The Australian share market is expected to open higher after a positive lead from Wall Street.

The SPI200 futures contract was up 9 points, or 0.14 per cent, at 6,555.0 at 0700 AEST, suggesting a small rise for the benchmark S&P/ASX200 on Friday.

Wall Street finished higher, with the Dow Jones Industrial Average up 0.39 per cent, the S&P 500 up 0.41 per cent and the tech-heavy Nasdaq Composite up 0.57 per cent.

Oil prices spiked overnight after mysterious attacks on two tankers in the Gulf of Oman that US Secretary of State Mike Pompeo blamed on Iranian authorities.

The Aussie dollar is buying 69.15 US cents from 69.09 US cents on Thursday.