Oildex is a software company that provides cloud-based financial automation and oil and gas accounting software solutions. The company was founded in 1999 and is headquartered in Denver, Colorado. Oildex's software solutions are used by over 1,100 companies in the oil and gas industry to automate their financial processes and improve their operational efficiency. The company's products include digital and automated invoicing, royalty and owner relations, and production and revenue accounting. Oildex was acquired by Drillinginfo in 2018.