2/8-17 A
Eksport: PDF
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Generell informasjon
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Brønnhistorie
GeneralExploration well 2/8-17 A is a sidetrack from well 2/8-17 S which drilled a salt induced anticline on the western edge of the Piggvar Terrace 20 km Northeast of the Valhall Field. The decision to drill the sidetrack well was made when well 2/8-17 S was abandoned due to hole problems that prohibited a full evaluation of the structure. The primary objectives of well 2/8-17 A were the Late Cretaceous Ekofisk and Tor chalk Formations, same as in well 2/8-17 S, but it was decided that the sidetrack should evaluate a more down flank element of the Trud prospect than in well 2/8-17 S. Well 2/8-17 A was planned to TD in Permian evaporites immediately underlying the chalk.OperationsExploration well 2/8-17 A was kicked off from 1690 m in well bore 2/8-17 S with the jack-up installation "Transocean Nordic" on 18 January 1998 and drilled to 2838 m where mud losses and circulation problems resulted in lost hole. A technical sidetrack, 2/8-17 A T2, was kicked off from 1952 m in well 2/8-17-A and successfully drilled to target TD at 3145 m (2853 m TVD RKB) in Permian evaporites. The well was drilled with "ANCOVERT" oil based mud from kick-off to TD.The 2/8-17 A T2 well penetrated the Upper Cretaceous Ekofisk and Tor Formations, and a thin Lower Cretaceous interval before reaching TD in the Permian. There were no oil shows and no cores were taken. The Cretaceous interval was evaluated by a comprehensive wire-line logging program, which confirmed the absence of hydrocarbons in comparatively low porosity chalk. No fluid samples were taken. Well 2/8-17 A T2 was permanently abandoned as a dry hole on 21 February 1998.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]1700.002835.00 -
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 formasjonstestCONDUCTOR30299.036300.00.00LOTSURF.COND.13 3/8959.017 1/2960.00.00LOTINTERM.9 5/81690.012 1/41690.00.00LOTOPEN HOLE2838.062838.00.00LOTLINER73145.08 1/23145.00.00LOT -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]DCBIL HEXDIP29453140HDIL MAC GR29453145MWD RNT - GR RES DIR19523145RCI GR29563047RCOR29613115VSP9503145ZDEN CN SGR29453145 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet11016272908290829182935294329433019311131113119 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.29 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf2.85pdf149.17 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling14601.6841.0ANCO VERT17151.7230.0ANCO VERT18571.7230.0ANCO VERT18571.7230.0ANCO VERT21861.8140.0ANCO VERT25291.8142.0ANCO VERT27561.8140.0ANCO VERT27721.7236.0ANCO VERT28381.7641.0ANCO VERT28451.6841.0ANCO VERT29351.8143.0ANCO VERT29461.8140.0ANCO VERT29771.6735.0ANCO VERT31451.6740.0ANCO VERT