Qatar Petroleum is eying new horizons as it increases the scope of its massive LNG expansion. With near-term prices weakening, the prospect of even more Qatari gas hitting the market in the mid-2020s may deter FID on rival projects.

Qatar has thrown down the gauntlet to rival LNG producers, announcing this week that it is again boosting its already-massive LNG expansion plans. A further two LNG trains have been added to the plans, and Qatar Petroleum now plans to bring capacity up to 126mn...