** Shares of some U.S.-focused oilfield service (OFS) firms
edge lower, tracking fall in natural gas prices
** U.S. natural gas futures NGc1 plunge 8.9% on forecasts
for less cold weather and lower heating demand next week than
previously expected, and a growing belief that Freeport LNG's
Texas liquefied natural gas (LNG) export plant will not restart
until March or later
** Liberty Oilfield Services Inc LBRT.N , Nextier Oilfield
Solutions Inc NEX.N , Propetro Holding Corp PUMP.N and
Patterson-UTI Energy Inc PTEN.O down between 2.1% and 4.1%
** LBRT also says there could be a pullback in pressure
pumping market in the U.S. in response to lower natural gas
prices
(Reporting by Sourasis Bose in Bengaluru)
((Sourasis.bose@thomsonreuters.com))