34/10-11
Eksport: PDF
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Generell informasjon
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Brønnhistorie
GeneralWell 34/10-11 was drilled on the Gullfaks Delta structure in the North Sea. The primary objective of the well was to test sandstones of Middle Jurassic age. Secondary objectives were sandstones of Lower Jurassic age.Operations and resultsAppraisal well 34/10-11 was spudded with the semi-submersible installation Ross Rig on 23 October 1980 and drilled to TD at 2155 m in Late Triassic sediments of the Lunde Formation. Bad weather caused 511 hrs lost time (15.7% of total rig time). Significant lost time (509 hrs) was caused also by malfunction and repairs of the BOP. The well was drilled with spud mud down to 463 m, with gel/lignosulphonate/seawater mud from 463 m to 1100 m, with Gypsum/lignosulphonate/sweater mud from 1100 m to 1720 m, and with gel/lignosulphonate/seawater mud from 1720 m to TD.First oil shows were recorded from 1090 m to 1200 m, intermittent weak shows were seen from 1420 to 1495, and more or less continuous oil shows were recorded on limestone from 1660 m to top reservoir at 1868 m. The well proved oil in sandstones from top of the Early Jurassic Amundsen Formation at 1868 down to the OWC at 2038 m in Late Triassic sediments of the Raude Formation. Below 2038 m shows were recorded down to TD.Six cores were cut in the interval 1870 m to 1926.5 m in the Amundsen and Nansen formations. Two FIT fluid samplings were attempted. FIT 1 at 2081 m recovered 3 litres 35 °API oil and 7 litres of mud filtrate in the 2 3/4 gallon chamber. The FIT 2 at 2051 m did not recover any fluids.The well was permanently abandoned on 5 march 1981 as a as an oil appraisal well on the Gullfaks field.TestingTwo drill stem tests were conducted in the Statfjord Group.DST1 tested the interval 2018 to 2028 m in the Raude Formation. It produced 399 Sm3 oil and 60880 Sm3 gas /day through a 24/64” choke. GOR was 153 Sm3/Sm3, oil gravity was 36.5°API, and gas gravity was 0.647 (air = 1). The bottom hole temperature in the test was 79.9°C.DST2 tested the interval 1891 to 1896 m in the Nansen Formation. It produced 389 Sm3 oil and 64560 Sm3 gas /day through a 24/64” choke. GOR was 166 Sm3/Sm3, oil gravity was 36.5°API, and gas gravity was 0.656 (air = 1). The bottom hole temperature in the test was 75.6°C. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]300.002155.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11870.01879.7[m ]21887.01890.7[m ]31891.51893.8[m ]41899.01906.5[m ]51909.01920.0[m ]61920.01925.6[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]39.8Borekjerner 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 tilgjengeligDSTTEST21891.001896.0023.02.1981 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet254958980153015301592169518681868189018901935200020892089 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.10pdf0.17 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf1.32pdf26.84pdf1.70pdf5.21pdf2.89pdf2.43pdf9.10pdf0.30pdf0.40pdf0.10pdf7.35 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.0201820289.52.0189118969.5Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.02.0Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0404611710000.8400.6478472.0397674020000.8300.656 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]BGT GR4591445CBL2552116CBL VDL18432155DLL MSFL GR18302157FDC CNL GR CAL3152158GEODIP18602100HDT DIP17132158ISF SON GR SP3152156LSS GR18142156NGS17132158WAVEFORM18142156 -
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 formasjonstestCONDUCTOR30315.036316.00.00LOTSURF.COND.20459.026463.01.50LOTLINER161100.0221100.01.60LOTINTERM.13 3/81438.017 1/21445.01.77LOTINTERM.9 5/81715.012 1/41720.01.93LOTLINER72155.08 1/22155.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling5251.1148.0waterbased13001.2551.0waterbased14101.3749.0waterbased15251.5555.0waterbased17601.8251.0waterbased19501.8655.0waterbased -
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]pdf0.19