Gulf South Gas Pipeline

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Gulf South Gas Pipeline is an operating natural gas pipeline in the United States.[1]

Location

The pipeline runs between points in Texas, Louisiana, Mississippi, Alabama and Florida.

Project Details

Main Line

  • Operator: Gulf South Gas Pipeline Company, LP
  • Owner: Boardwalk Pipeline Partners[2]
  • Parent company: Loews Corporation
  • Capacity: 2.7 bcf/d
  • Length: 7500 mi[2]
  • Status: Operating
  • Start year: 1997[3]

GS Bastian Bay Extension

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 735 MMcf/d[3]
  • Length: 16 miles / 26 km[3]
  • Diameter: 30 in[3]
  • Status: Operating
  • Start year: 1997[3]
  • Cost: US$21 million[3]

GS Gulfstream Interconnect

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 236 MMcf/d[3]
  • Length: 29 miles / 47 km[3]
  • Diameter: 24, 30 in[3]
  • Status: Operating
  • Start year: 2002[3]
  • Cost: US$21 million[3]

GS Southeast Expansion

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 1,272 MMcf/d[3]
  • Length: 111 miles / 179 km[3]
  • Diameter: 42 in[3]
  • Status: Operating
  • Start year: 2008[3]
  • Cost: US$1,296 million[3]

GS Texas to Mississippi Expansion

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 1,700 MMcf/d[3]
  • Length: 243 miles / 391 km[3]
  • Diameter: 36 inches, 42 inches[3]
  • Status: Operating
  • Start year: 2008[3]

GS Mobile Compressor Expansion

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 250 MMcf/d[3]
  • Length: 0 new miles [3]
  • Diameter:
  • Status: Operating[4]
  • Start year: 2008[3]
  • Cost: US$23 million[3]

GS Gulf Crossing Mississippi Loop

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 1,000 MMcf/d[3]
  • Length: 18 miles / 29 km[3]
  • Diameter: 42 in[3]
  • Status: Operating[4]
  • Start year: 2008[3]
  • Cost: US$25 million[3]

Haynesville/Perryville Expansion

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 556 MMcf/d[3]
  • Length: 0 miles[3]
  • Status: Operating[4]
  • Start year: 2010[3]
  • Cost: US$161 million[3]

Southeast Market Expansion

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 510.5 MMcf/d[3][5]
  • Length: 70.1 miles / 113 km[3]
  • Diameter: 20 inches, 30 inches[3]
  • Status: Operating[4]
  • Start year: 2014[3]
  • Cost: US$287 million[3]

Coastal Bend Header Pipeline

  • Operator: Gulf South Pipeline Company LP[3]
  • Owner: Boardwalk Pipeline Partners
  • Parent Company: Loews Corporation
  • Current capacity: 1.42 billion cubic feet per day[3]
  • Length: 65 miles / 105 km[3]
  • Status: Operating
  • Start Year: 2018[6][3]
  • Cost: $545 million[3]

Westlake Expansion Project

  • Operator: Gulf South Pipeline Company LP[3]
  • Owner: Boardwalk Pipeline Partners
  • Parent Company: Loews Corporation
  • Current capacity: 200 million cubic feet per day[3][7]
  • Length: 0.3 miles / 0.48 km[3]
  • Diameter: 16 inches[3][8]
  • Status: Operating
  • Start Year: 2019[3]
  • Cost: $56 million[3]

Willis Lateral Expansion Project

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation
  • Capacity: 200 MMcf/d[3]
  • Length: 19 miles / 30.6 km[3]
  • Diameter: 24 in[3]
  • Status: Operating[4]
  • Start year: 2020[3]
  • Cost: US$96 million[3]

Index 99 Expansion Project

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[2]
  • Parent company: Loews Corporation[9]
  • Capacity: 500 MMcf/d[3]
  • Length: 35.4 km[3]
  • Diameter: 30 in[3]
  • Status: Operating[3]
  • Start year: 2020[3]

McComb Compressor Station Reliability Project

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation[9]
  • Capacity: 48 MMcf/d[3]
  • Length: 0 mi[3]
  • Status: Operating[3]
  • Start year: 2021[3]

