US midstream company Energy Transfer Partners (ETP) could convert its 70,000 b/d Mariner East 1 pipeline to refined products service once system expansions are fully in place next year.
The original Mariner East pipeline from Marcellus shale fractionators to the export docks near Philadelphia at Marcus Hook, Pennsylvania, carries fractionated NGLs. But once the 275,000 b/d Mariner East 2 and its subsequent twin, the 250,000 b/d Mariner East 2X, are installed, ETP said the lines could be reassigned.
One example the company gave was pushing refined products from the midcontinent onto the smaller Mariner East line, adding more competition for Philadelphia-area refiners already concerned about the reversal of Buckeye's Laurel pipeline across Pennsylvania.
Mariner East 2 remains on schedule for completion by the end of June after construction resumed earlier this month following a suspension by state regulators. The state Department of Environmental Protection fined ETP $12.6mn for violations and established a more stringent compliance review process.
Mariner East 2X is slated for completion in mid-2019.
ETP's expansion of its Revolution rich gas pipeline in western Pennsylvania is complete and will feed ethane into Mariner East 2 when it is finished. It will also send natural gas residue to connect with ETP's Rover gas line, which is due on line in the second quarter.