Earlier this year, troubled Canadian oil and gas producer Talisman Energy (TSX: TLM)(NYSE: TLM) completed the sale of 75% of its Montney assets to Malaysia's Petronas for $1.5 billion. This sale was completed as part of its strategic turnaround aimed at unlocking further value for shareholders through the sale of non-core and marginal assets. Talisman also confirmed plans to divest a further $2 billion of assets over the next 12 to 18 months, which will see further oil and gas assets placed up for sale.