Lamar County Expansion Project

  • Operator: Gulf South Gas Pipeline Company, LP[3]
  • Owner: Boardwalk Pipeline Partners[4]
  • Parent company: Loews Corporation[9]
  • Capacity: 200 MMcf/d[3]
  • Length: 5.5 km[3]
  • Diameter: 20 in[3]
  • Status: Operating [3]
  • Start year: 2022[3]
  • Cost: US$54 million[3]

PLUSS Project

  • Operator: Gulf South Pipeline Company, LLC[3]
  • Owner: Boardwalk Pipeline Partners[10]
  • Parent company: Loews Corporation[9]
  • Capacity: 236 MMcf/d[3]
  • Length: 2 mi[3]
  • Diameter: 30 in[10]
  • Status: Proposed[3]
  • Start year: 2028[10]

Eunice Reliability and Lake Charles Supply Project

  • Operator: Gulf South Pipeline Company, LLC[3]
  • Owner: Boardwalk Pipeline Partners[10]
  • Parent company: Loews Corporation[9]
  • Capacity: 120 MMcf/d[3]
  • Length: 0 mi[3]
  • Status: Proposed[3]
  • Start year: 2027[3]
  • Cost: US$73 million[3]

Kosci Junction Project

  • Operator: Boardwalk Pipeline, LP[3]
  • Owner: Boardwalk Pipeline Partners[10]
  • Parent company: Loews Corporation[9]
  • Capacity: 1500 MMcf/d[3]
  • Length: 110 mi[3]
  • Diameter: 36 in[3]
  • Status: Proposed[3]
  • Start year: 2029[3]

Southeast Compression Utility and Reliability Expansion Project

  • Operator: Boardwalk Pipeline, LP[3]
  • Owner: Boardwalk Pipeline Partners[10]
  • Parent company: Loews Corporation[9]
  • Capacity: 280 MMcf/d[3]
  • Length: 0 mi[3]
  • Status: Proposed[3]
  • Start year:
  • Cost: US$216 million[3]

Background

Main Line

The Gulf South Gas Pipeline is owned and operated by the Gulf South Gas Pipeline Company LP, a subsidiary of Boardwalk Pipeline Partners.[1] Boardwalk Pipeline Partners is owned by Loews Corporation. The pipeline gathers gas from basins in Texas and Alabama and delivers it to the U.S. Northeast, Midwest and Southeast.[1]

Pipeline explosion

In January 2015, a section of the pipeline that goes under the Barnett Reservoir near Brandon, MS, exploded.[11] "I thought it was a tornado coming through, or something, because it got to shaking the house," said one resident. "There was just a loud explosion at first and then the house started shaking." Photographs of the fire caused by the explosion can be seen on local Jackson, Mississippi news.[11]

GS Bastian Bay Extension

The extension is located in Louisiana.[3] The construction of the project was completed in November 1997.[3]

GS Gulfstream Interconnect

This expansion was completed in 2002, adding 29 miles of pipeline and 236 MMcf/d of capacity in Alabama.[3]

GS Southeast Expansion

Boardwalk Pipeline Partners proposed the project in August 2006.[12] The expansion project gives Texas, Oklahoma, Arkansas and Louisiana natural gas supplies greater access to Northeast, Florida and other Southeast markets.[13] The project provides producers in eastern Texas and northern Louisiana a more eastern outlet for a portion of their production from the Barnett Shale, Bossier Sand and other fields that are being delivered in the Perryville, Louisiana area or the central Mississippi area and permit deliveries into the Florida markets via an interconnect with Destin Gas Transmission and into Northeast markets via the interconnect at Transco’s Compressor Station 85.[14] The construction of the project was completed in June 2008.[3]

GS Texas to Mississippi Expansion

In September 2006, Gulf South filed an application before U.S. FERC for authorization to construct and operate the project, which connects Gulf South's existing facilities in Keatchie, DeSoto Parish, Louisiana to Gulf South's pipeline in Simpson County, Mississippi.[15][16] FERC approved the project that provided takeaway capacity for producers in Barnett Shale and Bossier Sands of East Texas in June 2007.[17] The construction of the expansion project was completed in June 2008.[3]

