I had the pleasure of working with Obiz on a short course on tight gas reservoirs. I found Hasan (of Obiz) , who managed the delivery of the course, one of the most professional and competent persons in the petroleum industry. I have 25 years of experience, during which period I have come across thousands of professionals and I am pleased to say, Hasan Akber  (of Obiz) sticks out as the one I would recommend the most for professional training and business management.