- Generell informasjon
Brønnbane navn
6608/10-10
Type
EXPLORATION
Formål
WILDCAT
Status
P&A
Pressemelding
Faktakart i nytt vindu
Hovedområde
NORWEGIAN SEA
Brønn navn
6608/10-10
Seismisk lokalisering
ST0103- inline 1070 & crossline 2281
Boret i utvinningstillatelse
Boreoperatør
Statoil ASA (old)
Boretillatelse
1047-L
Boreinnretning
Bore dager
22
Borestart
17.07.2003
Boreslutt
07.08.2003
Frigitt dato
07.08.2005
Publiseringsdato
21.12.2007
Opprinnelig formål
WILDCAT
Gjenåpnet
NO
Innhold
DRY
Funnbrønnbane
NO
Avstand, boredekk - midlere havflate [m]
24.0
Vanndybde ved midlere havflate [m]
374.0
Totalt målt dybde (MD) [m RKB]
2800.0
Totalt vertikalt dybde (TVD) [m RKB]
2800.0
Maks inklinasjon [°]
3.5
Eldste penetrerte alder
EARLY JURASSIC
Eldste penetrerte formasjon
ÅRE FM
Geodetisk datum
ED50
NS grader
66° 4' 17.9'' N
ØV grader
8° 10' 11.4'' E
NS UTM [m]
7328329.75
ØV UTM [m]
462426.27
UTM sone
32
NPDID for brønnbanen
4699
 
 
- Brønnhistorie
General
Well 6608/10-10 is located on the Dønna Terrace offshore Mid Norway in the south central part of the block. It was drilled to test the Gråspett structure, which consists of two rotated fault blocks north of the Norne and Stær Fields. The primary objective was to prove hydrocarbons in the Middle and Early Jurassic sandstones of the Not and Åre Formations. Secondary objective was to prove hydrocarbons in the Late Jurassic sandstones of the Melke Formation.
Operations and results
Wildcat well 6608/10-10 was spudded with the semi-submersible installation Stena Don on 17 July 2003 and drilled to TD at 2800 m in the Early Jurassic Åre Formation. The well was drilled with sea water and hi-vis pills down to 1377 m and with KCl/Pac/glycol mud from 1377 m to TD. Severe hole problems with tight spots and repeated fall-out of large quantities of cavings were experienced in the bottom 12 1/4" section of the well. The KCl content in the mud used in 6608/10-10 represents the largest concentrations compared to the previous nearby wells. It is believed that this KCl content caused the instability in the Brygge, Tare and Tang Formations. Due to these hole problems the reservoirs were not logged with wire line logs.
Three sandstone beds in the Melke Formation were penetrated and proven to be water wet. The sandstones in the Fangst and Båt Groups were also water wet. No hydrocarbons were proven in the well.
No cores were cut and no wire line fluid samples were taken.
The well was permanently abandoned on 7 August 2003 as a dry well.
Testing
No drill stem test was performed.
 
 
- Borekaks i OD
Borekaksprøve, topp dybde [m]
Borekaksprøve, bunn dybde [m]
1390.00
2800.00
Borekaks tilgjengelig for prøvetaking?
YES
 
 
- Litostratigrafi
 
 
- Logger
Type logg
Topp dyp for logg [m]
Bunn dyp for logg [m]
FMI DSI PEX-LITE HNGS ERCD
374
1701
MWD - MPR
445
2800
 
 
- 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
445.0
36
445.0
0.00
LOT
SURF.COND.
13 3/8
1377.0
17 1/2
1377.0
1.55
LOT
OPEN HOLE
2800.0
12 1/4
2800.0
0.00
LOT
 
 
 
- Boreslam
Dybde MD [m]
Egenvekt, slam [g/cm3]
Viskositet, slam [mPa.s]
Flytegrense [Pa]
Type slam
Dato, måling
1382
1.39
20.0
 
GLYDRIL 74
 
1870
1.41
19.0
 
GLYDRIL 74