6506/9-2 S
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Generell informasjon
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Brønnhistorie
GeneralThe well 6506/9-2 S was drilled on the Fogelberg prospect in a rotated fault block located on the Halten terrace north-northwest of the Smørbukk and Åsgard fields. The overall objective for the well was to test the hydrocarbon potential in the Middle/Lower Jurassic sandstones of the Fangst and Båt Groups. The expected hydrocarbon phase was light oil with associated gas similar to the nearby 6506/11-7 Morvin light oil discovery. The planned total depth for the well was 4783 m TVD RKB, fulfilling the license obligation of drilling 50 m into the Åre Formation (Båt Group). The well was defined as a HPHT well.Operations and resultsWildcat well 6506/9-2 S was spudded with the semi-submersible installation West Alpha on 11 February 2010 and drilled to TD at 4805 m (4736 m TVD) in the Early Jurassic Åre Formation. The well started with a 9 7/8" pilot hole down to 1227 m to check for shallow gas. No shallow gas was encountered. The well was drilled vertical down to 1213 m. From there angle was built up to 13 deg at ca 1600 m and kept at approximately this angle down to ca 3900 m, and then falling off to vertical again from ca 4000 m to TD. The well was drilled without significant operational problems. It was drilled with seawater and sweeps down to 1219 m, with Glydril water based mud from 1219 m to 2126 m, and with Versatherm oil based mud from 2126 m to TD.No hydrocarbons were encountered in the Lysing or Lange formations. High gas readings were encountered in the Lange Formation at 4022 m (3954 m TVD). This coincided with maximum recorded pore pressure in the well and low mud weight. With the correct mud weight circulated in place, the background gas returned to normal level and the drilling operation resumed. Base Cretaceous Unconformity was encountered at 4138 m (4069 m TVD) with 20 m MD Spekk Formation overlying 174 m MD Melke Formation. The target reservoir was penetrated at 4332 m (4263.5 m TVD) with 107.5 m TVD gross gas/condensate in Garn and Ile collectively and a possible GWC at 4440 m (4372 m TVD). Garn and Ile consisted of slightly tighter reservoir sands than initially anticipated. The results of the MDT pressure measurements showed a gas/condensate gradient, equal to 0.029 bar/m, in the Garn and Ile formations. The Tofte Formation was very tight and no gradient could be established. In the Tilje Formation a water gradient is established at 0.096 bar/m. No clear oil shows above OBM were recorded in the well.Two conventional cores were cut at 4342 - 4369 m in the Garn Formation and 4416 - 4471 m in the Ile Formation, both with approximately 100% recovery. MDT fluid samples were taken at 4357.98 m in upper Garn Formation (gas/condensate), 4377 m in lower Garn Formation (gas/condensate), 4411.1 m in upper Ile Formation (gas/condensate), 4428 m in lower Ile Formation (gas/condensate), and 4676 m in the Tilje Formation (water).The well was permanently abandoned on 28 April 2010 as a gas/condensate discovery.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]1225.004805.50 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet14342.04368.7[m ]24416.04471.0[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]81.7Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie4212.0[m]DCAPT4221.0[m]DCAPT4230.0[m]DCAPT4239.0[m]DCAPT4248.0[m]DCAPT4266.0[m]DCAPT4275.0[m]DCAPT4284.0[m]DCAPT4293.0[m]DCAPT4302.0[m]DCAPT4311.0[m]DCAPT4320.0[m]DCAPT4329.0[m]DCAPT4338.0[m]DCAPT4371.0[m]DCAPT4380.0[m]DCAPT4389.0[m]DCAPT4398.0[m]DCAPT4407.0[m]DCAPT4416.0[m]DCAPT4473.0[m]DCAPT4482.0[m]DCAPT4491.0[m]DCAPT4500.0[m]DCAPT4509.0[m]DCAPT4518.0[m]DCAPT4527.0[m]DCAPT4536.0[m]DCAPT4545.0[m]DCAPT4554.0[m]DCAPT4563.0[m]DCAPT4581.0[m]DCAPT4590.0[m]DCAPT4599.0[m]DCAPT4608.0[m]DCAPT4617.0[m]DCAPT4626.0[m]DCAPT4635.0[m]DCAPT4644.0[m]DCAPT4653.0[m]DCAPT4662.0[m]DCAPT4671.0[m]DCAPT4680.0[m]DCAPT4689.0[m]DCAPT4698.0[m]DCAPT4707.0[m]DCAPT4716.0[m]DCAPT4725.0[m]DCAPT4734.0[m]DCAPT4743.0[m]DCAPT4752.0[m]DCAPT4761.0[m]DCAPT4770.0[m]DCAPT4779.0[m]DCAPT4788.0[m]DCAPT4797.0[m]DCAPT4805.0[m]DCAPT -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet299299145518851885204020402143217021702404261031763176321241204138413841584332433243924397447144714505457245784699 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]txt0.00txt0.06 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]AIT GPI PPC DSI GR41964997LDS APS HNGS41964799LWD - DJ2991219LWD - GEOVIS ECOS SONVIS43694805LWD - GR RES PWD DJ SON DENS NEU21264202LWD - GR RES PWD DJ SONIC2991227LWD - GR RES PWD DJ SONIC12272126LWD - GV STETH ECHO SONVIS42024342MDT43334594MDT43344463MDT43754377MDT46764358MSCT43454386VSI13452445VSI21964795XPT43334338 -
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 formasjonstestCONDUCTOR30390.036396.00.00LOTSURF.COND.201213.0261219.01.71LOTINTERM.13 3/82111.017 1/22126.01.90LOTINTERM.9 5/84197.012 1/44202.02.10LOTOPEN HOLE4806.08 1/24805.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling10331.02Seawater12101.3116.0Glydril WBM17951.4022.0Glydril WBM19551.3920.0Glydril WBM21251.5425.0Glydril26801.7269.0Versatec41561.7766.0Versatherm42021.8079.0Versatherm42131.8938.0Versatherm44701.8946.0Versatherm48051.8962.0Versatherm48051.8961.0Versatherm -
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]pdf0.29