30/6-30
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Generell informasjon
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Brønnhistorie
Wildcat well 30/6-30 was spudded with the semi-submersible installation Transocean Arctic on 18 October 2018. A 9 7/8” pilot hole was drilled from 209 through the Utsira sand and down to 1000 m. No shallow gas or water flow was reported. The well was drilled to TD at 3493 m in the Early Jurassic Drake Formation. Operations proceeded without significant problems. The well was drilled with seawater and hi-vis pills down to 1000 m and with oil-based mud from 1000 m to TD.The Ness Formation was penetrated from 3260 to 3336 m. The Ness Formation consists of interbedded sands, shales and coals, and the reservoir quality was better than prognosed with higher net to gross and thicker individual sand units. Ness proved to be hydrocarbon bearing in three sand units. Each sand exhibits hydrocarbons in down-to situations and pressure data demonstrate that the three hydrocarbon bearing sands are not in pressure communication with each other. Seventeen metres of net hydrocarbon pay was found within the gross 56 metre column. The primary Oseberg Formation target was water bearing as indicated by logs and proven by a water sample in the Oseberg at 3363 m. The Oseberg Formation is 86 metres thick with very good reservoir properties. The overlying Etive Formation also has very good reservoir quality and was proven to be in pressure communication with the Oseberg. The Etive Formation had good oil shows in sandstones with stain, strong petroleum odour, direct and cut fluorescence and strong residual ring. The underlying Rannoch had weaker shows in sandstones with no stain or odour, but with direct and cut fluorescence and weak residual ring.Four cores were cut in the interval 3278 to 3494.48 m (TD) with 100% recovery. MDT samples were taken at 3313.49 m (gas), 3325.6 m (gas) and 3362.61 m (water).The well was permanently abandoned on 18 November 2018 as a gas/condensate 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]1000.003494.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet13278.03321.6[m ]23321.63375.7[m ]33375.73440.2[m ]43440.23494.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]216.5Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet144725920920203820382118231123113260326033363350336134473447 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]AIT QGEO PPC MSIP PPC31893494LWD - DI144209LWD - DI GR RES APWD2091000LWD - DI GR RES APWD SON2091000LWD - DI GR RES APWD SON10003196LWD - DI GR RES DEN NEU APWD SON31963278MDT31893494XPT PEX CMR31893494 -
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 formasjonstestCONDUCTOR30209.036209.00.00INTERM.13 3/8994.017 1/21000.01.70FITINTERM.9 5/83189.612 1/43196.01.86FITOPEN HOLE3493.08 1/23493.00.00 -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling2091.498.0Kill mud3691.248.0Kill mud10001.2413.0INNOVERT Yellow15781.3427.0INNOVERT Yellow29751.4424.0INNOVERT Yellow30021.3421.0INNOVERT Yellow31961.4317.0INNOVERT Yellow31961.3421.0INNOVERT Yellow32151.4320.0INNOVERT Yellow34931.4323.0INNOVERT Yellow