6507/5-6 S
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Brønnhistorie
GeneralWell 6507/5-6 S was drilled from the Skarv A template on the Revfall Fault Complex in the Norwegian Sea. The objective of the well was to prove gas in Late Cretaceous reservoir rocks (the Lysing formation) in the Snadd North prospect. It was drilled primarily for data acquisition to identify the presence and producability of the Lysing reservoir, with the well path planned for optimal data recovery, but the well was also planned to be used as a producer.Operations and resultsExploration well 6507/5-6 S was spudded with the semi-submersible installation Borgny Dolphin on 12 January 2010. The well was drilled as the fourth well in the batch drilling operations for the 17 1/2" and 12 1/4" sections on the Skarv A template. Initially the well was drilled to 4454 m. Then, due to hole instability and operational problems, the well was plugged back and sidetracked from 2346.4 m after a core was taken in the reservoir. Reservoir logs are therefore primarily taken in the sidetrack T2. Final TD was reached at 4991 m (2906.7 m TVD) in Late Turonian age claystone in the Lange Formation. The well was drilled with seawater and hi-vis pills down to 1122 m and with Carbosea oil based mud from 1129 m to TD in both the main and sidetrack well bores.The Lysing Formation was encountered at 4676 m ( 2798 m TVD). Good quality hydrocarbon-bearing sandstones were discovered. A total thickness of 32 m TVD of Lysing sandstone was drilled, with net/gross of 0.88 and average effective porosity of 0.21. The sandstones in the core were of mixed quality, predominantly medium-fine grained and hydrocarbon-stained. The reservoir was hydrocarbon bearing throughout. No oil shows were reported from the well.One 18 m core was cut in Lysing Formation sandstone from 4436 m to 4454 m, in the main bore 6507/5-6 S. Gas condensate samples were taken with the RCI tool at 4737 m and at 4710.5 m in the sidetrack well bore.The well was permanently abandoned on 8 June 2010 as a gas discovery.TestingNo drill stem test was performed.ReclassificationOn 13 October 2017 the well was reclassified as an appraisal well for the discovery "6507/5-3 SNADD" from 2000. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]1150.004990.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet14436.04454.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]18.5Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
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 formasjonstestCONDUCTOR30439.036446.00.00LOTSURF.COND.18 5/81136.0241143.01.67LOTINTERM.13 5/82538.017 1/22548.01.67LOTINTERM.9 7/84679.012 1/44689.01.90LOTOPEN HOLE4991.08 1/24881.00.00LOT -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL GR CN TTRM 18 5/83561080MWD - CAL SON PRESSURE00MWD - DEN NEU CAL SON25384426MWD - DIR356446MWD - GR RES ECD DIR4462548MWD - GR RES ECD DIR-25384426MWD - GR RES ECD DIR DEN NEU-00SBT GR CCL 13 5/811002378 -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet356356147622882288271227122842289728972930467646764772 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3491.03SPUD MUD11441.05SPUD MUD15291.5041.0OBM25481.5133.0OBM34131.5836.0OBM41831.5835.0OBM44301.60Water44301.60Water44301.20Brine44361.6036.0OBM45701.6038.0OBM49911.6035.0OBM50171.53Brine50171.50Synthetic -
Tynnslip i Sokkeldirektoratet
Tynnslip i Sokkeldirektoratet DybdeEnhet4436.88[m ]4438.73[m ]4439.35[m ]4441.34[m ]4442.52[m ]4445.95[m ]4446.60[m ]4448.30[m ]4450.55[m ]4452.36[m ]4453.95[m ]