GS Mobile Compressor Expansion

The construction of the project was completed in August 2008.[3]

GS Gulf Crossing Mississippi Loop

The expansion is located in Mississippi. The construction of the project was completed in December 2008.[3][18]

Haynesville/Perryville Expansion

The project consisted of adding compression facilities to the Hall Summit Compressor station, Haynesville, Louisiana and Tallulah Compressor station, Perryville, Louisiana.[19] The construction of the project was completed in October 2010.[3]

Southeast Market Expansion

In August 2012, Gulf South received binding commitments for the project and completed the open season.[20] In August 2013, FERC had prepared the environmental assessment report for the project.[5] The project was completed in October, 2014.[3] The project connects natural gas supplies in northern Louisiana with markets in the southeast US. The project uses both Boardwalk’s Perryville Hub and its Petal gas storage capacity.[20][21] The project added transmission capacity to the Gulf South system from multiple locations in Texas and Louisiana to Mississippi, Alabama and Florida.[22]

Coastal Bend Header Pipeline

In June 2015 Gulf South Pipeline applied to FERC to build the Coastal Bend Header Pipeline in Wharton and Brazoria Counties, TX.[23] Gulf South received FERC approval in Jun 2016,[24] and began construction of the pipeline in April 2017.[25] The project would include seven new interconnects with various interstate and intrastate pipelines, including the Gulf South Pipeline.[23] Gulf South Pipeline estimated the construction costs of the pipeline to be approximately US$690 million.[26]

In May of 2018, the Coastal Bend Header gas pipeline was put into service. The first phase delivered 0.7 billion cubic feet (bcf) of natural gas per day to the Freeport LNG Terminal export facility. The second phase, completed in November of 2018, delivers an additional 0.7 bcf.[27]

Westlake Expansion Project

The project was designed to provide gas for a 994-MW Entergy Louisiana LLC gas-fired, combined-cycle electric generation plant, the Lake Charles Power Station, for an initial term of 20 years.[7] In July 2017, Gulf South filed an application before FERC for authorization to construct and operate the Westlake expansion project.[8] In February 2018, FERC completed the environmental assessment of the project and passed approval for the project.[7] The construction of the project was completed in August 2019.[3]

Willis Lateral Expansion Project

The expansion pipeline was proposed to supply 1 GW worth of energy to the Willis combined Cycle power plant.[3] The pipeline starts in Texas and ends at the Willis combined Cycle power plant in Texas, USA.[3][28]

It began operations on May 31, 2020.[4]

Index 99 Expansion Project

In March 2020, the Federal Energy Regulatory Commission (FERC) authorized construction and operation of Gulf South Pipeline Co.’s proposed Index 99 Expansion project, which would increase natural gas firm transportation to markets along the Gulf Coast. The project would provide 500 million cubic feet per day of natural gas firm transportation service to markets along the Gulf Coast and provide an additional 250 million cubic feet per day of capacity to existing facilities in northern Louisiana. All of the project’s components would be in Texas and Louisiana, which include installing about 22 miles of 30-inch diameter pipeline (Index 99L) in San Augustine and Sabine counties in Texas, installing a pig receiver at the intersection of the new Index 99L pipeline and Gulf South’s existing Index 99 system in San Augustine County, as well as installing 250 feet of 24-inch diameter station pipe and a 24-inch diameter pressure control valve at the Hall Summit compressor station in Bienville Parish, LA.[29] The Index 99 expansion project was commissioned on Aug. 31, 2020.[30]

The expansion will run through San Augustine and Sabine counties in Texas, to Bienville Parish, LA.[29]

McComb Compressor Station Reliability Project

The project involves replacing a compressor station in southern Mississippi, resulting in an increase in transmission capacity.[3]

According to the U.S. Energy Information Administration, construction was completed in March 2021.[3]

Lamar County Expansion Project

The expansion project will add natural gas delivery of up to 200,000 dekatherms per day to the Morrow Repower Project, a new 550 MW combined cycle power plant developed by Cooperative Energy Texas in Mississippi, USA.[31] The Morrow Repower Project is replacing a coal plant.[3]

