Congratulations to Nina Mandala on Becoming OGAP Certified! Posted on April 19, 2019April 19, 2019 by Oil & Gas Admins International O&GA International sends a sincere congratulations to Nina Mandala of Shell in Houston, TX for completing the OGAP Certification! To learn how to become Oil & Gas Administrative Professional Certified (OGAP), please click here >>. Share this:FacebookLinkedInTwitterWhatsAppPrint Related