16/4-13 S
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Generell informasjon
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Brønnhistorie
GeneralWell 16/4-13 S was drilled to test the D-segment prospect in a sub-basin northwest of the Solveig Field and south of the Edvard Grieg Field in the North Sea. The primary objective was to prove petroleum in reservoir rocks of Triassic to Paleozoic Age.Operations and resultsWildcat well 16/4-13 S was spudded with the semi-submersible installation West Bollsta on 12 February 2021. The well was drilled to 1985 m where pack-off occurred and losses were experienced. The losses could not be cured. The decision was made to plug back and make a side-track. Technical side-track 16/4-13 ST2 was kicked off at 1365 m and drilled to TD at 2422 m (2324.3 m TVD) in Paleozoic basement conglomerates. The well was drilled with seawater and hi-vis pills down to 426 m, with Hydraglyde Optima water-based mud from 426 m to 1365 m, with Glydril Plus water-based mud form 1365 m to 2010 m and with Hydraglyde Optima water-based mud from 2010 m to TD.Paleozoic basement sandstone and conglomerates were encountered with top at 2020 m (1973.4 m TVD), directly underlying Late Cretaceous Tor Formation chalk. No Jurassic or Triassic sediments were present. The Basement was oil bearing down to an oil-water contact at ca 2031 m (1983 m TVD). About seven metres of the reservoir had poor to moderate reservoir quality. Shows on cuttings (no stain, no odour, direct and cut fluorescence) continued down to 2098 m and weaker shows (weak direct fluorescence only) down to 2175 m). No shows were described above top reservoir.Three cores were cut in succession from 2022.8 to 2048.3 m in the basement conglomerates. ORA fluid samples were taken at 2022.2 m (oil), 2027.04 m (oil), and 2034.5 m (water).The well was permanently abandoned on 10 April 2021 as an oil 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]430.001980.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12022.82023.2[m ]22025.22029.4[m ]32029.62048.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]23.1Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligMDT2027.000.00OILYESMDT2022.200.00OILYES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1361367389159509509791212159817021759189118911911195319932004200420142020 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]FMI MSIP1352422IBC CBL4201982MWD - GR PWD RES DIR SON00MWD - GR PWD RES GR DIR13421983MWD - GR PWD RES SON CAL DEN NEU13421982MWD - GR RES PWD DEN CAL RES19872020MWD - NEU DIR SON19872419MWD - PWD GR DIR135185MWD - PWD RES GR DIR203406MWD - PWD RES GR DIR SON202744ORA20222250PEX HRLA HNGS18902422XPT NEXT CMR20212400 -
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 formasjonstestCONDUCTOR30202.036202.00.00INTERM.20418.026426.01.53FITINTERM.13 3/81343.017 1/21348.01.98LOTOPEN HOLE1985.012 1/41985.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2011.3919.033.0Glydril2201.4730.019.0Hydraglyde Optima2231.3916.513.5HydraglydeOptima2291.0537.01.0SWEEPS3701.3916.012.5HydraglydeOptima4261.3913.09.5Hydraglyde Optima4261.5020.028.0Glydril6551.5021.027.0Glydril7361.3917.013.5Hydraglyde Optima7501.0538.01.0SWEEPS7501.5021.027.0Glydril7501.0538.01.0SWEEPS13481.3918.014.0Hydraglyde Optima13831.4519.012.5Glydril Plus18221.2016.010.5Hydraglyde Optima19501.4727.020.5Hydraglyde Optima19851.4521.014.5Glydril20221.2018.011.0Hydraglyde Optima24221.2017.012.5Hydraglyde Optima