16/7-2
Eksport: PDF
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Generell informasjon
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Brønnhistorie
GeneralThe 16/7-2 well was drilled on the western flank of the Utsira High in the North Sea. The primary objective was to test the presence of a stratigraphic trap in Paleocene sandstones. Secondary objectives were to test the Mesozoic structure for possible Triassic sands, and also to test the Zechstein carbonate and Rotliegendes sandstone plays. The well was the first to be drilled in connection with the 6th. License Round awards.Operations and resultsWell 16/7-2 was spudded with the semi-submersible installation Glomar Biscay II on 11 January 1982 and drilled to TD at 3146 m in Early Permian, Rotliegendes Group sediments. Drilling of the 36" and 26" holes went forth without any specific problems. While cementing the 20" casing, the cement slurry was overdisplaced. A remedial squeeze job was necessary. Problems also occurred when logging the 12 1/4" section due to tight hole. In the 8 1/2" inch section problems with the BOP choke valve/controls led to close to 9 days lost time, a major reason for the 38% non-productive time in this well. The well was drilled with seawater gel down to 171 m, and with lignite/lignosulphonate mud from 171 m to TD.Top Lista Formation was encountered at 2268 m and contained 9.5 m net of gas from 2292 m in thin sandstone intervals, interbedded with shales. The average porosity is 22% and average water saturation is 47% in the net sand. The Heimdal Formation sandstones were massive, of very good reservoir quality, and contained 13.5 m of net gas sand in a gross gas sand interval of 13.5 m down to the gas/water contact at 2352 m. The average porosity is 26% and average water saturation is 34%. The well was drilled on the crest of a structurally limited trap and the gas accumulation is not connected to the 15/9 Paleocene Gamma discovery. In the Jurassic, 19 m of water wet Hugin Formation sand was encountered. The Zechstein dolomites and Rotliegendes sandstones were also water wet and of poor reservoir quality. The well also penetrated a 5 m thick sequence of the Permian Kupferschiefer at 3112 m.Three cores were taken in the Lista and Heimdal Formations from 2300 m to 2376 m. A fourth core core was taken from 2675 m to 2693 m in the Middle Jurassic Hugin Formation. MFT fluid samples were taken at 2680.5 m (content: mud filtrate), 2313 m (mud filtrate), and 2341 m (gas condensate; single flash to stock tank conditions gave GOR = 3042 Sm3/Sm3 and liquid gravity = 48.3 deg API).The well was permanently abandoned on 30 March 1982 as a gas discovery.TestingNo drill stem test was performed -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?NOBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]180.003146.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12300.02301.5[m ]22347.02356.5[m ]32356.52375.0[m ]42675.02690.8[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]45.3Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie600.0[m]DC700.0[m]DC701.0[m]CSNEA715.4[m]CSNEA715.8[m]CSNEA716.7[m]CSNEA717.7[m]CSNEA718.4[m]CSNEA720.4[m]CSNEA720.5[m]CSNEA721.5[m]CSNEA800.0[m]DC815.4[m]CSNEA817.8[m]CSNEA818.1[m]CSNEA900.0[m]DC1000.0[m]DC1100.0[m]DC1200.0[m]DC1300.0[m]DC1400.0[m]DC1500.0[m]DC1600.0[m]DC1700.0[m]DC1800.0[m]DC1900.0[m]DC1930.0[m]DC1960.0[m]DC1990.0[m]DC2020.0[m]DC2050.0[m]DC2080.0[m]DC2110.0[m]DC2140.0[m]DC2170.0[m]DC2200.0[m]DC2230.0[m]DC2235.0[m]DC2240.0[m]DC2250.0[m]DC2255.0[m]DC2260.0[m]DC2290.0[m]DC2295.0[m]SWC2298.0[m]SWC2300.0[m]DC2300.6[m]C2301.2[m]C2304.5[m]SWC2310.0[m]SWC2311.0[m]SWC2311.0[m]DC2315.0[m]SWC2320.0[m]SWC2320.0[m]DC2324.0[m]SWC2326.0[m]SWC2329.0[m]DC2338.0[m]DC2339.0[m]SWC2339.0[m]SWC2347.0[m]DC2359.0[m]DC2363.5[m]SWC2365.0[m]DC2366.5[m]SWC2375.5[m]SWC2378.8[m]SWC2380.0[m]SWC2395.0[m]DC2424.0[m]SWC2425.0[m]DC2455.0[m]DC2485.0[m]DC2515.0[m]DC2545.0[m]DC2575.0[m]DC2581.0[m]DCRRI2581.0[m]SWC2587.0[m]DC2590.0[m]DCRRI2593.0[m]SWC2596.0[m]DC2596.0[m]DCRRI2605.0[m]DC2610.0[m]DC2611.0[m]DCRRI2626.0[m]DCRRI2626.0[m]DC2635.0[m]DC2641.0[m]DCRRI2645.0[m]SWC2656.0[m]DCRRI2665.0[m]DC2668.0[m]DCRRI2675.0[m]C2675.5[m]DC2678.1[m]CRRI2679.0[m]C2681.0[m]C2683.0[m]C2685.0[m]C2687.0[m]C2687.6[m]C2688.0[m]C2689.0[m]C2689.2[m]C2689.2[m]C2690.7[m]CRRI2690.8[m]C2691.0[m]SWC2695.0[m]SWC2695.0[m]DC2701.0[m]DCRRI2725.0[m]DC2725.0[m]SWC2752.0[m]DCRRI2755.0[m]DC2785.0[m]DC2815.0[m]DC2845.0[m]DC2851.0[m]DCRRI2875.0[m]DC2875.0[m]SWC2903.0[m]SWC2905.0[m]DC2930.0[m]SWC2935.0[m]DC2965.0[m]DC2974.0[m]SWC2975.2[m]SWC2983.0[m]DCRRI2995.0[m]DC3001.0[m]DCRRI3003.0[m]SWC3013.0[m]SWC3025.0[m]DC3025.0[m]DCRRI3033.2[m]SWC3055.0[m]DC3085.0[m]DC3115.0[m]DC3115.0[m]DCRRI3118.0[m]DCRRI3146.0[m]DC -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet10879410962148214822042268233924232435243525352579257926682668269226923010301031123117 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.52 -
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]pdf0.17pdf0.23 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf16.16pdf58.18pdf47.57pdf7.43pdf5.60pdf3.36pdf0.81 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]4-CAL8222714-CAL100490CBL822473CDL CNL822273CDL CNL11922528CDL FOR CAL4851209DIP22002528DIP25043135DLL MLL822472IEL AC GR5021215IEL AC GR CAL822273IEL AC GR CAL100338IEL AC GR CAL100519IEL AC GR CAL11202391IEL AC GR CAL22852527MFT22952422MFT26752918SWC22902521SWC25453130SWC25813136TEMP1081064VELOCITY5003135 -
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 formasjonstestCONDUCTOR30171.036172.00.00LOTSURF.COND.20502.026522.01.73LOTINTERM.13 3/81201.017 1/21217.01.88LOTINTERM.9 5/82510.012 1/42536.02.00LOTOPEN HOLE3146.08 1/23146.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2501.0648.0waterbased5101.1543.0waterbased7601.1544.0waterbased11501.1045.0waterbased13201.2151.0waterbased14401.2043.0waterbased26501.3454.0waterbased -
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]pdf0.23