Bloomberg China’s offshore oil and gas experts are dipping their toes in wind power, bringing their experience working on the ocean floor and adding a new twist to their portfolios. Cnooc Ltd., the country’s top offshore oil explorer, said it wants to use its expertise in marine geology to replicate its success in the offshore wind sector. The company entered …

Bloomberg America’s gasoline producers can run, but they can’t hide from a plunge in refining profit margins that sanctions against Venezuelan crude would only worsen, analysts said. The biggest US refiners are expected to report strong fourth-quarter earnings thanks to profits from diesel processing in a strong US economy, as well as a drop of about 40 percent in crude …

Bloomberg Heavy Canadian crude isn’t getting any cheaper — but that hasn’t stopped companies from splurging on costly rail shipments. Rail-car loadings hit a record 356,000 barrels a day in the week ended Jan. 11, up from a daily average of 296,000 barrels in December, according to Genscape Inc., which monitors some of the larger crude-by-rail terminals in Western Canada. …