ODs Faktasider. Brønnbane / Leting. Generell informasjon. Brønnbane navn 30/9-3 EXPLORATION. Faktakart i nytt vindu. lenke

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1 Generell informasjon Brønnbane navn 30/9-3 Type Formål Status Faktakart i nytt vindu Hovedområde Felt Funn EXPLORATION WILDCAT P&A lenke NORTH SEA Brønn navn 30/9-3 OSEBERG SØR 30/9-3 OSEBERG SØR Seismisk lokalisering NH SP 377 Boret i utvinningstillatelse 079 Boreoperatør Boretillatelse 400-L Boreinnretning Bore dager 58 Norsk Hydro Produksjon AS NORTRYM Borestart Boreslutt Frigitt dato Publiseringsdato Opprinnelig formål Gjenåpnet Innhold Funnbrønnbane WILDCAT NO OIL 1. nivå med hydrokarboner, alder MIDDLE JURASSIC 1. nivå med hydrokarboner, formasjon Avstand, boredekk - midlere havflate Vanndybde ved midlere havflate NESS FM Totalt målt dybde (MD) [m RKB] Totalt vertikalt dybde (TVD) [m RKB] Temperatur ved bunn av brønnbanen [ C] Eldste penetrerte alder Eldste penetrerte formasjon Geodetisk datum NS grader ØV grader EARLY JURASSIC DRAKE FM ED ' 16.33'' N 2 45' 37.55'' E Side 1 av 5

2 NS UTM ØV UTM UTM sone 31 NPDID for brønnbanen 55 Brønnhistorie General Well 30/9-3 was drilled on the Gamma West structure on the Oseberg Fault Block in the northern North Sea. The primary objective was to find hydrocarbon accumulations in the Middle Jurassic Brent Group. Secondary objective was to find additional hydrocarbon accumulations in the Early Jurassic. Planned TD was ca 75 m below a possible intra Triassic marker to a depth of /- 100 m Operations and results Wildcat well 30/9-3 was spudded with the semi-submersible installation Nortrym on 31 December The well was drilled to a depth of 3113 m into Drake Formation shales where the pipe got stuck and parted when pulling out of hole for logging. The fish was not recovered and no wire line logs were recorded below m due to fish in hole. All lithostratigraphic interpretation below this point is therefore based on cuttings description, core description, chromatograph data and ROP information. A sidetrack was decided to complete the well programme. The well was drilled with spud mud down to 625 m and with Invermul/EZmul Oil Based Mud from 625 m to TD. The Brent Group ( m) consisted of a 259 m thick Ness Formation ( m) made up of sandstones with stringers of shale, siltstone and coal and 74 m of Etive Formation ( m) sandstones. Based on chromatograph analysis on hydrocarbon samples extracted from core samples a GOC was found at ca 2734 m and an OWC at ca 2815 m, both located in the Ness Formation. From core and chromatograph data the Ness Formation had a gross pay of 103 m. The net gas pay was estimated to 22 m and the net oil pay to 36 m giving a total net pay of 58 m (cut off values porosity < 12%, permeability < l md). The average porosity was calculated from cores to 22.5 % and average horizontal permeability to 1090 md. Oil shows were recorded in Maastrichtian limestone in the upper part of the Shetland Group. Fifteen cores were cut in the well, all in the Brent Group, twelve in the Ness Formation and three in the Etive Formation. No wire line fluid samples were taken. The well was plugged back for sidetracking on 26 February as an oil discovery. Testing No drill stem test was performed. Borekaks i OD Borekaksprøve, topp dybde Borekaksprøve, bunn dybde Side 2 av 5

3 Borekaksprøve tilgjengelig Borekjerner i OD Kjerneprøve nummer Kjerneprøve - topp dybde Kjerneprøve - bunn Kjerneprøve dybde dybde - enhet [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] [m ] Total kjerneprøve lengde Kjerneprøve tilgjengelig Palynolgiske preparater i OD Prøve dybde Dybde enhet Prøve type Laboratorie SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB SWC WESTLB Side 3 av 5

4 Oljeprøver i OD Test type Flaske nummer Topp MD Bunn MD Væske type Test tidspunkt Prøver tilgjengelig DST Litostratigrafi Top depth Lithostrat. unit 135 NORDLAND GP 594 UTSIRA FM 843 HORDALAND GP 994 SKADE FM 2051 ROGALAND GP 2051 BALDER FM 2131 SELE FM 2220 LISTA FM 2344 VÅLE FM 2354 SHETLAND GP 2354 HARDRÅDE FM 2578 KYRRE FM 2655 VIKING GP 2655 HEATHER FM 2677 BRENT GP 2712 NESS FM 2971 ETIVE FM 3045 DUNLIN GP 3045 DRAKE FM er - eldre OD WDSS rapporter og andre relaterte dokumenter navn format størrelse [KB] 55_01_WDSS_General_Information pdf _02_WDSS_completion_log pdf 0.28 Side 4 av 5

5 er - rapportert av utvinningstillatelsen (frigitt ihht til regelverk) navn format størrelse [KB] 55_30_9_3_Completion_log pdf _30_9_3_Completion_Report pdf Logger Type logg Topp Bunn for for logg logg CDL CAL GR DIFL LSBHC GR SP DIFL LSBHC GR SP Foringinsrør og formasjonsstyrketester Type utforing Utforing diam. [tommer] Utforing dybde Brønnbane diam. [tommer] Brønnbane Slam egenvekt ekvivalent [g/cm3] Type formasjonstest CONDUCTOR LOT SURF.COND LOT INTERM. 13 3/ / LOT OPEN HOLE / LOT Boreslam Dybde Egenvekt, Viskositet, Flytegrense Type slam MD slam [g/cm3] slam [mpa.s] [Pa] OIL BASED OIL BASED OIL BASED OIL BASED OIL BASED OIL BASED OIL BASED OIL BASED OIL BASED OIL BASED OIL BASED Dato, måling Side 5 av 5