MTLP Shenzi

The Shenzi standalone tension leg platform can produce as much as 100,000 barrels of oil per day, along with 50 million cubic feet of gas. Designed for use in the deepwater Gulf of Mexico, the Modec International Moses Class platform has an 8,6840-ton topside deck and a hull that weighs 12,493 tons. Also, the structure has four pontoons. Large tendons connect the structure using oil states connectors that extend 4,300 to secure the entire structure to the sea floor.

Located in Green Canyon Block 653, the facility is about 120 miles off the coast of Louisiana. It is the second deepest platform of its kind in the world. The primary operator is BHP Billiton Petroleum, with a joint interest by Repsol and Hess Corporation. The platform’s topside structures were built by Kiewit Offshore, at a facility in Ingleside, Texas. Samsung built the hull in South Korea, while Heerema assembled and transported (in dry tow) the structure.

Shenzi TLP can support up to 20 subsea production and water injection wells. Its payload capacity is 14,061 tons. The facility is capable of producing as many as 100,000 barrels of oil per day and 50 million cubic feet of gas daily. It is connected to major oil pipelines in the region by an 83-mile long pipeline under the Gulf of Mexico, which can transport as much as 230,000 barrels of oil per day. This pipe system connects the Poseidon Oil Pipeline and the Cameron Highway Oil Pipeline. Natural gas is sent to the Cleopatra trunk lines and collected at Ship Shoal 332. The Shenzi Oil Pipeline delivers oil to the junction platform Ship Shoal 332B.

The platform was installed in 2008 and production began in 2009, after the Shenzi Oil and Gas Field was discovered in 2002. It is designed to harness the hydrocarbon reserves in lower Miocene-aged reservoirs under the Gulf of Mexico seabed.

Shenzi Tension Leg Platform Accidents

In November 2009, an arc flash injured a worker who was looking into why electrical power was lost in the quarters building. The flash originated from a 480-volt breaker panel. As a result, the worker sustained first degree burns to his face and neck. An accident report determined the probable cause was a buildup of water in the circuit breaker, which affected the insulation and created an electrical short in the system. A close cable gland connection was listed as a contributing factor. This allowed water to get inside the junction box and eventually to the breaker enclosure. The injured electrician was treated onboard the facility in consultation with an onshore doctor and later transferred by helicopter to a medical facility, upon his request, in Morgan City, Louisiana.

This incident is an example of how defects in small, but important components can lead to serious injuries aboard offshore oil platforms in the Gulf or anywhere else.

If you were injured while on the job, working at the MTLP Shenzi platform, fill out our online form to receive more information about options and eligibility for compensation.

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