30/6-10
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Generell informasjon
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Brønnhistorie
GeneralWell 30/6-10 was drilled to appraise the hydrocarbon potential in the Alfa structure on the Oseberg Field in the North Sea. The main objective was to define the gas/oil contact and to obtain cores from this zone.Operations and resultsAppraisal well 30/6-10 was spudded with the semi-submersible installation Treasure Scout on 4 October 1982 and drilled to TD at 2656 m in the Early Jurassic Drake Formation. Some problems were encountered while running both 20" and 13 3/8" casing. The drill string got stuck at 1992 m and leakages in the BOP stack after installing the 13 3/8" casing also occurred. The well was drilled with seawater and hi-vis pills down to 970 m and with KCl/polymer mud from 970 m to TD. At 1992 m 15 m3 diesel and 15.9 m3 Imco spot was pumped to free the pipe.First oil show in the well was recorded at 1980 m in limestone stringers at top Balder Formation level. Poor oil shows were recorded in the intervals 2030 to 2100 m and 2215 m to 2253 m. Good oil shows were recorded on cuttings from marls and limestones in the Shetland Group from 2253 m to 2380 m, then again poor shows were recorded down to top of the Brent Group at 2457 m. The well encountered oil and gas in Middle Jurassic Brent sandstones. The Brent Group was found hydrocarbon bearing over the entire 118 m interval. Net pay was 37.3 m with 23.3 % average porosity and 23.9% average water saturation. The gas/oil contact was found from RFT pressure gradients to be at 2520 m in the Ness Formation, but no oil/water contact was encountered.A total of eleven conventional cores were cut from the top of the Ness Formation and down into the Dunlin Group shales. Driller depths through the cored section are 0.0 to 2.5m deeper than logger's depth. The estimated gas/oil contact is captured in core number 6. Segregated RFT samples were taken at 2546.1 m (gas, oil and filtrate), 2555.5 m (gas, oil and filtrate), and 2467.5 m (gas and filtrate).The well was plugged back on 2 December 1982 for sidetracking to well 30/6-10 A.TestingNo drill stem test was performed, instead testing was to be done in the 30/6-10 A sidetrack. -
Borekaks i Sokkeldirektoratet
Borekaks i Sokkeldirektoratet Borekaks tilgjengelig for prøvetaking?YESBorekaks i Sokkeldirektoratet Borekaksprøve, topp dybde [m]Borekaksprøve, bunn dybde [m]220.002655.00 -
Borekjerner i Sokkeldirektoratet
Borekjerner i Sokkeldirektoratet Kjerneprøve nummerKjerneprøve - topp dybdeKjerneprøve - bunn dybdeKjerneprøve dybde - enhet12461.02475.0[m ]22475.02488.1[m ]32493.02502.0[m ]42503.02509.5[m ]52510.02517.2[m ]62517.22528.4[m ]72530.02548.0[m ]82548.02551.0[m ]92553.02554.4[m ]102554.52572.5[m ]112572.52590.5[m ]Borekjerner i Sokkeldirektoratet Total kjerneprøve lengde [m]119.3Borekjerner i Sokkeldirektoratet Kjerner tilgjengelig for prøvetaking?YES -
Kjernebilder
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Palynologiske preparater i Sokkeldirektoratet
Palynologiske preparater i Sokkeldirektoratet Prøve dybdeDybde enhetPrøve typeLaboratorie2385.5[m]SWCRRI2396.0[m]SWCRRI2398.0[m]SWCRRI2402.0[m]SWCRRI2406.0[m]SWCRRI2410.0[m]SWCRRI2413.0[m]SWCRRI2415.5[m]SWCRRI2417.0[m]SWCRRI2419.0[m]SWCRRI2420.0[m]SWCRRI2434.0[m]SWCRRI2445.0[m]SWCRRI2454.0[m]SWCRRI2465.0[m]CRRI2469.9[m]CRRI2472.5[m]CRRI2473.0[m]CRRI2477.3[m]CRRI2479.5[m]CRRI2480.2[m]CRRI2485.3[m]CRRI2486.8[m]CRRI2606.0[m]SWCRRI2627.0[m]SWCRRI2638.0[m]SWCRRI2647.0[m]SWCRRI2655.0[m]SWCRRI -
Oljeprøver i Sokkeldirektoratet
Oljeprøver i Sokkeldirektoratet Test typeFlaske nummerTopp dyp
MD [m]Bunn dyp
MD [m]Væske typeTest tidspunktPrøver tilgjengeligDSTRFT22467.500.00YES -
Litostratigrafi
Litostratigrafi Topp Dyb [mMD RKB]Litostrat. enhet1326878901981198120542158224622532416241624582458254125752575 -
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter
Dokumenter – eldre Sokkeldirektoratets WDSS rapporter og andre relaterte dokumenter Dokument navnDokument formatDokumentstørrelse [MB]pdf0.18pdf0.20 -
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk)
Dokumenter – rapportert av utvinningstillatelsen (frigitt ihht til regelverk) Dokument navnDokument formatDokumentstørrelse [MB]pdf2.29pdf21.49 -
Logger
Logger Type loggTopp dyp for logg [m]Bunn dyp for logg [m]CBL VDL12002134CST12272420CST24122653DLL MSFL23702650HDT19322650ISF LSS1322652LDT CNL9502652NGT21382652RFT24582574RFT24672467RFT25212522VELOCITY3102654 -
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 formasjonstestCONDUCTOR30219.036220.00.00LOTSURF.COND.20949.026970.01.56LOTINTERM.13 3/82138.017 1/22432.01.79LOTOPEN HOLE2656.012 1/42656.00.00LOT -
Boreslam
Boreslam Dybde MD [m]Egenvekt, slam [g/cm3]Viskositet, slam [mPa.s]Flytegrense [Pa]Type slamDato, måling3001.1040.0waterbased10001.2040.0waterbased15201.3045.0waterbased20201.3554.0waterbased26301.3653.0waterbased -
Trykkplott
Trykkplott Porertrykksdataene kommer fra logging i brønnen hvis ingen annen kilde er oppgitt. I noen brønner der trykk ikke er logget, er det brukt informasjon fra formasjonstester eller brønnspark. Trykkdataene er rapportert inn til Oljedirektoratet og videre prosessert og kvalitetssikret av IHS Markit.Trykkplott Dokument navnDokument formatDokumentstørrelse [MB]pdf0.22