Central Petroleum (ASX: CTP) holds an extensive package of prospective acreage of over 270,000 km2 in central Australia, which is predominately in the Pedirka Basin, along with 25,000 km2 in the Southern Georgina Basin.
Apart from conventional gas potential, the company has had independent estimates of over 10,000 trillion cubic feet in UCG "syngas" prospective recoverable resources.
Central Petroleum prioritises Amadeus Basin oil targets
Central Petroleum (ASX: CTP) has decided to change its planned 2010 drilling programme to enable the company to prioritise its pursuit of oil targets in the Amadeus Basin and maximise the opportunity of short term cash flows, rather than the longer term and more capital intensive Helium/gas targets.
Central maintains its belief in the fundamental prospectivity of the 800 BCFG (“high” estimate UGIIP) and 15 BCF helium (“high” estimate UGIIP) Magee 2 well.
However, it has resolved to place priority on the evaluation of oil targets, and as a result, the deeper Magee 2 well targeting the Heavitree and Arumbera Sandstones is not to be drilled in the 2010 drilling campaign and will be deferred to a later campaign.
The current inability of Oil and Gas Exploration Ltd (previously He Nuclear Ltd) (OGE) to pay 50% of the funding needed for the Magee 2 drilling programme has also contributed to the decision.
OGE owes approximately $1 million in unpaid cash calls for both the Magee and the Mt Kitty joint ventures but has ceded its voting and pre-emptive rights to Central for a period of five years.
OGE is obligated to pay up all outstanding amounts prior to the spudding of the Magee 2 or any substitute well chosen or it will lose its current 50% participating interest in the joint venture over the Magee prospect block.
Central is constructing a drill pad at the Surprise 1 oil well location. It is approximately 8 km down dip in a trough to the south of the Johnstone West-1 well. This will give Central the flexibility to drill Surprise 1 at short notice if Johnstone West-1 is a successful well.
Central believes that the prognosed Horn Valley Siltstone and various shales and tight gas/oil sands in the Stairway Sandstone Formation in both the Johnstone and Surprise prospects are favourably located. They have potential for maturation and thickening, and possibly represent unconventional objectives, in addition to the conventional oil/gas reservoir objectives.
The Surprise prospect is estimated to host up to 50 MMbbls oil at “high” UOIIP and 5 MMbbls oil fully risked mean UOIIP in conventional reservoirs and the location in the middle of the prognosed oil “kitchen” to the south of the Johnstone structure is highly regarded.
Central has previously announced considerable potential for the exploration and possible development of aerially extensive shales for gas and oil in its extensive holdings in the Amadeus Basin and the Georgina Basin.
The cumulative areas of the Horn Valley Siltstone in the Amadeus Basin and the Arthur Creek Shale in the Southern Georgina Basin cover over 40,000 km2 within Central’s holdings and are thought to host up to 100 TCFG in UGIIP and have multi-billion barrel UOIIP potential.
To capitalise on this opportunity, Central has appointed David Warner (Adelaide), Advanced Well Technologies (Perth), RPS Scotia (Dallas) and MBA Petroleum Consultants (Brisbane) to conduct in depth studies of shale gas, shale oil, tight gas sands and tight oil sands development potential in these areas.
Any promising shale units will be cored at Johnstone West-1 and if drilled, Surprise-1 will gain fresh data that will be fed into the shale gas/oil study already under way.
