ODs Faktasider. Brønnbane / Leting. Generell informasjon. Brønnbane navn 6305/8-1 EXPLORATION. Faktakart i nytt vindu.

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1 Generell informasjon Brønnbane navn 6305/8-1 Type Formål Status Faktakart i nytt vindu Hovedområde Felt Funn EXPLORATION APPRAISAL P&A lenke NORWEGIAN SEA ORMEN LANGE Brønn navn 6305/ /5-1 ORMEN LANGE Seismisk lokalisering innline 2288-crossline 4182 NH 9602 Boret i utvinningstillatelse 250 Boreoperatør Boretillatelse 978-L Boreinnretning SCARABEO 5 Bore dager 61 Borestart Boreslutt Frigitt dato Publiseringsdato Opprinnelig formål Gjenåpnet Innhold Funnbrønnbane Norsk Hydro Produksjon AS APPRAISAL NO OIL/GAS NO 1. nivå med hydrokarboner, alder PALEOCENE 1. nivå med hydrokarboner, formasjon Avstand, boredekk - midlere havflate [m] Vanndybde ved midlere havflate [m] EGGA FM (INFORMAL) Totalt målt dybde (MD) [m RKB] Totalt vertikalt dybde (TVD) [m RKB] Maks inklinasjon [ ] 1.7 Temperatur ved bunn av brønnbanen [ C] Eldste penetrerte alder Eldste penetrerte formasjon Geodetisk datum NS grader LATE CRETACEOUS NISE FM ED ' 34.84'' N Side 1 av 10

2 ØV grader 5 24' 14.59'' E NS UTM [m] ØV UTM [m] UTM sone 31 NPDID for brønnbanen 4109 Brønnhistorie General Well 6305/8-1 was a joint appraisal well on the Ormen Lange discovery between licences 208, 209 and 250. It was committed to test the reservoir potential of the Tertiary sequence in licence 250. The main target was a sand ("Egga Member") in the Tang Formation. The exploration objectives of the well were to appraise the 6305/5-1 Ormen Lange gas discovery, to test the hydrocarbon potential, type of hydrocarbons and seal in a secondary target Miocene Channel feature, and to improve biostratigraphic control in the area. In addition, the well was designed to provide a variety of information required for development planning of the Ormen Lange discovery. Operations and results Appraisal well was spudded with the semi-submersible installation Scarabeo 5 on 13 July 2000 and drilled to a total depth of 3175 m in the Late Cretaceous (Campanian & Late Santonian) Nise Formation. No problems were experienced drilling through the ooze sequence. The well was drilled with bentonite spud mud down to 942 m. A water based mud type based on NaCl brine with glycol additives was used from 942 m to TD. No potential reservoir sandstone was encountered in the Miocene channel sequence, penetrated at 1653 m. The Egga reservoir sandstone was penetrated approximately 20 m higher than prognosed at 2898 m. A gas column of approximately 20 m was penetrated in the well. Below the gas was a thin 2-5 m oil leg, which was not prognosed. The oil was confirmed by MDT sampling, and geochemical analyses indicated that the oil is sourced from a comparatively immature source rock. The gas/oil/water contact was found at m. The upper part of the Egga Member, from 2900 m to 2935 m, was a loose sand interbedded with thin claystone beds. The lower part of the Egga reservoir unit consisted of a more massive sand sequence down to approx m. The Jorsalfare Formation consists of interbedded sands and mudstones. Good quality water, oil and gas samples were collected in the reservoir. The entire reservoir in the well was cored: Five cores were cut through the Våle (Egga Member) and Jorsalfare Formation sandstones from 2895 m to 2989 m. Core recovery was excellent (92 %- 100 %). Several MDT samples containing oil and gas were recovered from sampling points at m, 2922 m, m, 2914 m and m. MDT water samples were recovered from sampling points m, 2945 m and m. The well was plugged and abandoned as an oil and gas appraisal well on 8 September Testing No drill stem test was performed Borekaks i OD Side 2 av 10

3 Borekaksprøve, topp dybde [m] Borekaksprøve, bunn dybde [m] Borekaksprøve tilgjengelig YES Borekjerner i OD Kjerneprøve nummer Kjerneprøve - topp dybde Kjerneprøve - bunn Kjerneprøve dybde dybde - enhet [m ] [m ] [m ] [m ] [m ] Total kjerneprøve lengde [m] 90.7 Kjerneprøve tilgjengelig YES Kjernebilder m m m m m m m m m m m m m m m Side 3 av 10

4 m m m m m m m m m m Palynolgiske preparater i OD Prøve dybde Dybde enhet Prøve type Laboratorie [m] SWC RRI [m] DC RRI [m] DC RRI [m] SWC RRI [m] SWC RRI [m] SWC RRI [m] SWC RRI [m] SWC RRI [m] DC RRI [m] DC RRI [m] SWC RRI [m] SWC 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 Side 4 av 10

5 [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 [m] DC RRI Side 5 av 10

6 [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] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI Side 6 av 10

7 [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] C RRI [m] DC RRI [m] C RRI [m] DC RRI [m] C 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 Oljeprøver i OD Side 7 av 10

8 Test type Flaske nummer Topp dyp MD [m] Bunn dyp MD [m] Væske type Test tidspunkt Prøver tilgjengelig MDT MDT WATER :00 MDT OIL :00 YES YES Litostratigrafi Top depth [m] Lithostrat. unit 862 NORDLAND GP 862 NAUST FM 1590 KAI FM 1745 HORDALAND GP 1745 BRYGGE FM 2508 ROGALAND GP 2508 TARE FM 2596 TANG FM 2898 EGGA FM (INFORMAL) 2976 SHETLAND GP 2976 SPRINGAR FM 3132 NISE FM Spleisede logger Dokument navn Dokument format Dokument størrelse [KB] 4109 pdf 0.33 Geokjemisk informasjon Dokument navn Dokument format Dokument størrelse [KB] 4109_1 pdf _2 pdf _3 pdf _4 pdf _5 pdf _6 pdf _7 pdf 1.79 Side 8 av 10

9 4109_8 pdf 1.81 Logger Type logg Topp dyp Bunn dyp for for logg [m] logg [m] CMR ECS HNGS CMR DSI FMI HRLA HNGS MDT MSCT GR MSCT GR MWD - GR RES SON DIR PEX HALS TLD HGNS PWX DSI VSP VSP 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 INTERM 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 WATER BASED Dato, måling Side 9 av 10

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