HOUSTON—Exxon Mobil Corp. said Monday it was cleaning up oil that spilled from a company pipeline in rural Louisiana.

An estimated 1,900 barrels of oil from the North Line crude pipeline were contained in the immediate vicinity of the spill, and there were no injuries reported, Exxon said. Also, air-quality monitoring detected "no danger to the public," although further checks are ongoing, the Irving, Texas, company said. The cleanup started Sunday, using vacuum trucks to collect the oil.

The...