He said ExxonMobil wanted to work together towards a single, focused goal which is to improve the standard of living and create lasting opportunities for PNG.
"We should be working towards understanding each other's drivers and working towards solutions that are balanced win-win," he said.
He said ExxonMobil and its partners, including Oil Search and Santos, had committed to PNG LNG during the GFC and had successfully managed to execute one of the most technically challenging projects in the world.
"Remote areas, rugged terrain and record-setting weather are just some of the challenges that we faced," he said.
"But one thing stands out for me above all else - an engineering feat of massive proportions - that of the 700km long main gas pipeline from Hides which descends to the coast over 2700m from the mountains."
Since being switched on, PNG LNG had consistently over-performed.
"Since production began we have safely shipped over 250 cargoes of LNG to our customers in the Asia Pacific. We are on track to deliver over 7.9MMT in 2016," he said.
"We also know that our facilities have the capacity to produce over 8MMtpa, an increase of almost 16% from the original design specification.
"The benefits of increased production are wide ranging and include additional revenues for the government of Papua New Guinea, landowners and provincial governments. "
Barry said ExxonMobbil was working to invest in the nation in the long term, employing around 80% of its workforce locally and building a 25MW power plant to Port Moresby.
Construction of a new 50MW power plant outside Port Moresby is also planned to begin in early 2017.
The new plant will add enough power generation capacity to supply 40% of Port Moresby's peak demand.
"Our success is reliant on the continued growth of Papua New Guinean people, businesses and communities. Without their support, PNG LNG and ExxonMobil's plans for expansion would simply not be possible," Barry said.