Page 6 - OGA-Sept-2015
P. 6
THIS MONTH
OIL & GAS AUSTRALIA

Transerv Energy starts drilling key test wells

The Enerdrill Rig in action, currently drilling Warro 5. Image courtesy Transerv.

TRANSERV Energy has spudded the first location of Warro 5 and the well will penetrate cubic feet recoverable if appropriate reservoir
of two wells as part of a two-well drilling the reservoir section in the substantial portion stimulation is successfully carried out.
program aimed at unlocking the potential of the field that the 3D shows is devoid of deep-
value in the onshore Warro gas field, seated faulting. Warro 5 and Warro 6 are aimed at
Western Australia. demonstrating the ability of wells in the Warro
Transerv said an independent study by a field to flow gas at commercial rates and avoid
Drilled by the Enerdrill rig 3, the Warro 5 US-based team of tight gas experts found this the issues associated with excessive water in
well is expected to take 28 days to reach the deep-seated faulting was likely to be the source Warro 3 and Warro 4.
planned total depth of 4,250 metres. of the water encountered in the Warro 3 and
Warro 4 wells. Alcoa of Australia are funding the drilling
In the August announcement, Transerv said of Warro 5 and Warro 6, and at no cost to
the well was at 1,599 metres and running a 13 The study indicated that Warro contains a Transerv.
3/8 inch casing. substantial volume of gas with the potential to
flow at high rates, the company said. Under this agreement, Alco can earn up to
Upon reaching total depth, the well will a 65 per cent interest in the field by spending
be cased from surface to total depth and Transerv said wells may be capable of $100 million.
suspended at the end of drilling operations. delivering between 4 billion and 10 billion
cubic feet of gas each with existing water To date, Alcoa has invested approximately
Transerv will then drill Warro 6 before results and more if the water can be reduced or $50 million and the wells are expected to cost a
undertaking reservoir stimulation and testing avoided by drilling away from the faults. further $30 million to $40 million, depending
of both wells. on results, Transerv said.
In addition, the study confirmed an in-place
Warro 3D seismic data was used to select the gas resource of between 8 trillion to 10 trillion Located 200 kilometres north of Perth, the
cubic feet with potentially 3 trillion to 4 trillion Warro field is 30 kilometres from the DBNG
and Parmelia pipelines. l
Quadrant drills duster off WA
which are believed to have generated oil.
NO HYDROCARBONS were found at the plugged and abandoned, wrapping up the “The joint venture will use the new well
Levitt 1 exploration well drilled by Quadrant current exploration drilling program over the
Energy, the successor organisation to permit. and 3D seismic data to progress the evaluation
Apache Energy, in the Carnarvon basin, of areas both in proximity, as well as to the
project partner Karoon Gas has announced. Karoon managing director Robert Hosking north and east of Levitt‐1 where prospectivity
said the dry hole was disappointing, but he remains attractive in the Wigmore sub basin,”
Drilled on exploration permit WA 482 P, the believed the permit still had potential. Karoon said.
well reached its final total depth of 4,929 metres
in early August “To the north and east in the Wigmore Sub‐ “With this, the joint venture will have new
Basin new 3D seismic shows the presence of well data and 3D seismic over the bulk of the
Karoon said petrophysical analysis of logging many structures and a thicker Jurassic source permit area.”
while drilling data at the site indicated the good interval than seen in offset wells,” he said.
quality reservoir of the Legendre and North The company added it would also delineate
Rankin formations was water bearing at this “I remain very enthusiastic about the and rank remaining prospects on the field
location. exploration potential in this permit.” over the next 12 months as it sought to identify
the most prospective locations for following
A wireline logging program is now The 1.3 million hectare WA 482 P permit drilling programs. l
underway at the well site, ahead of it being boasts multiple geological play types in varying
locations and depths across the permit, Karoon
said, including areas in the north and east

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