6407/5-2 S
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Generell informasjon
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Brønnhistorie
GeneralWell 6407/5-2 S was drilled on the eastern side of the Gimsan Basin on the Halten Terrace in the Norwegian Sea. Nearest discoveries are the Mikkel Sør gas wells, 2-3 km to the east. The main objective of the well was to drill and evaluate the Late Cretaceous Lysing Formation in the Chamonix Prospect. The deeper Jurassic reservoirs of the Garn, Ile, Tofte and Tilje Formations were seen as secondary targets.Operations and resultsDue to presence of cold water corals and sponges in the region, identified during the site survey, the spud location for Chamonix was moved 500m SE from its original planned position. This prevented any negative effects on the cold-water corals and sponges during anchor laying and drilling operations. In order to penetrate all targets vertically, the well was drilled with an S-shaped trajectory.Wildcat well 6407/5-2 S was spudded with the semi-submersible installation Borgland Dolphin on 28 July 2011 and drilled to TD at 3545 m in the Early Jurassic Tilje Formation. Due to potential shallow gas a 9 7/8" pilot hole was drilled from 332 m to 545 m. No shallow gas was observed. No significant problem was encountered in the operations. The well was drilled with spud mud down to 545 m and with Carbo-Sea synthetic oil-based mud from 545 m to TD.No movable hydrocarbons were discovered in the prognosed Late Cretaceous Lysing Formation. Post-well biostratigraphic evaluation of the well assigned these sand intervals to the Lange Sandstone Member. A non commercial gas discovery was made in Jurassic sandstones where a ca 40 m gross gas column was penetrated from top Rogn Formation at 3109.5 m (2986.4 m TVD), through a thin Melke Formation sandstone and into the Garn Formation. No gas/water contact was established. The only shows that could be distinguished from the oil based mud were seen in the Rogn Formation.One core was cut from 2844 to 2871 m in the Lange Formation. RCI wire line fluid samples were taken at 3114.9 m (gas/condensate), 3135.2 m (gas/condensate), 3141.3 m (gas/condensate), and at 3155.3 m (water).The well was permanently abandoned on 4 September 2011 as a minor gas 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]550.003554.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12844.02871.8[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]27.8Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie3050.0[m]DCPETROSTR3056.0[m]DCPETROS3062.0[m]DCPETROS3068.0[m]DCPETROS3074.0[m]DCPETROS3080.0[m]DCPETROS3086.0[m]DCPETROS3092.0[m]DCPETROS3098.0[m]DCPETROS3104.0[m]DCPETROS3107.0[m]DCPETROS3110.0[m]DCPETROS3113.0[m]DCPETROS3116.0[m]DCPETROS3125.0[m]DCPETROS3128.0[m]DCPETROS -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet2612611152133613361995199520822217221723102400277027703054305431093116314131413250328033403340336734363498 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]EARTH IMAGER27603510LWD - GR RES DIR PWD261330LWD - GR RES DIR SON DEN PWD11922780LWD - GR RES DIR SON DEN PWD NEU27803345LWD - GR RES DIR SON PWD4951192LWD- DIR GR255479MREX GR28203520RCI GR31133500VSP10653465 -
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 formasjonstestCONDUCTOR30326.036326.00.00LOTSURF.COND.20509.026545.01.37LOTPILOT HOLE545.09 7/8545.00.00LOTINTERM.13 3/81186.017 1/21192.01.80LOTINTERM.9 5/82760.012 1/42780.01.90LOTOPEN HOLE3545.08 1/23545.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2611.05Spud mud5451.05Spud mud5581.2120.0Carbo-sea OBM25801.5738.0Carbo-sea OBM27801.5733.0Carbo-sea OBM31391.3922.0Carbo-sea OBM35451.5732.0Carbo-sea OBM35451.3924.0Carbo-sea OBM -
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]pdf0.29