Jack St. Malo

The Jack/St. Malo, a production rig that is floating and semi-submersible, is a major hub for 43 subsea wells. These include wells and other equipment located on the seafloor, and which are tied back to the structure.  Located at a depth of 7,000 feet, the rig is capable of producing 170,000 barrels per oil/day and has a natural gas production capacity of 42 million cubic feet per day. The topside structures weigh 33,000 tons.

Operated by Chevron, the Jack and St. Malo fields lie about 280 miles south of New Orleans, Louisiana, and channel resources from over 19,500 feet under the sea bed. It is served by a crude oil export pipeline owned and operated by Shell. According to Chevron, the complete project infrastructure stretches about the width of Rhode Island, while the floating production facility displaces an equivalent of water to 357 fully loaded 747 airplanes.

History

Reserves in the Jack oil field were discovered in 2004. The field is located at Walker Ridge Blocks 758/759. Both the first and second wells were drilled by the Discoverer Deep Seas drillship. The second was the deepest ever production tested test well at 28,175 feet, which broke other world records for equipment pressure and duration.

The St. Malo field was discovered in 2003, on Walker Ridge Blog 678, where a discovery well was drilled in 6,900 feet of water to a depth of 29,066 feet. Following both discoveries, a total of $7.5 billion was invested in a project consisting of a production hub, to which three subsea centers are tied back to.

Steel fabrication for the structure began in 2011. Built in South Korea, the hull arrived in Corpus Christi, Texas, in May 2013, and the topside facilities, built in Ingleside, Texas, were set onto the hull in May. The first oil produced at Jack/St. Malo was in December 2014, after hundreds of contractors and suppliers were involved in its development and construction, including Schlumberger, Halliburton, Aker Solutions Inc., JDR Cable Systems Ltd, Danos, Heerema Marine Contractors, OneSubsea, and others. The project is expected to last 30 years and recover over 500 million oil-equivalent barrels.

A Project of Scale and Safety

A remote facility, Jack/St. Malo is highly focused on safety. Chevron has boasted that over 1,000 employees and contractors were evacuated during Hurricane Katrina across the Gulf of Mexico. On its newest facility, it maintains computerized crew manifests to keep track of who is working on the rig, which also has the technology to track storms, so the latest information is available in case of an emergency.

Still, there are numerous hazards onboard oil platforms. Transportation to and from well sites is one of the biggest hazards, in terms of accident rates. There is also the issue of fatigue, as workers tend to work long hours, but heat stress is a factor as well. Employees are urged to take rests in shaded areas and begin work early in the day when temperatures are cooler. Falls, equipment failures, electrocutions, fires, and explosions are risks faced every day as well.

If you sustained an injury while working at the Jack/St. Malo platform, fill out our online form to receive more information.

Jack St. Malo
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