34/10-54 S
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Generell informasjon
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Brønnhistorie
GeneralWell 34/10-54 S was drilled to test the Valemon Nord prospect on the Tjalve Terrace in the North Sea. The prospect is situated north of the Valemon Field, between the Gullfaks South, and the Kvitebjørn fields. The primary objective was to prove commercial hydrocarbon volumes in the Middle Jurassic Brent Group.Operations and resultsWildcat well 34/10-54 S was spudded with the semi-submersible installation Transocean Leader on 2 September 2013 and drilled to TD at 4280 m (4249 m TVD) m in the Early Jurassic Burton Formation. Two pilot holes was drilled on location to check for shallow gas. No shallow gas was observed. The well was drilled with a slightly deviated well path below 2700 m with the purpose of hitting the Brent Group optimally. After cutting core no 5 from 4107 - 4128 m, operations were suspended for three weeks for inspection and repairs of fairlead on anchor line #1. The well was drilled with seawater and hi-vis pills down to 1217 m and with oil based XP-07 mud from 1217 m to TD.Gas/condensate and oil down to situation was encountered in the Jurassic Brent Group. Gas/condensate was encountered also in the Jurassic Cook Formation. Pressure testing identified several pressure systems. No reliable hydrocarbon gradient could be defined and the hydrocarbon phases are interpreted from sampling. Oil shows were recorded on cores from the reservoir zones; otherwise, no oil shows were recorded in the well.Seven cores were cut in the well. Cores 1 to 5 recovered 168.2 m core from the Brent Group the interval 3957 to 4128 m (98.4% recovery). Cores 6 and 7 recovered 19.7 m core from the Cook Formation in the interval 4179 m to 4202 m (85.7% recovery). MDT fluid samples were taken at 3953.01 m (gas condensate), 3987.53 m (gas condensate), 4024 m (oil), 4041.98 m (oil), 4059.01 m (oil), 4068.82 m (water), 4085.52 m (gas condensate), and at 4181.2 m (gas condensate).The well was plugged back for side tracking on 11 February 2014. It is classified as an oil and 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]1800.004280.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13957.03995.0[m ]23997.04023.7[m ]34024.04053.3[m ]44053.34107.0[m ]54107.04126.6[m ]64179.04193.6[m ]74195.04200.2[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]187.0Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligMDT3988.000.00CONDENSATE27.06.2014 - 00:00YESMDT4024.000.00OIL27.06.2014 - 00:00YESMDT4041.980.00OIL01.07.2014 - 00:00NOMDT4059.000.00OIL01.07.2014 - 00:00YESMDT4085.500.00OIL17.07.2014 - 00:00YESMDT4181.200.00OIL18.07.2014 - 00:00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet164164940994105210521857185719241930206820812081240832753459367836783756383338603860395239523980406840764117411741774230 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]AIT PEX HNGS38224280AIT PPC BMSIP PPC BPEX30123829AIT PPCI MSIP PEX10372997CMR GR39304268MDT GR39534204MDT GR39534068MDT PA MINIDST39873987MDT PA MINIDST39874187MWD-ARC6 TELE67539584280MWD-ARCVRES PP SONI82512163012MWD-ECO TELE SONI4751631216MWD-PDX5 ARC8 TELE SONI82535913829MWD-RAB6 ARC TELE41284179MWD-RAB6 TST6FPWD PDRIVE6 TELE38293897MWD-RAB6 TST6FPWD PERI115 TELE6738973958OBMI MSIP GR38124283VSI4 GR28844264VSP GR1632990 -
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 formasjonstestCONDUCTOR30249.936253.00.00SURF.COND.201209.8261207.01.61FITINTERM.142994.417 1/23012.01.87LOTINTERM.9 7/83820.012 1/43829.02.06FITOPEN HOLE4280.08 1/24280.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling12071.3927.0OBM-Low ECD12171.4223.0OBM-Low ECD16601.3933.0OBM-Low ECD20751.3925.0OBM-Low ECD22451.7238.0OBM-Low ECD27601.3924.0OBM-Low ECD28111.7237.0OBM-Low ECD28131.7236.0OBM-Low ECD30121.6023.0OBM-Low ECD36321.7230.0OBM-Low ECD36451.7339.0OBM-Low ECD37201.7235.0OBM-Low ECD37301.7230.0OBM-Low ECD38291.7236.0OBM-Low ECD38311.7339.0OBM-Low ECD38441.9638.0OBM-Low ECD-HTHP38571.9542.0OBM-Low ECD-HTHP38751.7233.0OBM-Low ECD38751.7233.0OBM-Low ECD38971.9638.0OBM-Low ECD-HTHP39581.9131.0OBM-Low ECD-HTHP40241.9130.0OBM-Low ECD-HTHP41071.9134.0OBM-Low ECD-HTHP41281.9141.0OBM-Low ECD-HTHP41581.9142.0OBM-Low ECD-HTHP42251.9144.0OBM-Low ECD-HTHP42801.9144.0OBM-Low ECD-HTHP