- Generell informasjon
Brønnbane navn
6507/3-6
Type
EXPLORATION
Formål
WILDCAT
Status
P&A
Pressemelding
Faktakart i nytt vindu
Hovedområde
NORWEGIAN SEA
Brønn navn
6507/3-6
Seismisk lokalisering
inline 3700 & crossline 2020(DNO07M01)
Boret i utvinningstillatelse
Boreoperatør
Det norske oljeselskap ASA (old)
Boretillatelse
1235-L
Boreinnretning
Bore dager
26
Borestart
29.05.2009
Boreslutt
23.06.2009
Frigitt dato
23.06.2011
Publiseringsdato
23.06.2011
Opprinnelig formål
WILDCAT
Gjenåpnet
NO
Innhold
DRY
Funnbrønnbane
NO
Avstand, boredekk - midlere havflate [m]
25.0
Vanndybde ved midlere havflate [m]
377.0
Totalt målt dybde (MD) [m RKB]
1650.0
Totalt vertikalt dybde (TVD) [m RKB]
1650.0
Maks inklinasjon [°]
0.6
Eldste penetrerte alder
EARLY JURASSIC
Eldste penetrerte formasjon
ÅRE FM
Geodetisk datum
ED50
NS grader
65° 47' 47.37'' N
ØV grader
7° 55' 16.5'' E
NS UTM [m]
7297834.85
ØV UTM [m]
450648.81
UTM sone
32
NPDID for brønnbanen
6073
 
 
- Brønnhistorie
General
Well 6507/3-6 was drilled on the Sør High, east of the Dønna Terrace in the Norwegian Sea. The primary objective was to test the hydrocarbon potential of the Fangst and Båt group reservoirs. Garn Formation, if present, was expected to be 10 thick. The Ile Formation reservoir would most likely be present, with a thickness of about 15 meters. The Tilje Formation was expected to make up the majority of the reservoir thickness and volume. The well was planned to be drilled down into the Åre Formation of early Jurassic age.
Operations and results
Wildcat well 6507/3-6 was spudded with the semi-submersible installation Bredford Dolphin on 23 June 2009 and drilled to TD at 1650 m in the Early Jurassic Åre Formation. The well was drilled with spud mud down to 459 m, with KCl/GEM water based mud from 459 m to 612 m, and with Performadril mud from 612 m to TD.
Good reservoir sandstones were proven both in the Garn, Ile and Tilje formations. As expected, the Garn and Ile formations were relatively thin, 6 and 15.5 m, respectively, but with high N/G and porosities well above 30 %. The main reservoir of the Tilje and Åre formation, was 164.5m thick and also contained sandstones with high N/G and good reservoir properties.
All reservoir sandstones were proven water filled and no shows were observed.
After reaching TD, VSP logging and MSCT sampling was performed. No cores were cut and no wire line fluid samples were taken.
The well was permanently abandoned on 23 June 2009 as a dry well.
Testing
No drill stem test was performed.
 
 
- Borekaks i OD
Borekaksprøve, topp dybde [m]
Borekaksprøve, bunn dybde [m]
620.00
1651.00
Borekaks tilgjengelig for prøvetaking?
YES
 
 
- Litostratigrafi
Top depth [m]
Lithostrat. unit
402
402
1083
1291
1291
1297
1304
1319
1319
1360
1422
 
 
- Spleisede logger
Dokument navn
Dokument format
Dokument størrelse [KB]
pdf
0.22
 
 
- Logger
Type logg
Topp dyp for logg [m]
Bunn dyp for logg [m]
MSCT
1227
1637
MWD LWD - DIR
402
460
MWD LWD - DIR DGR EWR PWD
460
1211
MWD LWD - DIR DGR EWR PWD BAT CT
1211
1650
VSP
403
1650
 
 
- 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
30
456.0
36
459.0
0.00
LOT
SURF.COND.
20
610.6
26
612.5
1.40
LOT
INTERM.
9 5/8
1205.0
12 1/4
1212.0
1.74
LOT
OPEN HOLE
1650.0
8 1/2
1650.0
0.00
LOT
 
 
 
- Boreslam
Dybde MD [m]
Egenvekt, slam [g/cm3]
Viskositet, slam [mPa.s]
Flytegrense [Pa]
Type slam
Dato, måling
459
1.38
30.0
 
KCl/Gem
 
496
1.38
33.0
 
KCl/Gem
 
612
1.14
31.0
 
Performadril
 
612
1.32
28.0
 
KCl/Gem
 
628
1.14
32.0
 
Performadril
 
673
1.20
40.0
 
Performadril
 
1110
1.26
40.0
 
PERFORMATROL low sulphate
 
1211
1.26
60.0
 
Performadril
 
1211
1.26
55.0
 
Performadril
 
1343
1.25
64.0
 
PERFORMATROL low sulphate
 
1650
1.25
50.0
 
PERFORMADRIL low sulphate