6407/1-9
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Generell informasjon
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Brønnhistorie
GeneralWell 6407/1-9 was drilled to test the Egyptian Vulture prospect in the Grinda Graben in the Norwegian Sea. The primary objective was to confirm hydrocarbons in the Early Turonian Intra Lange Formation sandstones.Operations and resultsAn 8 1/2 pilot hole NO 6407/1-U-1 was drilled off location to check for shallow gas down to section depth for 26 section. The well was drilled down to 912 m where a flow check confirmed gas bobbles with ROV. The U-1 pilot hole was cemented back, and it was decided to drill another pilot hole.The second pilot hole, NO 6407/1-U-2, was drilled to 1445 m, flow checked several intervals and only minor gas bubbles was observed at seabed with ROV. The pilot hole was cemented back, and the planned main well location was moved to second pilot hole location.Wildcat well 6407/1-9 was spudded with the semi-submersible installation West Hercules on 24 September 2021 and drilled to TD at 3914 m in the Early Cretaceous Lange Formation. Drilling to TD proceeded without significant problems, but hole stability issues created problems during logging. The well was drilled with seawater and hi-vis pills down to 1445 m, with Versatec oil-based mud from 1445 m to 3095 m, and with Exploradril oil-based mud from 3095 m to TD.Numerous Intra-Lange Formation sandstones were penetrated in the interval 3618 m to 3651 m. Light oil was proven in sands in the interval 3715 to 3740 m. Pore pressures between 549 to 549.5 bar was recorded in the upper part of the oil-bearing sands. The only oil shows reported from the well were in these sands.One core was cut from 3727 m to 3795 m in the Lange Formation with 94.4% recovery. MDT oil samples were taken at 3718.3 m in the Intra-Lange Formation sandstones. Due to problems with hole stability during wireline logging this was the only sampling station, hence, information about fluid and pressure properties were limited to the uppermost sand unit.The well was permanently abandoned on 28 October 2021 as an oil 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]1450.003914.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13727.03794.6[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]67.6Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet3323326491460181518152188218822592309230924822637317931793232 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]LWD - APWD RES GR DI3831445LWD - DI332383LWD - DI APWD RES GR DI14452345LWD - GR DI APWD RES30953914LWD - GR DI APWD RES GR CAL DEN23463095MDT CMR31503860MSIP QGEO22833914VSI49853910XLR32063728ZAIT NEXT XPT PEX HNGS30933914 -
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 formasjonstestCONDUCTOR36381.742383.70.00INTERM.201437.8261445.01.72FITINTERM.13 3/82338.817 1/22346.02.07LOTLINER9 5/83093.812 1/43095.01.92FITOPEN HOLE3914.08 1/23914.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3391.6019.017.0Spud Mud3431.3515.014.0Spud Mud14461.5931.021.5Glydril Plus15821.5028.014.5Glydril Plus18471.5932.021.0Glydril Plus23451.5933.020.0Glydril Plus25101.6853.09.5Versatec28111.7153.011.0Versatec30001.7254.010.5Versatec31481.7033.07.5Exploradrill36191.7236.09.0Exploradrill39141.5521.015.0Glydril Plus39141.7238.59.0Exploradrill