Transco Applies For Gulf Connector Expansion Project

Map Courtesy Of Williams

Transcontinental Gas Pipe Line Co. (Transco), a wholly-owned subsidiary of Williams Partners LP, has filed an application with the US Federal Energy Regulatory Commission (FERC) to construct and operate its Gulf Connector Expansion Project, a two-phase expansion of Transco’s interstate natural gas transmission system in Texas and Louisiana, USA.

If approved, the project will enable Transco to provide 475,000 dt/day of incremental, year-round, firm transportation service from Transco’s Station 65 Zone 3 Pool in St. Helena Parish, Louisiana, southward along its mainline, to new delivery points in Transco’s Zones 1 and 2. Phase 1 will provide 75,000 dt/day by a target in-service date of September 1, 2018, and Phase 2 will provide an additional 400,000 dt/day by a target in-service date of January 1, 2019.

As proposed, the Gulf Connector Expansion Project includes construction of three new compressor stations, an interconnection with Cheniere Corpus Christi Pipeline’s Cheniere Corpus Christi Pipeline, and piping and valve modifications at two existing Transco compressor stations to allow for bi-directional gas flow.

In order to create the southbound capacity under the project, Transco will undertake the following construction activities and facility modifications:

Phase 1 – Target In-Service Date of September 1, 2018

  • A new compressor station, consisting of one 1250 hp (935 kW) electric motor-driven unit, to be located in Wharton County, Texas
  • Piping and valve modifications at existing Compressor Station 40 in Hardin County, Texas, to allow for bi-directional compression
  • Related appurtenant underground and aboveground facilities

Phase 2 – Target In-Service Date of January 1, 2019

  • A new 7800 hp (5818 kW) compressor station, consisting of one Solar Taurus 60 gas turbine driven compressor unit, to be located in San Patricio County, Texas (Compressor Station 17)
  • A new 21,600 hp (16,133 kW) compressor station, consisting of two 10,800 hp (8056 kW) Solar Taurus 70 gas turbine-driven compressor units, allowing for bi-directional compression, to be located in Victoria County, Texas (Compressor Station 23)
  • A 500,000 dt/day interconnection with Cheniere Pipeline to be located adjacent to the new Compressor Station 17 in San Patricio County, Texas
  • Piping and valve modifications at existing Compressor Station 30 in Wharton County, Texas, to allow for bi-directional compression.
  • Related appurtenant underground and aboveground facilities

Transco estimates that the project facilities will cost approximately US$167.4 million.