6507/11-3
Eksport: PDF
-
Generell informasjon
-
Brønnhistorie
GeneralWell 6507/11-3 was designed to test the Beta Fault compartment of the Midgard Discovery off shore Mid Norway. The Beta segment is a part of the Midgard horst. This horst is defined by NNV trending normal faults. It is separated from the other compartments by a ENE trending cross fault and exhibits true vertical closure at Base Cretaceous level. The primary target was reservoir rocks of the Middle Jurassic Fangst Group with the objective to establish the GWC within a good sand and to perform a DST in a formation not previously being tested (the Ile Formation). The location was chosen relatively high on the structure in case the hydrocarbon contact for Beta was different from what was seen in the Alpha and Gamma structures. The well should reach Triassic rocks or drill to 500 m below the coal reflector. The proposed depth was 3250 m. The pre-drill classification of the well was wildcat.The well is Type Well for the Ile and Not Formation of the Fangst Group.Operations and resultsWell 6507/11-3 was spudded with the semi-submersible installation Treasure Saga on 3 June 1985 and drilled to TD at 3250 m in the Triassic Grey Beds. While drilling the reservoir, mud weight had to be raised gradually to 1.6 g/cm3 due to high trip gas. Approximately 2 weeks were lost due to a work conflict. The well was drilled with spud mud down to 421 m, with gel mud from 421 m to 868 m, with gypsum/polymer mud from 868 m to 2615 m, and with gel mud from 2615 m to TD.The average background gas down to the 20" casing point was 0.4% to 0.8% with peaks at 505 m (3.43%), 540 m (1.08%), 576 m (1.76%) and 663 m (1.97%). Methane was the only gas component present. The well proved mainly claystones down to the Fangst Group. The Cainozoic with a total thickness of 1771 m overlies a 271 m Cretaceous sequence. Late Jurassic consisted of 14.5 m hot shale of the Spekk Formation and 39.5 m of silty claystones of the Melke Formation. The Fangst Group consisted of the Garn, Not, and Ile Formations as in the other wells in the area. The Garn and the Ile Formations had very good reservoir properties, while the Not Formation is a non-reservoir zone in between. Two mudstone SWC's at 2170 m and 2197 m in the Shetland Group had oil shows. The first oil shows below this depth were observed in the Melke Formation at 2393 m. The Fangst Group had gas above a thin oil zone. The GOC was encountered at 2514 m, and the OWC at 2525.5 m. There were no shows below OWC.Six cores were cut in the Fangst Group and another three cores were cut in the Tilje Formation. Six segregated fluid samples were taken on FMT; four at 2426.5 m, 2456 m, 2473.5 m, and 2512 m in the gas/condensate zone, and at two at 2516.3 m and at 2520 m in the oil zone.The well was permanently abandoned on 15 August 1985 as an oil/gas discoveryTestingThree drill stem tests were performed; one in the oil zone and two in the gas zone.DST 1 