The Bouhajla North prospect (BHN-1) is located on the
Bouhajla Permit in onshore Central Tunisia. The prospect is a geological
analogue of the Sidi el Kilani (SLK ) oil field 25km to the East. Evidence gathered
so far by DualEx Energy (DXE.v) and Africa Hydrocarbons (NFK.v) from drilling
and log data overwhelmingly points to a positive outcome after completion and
testing operations. Have a look:
While the non-fractured Abiod section on BHN-1 has low
permeability, several zones of enhanced permeability due to apparent natural
fractures were interpreted from the logs and confirmed expectations based on 3D
seismic interpretation of the Bouhajla North structure.
After shooting and studying seismic data, the companies had estimated
210m of highly fractured Abiod. Upon drilling, they encountered 245m of the
reservoir with elevated hydrocarbon saturations throughout the Abiod. Elevated
C1-C4 gas chromatograph readings coincided with fracture intervals and drill
cuttings provided evidence of micro-fractures.
The Abiod is a fractured chalk, locally dolomitized in
association with wrench tectonics. These types of reservoirs are associated
with very high individual productivity rates. SLK-3, which encountered 130m of
prospective Abiod formation, tested at 7,000 bopd. SLK-4 tested at 8,600 stb/d
on a 1½"choke and has gone on to produce half of the entire production
from Sidi el Kilani. With management keen to employ a similar completion
protocol as was successfully practiced at Sidi el Kilani, the omens are looking
good.
As has been previously demonstrated by the Sidi el Kilani oil field, trucking is a very viable option in getting the oil to market. Prior
to 1999 when the dedicated pipeline to La Skhirra was commissioned, trucking
was the means of transportation used. The oil trucked during that period
represents 60% of the entire production to date from Sidi el Kilani. At the
field, road tankers were used to haul oil to the pipeline terminal and tank
farms at Sidi el Itayem.
Direct trucking to the export terminal at La Skhirra, over
100km away, was also practiced. The distances involved were much greater than
the 25km oil would need to be trucked from Bouhajla North to the Sidi el Kilani
pipeline. The short distance ensures that not only can more barrels be trucked,
but more importantly, a significant reduction in cost.
If BHN-1 is a success, the reservoir will be penetrated more
times in order to optimise the draining of the structure. Capacity should not
be a problem as the pipeline at Sidi el Kilani is currently underutilized and
has ample capacity available in the region of 20,000 barrels.
And with much larger Abiod prospects - Bouhajla South East
(359 Million Barrels Best Estimate) and Bouhajla Northeast (591 Million Barrels
Best Estimate) – still on the cards, a pipeline would certainly come in handy.
ALL THE BEST.
Bouhajla North
Fact Sheet
·
BHN-1 is located in the Pelagian Basin which is
a proven basin with multiple discoveries.
·
Source rock is not a risk in the Pelagian Basin
as it possesses multiple proven source rocks.
·
The naturally fractured Abiod is well a known
reservoir in the region. Over 245m of highly fractured Upper Abiod section was
penetrated in the recent drilling.
·
The El Haria shale located above the Abiod is
regionally present and provides an excellent seal. It was confirmed by
drilling.
·
The defined structure is well constrained by 2D
and 3D seismic with good E-W closure with apparent N-W closure as well.
·
3D confirmed previous 2D structural
interpretation of Bouhajla’s status as an analogue of Sidi el Kilani. The Bouhajla
structure proved to be similar in size and shape to the 50 Million barrel oil
field located 25km to the East.
·
Production at Sidi el Kilani comes almost
exclusively from micro-fractures.
·
Several interpreted fracture intervals were
observed over a 245 metre thick Abiod section at BHN-1.
·
Elevated C1-C4 gas chromatograph readings along
with evidence of micro- fractures observed in drill cuttings coincide with the
potential fracture intervals.
·
Pulse Neutron Log data suggests the Abiod is
hydrocarbon saturated throughout the section with no water contact and has
intersected a number of fracture intervals. RST log interpretation indicative
of light hydrocarbons.
·
Management is targeting up to 10,000 barrels of
oil per day of light sweet 42° API crude on the first well (BHN-1) with only 4
wells needed to drain the entire structure.
·
There is ample capacity for discoveries at the
Sidi el Kilani pipeline 25km away.
·
Monetisation of the asset expected to be quick
and cost effective with trucking of the oil initially, followed by a tie in to
the pipeline at Sidi el Kilani.