Wall Street JournalSasol Boosts Cost Savings as Oil Price Hits ProfitWall Street JournalJOHANNESBURG—South African petrochemical and energy major Sasol Ltd. reported a deep drop in net profit for the six months ended Dec. 31, in line with expectations amid …

Wall Street JournalOil Stocks Hit Two-Year High in Europe HubWall Street JournalLONDON—The amount of crude stored at the world's largest oil-trading hub has hit a two-year high, according to data released on Monday, in another sign that the world has a …

Wall Street JournalOPEC-US Oil Tussle Takes Toll on NigeriaWall Street JournalLONDON—The escalating duel surrounding U.S. and OPEC oil production has ensnared Nigeria's energy sector, highlighting a challenge for the petroleum cartel ahead of its meeti …

Wall Street JournalNigerian Oil Hurt by Tussle Between OPEC and USWall Street JournalOnce a highly desired, easy-to-refine product, Nigeria's oil is now hard to sell. In 2014 it fetched more than $2 a barrel more than the global benchmark, Brent crude, …