The move is expected to allow the project to produce its first liquefied natural gas (LNG) in the mid-year of 2014.

The new pipeline will transport natural gas from the Hides Gas conditioning plant to the Omati river, by connecting to the project’s 407-km offshore section of pipeline and then to the LNG plant located near Port Moresby.

The onshore pipeline diameter ranges from 32 inches to 34 inches and during the life of the project, around 250 billion cubic metres of gas is expected to be transported through the pipeline.

ExxonMobil PNG senior project manager Sam Roxburgh said the completion of the onshore pipeline that rises 2,100m above sea level in some areas is an important milestone for the PNG LNG project as preparations continue for LNG production this year.

"This is yet another exciting milestone for the PNG LNG Project and a great achievement for ExxonMobil PNG Limited, pipeline contractor Spiecapag, and, most importantly, for the people of Papua New Guinea," Roxburgh added.