Don't forget that President Obama is friendly to the Saudi royals. The Saudi Arabian regime is strictly opposed to the Iranians and consequently their Russian allies. Both Iran and Russia have ignored Obama. He may want revenge, so he and the Saudis have a mutual interest. Plus an added bonus: declining energy prices hurt the economies of the Oil Patch, an area very hostile to the administration.
Saudi production has not dramatically increased. The U.S.’ has - no thanks to Obama.