Repsol YPF (Spanish national oil company) is a company established in 1999 with the acquisition of YPF by Repsol, which is mainly engaged in oil and gas exploration and development, and petrochemical production in Spain and Argentina. Repsol YPF (Repsol YPF), a Spanish national oil company, was established in 1999 with the acquisition of YPF. In the 2013 World Top 500 ranking, Repsol was ranked 112th.