NEW YORK ( TheStreet) -- OGX Petroleo e Gas Participacoes ( OGXPY), Bankers Petroleum ( BNKJF) and Precision Drilling ( PDS) were the top movers, while Vestas Wind Systems ( VWDRY), First Solar ( FSLR) and Cobalt International Energy ( CIE) lost substantial ground last week.OGX Petroleo e Gas Participacoes was the top gainer for the week, up 9.9%. Bankers Petroleum rose 8.4% on record Q1 production numbers. The company's sales from its Albanian Patos-Marinza oilfield averaged around 11,900 barrels per day during the quarter, up 14% over fourth-quarter sales of 10,424 barrels per day. Banker's average production for Q1 was 12,147 barrels per day, while inventory was 168,000 barrels on March 31. The other big grosser last week was Precision Drilling, gaining 8.3%. WorleyParsons ( WYGPY), PTT Exploration & Production PCL ( PEXNY), PTT PCL ( PUTRF), Tatneft ( OAOFY) and MOL Hungarian Oil and Gas ( MGYOY), rose 7.8%, 6.7%, 6.1%, 6.1% and 5.2%, respectively. Murphy Oil ( MUR) surged 4.4% after the company announced its intention to sell its U.S. retail business in 2011. According to UBS, the sale could provide a $5 per share boost to valuation. Other prominent winners were Sasol ( SSL) and Energy XXI Bermuda ( EXXI), up 4.2% and 4.1%, respectively. Statoil ( STO) rose 3.9% last week after U.S. regulators issued the company its second permit for drilling in the deep waters of the Gulf of Mexico. According to the Bureau of Ocean Energy Management, Regulation and Enforcement, the work site is about 219 miles offshore, south of Houma, Louisiana. Another topper was Nabors Industries ( NBR) soaring 3.9% after Macquarie upgraded the stock to outperform from neutral. The brokerage firm raised the price target to $37 per share from $25. Other movers were Pengrowth Energy ( PGH), China Petroleum & Chemical ( SNP) and China Oilfield Services ( CHOLY), advancing 3.7%, 3.7% and 3.6%, respectively. Suncor Energy ( SU) gained 3% after the company received a U.S. Patent for bituminous froth inline steam injection processing on March 29. YPF ( YPF) rose 3% after Moody's upgraded the company's Baa1 rating to stable from negative. Berry Petroleum ( BRY), Petroleum Geo-Services ( PGSVY), Technip ( TKPPY), Canadian Oil Sands ( COSWF) and Linc Energy ( LNCCY) advanced around 2.9%, 2.8%, 2.8%, 2.5% and 2.5%, respectively. The biggest loser was Vestas Wind Systems, down 8.5% after UBS added the stock to its least favored list during the week. Besides, JP Morgan maintained caution on the stock. First Solar ( FSLR) erased 8.2% last week. According to Bloomberg, the construction plan of a 120-megawatt solar panel factory in Blanquefort by First Solar and French company EDF Energies Nouvelles will remain on hold, until government tenders for solar projects are disclosed.