Pre-front-end engineering and design is expected to be finished within three months.
According Kumul the proposed Western Pipeline would provide transportation for aggregated oil and gas from Western and Gulf provinces.
The project, which is so far on budget, has finalised routes for the pipelines following a workshop in China last month.
The pipeline routes have been selected to minimise the construction risk.
"While the project engineering and design development schedule was fast-tracked since completion of the concept and definition study, and has created national interest since its announcement in Sydney at the 14th PNG Mining and Petroleum conference last December," program manager Jason Pollock said in a statement.
"It is a credit to both the Kumul Petroleum project team for their commitment, and our engineering contractors for their experience and innovative solutions.
"After a series of engineering and constructability risk evaluations and a very thorough commercial analysis together with our project partners the project team has now finalised both pipeline routes.
"The project remains on schedule and on budget."
The hope is that a pipeline into the west will not only re-energise the exploration activity in Western and offshore and onshore Gulf and Southern Highlands provinces, but will create new industries.
Kumul is aiming to help develop graduate level engineers with the project.
Its plan is to run a pipeline west from fields such as P'ynang and Stanley-Elevala via Kopi to Port Mores1by's Caution Bay allowing the aggregation of multiple fields, and supporting their development.
Kumul's option is being supported by Horizon Oil and Sinopec, who own around 66% of the discovered gas in the Western province, however Horizon is also examining of a mid-scale Western LNG project from the forelands south to feed an expandable 1.5-2MMtpa LNG plant on Daru Island, which could open up early opportunities for condensate recovery from fields such as Stanley.
There are also options for supplying gas to local cities and mining project power demand in PNG and East Indonesia, and LNG into Singapore, Horizon said.