34/10-9
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Generell informasjon
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Brønnhistorie
GeneralWell 34/10-9 was drilled on the central part of the Gullfaks Field. The primary objective was to test sandstones of the Early Jurassic Cook Formation. Originally the well was planned to be drilled to a total depth of 2000 m. Results from the well required further drilling into sandstones of the Statfjord Formation.Operations and resultsAppraisal well 34/10-9 was spudded with the semi-submersible installation Ross Rig on 24 March 1980 and drilled to TD at 2200 m in the Early Jurassic Burton Formation. As in other wells drilled in the area the pore pressure was close to the formation integrity in the pressure transition zone. Lost circulation combined with high gas readings, was experienced on several occasions in this zone between ca 1730 and 1760 m. Apart from that, the drilling was carried out without any specific problems. The well was drilled with seawater and high viscosity slugs down to 845 m, and with a gel/lignosulphonate mud system from 845 m to TD. From the well site sample description diesel was added to the mud in the interval 1260 to 1350 m.The Brent Group, Ness formation was encountered at 1833 m, directly underlying the Late Cretaceous Kyrre Formation. The Brent Group was hydrocarbon bearing down to base Rannoch Formation at 1945 m with ca 97 m net hydrocarbon bearing sands. The Cook Formation was hydrocarbon bearing with an oil/water contact at 2118 m. First trace of oil shows, fluorescence, was seen at 1220 m. Weak shows on claystone and limestone were recorded from this depth to 1500 m. Stronger oil shows with "oil streaks over shaker" and oil-smell were recorded from 1690 m to 1720 m in the Lista Formation.Four cores were cut in the well. Core 1 was cut from 1850 to 1868 m in the Etive Formation, while cores 2 to 4 were cut from 2089 m to 2130 m in the Cook Formation. The Formation interval tester (FIT) was run in the well for fluid sampling. One sample was recovered from the Brent formation at 1840 m. The sample contained hydrocarbons. The other sample was taken in the Cook Formation at 2132 m. This sample contained water.The well was suspended on 9 May 1980 for further drilling and testing in a later re-entry. It is classified as an oil appraisal 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]290.002410.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11850.01863.5[m ]22089.02093.2[m ]32094.02109.5[m ]42112.02129.4[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]50.6Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDST2078.002084.00YESDSTDST 2A2084.002090.0021.06.1980 - 13:00YESDSTDST 31906.001910.0024.06.1980 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet2279219459901163136215101510157516961696176718331833183618671945195719572083 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.14pdf0.17 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf1.54pdf27.30pdf33.81pdf0.30pdf1.84pdf1.39pdf1.32pdf0.29pdf1.05pdf2.60pdf3.14 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.0207820849.52.0205920659.53.01879188512.7Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.032.00015.0002.033.00032.0003.031.00030.000Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.03527150.854772.0751484280.847653.0727424800.86662 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL GR7122206CDL VDL GR18001896CDL VDL GR20502124CYBERDIP17182428DLL MSFL GR18002202FDC CNL GR CAL17182428FDC GR CAL8311725GEODIP23502428HDT17182428ISF SON GR2182427 -
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 formasjonstestCONDUCTOR30288.036289.50.00LOTSURF.COND.20830.026845.01.59LOTINTERM.13 3/81441.017 1/21455.01.76LOTINTERM.9 5/81715.012 1/41722.01.90LOTINTERM.9 5/81718.012 1/41722.01.90LOTLINER72199.08 1/22200.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3501.04waterbased6501.10waterbased8251.09waterbased10501.20waterbased12751.30waterbased14901.55waterbased16301.67waterbased17551.82waterbased18201.80waterbased -
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]pdf0.17