A movement overseas would mark a dramatic shift for the Oklahoma City-based company, the US' second biggest gas producer after ExxonMobil.

Though former chief executive Aubrey McClendon had at one point toyed with the idea of expanding internationally, by 2011 he ruled out the possibility.

New chief executive Doug Lawler, who was in charge of international deep-water operations at Anadarko Petroleum before taking the helm at Chesapeake, has had his hands full in his first year on the job trying to get the company's finances in order.

However,