6406/6-2
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Generell informasjon
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Brønnhistorie
GeneralWell 6406/6-2 was drilled on the Onyx West prospect in the Halten Terrace, Norwegian Sea. Onyx West is an Early - Middle Jurassic fault block prospect. The primary objective of well 6406/6-2 was to determine the presence of commercial volumes of hydrocarbons in the Early to Middle Jurassic reservoirs of the Tilje, Tofte, Ile, and GarnFormations, and potentially the Åre Formation. There were no secondary objective levels in the Cretaceous or Tertiary. The location of the 6406/6-2 well was chosen to penetrate all reservoir intervals within closure without leaving economic volumes up dip.Operations and resultsWell 6406/6-2 was spudded with the semi-submersible installation West Alpha on 23 September 2006 and drilled to TD at 4670 m in the Lower Tilje Formation. The well was planned for 109 days, and the actual days were 135 days. Major Non Productive Time evens were due to weather (25%), and two shoe repair events and pack off events in the 17.5" hole section. The well was drilled with seawater down to 383, with Spud mud / KCL brine-SW pills / Glydril from 383 m to 1430 m, with Ultradrill water based mud from 1430 m to 2340 m, and with Paratherm oil based mud from 2340 m to TD. The site survey indicated no shallow gas at the well location. As predicted, no shallow gas was encountered in this well.The lithology encountered came in as prognosed except for the Garn Formation, which was found to be shaled out. The Ile, Tofte and Tilje Formations were all found to be entirely water bearing. Shows were observed on sandstones and siltstones of the Ile Formation. There were indications of residual gas in low porosity sands in the Upper Ile and Upper Tilje Formations.MDT pressure points were acquired. Clear water gradients were established in the Lower Ile and Tofte formations. MDT water samples were collected in the Lower Ile formation and confirmed Onyx West as dry. No cores were taken.The well was permanently abandoned on 31 January 2007 as a dry 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]1450.004668.00 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet271271128717001700222522252317240024002503271228612861367939004032405140514068416441644233428243904390441744504561 -
Spleisede logger
Spleisede logger Dokument navnDokument formatDokumentstørrelse [MB]pdf0.65 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL21752330CBL29513846GPIT PPC DSI EMS AIT LDT APS GR39404655IPLT PPC AIT DSI GPIT23303922MDT APS GR41714614USIT CBL17752280VSI16813659 -
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 formasjonstestCONDUCTOR30380.036385.00.00LOTSURF.COND.201410.0261422.01.71LOTINTERM.13 3/82330.017 1/22340.01.90LOTINTERM.9 7/83944.012 1/43950.02.10LOTOPEN HOLE4670.08 1/24670.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3831.20SPUD MUD14351.5027.0ULTRADRIL19221.6336.0ULTRADRIL23491.7146.0ULTRADRIL23541.8135.0PARATHERM39201.8543.0PARATHERM39341.8439.0PARATHERM39501.8439.0PARATHERM39511.8439.0PARATHERM