WmsAssetMap_gulfcoastprofile

Gulf of Mexico Operations

Gulf of Mexico Operations

Williams is a leader when it comes to gathering and processing natural gas. The services we provide help bring supplies of natural gas into the marketplace for the nation’s energy needs. Our major Gulf Coast facilities are located onshore and offshore, from North Padre Island, Texas to Mobile, Ala.

Williams holds most of its onshore and offshore Gulf of Mexico assets through its significant ownership interest in Williams Partners L.P. (NYSE:WPZ).

During severe weather events in the Gulf of Mexico, Williams will provide status updates on its onshore/offshore assets on this page.

Banjo is a 56-mile offshore gathering system that collects oil from the Nansen and Boomvang Fields. Total capacity is 70,000 barrels per day. The name Banjo is an acronym for the Boomvang And Nansen Joint Oil System.

A 60-mile gas gathering pipeline from Williams’ Devils Tower to the Bass Lite Field in Atwater Valley Block 426 was completed in first-quarter 2008 and began receiving first production the same quarter. The pipelines were installed in water depths of more than 6,000-feet.

Black Marlin is a 16-inch natural gas gathering system originating offshore at High Island 136, transporting natural gas into the Texas City, Texas area. The Black Marlin facility in Texas City separates the condensate from the gas and stores this material in bulk storage tanks until it is transferred to tank trucks. The pipeline-quality natural gas is delivered to local industry in the Texas City area. The facility throughput capacity is 228 MMcfd.

Williams recently installed two deepwater export pipeline laterals in more than 5,000 feet of water in the Gulf of Mexico for the Blind Faith project. Williams extended its Canyon Chief gas gathering system and Mountaineer crude oil pipeline by 37 miles each to transport oil and gas production from the Blind Faith Field. The Blind Faith discovery is located in approximately 7,000 feet of water at Mississippi Canyon blocks 695 and 696.

A 98.5-mile natural gas gathering pipeline connecting Williams’ Devils Tower platform and the Blind Faith natural gas lateral to MP 261A on the continental shelf where connection is made to Williams’ Transco pipeline. The natural gas from this system is primarily delivered to Williams’ Mobile Bay gas processing plant in Coden, Ala. The system parallels the Mountaineer oil pipeline for the half of the route.

Canyon Station is a fixed-leg platform in 300 feet of water in East Main Pass Block 261, approximately 60 miles south of Mobile, Ala. It is designed to treat, process and handle up to 500 million cubic feet of natural gas per day.

The Devils Tower spar is a floating production system located in 5,610 feet of water at Mississippi Canyon Block 773, approximately 150 miles southwest of Mobile, Ala. The facility is owned by Williams, operated by ENI, and capable of producing 60,000 barrels of oil per day and 60 million cubic feet of natural gas per day.

The Discovery system consists of a 105-mile, 30-inch diameter mainline pipe and 168 miles of gathering laterals. The system has a design capacity of 600 million cubic feet of natural gas per day.

Other Discovery facilities:

  • The Paradis, La., facility fractionates 42,000 barrels per day of natural gasliquids. It is located about 25 miles west of New Orleans.
  • The Larose, La., facility processes 600 million cubic feet of natural gas per day. It is located 35 miles south of New Orleans.
  • The Tahiti Lateral, a 16-inch gas gathering export pipeline, began flowing in May 2009. The lateral begins at the Tahiti spar located in Green Canyon 641 and terminates at a subsea connection located near the Frontrunner spar in Green Canyon 294. The 33-mile pipeline was installed in water depths of 2,700 to 3,800 feet.

Galveston A244 is a shallow-water junction platform that supports oil and gas production from the Boomvang, Nansen and Gunnison fields. Three of Williams’ offshore pipelines are connected to this facility.

The Geismar, La., olefins production plant is located south of Baton Rouge. It can produce up to 1.35 billion pounds of ethylene per year. Williams operates the plant and has an 83-percent ownership interest.

The 96-mile, 18-inch diameter Gunnison pipeline delivers oil from Garden Banks Block 668 to Williams’ shallow-water platform at Galveston A244. Capacity is approximately 84,000 barrels per day.

Our Houston office is home to Transco and our Gulf of Mexico deepwater services group. Approximately 600 people work at this office. Williams has had a major presence in Houston since 1995.

Part of the Discovery system, the Larose, La., facility processes 600 million cubic feet of natural gas per day. It is located 35 miles south of New Orleans.

The Markham complex has three facilities. The first one is a separation and dehydrating plant that removes water and condensate from natural gas. The other two facilities are cryogenic natural gas processing plants that can process a total of 500 million cubic feet per day.

The Mobile Bay natural gas processing plant is located in Coden, Ala. Total processing capacity is almost 700 million cubic feet per day.

The 117-mile Mountaineer oil pipeline is a combination of 18- and 20-inch-diameter pipe. It delivers oil from the Devils Tower spar to a third-party (Empire) terminal near Venice, La.

Mustang Island is a 50-mile gathering system located on- and offshore near Corpus Christi. It consists of 12, 16 and 20-inch diameter pipe, delivering natural gas to a third-party pipeline. Capacity is 200 million cubic feet per day.

North Padre Island is a 40-mile offshore gathering system that delivers natural gas into Williams’ Transco intrastate pipeline. It consists of 10, 16 and 20-inch diameter pipe. Capacity is 200 million cubic feet per day.

Part of the Discovery system, the Paradis, La., facility fractionates 42,000 barrels per day of natural gas liquids. It is located about 25 miles west of New Orleans.

The Perdido Norte project began start-up of operations late in first-quarter 2010. The project includes a 200 million cubic feet per day (MMcfd) expansion of the onshore Markham gas processing facility and a total of 184 miles of deepwater oil and gas gathering lines.

Seahawk is a 114-mile offshore gathering system that collects natural gas from the Nansen and Boomvang fields. Total capacity is 360 million cubic feet per day.

Part of the Discovery system, Tahiti Lateral, a 16-inch gas gathering export pipeline, began flowing in May 2009. The lateral begins at the Tahiti spar located in Green Canyon 641 and terminates at a subsea connection located near the Frontrunner spar in Green Canyon 294. The 33-mile pipeline was installed in water depths of 2,700 to 3,800 feet.

The 10,500-mile Transco pipeline system transports natural gas from the Gulf Coast to northeastern and southeastern states. Total delivery capacity is approximately 8.4 million dekatherms.