FINUCANE SOUTH-1A WELL DRILLING UPDATE
Tap Oil Limited (“Tap”) provides the following update on the Finucane South-1A exploration well, offshore Carnarvon Basin, Western Australia.
Location/Proposed Depth
The Finucane South-1 and 1A wells are located in permit WA-191-P, in the northern end of the Carnarvon Basin. The well location is latitude 19° 18` 17.927¨ S and longitude 116° 45` 31.697¨ E.
Progress
During the period from 0600 hours WST on 4 May 2011 to 0600 hours WST on 11 May 2011, Finucane South-1 drilled to 1,273m MDRT when the drillstring parted. The decision was made to skid the rig 50m and commence the Finucane South-1A well.
Finucane South-1A was spudded at 2315 hours WST on 8 May 2011. The well is currently drilling ahead in 17½” hole (445mm) at 684m MDRT.
Forward Plan
The well will be drilled to the intermediate 133/8” casing depth at approximately 2,036m MDRT.
Finucane South-1A is planned to take approximately 20-25 days from spud to reach a final total depth of approximately 3,500m. Upon completion of evaluation the well will be plugged and abandoned in the normal course of offshore operations.
Background
The Finucane South prospect is located at the northern end of the Carnarvon Basin, approximately 15km east of the Mutineer facility. Finucane South-1A is being drilled to identify additional resources to supplement the discovered resources contained in the adjacent Fletcher Field. Tap estimates the Finucane South prospect has a potential gross mean recoverable oil volume of 8 million barrels.
Finucane South is a moderate-sized structural closure mapped at the base of the Cretaceous regional seal. The underlying Late Jurassic Angel Formation primary target will be intersected at approximately 2,960m below sea level. Water depth at the well location is approximately 140m. Finucane South-1A is being drilled 2km SSW of the Finucane-1 well (1978) which intersected oil shows at the top of the Angel Formation despite having been drilled off structure.
Based on Finucane South-1A’s proximity to other wells in the area (notably Finucane-1 and the Fletcher oil wells) plus its coverage by reprocessed 3D seismic, the risk attached to drilling can be categorised as low-moderate.
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