tested the oil zone from 2519.0 m to 2520.5 m. Rates were increased in steps up to 1500 Sm3/day to investigate gas coning behaviour. The GOR without gas coning was ca 140 Sm3/Sm3. Stock tank oil gravity was 0.8506 g/cm3.DST 2 tested the interval 2495.7 m to 2508.7 in the gas zone and flowed 564000 Sm3 gas/day through a 14.3 mm choke in the main flow. The gas/condensate ratio of the fluid was 6850 Sm3/Sm3.DST 3 tested the interval from 2413.0 m to 2419.5 m in the gas zone and flowed 584000 Sm3 gas/day through a 14.3 mm choke in the main flow. The gas/condensate ratio of the fluid was 7100 Sm3/Sm3. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]430.003250.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12428.02437.5[m ]22437.52456.0[m ]32456.02465.3[m ]42467.02494.5[m ]52494.52522.0[m ]62522.02536.8[m ]72636.02643.9[m ]82650.02660.2[m ]92668.52677.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]134.2Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
-
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST12519.002521.0001.08.1985 - 16:30YESDSTDST22495.002508.0005.08.1985 - 17:00YESDSTDST32412.502419.5010.08.1985 - 10:53YES -
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 formasjonstestCONDUCTOR30414.036449.00.00LOTSURF.COND.20849.026868.01.52LOTINTERM.13 3/81903.017 1/21918.01.83LOTINTERM.9 5/82600.012 1/42615.01.79LOTOPEN HOLE3250.08 1/23250.00.00LOT -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.02519252125.42.02496250931.83.02413242038.1Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.023.0008.00023.000902.024.00012.00020.000903.025.00010.00024.00090Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.01490295000.8470.7201982.014800000.6903.017400000.670 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL7301902CBL VDL17002599CDL CNL GR19022615CDL CNL GR26593242COREGUN24282677CORGUN26352679DIFL LS BHC CDL CBL GR8491918DIFL LS BHC GR19022615DIFL LS BHC GR26593243DIPLOG19022609DIPLOG26593243DLL MLL GR23202610FMT24142536FMT24423226MWD - GR RES DIR4153246VSP17503250 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet31631613951754175419631963203820872087229022902347235823582373241224122457247225362536263028253193 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]pdf3.57 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf14.82 -
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 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4491.0547.025.0WATER BASED07.06.19857631.1750.029.0WATER BASED10.06.19858681.1843.033.0WATER BASED10.06.19858731.1514.025.0WATER BASED02.07.198513001.2016.020.0WATER BASED02.07.198515801.2318.022.0WATER BASED02.07.198519181.4067.019.0WATER BASED03.07.198519181.4060.018.0WATER BASED04.07.198519181.4012.018.0WATER BASED08.07.198519181.4067.019.0WATER BASED03.07.198519181.4060.018.0WATER BASED04.07.198519181.4012.018.0WATER BASED08.07.198519181.4065.025.0WATER BASED02.07.198521511.5325.019.0WATER BASED08.07.198523181.5337.023.0WATER