2/5-15
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Generell informasjon
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Brønnhistorie
GeneralWell 2/5-15 was drilled to test the Gomez prospect north of the Tor Field on the Steinbit Terrace in the North Sea. The main objective of the well was to investigate the presence of hydrocarbons in the Rogaland Group with the Ty/Heimdal Formations and/or Borr sandstone Member in the Lista and Våle Formations as the primary reservoir target.Operations and resultsWildcat well 2/5-15 was spudded with the semi-submersible installation Borgland Dolphin on 7 August 2021 and drilled to TD at 3323 m in the Paleocene age Ekofisk Formation. Thirty-five hours were spent fishing for stuck wire line equipment during logging operations, otherwise operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 596 m, with Versatec oil-based mud from 596 m to 3115 m, and with Exploradril oil-based mud from 3115 m to TD.Well 2/5-15 encountered oil in the primary target in the Våle Formation, 23 metres of which was homogeneous andstone of poor reservoir quality. The oil/water contact was not encountered. Initial analysis indicated significant uncertainty regarding the oil mobility. Post-well studies concluded that the well encountered sands with low effective porosity and non-producible hydrocarbons. Shows on the core from the intra-Våle Formation sandstones were described as "very faint odour, poor patchy light brown oil stain, even to patchy moderate yellow direct fluorescence, moderate to fast streaming bluish white cut fluorescence, moderate cream residual fluorescence". Otherwise, here were no oil shows above the OBM in the well.One 19.12 m core was cut from 3223 m in intra- Våle Formation sandstone (Borr informal Member) and into marls of the Våle Formation. MDT fluid samples were collected: 6 samples, mainly mixture of formation water and OBM fluid at 3230.0 and two samples, mainly mixture of formation water and OBM fluid at 3220 m.The well was permanently abandoned on 24 September 2021 as a non-producible 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]610.003323.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13223.03242.1[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]19.1Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet9817311731281530583058307931223201321732393247 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]AIT PPC MSIP PPC NGIT31073324LWD - ECD RES GR DIR163596LWD - ECD RES GR DIR SON163606LWD - GR INC PWD RES DIR SON CAL16133323LWD - PWD RES GR DIR SON5961613MDT32203230MDT32223231SWC GR MSCT31203251SWC GR XLR32103284VSP GR22433310XPT XLD NEXT PEX HNGS CMR31073315 -
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 formasjonstestCONDUCTOR30163.036163.00.00INTERM.20590.026590.01.54FITINTERM.13 3/81606.017 1/21615.91.80FITINTERM.9 5/83107.512 1/43107.51.95FITOPEN HOLE3323.08 1/23323.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling1641.041.01.0Spud mud6061.041.01.0Spud mud - Hi Vis11111.6440.019.0Versatec11131.3532.09.0Versatec15261.3627.011.0Versatec16041.6440.019.0Versatec16131.3531.08.5Versatec18481.6621.016.0Exploradrill19601.6442.021.0Versatec31151.6442.018.0Versatec31921.6621.011.0Exploradrill33221.6621.016.0Exploradrill