In 1998, Oluwaseyi trained at Industrial Control Services in Houston, Texas on "Safety Shutdown System"; and "Development of Analytical Competence for Managing Operations" at Lagos Business School (now Pan-Atlantic University)in 1999. In 2000, he had training in automation. In 2002, he studied Fundamentals of Crude Sampling at Jiskoot Auto Control Training Centre, Kent, England. Also, in 2005, he studied Understanding and Solving Difficult Business Problems at Massachusetts Institute of Technology (MIT), USA.