BUZZ-Oil and gas producers, services providers: Oil prices rise 7 pct

** U.S (Other OTC: UBGXF - news) .-listed shares of oil and gas producers and services providers rise on Thursday after oil prices rise as much as 7.6 pct, helped by a rally in equity markets and an unexpected fall in U.S. crude inventories

** Brent up at $46.32 a barrel by 11.10 a.m ET, having hit an intraday high of $46.40; U.S. crude up 7.3 pct $41.43 a barrel

** Biggest gainers include: Basic Energy Services Inc (NYSE: BAS - news) up 16 pct at $3.99, Midstates Petroleum Company Inc (NYSE: MPO - news) up 20 pct at $2.16, Whiting Petroleum Corp (NYSE: WLL - news) up 14.5 pct at $2.53, Seventy Seven Energy Inc (NYSE: SSE - news) up 15.2 pct at $2.54, Linn Energy LLC up 19 pct at $2.52

** Big players rise: Royal Dutch Shell Plc (Xetra: R6C1.DE - news) shares up 4 pct at $51.50, Total SA (Paris: FR0000120271 - news) up 5.8 pct at $45.12, BP Plc up 5 pct at $32.67, Exxon Mobil (Swiss: XOM.SW - news) up 2.5 pct at $74.31, Chevron Corp up 5.3 pct at $76.94, Petrobras up 10.4 pct at $5.61, ConocoPhillips (NYSE: COP - news) up 6.4 pct at $46.18

** Oilfield services companies also up: Schlumberger Ltd up 4 pct at $72.95, Halliburton Co up 7.8 pct at $37.12, Baker Hughes Inc up 6.8 pct at $52.58, National-Oilwell Varco Inc up 5.7 at $41.29

** Contract drillers rise: Transocean Ltd (NYSE: RIG - news) up 6 pct at $12.30, Helmerich & Payne Inc (NYSE: HP - news) up 6 pct at $54.61, Nabors Industries Ltd (NYSE: NBR - news) up 11 pct at $10.67, Rowan Co Plc up 6 pct at $16.36, Ensco Plc (NYSE: ESV - news) up6 pct at $16.37