16/3-4
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Generell informasjon
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Brønnhistorie
GeneralWell 16/3-4 was drilled to prove the extension of the Avaldsnes Discovery to the north-east of the structural crest of the Avaldsnes structure. In this area, a continuation of the Upper Jurassic, Intra-Draupne Formation sandstone found in the discovery well 16/2-6 was expected to rest on granitic basement.Operations and resultsWildcat well 16/3-4 was spudded with the semi-submersible installation Bredford Dolphin on 16 May 2011 and drilled to TD at 2020 m in granitic basement. A 9 7/8" pilot hole was drilled down to planned setting depth for 20" casing at 760. No shallow gas or boulders were seen. No significant problem was encountered during drilling of the pilot or the main well. The well was drilled with seawater and hi-vis sweeps down to 760 m and with Performadril mud from 760 m to TD.BCU, top Draupne Formation was encountered at 1914 m, and a 13.8 m thick Intra-Draupne Formation sandstone, Tithonian age, was penetrated at 1926 m. The Intra-Draupne sandstone was oil-filled down to weathered basement at 1940 m. No oil-water contact was established, however, pressure communication between 16/3-4 and the 16/2-6 T2 Avaldsnes discovery well was proved. There were no shows above or below the Intra Draupne Formation sandstone reservoir.Three cores were cut from 1913 to 1961 m, covering the Draupne Formation and 21 m of the underlying Basement. Good recovery was obtained in the first and last core (100 and 94% recovery respectively), while the recovery in core number 2 was 43%. Extensive wire line logging was performed including pressures (XPT/MDT) and fluid sampling. MDT fluid samples were taken at 1929.0 m (oil), 1939.6 m (oil), and 1943 m (water).After completing the data acquisition program and testing, the well was plugged back to the 20" casing shoe and sidetracked as well 16/3-4 A. The 16/3-4 well bore was permanently abandoned on 28 June as an oil appraisal well.TestingThe Draupne Formation sandstone was production tested (DST) from the interval 1923.5 to 1936.8 m. The test produced in the main flow 18200 Sm3 gas and 885 Sm3 oil /day through a 52/64" choke. The GOR was 20 Sm3/Sm3 at separator conditions of 46 deg C and 13.6 bar. The oil density and gas gravity at ambient conditions on-rig were 0.889 g/cm3 and 0.806 (air = 1), respectively. The maximum temperature measured at 1894.8 m was 83.5 m. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]770.002020.05 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet11913.01940.2[m ]21940.21946.6[m ]31955.11960.7[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]39.1Borekjerner 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 tilgjengeligDST1939.601928.98OIL20.06.2011 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1428008779349401007132813541354138513961465148514851504157716941706174117831783186118861914191419261940 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]txt0.00txt0.00txt0.00txt0.07txt0.02txt0.19 -
Borestrengtester (DST)
Borestrengtester (DST) Test nummerFra dybde MD
[m]Til dybde MD
[m]Reduksjonsventil størrelse
[mm]1.01923193620.6Borestrengtester (DST) Test nummerEndelig avstengningstrykk
[MPa]Endelig strømningstrykk
[MPa]Bunnhullstrykk
[MPa]Borehullstemperatur
[°C]1.083Borestrengtester (DST) Test nummerOlje produksjon
[Sm3/dag]Gass produksjon
[Sm3/dag]Oljetetthet
[g/cm3]Gasstyngde rel. luftGOR
[m3/m3]1.0885182000.88320 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CMR XPT GR18032015FMI MSIP GR14292016MDT GR19291943MSCT GR18091950MSCT GR19402011MWD - DIR GR RES PWD136757MWD - DIR GR RES PWD SON DEN NEU7372016PEX HRLA HNGS17952011USIT CBL16821946VSI GR1162010 -
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 formasjonstestCONDUCTOR30207.036211.00.00LOTSURF.COND.20752.026760.01.95LOTPILOT HOLE760.09 7/8760.00.00LOTINTERM.9 5/81795.012 1/41803.01.73LOTOPEN HOLE2020.08 1/22020.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling4501.05Spud Mud7631.3025.0Permormadrill17051.3031.0Permormadrill19191.2133.0Permormadrill19611.2029.0Permormadrill20201.20NaCl Brine20201.2131.0Permormadril20201.2031.0Permormadrill -
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