6407/3-2 S
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Generell informasjon
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Brønnhistorie
GeneralWell 6407/3-2 S was drilled to test the Lanterna prospect, located on the Trøndelag Platform, west of the Mikkel Discovery in the Norwegian Sea. The primary objective was to test migration of hydrocarbons into the prospect, and to prove hydrocarbons in the Garn, Tilje and upper Åre formations. Secondary objective was to test the hydrocarbon potential in the Lower Åre Formation and the Triassic Grey Beds.Operations and resultsWildcat well 6407/3-2 S was spudded with the semi-submersible installation West Hercules on 6 August 2019 and drilled to TD at 2628 m (2589.4 m TVD) m in the Early Jurassic Åre Formation. An 8 ½” pilot well was drilled after the 42” from 320 to 477 m. The pilot hole observed gas bubbles at approximately 477 m. The flow was stopped with 1.60 sg kill-mud. After evaluating the situation and performing required measures to handle the situation, drilling continued as planned. Otherwise operations proceeded without significant problems. The well was drilled with seawater down to 435 m and with Glydril mud from 435 m to TD.A 41 m TVD thick Spekk Formation was penetrated above top Garn Formation, which was encountered at 2000 m (1983 m TVD). The Garn Formation contains a thick reservoir sandstone interval with an interbedded siltstone body and limestone stringers. The underlying Not Formation is predominantly clay and siltstone, while the Ile Formation consists of alternating sand and siltstone with traces of claystone and limestone. The Tilje Formation was encountered at 2314 m (2286 m TVD) and consisted of interbedded bodies of sandstone, siltstone, and claystone. The Åre Formation was encountered at 2430 m (2398 m TVD) and consists of interbedded bodies of sandstone, siltstone, and claystone with coals in the lower part.All reservoirs were water-bearing. No hydrocarbon indications were seen on the logs and no shows were seen on the cuttings and the gas levels were quite low in general throughout the well.No cores were cut. No fluid sample was taken.Due to dry well and lack of shows TD was set above the Triassic.The well was permanently abandoned on 5 September 2019 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]440.002628.00 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet268268119611961753175317941868186819441944195819582000200020622120217821782190222323142430 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]HRLA PEX XPT SS XPT19112628MWD LWD - ARC TELE320435MWD LWD - PD ARC TELE268320MWD LWD - PD ARC TELE4351305MWD LWD - PDO ARC TELE13051911MWD LWD - PDO GVR ARC TELE GEO19112628XPT19112628 -
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 formasjonstestCONDUCTOR36317.042320.00.00SURF.COND.20431.026435.01.46FITINTERM.13 3/81300.0161305.01.67FITLINER9 5/81891.012 1/41911.01.51FITOPEN HOLE2628.08 1/22628.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3201.3020.0CMC Spud3201.6018.0CMC Spud4341.3025.0CMC Spud4351.118.0Glydril4771.6020.0CMC Spud5101.128.0Glydril7191.138.0Glydril9501.1710.0Glydril10701.1810.0Glydril12571.2111.0Glydril13051.2111.0Glydril13051.4915.0Glydril13231.5019.0Glydril19111.2511.0Glydril19111.5023.0Glydril26281.2816.0Glydril26281.2115.0Glydril