Page 20 - AsianOil Annual Review 2021

AsianOil SEPTEMBER AsianOil

Warrego upbeat over

neighbouring WA gas discovery

The developer has hailed a new gas discovery in a neighbouring
Perth Basin block as having positive implications for its own assets

OCEANIA AUSTRALIAN independent Warrego Energy
has revealed that its analysis of another firm’s
WHAT: natural gas discovery in the Perth Basin has bol-
Warrego believes a gas stered the prospects of its own assets.
discovery in Mineral The developer said on September 29 that
Resources’ EP368 Mineral Resources and Norwest Energy’s
bolsters the potential Lockyer Deep-1 discovery, which is located in
of its own exploration EP368, expanded the basin’s “sweet spot”.
targets. Mineral Resources said on September 8 that
initial interpretation of the Lockyer Deep-1
WHY: well’s logging data had identified a significant
The developer’s analysis gas-bearing reservoir in the primary objective
suggests that other Kingia Sandstone. Norwest then said in a Sep-
blocks’ gas first migrated tember 22 update that petrophysical analysis of
through EP469. wireline data from the well had confirmed Kin-
gia’s “exceptional reservoir quality”.
WHAT NEXT: Warrego, for its part, believes the EP368 dis-
Warrego expects to covery could have positive implications for mul-
conduct a new 3D seismic tiple exploration targets within its neighbouring
survey at EP469 this EP469 licence. Image: Mineral Resources
financial year.
Discovery details of an up to 800-metre gas column down to a free
Norwest confirmed in September a 34-metre water line at a depth of around 4,500 metres.
gross pay interval at the top of the Kingia Sand- The company said it regarded this result as
stone, between 3,888 metres and 3,922 metres, “remarkable, as it confirms the fault-seal integ-
without gas-water contact. The interval con- rity of the structure’s main bounding faults,
tains a 20.2-metre net gas pay, based on an 8% regardless of orientation and despite a very sig-
porosity cut-off, that is predominantly within the nificant gas column.”
upper section. It noted that the figures substantially
Norwest described the net pay zone is being upgraded the additional prospectivity identified
of “exceptional quality”, noting that it had an within EP368 and the adjacent EP426. Mineral
average porosity of 16% and average permea- Resources operates both blocks with an 80%
bility estimated at 500 millidarcies. It added that interest, while Norwest owns the remaining
a well-defined gas gradient had been measured 20%.
through the pay interval, indicating the presence Norwest managing director Iain Smith said:
“The upper Kingia pay interval is arguably the
highest quality reservoir encountered thus far
within the deep Permian gas play of the north
Perth Basin, and this fact combined with an
inferred significant gas column gives us good
reason to believe that the structure hosts gas
resources that are greater than our pre-drill High
Case prospective resource.”
He added: “Such an outcome happens only
very rarely in our industry, and we now look for-
ward to production testing of what we expect to
be a very high deliverability reservoir.”
The EP368 joint venture’s success has some
profound implications for nearby exploration

P20 www. NEWSBASE .com Annual Review 2021