** U.S.-listed shares of oil and gas producers and servicesproviders fall on Wednesday after crude prices drop 4 pct onrenewed concerns over growing global oil glut
** Brent crude down 4 pct at $46.87/barrel; U.S.crude hits 6-1/2 year lows falling 4.7 pct to $40.63
** Chevron Corp shares down 3 pct at $80.98, ExxonMobil Corp down 2 pct at $76.55, ConocoPhillips down 4.3 pct at $47.38
** Royal Dutch Shell Plc down 2 pct at $54.59, BPPlc down 2 pct at $34.64, Statoil ASA down 4 pctat $15.14
** Oilfield services companies also down: Schlumberger Ltd down 3 pct at $80.60, Halliburton Co down 4.4pct at $39.23, Baker Hughes Inc down 4.4 pct at $54.14
** Contract drillers fall: Seadrill Ltd down 5.4pct at $7.37, Nabors Industries Ltd down 5 pct at$10.32, Rowan Co PlC down 4 pct at $16.48, Ensco Plc down 4 pct at $16.13