2/7-22
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Generell informasjon
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Brønnhistorie
GeneralWell 2/7-22 was designed to drill a Late Jurassic prospect as the first commitment well in license 145.The prospect was a structural play defined at an intra-Jurassic level, located to the south-west of the Eldfisk South oil field in the Central Graben. A number of alternative outcomes were modelled to describe the uncertainty in the geological model. The most likely outcome predicted, was for a Jurassic non-marine reservoir section. The large vertical relief of the structure (550 m) also permitted the possibility of an additional lower (Permian) reservoir section. An extensive sidewall-coring program was designed.Operations and resultsWildcat well 2/7-22 was spudded 17 May 1990 by the semi-submersible installation Ross Isle and completed 15 October 1990 at a depth of 4750 m in interbedded sandstones and mudstones of indeterminate pre-Jurassic age. The well thus fulfilled the geological commitment. The well was drilled with seawater and hi-vis pills down to 1092 m, with ester based Petrofree mud from 1092 m to 2970 m, and with Enviromul oil based mud from 2970 m to TD. No shallow gas was encountered in the well. No conventional cores were cut. Due to hard formation sidewall core recovery was poor, and for recovered sidewall cores the depths are uncertain due to technical problems. The well was a gas discovery having encountered a 14 m pay zone in clean sands of indeterminate age with a hydrocarbon column being smaller than prognosed. A gas/water contact was encountered at 4502 m. The total reservoir thickness is 66.5 m. The Late Jurassic Mandal formation came in 218 m deeper than prognosed. One was tentatively trying to date the rocks below the Jurassic sequence, but these rocks are classified as indeterminate. The reservoir rocks are probably an analogue to the Embla alluvial fan complex. Wireline RFT samples were taken at 4494 and 4547 m. The well was permanently plugged and abandoned as a gas/condensate discovery.TestingOne DST test was performed in the interval 4489 to 4496 m. The well flowed 207 Sm3 condensate /day and 347 Sm3 water /day through a 12.7 mm choke. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1110.004750.00 -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie4323.0[m]DCOD -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTDST14489.004496.0030.09.1990 - 16:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet9316072968296829813031307630923092314035973976399240864086422543274452445244704480 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.59 -
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]pdf0.27pdf0.23 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf1.67pdf22.31 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.04484449112.7Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.024.000163Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.01972327000.7900.8001181 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]B.PLUG02710CBL VDL GR450675CBL VDL GR27304185CBL VDL GR40354295CBL VDL GR41764291CBL VDL GR41874295CBL VDL GR CCL42124515CCL38683984CHECK SHOT7504290CHECK SHOT42904740CST GR47424315CST GR47424315DIL BHC GR41924294DIL BHC GR42964650DIL BHC GR45744752DIL LSS GR952977DIL LSS GR27914201G.RING JB C.RETAINER04183G.RING JB/C RETAINER45154515JB B.PLUG PUNCHER03880JB C.RETAINER42934293LDL CNL GR29714203LDL CNL GR41924296LDL CNL NGT42964652LDL CNL NGT45904754OBDT GR42964755REF.G.RING JB PRO.PACKER44894496RFT GR00RFT GR44894739RFT GR44894639RFT GR45474547 -
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 formasjonstestCONDUCTOR30224.036227.00.00LOTINTERM.201092.0261100.01.95LOTINTERM.13 3/82970.017 1/22978.02.09LOTINTERM.9 5/84192.012 1/44200.02.14LOTLINER74292.08 1/24293.02.15LOTLINER4 1/24750.05 7/84750.