But Road to Oman Rankings leader Ricardo Gouveia and Englishman Max Orrin – who won on this course last year – are in close pursuit in the European Challenge Tour’s season finale.
Hansen made six birdies in the Omani sunshine as he built on his opening round of 66 to move up into fourth position in the projected Road to Oman Rankings, having started the week in 17th spot - just outside the top 15 who will win European Tour cards at the end of this week.
The Dane played on The European Tour for the last two seasons after graduating from the Challenge Tour in 2012 and is happy with his form as he hunts a maiden victory at Muscat’s Almouj Golf, The Wave.
Behind the leading pair is Orrin, who took victory when the Challenge Tour visited Oman 12 months ago and who needs a good finish to climb into the top 15 this week.
The 21-year-old’s round of 66 was the lowest of the day and leaves him on eight under par overall, in third place on his own, at the midway point.
Huddersfield's Chris Hanson is on 143 after following his first round 70 with a 73.