The Lamar County Expansion Project entailed the construction, operation and maintenance of a gas pipeline, setting up an new delivery meter station, and setting up an new 5,000 hp compressor station called the Black Creek Compressor station.[31]

In June 2020, the US Federal Energy Regulatory Commission (FERC) issued order approving the construction and operation of the project. The project was completed and began operation from December 2021.[32]

PLUSS Project

The Parks Line Upgrade and Sorrento Station Project was announced in 2024. It is a pipeline replacement and compressor station construction project. It includes replacing segments of Gulf South's 30-inch diameter pipeline in St. Martin Parish, Louisiana, and the construction of a new compressor station (Sorrento Compressor Station) in Ascension Parish, Louisiana. It plans to be in service by 2028.[10]

Eunice Reliability and Lake Charles Supply Project

Project is to replace existing reciprocating compressor units in Acadia Parish, LA, and to install over pressure protection at the existing Woodlawn Junction in Jefferson Davis Parish, LA. Project will create 120,000 Dth/d of additional capacity into the Lake Charles area. The environmental assessment was completed in January 2025.[3]

Kosci Junction Project

The Project entails constructing approximately 102 miles of new 36-inch pipe from Attala to Clarke counties, MS, approximately 8 miles of new 36-inch pipe in Humphreys & Sunflower counties, MS. The project also includes the new Kosci Compressor Station in Attala County, MS and the new Holmes Compressor Station in Holmes County, MS, as well as modifications to the company’s existing Greenville Compressor Station in Washington County, MS and Isola Compressor Station in Humphreys County, MS.[3]

Southeast Compression Utility and Reliability Expansion Project

Southeast Compression Utility and Reliability Expansion Project (Project). The Project consists of adding additional compression at three existing compressor stations in Madison Parish, LA, Jasper and Forrest Counties, MS, and construct one new greenfield compressor station in Hinds County.[3]