BASED08.07.198524021.6036.017.0WATER BASED11.07.198525451.3058.010.0WATER BASED29.07.198526231.2617.010.0WATER BASED22.07.198526441.2117.010.0WATER BASED22.07.198526801.2017.010.0WATER BASED22.07.1985 -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie1910.0[m]DCSTRAT1920.0[m]SWCSTRAT1930.0[m]DCSTRAT1950.0[m]DCSTRAT1965.0[m]SWCSTRAT1974.0[m]SWCSTRAT1980.0[m]DCSTRAT2003.0[m]SWCSTRAT2010.0[m]DCSTRAT2022.0[m]SWCSTRAT2026.0[m]SWCSTRAT2050.0[m]DCSTRAT2060.0[m]SWCSTRAT2070.0[m]DCSTRAT2083.0[m]SWCSTRAT2086.0[m]SWCSTRAT2091.0[m]SWCSTRAT2109.0[m]SWCSTRAT2120.0[m]DCSTRAT2130.0[m]SWCSTRAT2143.0[m]SWCSTRAT2150.0[m]DCSTRAT2160.0[m]DCSTRAT2170.0[m]SWCSTRAT2180.0[m]DCSTRAT2190.0[m]DCSTRAT2197.0[m]SWCSTRAT2210.0[m]DCSTRAT2220.0[m]DCSTRAT2227.0[m]SWCSTRAT2240.0[m]DCSTRAT2251.0[m]SWCSTRAT2260.0[m]DCSTRAT2267.0[m]SWCSTRAT2280.0[m]DCSTRAT2285.0[m]SWCSTRAT2289.0[m]SWCSTRAT2295.0[m]DCSTRAT2295.0[m]SWCSTRAT2310.0[m]DCSTRAT2320.0[m]DCSTRAT2331.0[m]SWCSTRAT2340.0[m]DCSTRAT2359.0[m]SWCSTRAT2366.5[m]SWCSTRAT2372.0[m]SWCSTRAT2383.0[m]SWCSTRAT2393.5[m]SWCSTRAT2404.0[m]SWCSTRAT2413.0[m]SWCSTRAT2420.0[m]SWCSTRAT2439.6[m]CSTRAT2457.0[m]CSTRAT2465.0[m]CSTRAT2467.0[m]CSTRAT2475.0[m]CSTRAT2481.7[m]CSTRAT2491.1[m]CSTRAT2499.0[m]CSTRAT2508.4[m]CSTRAT2517.5[m]CSTRAT2530.0[m]CSTRAT2536.7[m]CSTRAT2539.0[m]DCSTRAT2546.0[m]SWCSTRAT2551.0[m]DCSTRAT2559.5[m]SWCSTRAT2569.0[m]DCSTRAT2579.0[m]SWCSTRAT2588.0[m]SWCSTRAT2600.0[m]SWCSTRAT2611.0[m]DCSTRAT2620.0[m]DCSTRAT2631.5[m]SWCSTRAT2634.0[m]CSTRAT2642.8[m]CSTRAT2645.0[m]SWCSTRAT2653.9[m]CSTRAT2669.0[m]CSTRAT2676.7[m]CSTRAT2677.5[m]SWCSTRAT2682.5[m]SWCSTRAT2686.0[m]DCSTRAT2695.0[m]DCSTRAT2701.0[m]DCSTRAT2707.0[m]DCSTRAT2718.0[m]SWCSTRAT2727.5[m]SWCSTRAT2734.0[m]DCSTRAT2747.0[m]SWCSTRAT2749.0[m]DCSTRAT2758.0[m]DCSTRAT2761.0[m]SWCSTRAT2773.0[m]DCSTRAT2779.0[m]DCSTRAT2785.0[m]DCSTRAT2790.7[m]SWCSTRAT2800.0[m]DCSTRAT2803.0[m]SWCSTRAT2815.0[m]DCSTRAT2818.3[m]SWCSTRAT2821.0[m]DCSTRAT2825.5[m]SWCSTRAT2830.0[m]SWCSTRAT2842.0[m]DCSTRAT2848.0[m]DCSTRAT2854.0[m]DCSTRAT2863.0[m]DCSTRAT2869.0[m]DCSTRAT2878.0[m]DCSTRAT2884.0[m]DCSTRAT2887.0[m]SWCSTRAT2899.0[m]DCSTRAT2906.5[m]SWCSTRAT2913.0[m]SWCSTRAT2916.0[m]SWCSTRAT2919.6[m]SWCSTRAT2924.5[m]SWCSTRAT2929.7[m]SWCSTRAT2938.0[m]DCSTRAT2943.9[m]SWCSTRAT2953.0[m]DCSTRAT2957.6[m]SWCSTRAT2968.0[m]DCSTRAT2973.2[m]SWCSTRAT2980.0[m]DCSTRAT2989.0[m]DCSTRAT2998.4[m]SWCSTRAT3001.0[m]DCSTRAT3010.0[m]DCSTRAT3016.0[m]DCSTRAT3022.0[m]DCSTRAT3031.0[m]DCSTRAT3034.0[m]SWCSTRAT3041.7[m]SWCSTRAT3052.0[m]DCSTRAT3058.0[m]DCSTRAT3064.0[m]DCSTRAT3072.0[m]SWCSTRAT3079.0[m]DCSTRAT3085.0[m]DCSTRAT3091.0[m]SWCSTRAT3100.0[m]DCSTRAT3106.0[m]DCSTRAT3114.5[m]SWCSTRAT3121.0[m]DCSTRAT3127.0[m]DCSTRAT3136.0[m]DCSTRAT3139.0[m]SWCSTRAT3142.0[m]SWCSTRAT3148.0[m]DCSTRAT3157.0[m]DCSTRAT3165.2[m]SWCSTRAT3169.0[m]DCSTRAT3178.0[m]DCSTRAT3182.0[m]SWCSTRAT3189.5[m]SWCSTRAT3196.5[m]SWCSTRAT3203.5[m]SWCSTRAT3213.0[m]SWCSTRAT3220.0[m]DCSTRAT3223.0[m]SWCSTRAT3232.0[m]DCSTRAT3241.0[m]DCSTRAT3247.0[m]DCSTRAT3250.0[m]DCSTRAT