ODs Faktasider. Brønnbane / Leting. Generell informasjon. Side 1 av 10. Utskriftstidspunkt: :53

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1 Generell informasjon Side 1 av 10

2 Side 2 av 10

3 Brønnbane navn 6305/9-1 Type Formål Status Pressemelding Faktakart i nytt vindu Hovedområde EXPLORATION WILDCAT P&A lenke lenke NORWEGIAN SEA Brønn navn 6305/9-1 Seismisk lokalisering Boret i utvinningstillatelse 252 Boreoperatør Boretillatelse 1008-L Boreinnretning Bore dager 23 NH-OLSE98R01-inline5170 & xline3865 Norsk Hydro Produksjon AS TRANSOCEAN ARCTIC Borestart Boreslutt Frigitt dato Publiseringsdato Opprinnelig formål Gjenåpnet Innhold Funnbrønnbane Avstand, boredekk - midlere havflate [m] Vanndybde ved midlere havflate [m] WILDCAT NO DRY NO Totalt målt dybde (MD) [m RKB] Totalt vertikalt dybde (TVD) [m RKB] Maks inklinasjon [ ] 2.9 Temperatur ved bunn av brønnbanen [ C] Eldste penetrerte alder Eldste penetrerte formasjon Geodetisk datum NS grader ØV grader LATE CRETACEOUS SPRINGAR FM ED ' 59.96'' N 5 59' 14.63'' E NS UTM [m] ØV UTM [m] UTM sone 31 NPDID for brønnbanen 4297 Side 3 av 10

4 Brønnhistorie General The exploration well 6305/9-1 was drilled on the "Blåveis" prospect in the southeastern part of the block, east of the Ormen Lange Field. The main objective of the well was to test if hydrocarbons were present in the Tertiary Egga Member in the Våle Formation, and in the Maastrichtian Springar Formation sandstones. Operations and results Wildcat well 6305/9-1 was spudded with the semi-submersible installation Transocean Arctic on 9 July 2001 and drilled to TD at 2655 m in the Late Cretaceous Springar Formation. The well was drilled with seawater and hi-vis pills down to 680 m and with GLYDRIL KCl/polymer mud from 680 m to TD. In the Lower Paleocene an Egga Member sandstone of the Våle Formation was found, with good sands that became increasingly interbedded with claystone towards top of the underlying Springar Formation. The clean sandstone intervals were high porosity - high permeability reservoirs. No hydrocarbon indications were observed. One core was cut in the Egga Member, covering 17.4 m of the 54 m thick sandstone. The core shows a deposition within stacked channels and related overbank areas of intraslope basin turbidite system. The reservoir properties in the cored interval show 27.5% porosity and 2280 md permeability. No core was taken in the Springar Formation. The reservoir quality of the Springar Formation clean sands is about similar to the Egga Member but the net sand fraction is less. The geology of the well was very much as prognosed, especially the formation tops in the lower part of the well came in almost as prognosed. The formation pressure in the lower Tertiary was hydrostatic. Organic geochemical analysis showed vitrinite reflectance Ro values in the range of for the Egga reservoir sandstone and Springar Formation, which means that source rocks at this level are thermally immature for hydrocarbon expulsion. Extracts from samples of the Egga Sandstone and Springar Formation gave only traces of early mature, locally derived hydrocarbons. No fluid sample was attempted. The well was permanently abandoned on 31 July 2001 as a dry hole. Testing No drill stem test was performed. Borekaks i OD Borekaksprøve, topp dybde [m] Borekaksprøve, bunn dybde [m] Borekaksprøve tilgjengelig YES Borekjerner i OD Side 4 av 10

5 Kjerneprøve nummer Kjerneprøve - topp dybde Kjerneprøve - bunn Kjerneprøve dybde dybde - enhet [m ] Total kjerneprøve lengde [m] 17.4 Kjerneprøve tilgjengelig YES Kjernebilder m m m m m m m m m m m m m m m m m M Palynolgiske preparater i OD Side 5 av 10

6 Prøve dybde Dybde enhet Prøve type Laboratorie [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI Side 6 av 10

7 [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] SWC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] C RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] SWC RRI [m] DC RRI [m] SWC RRI [m] SWC RRI [m] SWC RRI [m] SWC RRI [m] SWC RRI [m] SWC RRI Side 7 av 10

8 [m] SWC RRI [m] DC RRI [m] SWC RRI [m] DC RRI [m] SWC RRI [m] DC RRI [m] SWC RRI [m] DC RRI [m] DC RRI [m] SWC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] DC RRI [m] SWC RRI [m] DC RRI Litostratigrafi Top depth [m] Lithostrat. unit 211 NORDLAND GP 211 NAUST FM 1074 KAI FM 1303 HORDALAND GP 1303 BRYGGE FM 1669 ROGALAND GP 1669 TARE FM 1948 TANG FM 2437 VÅLE FM 2469 EGGA FM (INFORMAL) 2523 SHETLAND GP 2523 SPRINGAR FM Spleisede logger Dokument navn Dokument format Dokument størrelse [KB] 4297 pdf 0.21 Side 8 av 10

9 Geokjemisk informasjon Dokument navn Dokument format Dokument størrelse [KB] 4297_1 pdf 3.01 Logger Type logg Topp dyp Bunn dyp for for logg [m] logg [m] CMST GR DSI GR ACTS DUAL CSI-GR VSP MDT GR MWD LWD MWD LWD - ADN RAB MWD LWD - ADN RAB MWD LWD - CDR MWD LWD - CDR ISONIC Foringinsrør og formasjonsstyrketester Type utforing Utforing diam. [tommer] Utforing dybde [m] Brønnbane diam. [tommer] Brønnbane dyp [m] Slam egenvekt ekvivalent [g/cm3] Type formasjonstest CONDUCTOR LOT SURF.COND LOT INTERM. 9 5/ / LOT OPEN HOLE / LOT Boreslam Dybde Egenvekt, Viskositet, Flytegrense Type slam MD [m] slam [g/cm3] slam [mpa.s] [Pa] WATER BASED WATER BASED WATER BASED WATER BASED WATER BASED Dato, måling Side 9 av 10

10 WATER BASED WATER BASED WATER BASED WATER BASED Side 10 av 10