The permits, EP435 and L16, are located in the Exmouth sub-basin in the north of the state and surround the Rough Range oilfield.
Australia-listed Black Fire Minerals said on Wednesday it had reached agreement with Empire to dispose of its 10% stake in the blocks, which were now considered non-core assets to the minerals-focused company.
Empire, which originally held a 53% interest in the permits, was said to have purchased Black Fire’s interests for a total of A$21,000 (US$19,099).
