DT Midstream expanding Haynesville, Marcellus natural gas pipeline systems
DT Midstream Inc. (DTM) has reached final investment decision (FID) on Phase 4 expansion of its Louisiana Energy Access (LEAP) natural gas pipeline system, which will expand its capacity to 2.1-bcfd by first-half 2026. LEAP’s current capacity is 1.9 bcfd.
The expansion will use incremental compression and looping and is underpinned by what DTM described as “long-term demand-based contracts with two new customers.” DTM emphasized the system’s role in delivering Haynesville shale production to US Gulf Coast LNG plants in announcing Phase 4 FID.
DTM is also expanding a project connecting its Stonewall gas gathering lateral pipeline to EQT Corp.’s 2-bcfd Mountain Valley Pipeline, serving the Marcellus and Utica shales. The expansion, anchored by a long-term agreement with a large privately held producer, will increase Stonewall’s capacity by 100 MMcfd and is expected in service first-half 2026.
Stonewall is a 68-mile high-pressure gathering system with 1.5-bcfd capacity. It is a joint venture of DTM (85%) and Antero Midstream Corp. (15%).
About the Author
Christopher E. Smith
Editor in Chief
Chris joined Oil & Gas Journal in 2005 as Pipeline Editor, having already worked for more than a decade in a variety of oil and gas industry analysis and reporting roles. He became editor-in-chief in 2019 and head of content in 2025.