16/1-22 S
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Generell informasjon
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Brønnhistorie
GeneralWell 16/1-22 S was drilled to appraise the Ivar Aasen Field on the Gudrun Terrace in the North Sea. The primary objective was to test the hydrocarbon potential in the Sleipner and Skagerrak Formations in the southwestern part of the Ivar Aasen Field and to establish hydrocarbon fluid contacts.Operations and resultsAppraisal well 16/1-22 S was spudded with the jack-up installation Mærsk Interceptor on 24 April 2015 and drilled to TD at 2640 m in the Late Triassic Skagerrak Formation. No significant problem was encountered in the operations. The well was drilled with seawater and bentonite sweeps down to 600 m, with Versatec oil based mud from 600 m to TD. Good hydrocarbon shows were recorded in the sandy sections in the cores from 2503 to 2550 m.The Jurassic - Triassic sequence was different from the expected as the Jurassic consisted of the Viking Group only, with no Jurassic reservoir present. This was however partly compensated by a thicker Triassic reservoir sequence with good quality sandstone in the uppermost part. Top Skagerrak Formation was encountered at 2506 m, which was 28 m deeper than the prognosis. The total reservoir thickness was 9 m thinner than expected. The Skagerrak Formation had moveable oil in the top three meters down to an ODT at 2508.3 m (2486 m TVD).Two cores were cut in this well. Core 1 was cut from 2502.8 to 2517.66 m with 93.14% recovery, and core 2 was cut from 2517.66 to 2550 m with 100% recovery. A small depth shift relative to the logs (-0.1 to -0.4 m) is estimated for core 1. For Core 2 there was no core-log depth shift. MDT fluid samples were taken at 2506.15 (oil) and 2524.03 m (water) fluid.The well was plugged back for sidetracking on 27 May 2015. 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]610.002639.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12502.82516.6[m ]22517.72550.6[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]46.7Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
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 formasjonstestCONDUCTOR30220.530220.50.00SURF.COND.20354.026359.00.00INTERM.16598.017 1/2600.01.37FITPILOT HOLE601.09 7/8601.00.00INTERM.9 5/81448.512 1/41460.01.81FITOPEN HOLE2640.08 1/22640.00.00 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]ADT MRX GR24102530EC DEN NEU SP GR14402640LWD - GR RES DEN NEU DI PWD25022640LWD - GR RES DEN NEU SON DI PWD14602502LWD - GR RES SON DI6001460MDT HC24142540RES DEN NEU LITH GR6001457RES SON GR14402640SON SC PP GR6001456XPT ADT MRX21952640ZOVSP4022578 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1667748429501208162720842084212421942239228923222380238024122412248725062506 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling6011.09SPUD MUD14501.1927.0Versatec OBM18571.2322.0Versatec OBM20971.2425.0Versatec OBM24111.2424.0Versatec OBM25021.2421.0Versatec OBM25171.2428.0Versatec OBM25511.2422.0Versatec OBM26401.2428.0Versatec OBM26401.2425.0Versatec OBM