DCGERH1448.0[m]DCGERH1460.0[m]DCGERH1472.0[m]DCGERH1484.0[m]DCGERH1496.0[m]DCGERH1508.0[m]DCGERH1520.0[m]DCGERH1532.0[m]DCGERH1544.0[m]DCGERH1565.0[m]SWCGERH1580.0[m]DCGERH1592.0[m]DCGERH1604.0[m]DCGERH1616.0[m]DCGERH1628.0[m]DCGERH1643.0[m]DCGERH1663.0[m]SWCGERH1673.0[m]DCGERH1688.0[m]DCGERH1703.0[m]DCGERH1718.0[m]DCGERH1737.0[m]SWCGERH1748.0[m]DCGERH1763.0[m]DCGERH1778.0[m]DCGERH1801.0[m]SWCGERH1812.0[m]SWCGERH1823.0[m]DCGERH1860.0[m]SWCGERH1883.0[m]DCGERH1906.0[m]SWCGERH1928.0[m]DCGERH1950.0[m]SWCGERH1973.0[m]DCGERH1988.0[m]DCGERH2000.0[m]DCGERH2018.0[m]DCGERH2033.0[m]DCGERH2048.0[m]DCGERH2063.0[m]DCGERH2078.0[m]DCGERH2100.0[m]SWCGERH2123.0[m]DCGERH2138.0[m]DCGERH2150.0[m]SWCGERH2168.0[m]DCGERH2183.0[m]DCGERH2200.0[m]SWCGERH2210.0[m]SWCGERH2228.0[m]DCGERH2242.0[m]SWCGERH2253.0[m]SWCGERH2261.5[m]SWCGERH2267.0[m]SWCGERH2276.0[m]DCRRI2284.0[m]SWCGERH2286.1[m]CRRI2289.2[m]CRRI2292.0[m]CRRI2295.2[m]CRRI2297.9[m]CRRI2299.2[m]CRRI2301.4[m]CRRI2303.0[m]DCGERH2304.6[m]CRRI2306.8[m]CRRI2308.8[m]CRRI2311.4[m]CRRI2312.0[m]DCGERH2312.4[m]CRRI2313.6[m]CRRI2314.2[m]CRRI2314.7[m]CRRI2317.6[m]CRRI2318.0[m]DCGERH2320.6[m]CRRI2322.8[m]CRRI2323.6[m]CRRI2325.6[m]CRRI2328.6[m]CRRI2331.9[m]CRRI2333.0[m]DCGERH2334.9[m]CRRI2337.8[m]CRRI2342.0[m]DCGERH2354.0[m]DCGERH2363.0[m]DCGERH2381.0[m]DCGERH2389.5[m]CRRI2391.9[m]CRRI2393.0[m]CICHRON2393.0[m]DCGERH2393.5[m]CRRI2396.0[m]CRRI2397.5[m]CRRI2399.7[m]CRRI2403.2[m]CICHRON2403.6[m]CRRI2405.9[m]CRRI2408.0[m]DCGERH2418.8[m]CRRI2421.8[m]CRRI2426.0[m]SWCGERH2429.0[m]SWCGERH2435.0[m]DCRRI2435.0[m]DCRRI2441.0[m]DCRRI2441.0[m]DCRRI2444.0[m]DCGERH2447.0[m]DCRRI2447.0[m]DCRRI2453.0[m]DCRRI2453.0[m]DCRRI2456.0[m]DCGERH2459.0[m]DCRRI2459.0[m]DCRRI2465.0[m]DCRRI2465.0[m]DCRRI2468.0[m]DCGERH2477.0[m]DCRRI2477.0[m]DCRRI2480.0[m]DCGERH2483.0[m]DCRRI2495.0[m]DCRRI2495.0[m]DCRRI2501.0[m]DCRRI2501.0[m]DCRRI2506.0[m]SWCGERH2528.0[m]DCGERH2540.0[m]DCGERH2552.0[m]DCGERH2588.0[m]DCGERH2600.0[m]DCGERH2654.0[m]SWCGERH2660.0[m]SWCGERH2662.0[m]SWCGERH2666.0[m]SWCGERH2690.0[m]DCGERH2699.0[m]DCGERH -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet3184104101183118312301230217022052248227122852285242725102648 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.53 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf2.68 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.28pdf0.22 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf43.46 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL3401975CST9011960CST16982100DLL22742694DLWD8852607ISF SON MSFL GR SP CAL3182700LDT CNL GR3811976LDT CNL GR NGT19752701RFT HP22862670RFT HP22862416RFT SG22862670RFT SG22862416SHDT8501969SHDT19752701VSP5402685 -
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 formasjonstestCONDUCTOR30381.036386.00.00LOTSURF.COND.20850.026865.01.55LOTINTERM.13 3/81975.017 1/21988.01.47LOTOPEN HOLE2700.012 1/42700.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3821.061000.010.6WATER BASED18.04.19858651.07600.012.0WATER BASED21.04.19858651.251100.011.0WATER BASED25.04.19858651.07WATER BASED29.04.19858651.05800.07.2WATER BASED29.04.19858651.241100.010.2WATER BASED26.04.19858651.07WATER BASED29.04.19858651.05800.07.2WATER BASED29.04.19858651.241100.010.2WATER BASED26.04.19858651.251100.011.0WATER BASED25.04.19858851.05800.07.6WATER BASED29.04.198510821.081300.08.9WATER BASED30.04.198512991.101200.013.1WATER BASED02.05.198514401.111100.08.9WATER BASED02.05.198516371.171200.08.9WATER BASED03.05.198516661.221200.08.0WATER BASED06.05.198517881.221300.08.0WATER BASED06.05.198518431.221300.08.0WATER BASED06.05.198519181.225.51900.0WATER BASED08.05.198520891.151100.05.1WATER BASED14.05.198522501.151100.05.0WATER BASED20.05.198522861.241100.05.0WATER BASED20.05.198523301.241500.06.4WATER BASED20.05.198523681.241500.05.9WATER BASED20.05.198523781.241500.05.9WATER BASED21.05.198524111.241600.06.8WATER BASED22.05.198524251.241500.05.9WATER BASED23.05.198524561.241500.05.9WATER BASED24.05.198525451.241600.05.9WATER BASED28.05.198525811.241600.05.5WATER BASED28.05.198526131.241700.07.2WATER BASED28.05.198526811.241800.05.1WATER BASED28.05.198527001.241800.06.3WATER BASED29.05.198527001.241700.06.3WATER BASED30.05.198527001.241700.07.6WATER BASED31.05.198527001.241700.07.6WATER BASED31.05.198527001.241700.06.3WATER BASED30.05.1985 -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet2379.35[m ]2401.65[m ]2405.65[m ]2423.65[m ] -
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]PDF0.27