6507/11-4
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Generell informasjon
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Brønnhistorie
GeneralWell 6507/11-4 is located ca 3.5 km north-north west of the Midgard Field on the Halten Terrace. The objective was to test the hydrocarbon potential in Jurassic sandstones in a rotated north-south trending fault block. Shallow gas was warned at the following levels: 470-532/539- 601- and 671 m. TD was planned at 2950 m.Operations and resultsWildcat well 6507/11-4 was spudded by the semi-submersible installation Treasure Saga on 16 May 1987, and drilled to TD at 3045 m in the Early Jurassic Aldra Formation (Tilje Formation). Due to excessive deviation during the first 13 m, the TGB was pulled and moved 10 m towards east where the well was re-spudded on May 17. Otherwise, drilling proceeded without significant problems. No shallow gas was encountered at the warned levels. The well was drilled with seawater and hi-vis mud down to 817 m, with gypsum / polymer mud from 817 m to 2655 m, and the remaining 8 1/2" section from 2655 m to TD with gel / polymer mud.The argillaceous Grip Group (Viking Group) was encountered at 2530 m, and the sandy Tomma Formation (Fangst Group) at 2676.5 m RKB. The latter consisted of two sandstone units (Garn and Ile Formations) separated by a more argillaceous unit (Not Formation). The gross sand thickness in the two units was 174 m and the porosity was good. The calculated average values of log porosity and the net to gross ratio for the Garn Formation was 24.6% and 0.96 respectively. The corresponding figures for the Ile Formation were 22.1% and 0.74. The Leka Formation (Ror Formation) consisted mainly of claystone, while claystone and sandstone were alternating in the Aldra Formation (Tilje Formation). Sporadic oil fluorescence were observed in lamellas of silty sandstones in the Late Cretaceous at 2220 m, 2265 m, and 2315 m. No shows were observed in the Jurassic sandstone units. Post-well organic geochemical analysis did not confirm the shows in Late Cretaceous, but revealed a possible occurrence of trace migrated hydrocarbons in cuttings at the base of the Melke Formation at 2675 m.Two cores were cut in the intervals 2564- 2593 m (Melke Formation) and 2685- 2713 m (Garn Formation). No wire line fluid samples were taken.The well was permanently abandoned on 22 June 1987 as a dry well.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]450.003044.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12564.02591.8[m ]22685.02713.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]56.0Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1690.0[m]DCSTRAT1716.0[m]SWCSTRAT1753.0[m]SWCSTRAT1770.0[m]DCSTRAT1803.0[m]SWCSTRAT1823.0[m]SWCSTRAT1828.0[m]SWCSTRAT1857.0[m]SWCSTRAT1862.0[m]SWCSTRAT1863.5[m]SWCSTRAT1910.0[m]DCSTRAT1940.0[m]DCSTRAT1990.0[m]DCSTRAT2016.5[m]SWCSTRAT2018.0[m]SWCSTRAT2046.0[m]SWCSTRAT2063.0[m]SWCSTRAT2170.0[m]DCSTRAT2180.0[m]DCSTRAT2190.0[m]DCSTRAT2200.0[m]DCSTRAT2210.0[m]DCSTRAT2221.0[m