Articles and resources

References

  1. ↑ 1.0 1.1 1.2 Gulf South Gas Pipeline, Gulf South Pipeline, accessed Aug. 17, 2021.
  2. ↑ 2.0 2.1 2.2 Gulf South Pipeline Company, Gulf South PL, accessed Aug. 27, 2021.
  3. ↑ 3.000 3.001 3.002 3.003 3.004 3.005 3.006 3.007 3.008 3.009 3.010 3.011 3.012 3.013 3.014 3.015 3.016 3.017 3.018 3.019 3.020 3.021 3.022 3.023 3.024 3.025 3.026 3.027 3.028 3.029 3.030 3.031 3.032 3.033 3.034 3.035 3.036 3.037 3.038 3.039 3.040 3.041 3.042 3.043 3.044 3.045 3.046 3.047 3.048 3.049 3.050 3.051 3.052 3.053 3.054 3.055 3.056 3.057 3.058 3.059 3.060 3.061 3.062 3.063 3.064 3.065 3.066 3.067 3.068 3.069 3.070 3.071 3.072 3.073 3.074 3.075 3.076 3.077 3.078 3.079 3.080 3.081 3.082 3.083 3.084 3.085 3.086 3.087 3.088 3.089 3.090 3.091 3.092 3.093 3.094 3.095 3.096 3.097 3.098 3.099 3.100 3.101 3.102 3.103 3.104 3.105 3.106 3.107 3.108 3.109 3.110 3.111 3.112 3.113 3.114 3.115 3.116 3.117 3.118 3.119 "Natural Gas Data - U.S. Energy Information Administration (EIA)". www.eia.gov. Retrieved 2023-08-01.
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 4.13 4.14 4.15 4.16 Willis Lateral Project Timeline Boardwalk Pipelines, accessed Aug. 17, 2021.
  5. ↑ 5.0 5.1 "Federal Register :: Request Access". www.federalregister.gov. Retrieved 2023-09-11.
  6. ↑ Request for Extension of Time to Make Certain Facilities Available for Service, Gulf South Pipeline, May 11, 2018
  7. ↑ 7.0 7.1 7.2 "Gulf South's Westlake gas pipeline expansion passes FERC environmental review". www.spglobal.com. Retrieved 2023-09-11.
  8. ↑ 8.0 8.1 "Federal Register :: Request Access". www.federalregister.gov. Retrieved 2023-09-11.
  9. ↑ 9.0 9.1 9.2 9.3 9.4 9.5 9.6 "Loews Corporation - Investor Relations". loews.com. Retrieved 2025-09-18.
  10. ↑ 10.0 10.1 10.2 10.3 10.4 10.5 10.6 "PLUSS Project". bwpipelines.com. 2024. Retrieved 2025-09-18.{{cite web}}: CS1 maint: url-status (link)
  11. ↑ 11.0 11.1 Gas line explodes, burns near reservoir, WAPT, Jan. 14, 2015, accessed Aug. 17, 2021.
  12. ↑ "Gulf South Has Southeastern Expansion Plans". Natural Gas Intel. 26 April, 2006. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  13. ↑ "Gulf South's Southeast Expansion Enters Service". Natural Gas Intel. 03 June, 2008. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  14. ↑ "FERC Register" (PDF). Gov Info. 11 September, 2006. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  15. ↑ "Federal Register :: Request Access". www.federalregister.gov. Retrieved 2023-09-11.
  16. ↑ "Boardwalk Pipelines, LP: Prospectus". U.S. Securities & Exchange Commission. 16 November, 2006. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  17. ↑ "Gulf South Ready to Start Remainder of East Texas-Mississippi Expansion". Natural Gas Intel. 17 January, 2008. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  18. ↑ "Gulf Crossing's Mississippi Loop Set to Open Dec. 29". Natural Gas Intel. 24 December, 2008. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  19. ↑ "Boardwalk Pipeline Partners: Investor Presentation". U.S. Securities & Exchange Commission. May 2009. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= (help)CS1 maint: url-status (link)
  20. ↑ 20.0 20.1 "Boardwalk's Gulf South Pipeline announces Southeast Market Expansion project". U.S. Securities & Exchange Commission. 19 August, 2012. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  21. ↑ Smith, Christopher E. (20 August, 2023). "Boardwalk advances Southeast Market Expansion gas line project". Oil & Gas Journal. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= and |date= (help)CS1 maint: url-status (link)
  22. ↑ "Boardwalk Pipeline Partners: 2012 Annual report" (PDF). Annual reports. 2012. Retrieved 11 September, 2023. {{cite web}}: Check date values in: |access-date= (help)CS1 maint: url-status (link)
  23. ↑ 23.0 23.1 Gulf South Pipeline Submits Application For Coastal Bend Header Project, Oilman, accessed January 2018
  24. ↑ ORDER ISSUING CERTIFICATE, Docket No. CP15-517-000, FERC, Jun. 20, 2016
  25. ↑ Coastal Bend Header Pipeline and Metering Facilities – Notice to Proceed, Gulf South Pipeline, accessed January 2018
  26. ↑ Barry Cassell, "FERC begins review of $690m Coastal Bend pipeline project of Gulf South", Transmission Hub, Jun. 26, 2015
  27. ↑ Are Boardwalk Pipeline Partners' Days as a Public Company Numbered?, Yahoo Finance, May 5, 2018
  28. ↑ National Energy and Petrochemical Map, FracTracker, Feb. 28, 2020, accessed Aug. 17, 2021.
  29. ↑ 29.0 29.1 David Bradley, FERC Approves Gulf South’s Index 99 Natural Gas Expansion, Natural Gas Intel, Mar. 20, 2020, accessed Aug. 17, 2021.
  30. ↑ INDEX 99 TIMELINE, Boardwalk Pipelines, accessed Aug. 17, 2021.
  31. ↑ 31.0 31.1 https://s2.q4cdn.com/221564406/files/doc_downloads/2019/Vol_I_LamarCountyExpanApp.pdf Accessed on 01 August, 2023
  32. ↑ https://s2.q4cdn.com/221564406/files/doc_downloads/south_pipeline/Lamar/Lamar-County-Expansion-Project-In-Service-Notification.pdf Accessed on 01 August, 2023

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