Attendance at the 2011 Offshore Technology Conference (OTC) reached a 29-year high of 78,150, up eight per cent from last year, as offshore energy industry experts from around the world came together at the worlds largest event for offshore resources development. OTC was held on 2-5 May at Reliant Park in HoustonAttendance at the 2011 Offshore Technology Conference (OTC) reached a 29-year high of 78,150, up eight per cent from last year, as offshore energy industry experts from around the world came together at the worlds largest event for offshore resources development. OTC was held on 2-5 May at Reliant Park in Houston