]SWCSTRAT2230.0[m]DCSTRAT2240.0[m]DCSTRAT2255.0[m]SWCSTRAT2270.0[m]DCSTRAT2283.0[m]SWCSTRAT2290.0[m]DCSTRAT2300.0[m]DCSTRAT2312.5[m]SWCSTRAT2330.0[m]DCSTRAT2348.0[m]SWCSTRAT2360.0[m]DCSTRAT2367.5[m]SWCSTRAT2380.0[m]DCSTRAT2390.0[m]DCSTRAT2397.5[m]SWCSTRAT2410.0[m]DCSTRAT2425.0[m]SWCSTRAT2440.0[m]DCSTRAT2450.0[m]DCSTRAT2460.0[m]DCSTRAT2470.0[m]SWCSTRAT2477.0[m]SWCSTRAT2483.0[m]SWCSTRAT2486.0[m]SWCSTRAT2500.0[m]DCSTRAT2512.5[m]SWCSTRAT2521.0[m]SWCSTRAT2530.0[m]SWCSTRAT2541.0[m]SWCSTRAT2549.0[m]DCSTRAT2562.0[m]SWCSTRAT2566.0[m]CSTRAT2579.1[m]CSTRAT2584.5[m]SWCSTRAT2591.0[m]CSTRAT2600.0[m]DCSTRAT2610.0[m]SWCSTRAT2630.0[m]DCSTRAT2642.0[m]SWCSTRAT2660.0[m]DCSTRAT2675.0[m]SWCSTRAT2685.1[m]CSTRAT2687.2[m]CSTRAT2733.0[m]SWCSTRAT2745.0[m]SWCSTRAT2751.3[m]SWCSTRAT2759.0[m]DCSTRAT2771.0[m]DCSTRAT2783.0[m]DCSTRAT2792.0[m]DCSTRAT2801.0[m]DCSTRAT2816.0[m]SWCSTRAT2838.0[m]SWCSTRAT2854.5[m]SWCSTRAT2872.5[m]SWCSTRAT2887.5[m]SWCSTRAT2900.0[m]DCSTRAT2909.0[m]DCSTRAT2918.0[m]DCSTRAT2930.0[m]DCSTRAT2939.0[m]DCSTRAT2949.0[m]SWCSTRAT2966.5[m]SWCSTRAT2984.0[m]DCSTRAT2991.0[m]SWCSTRAT2999.0[m]DCSTRAT3008.0[m]DCSTRAT3020.0[m]DCSTRAT3028.0[m]SWCSTRAT3041.0[m]DCSTRAT3044.0[m]DCSTRAT -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet3143141380201520152066213525222530253025352677267727322747286628662992 -
Geokjemisk informasjon
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Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.40pdf0.26 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf5.48pdf4.08pdf13.11 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]ACBL VDL GR4531488ACBL VDL GR12102500CDL GR CAL14882369CNL CDL GR CAL25003041COREGUN15252489COREGUN28053033DENSITY25003041DIFL LSBHC GR CAL14882389DIFL LSBHC GR CAL23352518DIFL LSBHC GR CAL25003041FMT PRESSURE26873025MWD - GR RES DIR TEMP4443045SHDT25133039SPECTRALOG25003036VSP25013041 -
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 formasjonstestCONDUCTOR30436.036444.00.00LOTSURF.COND.20802.026817.01.49LOTINTERM.13 3/81489.017 1/21506.01.70LOTINTERM.9 5/82503.012 1/42518.01.80LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling8171.1310.016.8WATER BASED25.05.19878171.1025.021.1WATER BASED29.05.198710631.1019.09.6WATER BASED29.05.198712811.1114.08.2WATER BASED01.06.198715061.1415.05.8WATER BASED01.06.198717401.2517.08.2WATER BASED01.06.198719291.3523.09.1WATER BASED03.06.198721791.6030.010.1WATER BASED04.06.198723991.6427.09.6WATER BASED04.06.198725181.6420.07.2WATER BASED09.06.198725181.6425.012.5WATER BASED09.06.198725181.6926.09.6WATER BASED09.06.198725181.6420.07.2WATER BASED09.06.198725181.6621.07.2WATER BASED11.06.198725181.6622.07.2WATER BASED12.06.198725181.6621.06.8WATER BASED09.06.198725501.3013.06.8WATER BASED16.06.198725811.3017.07.7WATER BASED15.06.198726551.3016.06.8WATER BASED15.06.198727131.3114.07.2WATER BASED16.06.198728831.3015.06.3WATER BASED16.06.198729921.3016.05.8WATER BASED18.06.198730451.3017.07.7WATER BASED18.06.198730451.3017.07.7WATER BASED24.06.1987 -
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