- General information
Wellbore name
7228/1-1
Type
EXPLORATION
Purpose
WILDCAT
Status
P&A
Press release
Factmaps in new window
Main area
BARENTS SEA
Well name
7228/1-1
Seismic location
Survey BG0804.inline 1949 & xline 2736
Drilled in production licence
Drilling operator
Norwegian Energy Company ASA
Drill permit
1397-L
Drilling facility
Drilling days
29
Entered date
29.03.2012
Completed date
26.04.2012
Release date
15.03.2013
Publication date
15.03.2013
Purpose - planned
WILDCAT
Reentry
NO
Content
DRY
Discovery wellbore
NO
Kelly bushing elevation [m]
40.0
Water depth [m]
351.0
Total depth (MD) [m RKB]
1714.0
Final vertical depth (TVD) [m RKB]
1711.5
Maximum inclination [°]
7.9
Oldest penetrated age
MIDDLE TRIASSIC
Oldest penetrated formation
KOBBE FM
Geodetic datum
ED50
NS degrees
72° 51' 0.92'' N
EW degrees
28° 18' 55.19'' E
NS UTM [m]
8084472.59
EW UTM [m]
543289.80
UTM zone
35
NPDID wellbore
6820
 
 
- Wellbore history
General
Well 7228/1-1 was drilled on the Eik Prospect in the Barents Sea on the eastern border of the Bjarmeland Platform. The Eik prospect is a salt-induced structure located close to the northern part of the Nyslepp Fault Complex, which separates the Bjarmeland Platform from the Nordkapp Basin. The main target was the Early Jurassic - Late Triassic sandstones contained in the Kapp Toscana Group. Secondary Targets were Late Triassic Intra-Snadd Formation sandstone and sandstones in the Middle Triassic Kobbe Formation.
Operations and results
Wildcat well 7228/1-1 was spudded with the semi-submersible installation Transocean Barents on 29 March 2012 and drilled to TD at 1714 m in the Middle Triassic Kobbe Formation. No significant problem was encountered in the operations. The well was drilled with seawater and hi-vis pills down to 755 m and with Glydril mud from 755 m to TD.
Good quality reservoir sandstones were found in the Kapp Toscana Group (Nordmela, Tubåen, and Fruholmen formations); 100 m net reservoir in total. The Intra Snadd sand secondary target had 32 m of net reservoir with very good porosities. Only poor reservoir intervals were found within the Kobbe Formation, with low net to gross values and low porosities. None of the reservoir intervals were hydrocarbon-bearing. Weak Shows were reported from cuttings evaluation over Tubåen and Fruholmen sands from 976 m to 1092 m. The shows were described as fair spotty yellow direct fluorescence, very slow dull blue white fluorescence cut, no visible cut and fair dull blue white residual ring. No shows were observed below Fruholmen Formation. No bottom hole temperature at final TD is given on the fact pages, due to no reliable downhole temperature obtained.
No cores were cut. A dry case wire line logging program was performed. No wire line fluid samples were taken.
The well was permanently abandoned on 26 April 2012 as a dry well.
Testing
No drill stem test was performed.
 
 
- Cuttings at the NPD
Cutting sample, top depth [m]
Cutting samples, bottom depth [m]
765.00
1714.00
Cuttings available for sampling?
YES
 
 
- Lithostratigraphy
 
 
- Geochemical information
Document name
Document format
Document size [KB]
txt
0.00
txt
0.02
 
 
- Logs
Log type
Log top depth [m]
Log bottom depth [m]
MWD - DIR INC
392
459
MWD - GR RES SON DEN NEU
459
1714
PEX HRLA MSIP XPT
840
1713
PEX MSIP PPC GPIT EDTC
742
887
VSI
490
1690
 
 
- Casing and leak-off tests
Casing type
Casing diam.
[inch]
Casing depth
[m]
Hole diam.
[inch]
Hole depth
[m]
LOT mud eqv.
[g/cm3]
Formation test type
CONDUCTOR
30
455.0
36
459.0
0.00
LOT
SURF.COND.
13 3/8
749.0
17 1/2
755.0
0.00
LOT
PILOT HOLE
755.0
9 7/8
755.0
0.00
LOT
INTERM.
9 5/8
884.0
12 1/4
889.0
1.45
LOT
OPEN HOLE
1714.0
8 1/2
1714.0
1.64
LOT
 
 
 
- Drilling mud
Depth MD [m]
Mud weight [g/cm3]
Visc. [mPa.s]
Yield point [Pa]
Mud type
Date measured
400
1.02
21.0
 
SW/Bentonite Sweeps
 
450
1.02
20.0
 
SW/Bentonite Sweeeps
 
458
1.39
20.0
 
Bentonite
 
755
1.24
23.0
 
Glydril
 
788
1.24
18.0
 
Glydril
 
889
1.24
19.0
 
Glydril
 
1185
1.29
19.0
 
Glydril
 
1591
1.29
20.0
 
Glydril
 
1714
1.29
19.0
 
Glydril