Vintage Energy Ltd., Adelaide, confirmed the viability of Vali gas field in permit ATP 2021 in the Cooper basin of Southwest Queensland with success in the Vali-3 appraisal.
Taking into consideration initial exploration well Vali-1 ST1, the recent Vali-2 appraisal, and the gas discovery in the nearby Odin prospect, the wells have delivered the necessary gas fields and volumes for Vintage to move forward with commercializing the Southern Flank province in the basin, said Neil Gibbins, managing director.
A bonus from Vali-2 and Vali-3 is the increase in reservoir quality sand and resultant net pay in the Permian-age Patchawarra formation compared to the discovery well, he continued.
Analysis of wireline logging data estimates a total of 165 m of conventional and lower deliverability net gas pay within the Patchawarra in Vali-3 made up of 101 m of conventional net gas pay with a porosity equal to or greater than 8% plus 64 m of lower deliverability net gas pay with porosities from 6-8%.
In addition, 13 m of conventional and lower deliverability net gas pay was identified in the deeper Tirrawarra sandstone.
Gas found in the Epsilon and Toolachee formations has yet to be quantified.
All data from the successful wells will be sent to ERC Equipoise Pty Ltd. for an update of the reserves certification for Vali field. The new certification is expected before end September.
In the meantime, discussions are advanced with a number of interested parties regarding pre-sales of gas and potential flow-line infrastructure funding to connect Vali field to the Moomba gas gathering network, the company said.
Vintage is operator of ATP 2021 with 50% interest. Metgasco Ltd. and Bridgeport Cooper Basin Pty Ltd. each have 25%.
