Eight US petroleum liquids pipeline projects have been completed since the start of 2025, and operators have announced another 14, according to the US Energy Information Administration's 2026 release of its Liquids Pipeline Projects Database, published August 26, 2026.

The completed projects span natural gas liquids, crude oil, and refined products, and concentrate heavily on Texas and the Permian-linked Delaware and Midland basins. The EIA database tracks more than 280 past, ongoing, and future liquids pipeline projects in the United States, dating back to 2010.

Which projects reached completion between January 2025 and June 2026?

Bahia Pipeline. Enterprise's 550-mile, 600,000-b/d NGL pipeline originates in West Texas, gathering from the Delaware and Midland basins, and connects to Enterprise's fractionation complex in Chambers County, Texas. It is the largest single project in the completed set.

Coastal Bend NGL Pipeline Expansion 1 (the former EPIC Y-grade pipeline). EPIC expanded the line by 50,000 b/d, lifting total capacity to 225,000 b/d. The pipeline carries Y-grade from West Texas to Corpus Christi.

Hiland Express Project. Kinder Morgan converted the Double H Pipeline system from crude oil service to NGL.

MPLX–BANGL Expansion 1. The expansion raised total pipeline capacity to 250,000 b/d on the Y-grade line linking the Delaware and Midland basins to a fractionator in Sweeny, Texas.

Santa Fe Pacific East Line Expansion 1. Kinder Morgan expanded the El Paso, Texas-to-Tucson, Arizona line to move additional volumes of gasoline, diesel, and jet fuel.

Santa Ynez Pipeline System. Sable Offshore Corporation, through Pacific Pipeline Company, restarted the existing-but-idle 901 and 903 pipelines offshore California.

Seahawk Pipeline—Thunderdome Lateral, Gray Oak Louise. The operator converted an existing 16-inch natural gas pipeline to crude oil service, running from the Gray Oak Louise terminal to the Edna terminal, with ultimate deliveries to the Seahawk terminal, all in Texas.

Seminole Red Pipeline (Midland-to-Echo 2). Enterprise converted the Seminole Red back to NGL service — the line was originally an NGL pipeline before an earlier conversion to crude — while it built the Bahia pipeline.

What has been newly announced?

The 14 newly announced projects in the database are:

• Bahia Pipeline Expansion
• Bayou Bridge Pipeline Expansion
• Bridger Pipeline Expansion
• Coastal Bend NGL Pipeline Expansion 2
• Enbridge Mainline Optimization Phase 1
• Enbridge Mainline Optimization Phase 2
• Flanagan South Pipeline Expansion
• Puget Sound Pipeline Optimization
• Santa Fe Pacific Pipeline East Line Expansion 2
• Southern Illinois Connector
• Sun Belt Connector
• Western Gateway Pipeline
• Western Markets Pipeline Expansion Phase 1
• Western Markets Pipeline Expansion Phase 2

The pattern is notable: several announced projects are follow-on phases to lines that have just entered service or been expanded, including Bahia, Coastal Bend, and the Santa Fe Pacific East Line.

How should readers treat the capacity numbers?

The EIA cautions against summing project capacities. Some projects connect to each other, with certain pipelines doubling as segments of longer lines carrying the same fuels to final destinations. Adding capacities together would overestimate or double-count pipeline capacity.

The agency also flags the limits of the data. "The data reflect reported plans and are not reported to us under any mandatory survey," the EIA said. "The data do not reflect our assumptions on the likelihood or timing of project completion."

The database compiles project types, start dates, capacity, mileage, geographic information, and status from pipeline company websites, trade press reports, and government documents such as US Department of State permits for border crossings. It covers expanded, reversed, converted, and new-build projects carrying crude oil, hydrocarbon gas liquids, and refined products including gasoline, diesel, and jet fuel. It complements the EIA's separate Natural Gas Pipeline Projects tracker.

For Rig & Refinery readers, the watch items are clear: whether the announced Bahia and Coastal Bend expansion phases — now at announcement stage, not sanctioned — progress to firm timelines, and how quickly the restarted California offshore lines and the converted Texas crude laterals ramp to nameplate throughput.