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   Open Blocks: LA SKHIRA


 

GEOGRAPHICAL SETTING

Eastern offshore Tunisia.

ACREAGE

3820 km². 

PREVIOUS EXPLORATION

 About 1670 km of seismic have been shot and four  wells have been drilled.

GEOLOGICAL SETTING

The Skhira Block lies within the western Gulf of Gabes which acted during the Early Mesozoic as a subsident zone, in the eastern continuation of the Chott Fejaj Basin. Since the Cretaceous, the area evolved as a shallow marine carbonate - evaporite platform and was affected by northwest - southeast faulting system, with associated horsts and unconformities.

HYDROCARBON POTENTIAL

Reservoirs :
The primary and well sealed reservoirs are the Cenomanian Zebbag carbonates and especially the Jurassic Nara dolomites and limestones. The Triassic sandstones may be an additional target.

Source Rocks :
The Jurassic Middle Nara organic rich shales are considered as the main source rock in the area. Deeper Triassic and/or Paleozoic source beds may also provide additional sourcing.

Traps :
Faulted blocks and anticlines are the main trap types.

SEISMIC

DATE
SURVEY
OPERATOR
SOURCE
NB OF KM
FIELD CONTRACTOR
1970
10, 34
TOTAL

FLEXOTIR

460
CGG
1984
CWG-84
CONOCO
Airgun
450
GSI
1985
CWG-85
CONOCO
Airgun
500 Prakla
1990

NWG-90

NAFTAPLIN
Airgun
260 SPLIT
2003
MEL03
PETROCANADA
Airgun
   

DRILLING

DATE
WELL NAME
OPERATOR
TD (m)
age at TD
SHOWS
1975
KTE-1
MARATHON
4192
Triassic
 
1991 CHEMS-1 CONOCO 3065

Jurassic

 
1991 WGA-1 INA NAFTAPLIN 3574
Triassic
 

2005

AMI-1

PETROCANADA

3511

Late Jurassic