17/6-1
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Generell informasjon
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Brønnhistorie
GeneralWell 17/6-1 was drilled on the Svaneøgle prospect located in the Ling Depression in the North Sea. The primary objective was to test the hydrocarbon potential of the Middle Jurassic Sandnes and Bryne Formations. Secondary objectives were to prove sand development and hydrocarbons in the Upper Jurassic Sauda Formation, and to prove reservoir presence and hydrocarbons in the Early Jurassic/Late Triassic Gassum/Skagerrak formations. A tertiary objective was to acquire quality data across the Balder Formation.Operations and resultsWildcat well 17/6-1 was spudded with the semi-submersible installation West Alpha on 5 January 2011 and drilled to TD at 3065 m in the Late Triassic Skagerrak Formation. No significant problem was encountered in the operations. The well was drilled with seawater and hi-vis sweeps down to 712 m and with Glydril mud from 712 m to TD.Top of the main target, Sandnes and Bryne formations was penetrated at 2630 m. The formations had a total gross reservoir thickness of 96 m containing sandstones interbedded with claystones and thin coal beds. Reservoir properties were poorer than expected in the Sandnes Formation, and only minor amounts of hydrocarbons were encountered in the uppermost part. The Bryne Formation had a better reservoir sand development, but was found to be water bearing. The secondary target Sauda Formation had no sand/reservoir development. The Gassum/Skagerrak Formation showed minor amounts of sandstones, but contained no hydrocarbons. The Balder Formation showed no reservoir development and had no indications of hydrocarbon shows. Two cuttings samples from the Sandnes Formation showed weak cut fluorescence (no core samples were taken); otherwise no oil shows were recorded in the well.No cores were cut in the well. MDT fluid samples were taken at 2631.1 m, 2635.4 m, and at 2665 m. The two shallower sample points, at 2635.4 m and 2631.1 m both gave some indications of oil (perhaps 5%) on the LFA; however the mobility was so low that large draw-downs of 150 - 200 bar were necessary. Post well analysis showed that the two upper samples contained only 1 and 3 cm3 of oil, respectively. The deepest sample was a water sample.The well was permanently abandoned on 7 February 2011 as a dry well with oil shows.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]716.003065.00 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet290340716716745789865878121920202020211624892542263026302647272628002988 -
Geokjemisk informasjon
Geokjemisk informasjon Dokument navnDokument formatDokumentstørrelse [MB]txt0.00txt0.29 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]GR XPT HNGS HTNS TLD HRLA DSI19523065LWD - DI290368LWD - DI368712LWD - GR RES APWD DIR SON368713LWD - GR RES APWD DIR SON ADN7161957LWD - GVR ECO DIR SON19573065MDT GR26312665VSI GR2903055 -
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 formasjonstestCONDUCTOR30368.036368.00.00LOTSURF.COND.20706.726713.01.45LOTPILOT HOLE713.09 7/8713.00.00LOTINTERM.9 5/81952.012 1/41957.01.57LOTOPEN HOLE3065.08 1/23065.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3501.04Spud mud7121.02SW10501.1319.0Glydril WBM19571.2415.0Glydril WBM22201.2516.0Glydril WBM25821.2516.0Glydril WBM27901.2417.0Glydril WBM28901.2417.0Glydril WBM30651.2517.0Glydril WBM