WhiteWater Midstream will expand the capacity of its planned 2.5-bcfd Eiger Express natural gas pipeline to 3.7 bcfd having secured sufficient firm transportation agreements to do so. Increasing the pipeline’s OD to 48 in. from 42-in. and adding incremental compression will bring about the expansion.
Eiger Express will transport gas from the Permian basin to a hub near Katy, Tex., just west of Houston, following the right of way established by the 2.5-bcfd Matterhorn pipeline, which began commercial operations in October 2024. WhiteWater announced the 450-mile Eiger Express in late August 2025 and expects to place it in service mid-2028.
The pipeline is owned by a joint venture among the Matterhorn jv (70%), ONEOK Inc. (15%), and MPLX LP (15%). The Matterhorn jv is owned by WhiteWater (65%), ONEOK (15%), MPLX (10%), and Enbridge Inc. (10%).
Earlier in August 2025, Enbridge and its partners in the planned bidirectional 36-in. OD Traverse pipeline, connecting the Katy hub the Agua Dulce hub in South Texas, increased its capacity to 2.5 bcfd from 1.75 bcfd. Traverse is owned by the Blackcomb pipeline jv: WPC (70%), Targa Resources Corp. (17.5%), and MPLX (12.5%). The WPC jv is owned by WhiteWater (50.6%), MPLX (30.4%), and Enbridge (19%).
