Donnell expanded Ohio Oil’s reach to include 16 states and Mexico. Donnell established the Illinois Pipeline Corporation, capitalized at $20 million, to operate the pipeline transportation company of Ohio Oil. In 1924, Donnell acquired Lincoln Oil Refining of Illinois. At the time of his death, Donnell had grown the assets of Ohio Oil to $108 million, and Ohio Oil owned or operated under lease 5 million acres of oil and gas producing lands and drilled approximately 42,000 wells.