Despite projected gains from the Permian Basin and Haynesville Shale, overall natural gas production from seven key U.S. onshore regions is set to decline from April to May, according to updated figures released Monday by the U.S. Energy Information Administration (EIA).

Total output from the seven regions — the Anadarko, Appalachia and Permian basins, as well as the Bakken, Eagle Ford, Haynesville shales and Niobrara formation — is expected to fall by 149 MMcf/d month/month to 82.783 Bcf/d in May, EIA said in its latest Drilling Productivity Report (DPR).

That would include rising output from the Haynesville (up an estimated 104 MMcf/d from April to May) and the Permian (up 61 MMcf/d), with declines expected from the Anadarko (down 124 MMcf/d), Appalachia (down 65 MMcf/d),...