LONDON, Nov 26 - U.S. oil and gas producers are unlikely

to radically increase production under president-elect Donald

Trump as companies remain focused on capital discipline, a

senior executive at Exxon Mobil ( XOM ) said on Tuesday.

"We're not going to see anybody in 'drill, baby, drill'

mode," Liam Mallon, head of Exxon's upstream division, told the

Energy Intelligence Forum conference in London.

"A radical change (in production) is unlikely because the

vast majority is focused on economics of what they're doing."