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1160.00WATER BASED21.05.19904190.00WATER BASED21.05.19908120.00WATER BASED21.05.19909681.06WATER BASED28.05.199011001.5274.013.0WATER BASED29.05.199011001.20WATER BASED23.05.199011000.00WATER BASED21.05.199011001.40WATER BASED23.05.199011001.06WATER BASED25.05.199011001.06WATER BASED28.05.199011001.2090.02.4WATER BASED28.05.199012861.5056.014.4WATER BASED30.05.199019001.6884.014.9WATER BASED31.05.199023601.6889.017.8WATER BASED05.06.199027101.9999.014.9WATER BASED10.10.199027501.9892.012.0WATER BASED09.10.199029071.7094.015.8WATER BASED05.06.199029781.7181.016.3WATER BASED12.06.199029781.7183.016.8WATER BASED06.06.199029781.7183.016.8WATER BASED07.06.199029781.7183.016.8WATER BASED08.06.199029781.7183.016.8WATER BASED12.06.199029781.7183.016.3OIL BASED12.06.199029781.7092.017.3WATER BASED05.06.199029781.7092.017.3WATER BASED05.06.199029781.7183.016.8WATER BASED05.06.199029911.7086.016.3WATER BASED13.06.199030361.7065.013.4WATER BASED13.06.199030981.7066.014.9WATER BASED14.06.199033121.7058.013.4WATER BASED15.06.199034381.6973.011.5WATER BASED18.06.199036031.6864.013.0WATER BASED18.06.199037411.6852.012.5WATER BASED18.06.199037781.6854.013.0WATER BASED19.06.199037781.6854.011.5WATER BASED20.06.199038091.6856.014.4OIL BASED22.06.199038161.7043.015.0WATER BASED26.06.199038251.7051.012.5WATER BASED26.06.199038261.7216.3WATER BASED26.06.199038321.7059.014.4WATER BASED26.06.199038461.7052.07.7WATER BASED28.06.199038461.7084.011.0WATER BASED26.06.199038871.71WATER BASED04.07.199038911.9795.012.0WATER BASED08.10.199038951.9891.011.3WATER BASED08.10.199039221.7170.010.6WATER BASED04.07.199039221.7083.011.5WATER BASED04.07.199039811.9891.010.6WATER BASED08.10.199040341.7183.011.0WATER BASED04.07.199040351.7188.010.1WATER BASED04.07.199040781.7281.011.5WATER BASED04.07.199041361.7289.012.0WATER BASED04.07.199042001.7280.07.2WATER BASED09.07.199042001.7280.09.6WATER BASED09.07.199042001.7290.015.0WATER BASED09.07.199042001.75108.015.4WATER BASED12.07.199042001.75108.015.4WATER BASED12.07.199042001.75108.015.4WATER BASED12.07.199042001.7837.05.8WATER BASED16.07.199042001.7270.010.0WATER BASED09.07.199042021.7740.06.7OIL BASED16.07.199042031.7643.06.7WATER BASED16.07.199042031.7692.022.0OIL BASED16.07.199042031.7782.08.6OIL BASED16.07.199042032.1193.013.4OIL BASED18.07.199042032.1165.07.2OIL BASED18.07.199042431.7657.06.2OIL BASED20.07.199042721.8555.06.7OIL BASED20.07.199042901.9360.05.3WATER BASED24.07.199042931.9758.06.7WATER BASED24.07.199042931.9880.07.7OIL BASED24.07.199042931.9896.011.5WATER BASED27.07.199042931.9897.010.1WATER BASED27.07.199042931.9785.08.6OIL BASED31.07.199042931.9794.09.1WATER BASED31.07.199042931.9896.011.5WATER BASED24.07.199042931.9794.09.1OIL BASED31.07.199042951.9683.09.6WATER BASED31.07.199042951.9683.08.2OIL BASED03.08.199042961.9582.09.6OIL BASED03.08.199042961.9699.113.4OIL BASED03.08.199042961.9678.010.1WATER BASED10.08.199042961.9682.010.1WATER BASED10.08.199042961.9587.011.0WATER BASED10.08.199042961.9679.08.2OIL BASED03.08.199042981.9680.010.1WATER BASED10.08.199042991.9671.07.2WATER BASED10.08.199042991.9779.08.6WATER BASED10.08.199042991.9781.08.6WATER BASED10.08.199042991.9783.09.1WATER BASED13.08.199043091.9779.07.7WATER BASED13.08.199043211.9774.07.2WATER BASED13.08.199043341.9872.07.2WATER BASED15.08.199043471.9769.06.7WATER BASED15.08.199043591.9770.05.3WATER BASED17.08.199043811.9882.05.8WATER BASED17.08.199044211.9777.05.8WATER BASED20.08.199044241.977.75.8WATER BASED20.08.199044521.9780.05.3WATER BASED20.08.199044611.9896.07.7WATER BASED22.08.199044751.9883.07.2WATER BASED22.08.199044891.9784.07.7WATER BASED23.08.199045231.9884.07.7WATER BASED27.08.199045451.9893.07.2WATER BASED27.08.199045521.9790.07.2WATER BASED27.08.199045661.9690.07.7WATER BASED14.09.199045661.9688.07.7WATER BASED20.09.199045661.9789.08.2WATER BASED01.10.199045661.9796.010.6WATER BASED01.10.199045661.9689.08.6WATER BASED04.10.199045661.9690.08.2WATER BASED05.10.199045661.9695.07.7WATER BASED17.09.199045661.9680.07.2WATER BASED17.09.199045661.9680.07.4WATER BASED17.09.199045661.9688.07.7WATER BASED18.09.199045661.9686.08.2WATER BASED20.09.199045661.9688.07.7WATER BASED21.09.199045661.9686.07.7WATER BASED01.10.199045661.9789.08.2WATER BASED01.10.199045661.9791.08.2WATER BASED01.10.199045661.9791.08.2WATER BASED01.10.199045661.9789.07.7WATER BASED01.10.199045661.9790.010.8WATER BASED01.10.199045661.9793.09.1WATER BASED01.10.199045661.9794.09.1WATER BASED01.10.199045661.9693.08.6WATER BASED02.10.199045661.9687.08.2WATER BASED03.10.199045781.9783.06.7WATER BASED28.08.199046111.9787.07.7WATER BASED29.08.199046361.9890.07.2WATER BASED30.08.199046501.9685.07.0WATER BASED31.08.199046501.9690.07.2WATER BASED04.09.199047311.9695.08.6WATER BASED04.09.199047501.9691.08.1WATER BASED05.09.199047501.9693.07.2WATER BASED10.09.199047501.9682.07.2WATER BASED10.09.199047501.9685.07.7WATER BASED10.09.199047501.9685.08.2WATER BASED10.09.199047501.9683.08.2WATER BASED10.09.1990 -
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]pdf0.22