ODs Faktasider. Brønnbane / Leting. Generell informasjon. Brønnbane navn 6608/11-1 EXPLORATION. Faktakart i nytt vindu. lenke

Transkript

1 Utskriftstidspunkt: :16 Generell informasjon Brønnbane navn 6608/11-1 Type Formål Status Faktakart i nytt vindu Hovedområde EXPLORATION WILDCAT P&A lenke NORWEGIAN SEA Brønn navn 6608/11-1 Seismisk lokalisering NRGS SP Boret i utvinningstillatelse 128 Boreoperatør Boretillatelse 523-L Boreinnretning Bore dager 26 Den norske stats oljeselskap a.s DYVI STENA Borestart Boreslutt Frigitt dato Publiseringsdato Opprinnelig formål Gjenåpnet Innhold Funnbrønnbane Avstand, boredekk - midlere havflate Vanndybde ved midlere havflate WILDCAT NO DRY NO Totalt målt dybde (MD) [m RKB] Totalt vertikalt dybde (TVD) [m RKB] Eldste penetrerte alder Eldste penetrerte formasjon Geodetisk datum NS grader ØV grader LATE TRIASSIC GREY BEDS (INFORMAL) ED ' 4.02'' N 8 23' 38.67'' E NS UTM ØV UTM UTM sone 32 NPDID for brønnbanen 936 Side 1 av 6

2 Brønnhistorie General Well 6608/11-1 was drilled on the Nordland Ridge, west of the Helgeland Basin and east of the Norne Field area. The Primary objective was sandstones of Middle to Early Jurassic age. The well should drill into Triassic deposits expected at 2010 m and TD was planned at 2095 m. Operations and results Wildcat well 6608/11-1 was spudded with the semi-submersible installation Dyvi Stena on 19 July Due to unexpected geological development, the well was terminated already at 1620 m in Late Triassic Grey Beds. Drilling proceeded without significant problems. The well was drilled with seawater bentonite spud mud down to 695 m, with KCl/polymer mud from 695 m to 1619 m, and with bentonite/polymer mud from 1619 m to TD. The well penetrated Pliocene rocks with traces of tuff, which were interpreted as reworked Paleocene tuffaceous rocks. Due to erosion these Pliocene rocks were situated on top of the Paleocene deposits, implying that most of the Tertiary rocks are missing. The Paleocene sediments were resting on Early Jurassic sediments, Åre Formation at 1233 m. Only the lowermost part of the Åre Formation was present due to erosion, implying that the whole of the Cretaceous and most of the Jurassic succession is missing in the well. The penetrated Åre Formation consisted of interbedded sandstones and claystones with minor coal beds. The electrical logs showed that the formation was water filled. No shows were reported from any section in the well neither on-rig, or from post-well geochemical analyses. One core was cut in the interval m in Triassic rocks. No wire line pressure data or fluid samples were collected in the well. The well was permanently abandoned on 13 August 1986 as a dry well Testing No drill stem test was performed Borekaks i OD Borekaksprøve, topp dybde Borekaksprøve, bunn dybde Borekaksprøve tilgjengelig YES Borekjerner i OD Side 2 av 6

3 Kjerneprøve nummer Kjerneprøve - topp dybde Kjerneprøve - bunn Kjerneprøve dybde dybde - enhet [m ] Total kjerneprøve lengde 25.7 Kjerneprøve tilgjengelig YES Kjernebilder m m m m m m Palynolgiske preparater i OD Prøve dybde Dybde enhet Prøve type Laboratorie DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT Side 3 av 6

4 DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT DC STRAT Litostratigrafi Top depth Lithostrat. unit 406 NORDLAND GP 406 NAUST FM 1177 ROGALAND GP 1177 TARE FM 1222 TANG FM 1233 BÅT GP 1233 ÅRE FM 1318 GREY BEDS (INFORMAL) Geokjemisk informasjon Side 4 av 6

5 navn format størrelse [KB] 936_1 pdf _2 pdf _3 pdf _4 pdf 3.74 er - eldre OD WDSS rapporter og andre relaterte dokumenter navn format størrelse [KB] 936_01_WDSS_General_Information pdf _02_WDSS_completion_log pdf 0.16 er - rapportert av utvinningstillatelsen (frigitt ihht til regelverk) navn format størrelse [KB] 936_01_6608_11_1_Completion_report pdf _02_6608_11_1_Completion_log pdf _6608_11_1_COMPLETION_REPORT_AND _LOG pdf Logger Type logg Topp dyp Bunn dyp for for logg logg CST CST ISF BHC GR ISF BHC MSFL GR ISF LSS GR LDL CNL GR LDL GR LDL GR MWD - GR RES SHDT GR VSP Foringinsrør og formasjonsstyrketester Side 5 av 6

6 Type utforing Utforing diam. [tommer] Utforing dybde Brønnbane diam. [tommer] Brønnbane dyp Slam egenvekt ekvivalent [g/cm3] Type formasjonstest CONDUCTOR LOT SURF.COND LOT INTERM. 13 3/ / LOT Boreslam Dybde Egenvekt, Viskositet, Flytegrense Type slam MD slam [g/cm3] slam [mpa.s] [Pa] Dato, måling WATER BASED WATER BASED WATER BASED WATER BASED WATER BASED WATER BASED WATER BASED WATERBASED WATER BASED WATER BASED WATER BASED WATER BASED WATER BASED WATER BASED Side 6 av 6