Mr Botten, speaking at the PNG biannual mining and investment conference in Sydney yesterday, told the 1350 delegates at the event that although PNG was a challenging place with risks, there were huge opportunities if a company "got it right".
He said the country was in "unprecedented" boom times, with a stable fiscal regime compared with the likes of Australia and Britain , a situation which had aided investment decisions in the region.
The experienced PNG operator said although the country was enjoying a resources boom, he also had experienced the difficult years in the region.
"It is nice to live in the sun for a little while but it is important we don't forget the bad times," he said. Oil Search is PNG's largest oil and gas producer and operates all of the country's producing oil and gas fields.
Mr Botten said that 20 years ago it had been almost impossible to get funding to support a PNG project because of the level of risk applied to the country, but this was no longer the case thanks to the political stability.
PNG Prime Minister Peter O'Neill opened the conference yesterday, saying in his address that the country was working on improving its infrastructure and stamping out corruption, which would make it a more attractive place to do business.