Strike Energy Ltd. made a new conventional gas discovery in its Walyering-6 appraisal well in the onshore North Perth basin of Western Australia.
The well was drilled to a total depth of 3,551 m with confirmation of 21 m of net gas pay in the B and C sands in the Cattamarra sandstones.
Although of lower quality than Walyering-5’s A and B sand reservoirs, Strike said the B and C sands will provide candidates for the proposed production testing program for Walyering-6.
The well also encountered a 4m net pay section of the secondary target Cadda formation that was gas charged. The interval contained porosities averaging 20% and high permeabilities up to 220 md. Pressures were measured at 3,827 psi.
Strike collected samples of the gas and reservoir fluid to be sent for laboratory testing and compositional analysis. The Cadda reservoir will be included in the Walyering-6 flow test, Strike said.
The company has analyzed Walyering-5 test data and estimated a mid-case of 60 petajoules of gas in place across the A-D sands in the Cattamarra reservoirs.
Cattamarra results at Waylering-6 indicate a different hydrocarbon system and trapping geometry for the western fault block of the field compared to Walyering-5 results in the eastern fault block.
Because of this, each area of the field will be assessed individually and summed to generate a field-wide reserve and resource calculation.
Inclusion of the new Cadda gas discovery is incremental to the company’s expectations for pre-drill estimates of the western fault block.
Flow testing of Waylering-6 is expected to begin in June.
Walyering field lies in permit EP447. Strike is operator with 55% interest. Talon Energy has 45%.