Woodside Petroleum Ltd subsidiary ATS Inc has made good on a promise not to extend its $1.16 billion takeover bid for US-based oil producer Energy Partners Ltd, after failing to reach the minimum acquisition level of 50 per cent.

Woodside Petroleum Ltd subsidiary ATS Inc has made good on a promise not to extend its $1.16 billion takeover bid for US-based oil producer Energy Partners Ltd, after failing to reach the minimum acquisition level of 50 per cent.