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NGLs Begin Moving on Cayenne Pipeline in Louisiana

The Cayenne Pipeline, a joint venture between American Midstream Partners LP (AMID) and Targa Resources Corp., has been completed and natural gas liquids (NGL) deliveries have begun, AMID said Wednesday.

Originating from the Venice Gas Processing Plant and delivering to fractionation in southern Louisiana, Cayenne will initially have 40,000 b/d of Y-grade NGL transport capacity, with the ability to expand to more than 50,000 b/d, AMID said.

Cayenne Pipeline LLC acquired the pipeline from High Point Gas Transmission LLC in 2016 and converted it to NGLs from dry natural gas [CP16-474]. The nonjurisdictional work to convert the pipeline included modifying or replacing valves and other appurtenances, as well as the addition of meters and thermal relief devices, HPGT said [CP16-474].

The project begins at the Targa-operating plant near Venice, LA, travels through Plaquemines Parish, LA; passes under the Mississippi River, and continues into St. Bernard Parish to the Toca Gas Processing Plant, which is operated by Enterprise Products Partners LP.

The pipeline is supported by a 15-year dedication for all NGL production from the 750 MMcf/d Venice plant with an inlet from six offshore Gulf of Mexico (GOM) pipelines.

"Cayenne not only benefits offshore producers with a substantial increase in NGL takeaway capacity, but also creates meaningful value to AMID by taking an underutilized pipeline and altering its services into a strategic project," said AMID CEO Lynn Bourdon III.

The opening of Cayenne to NGL transportation "provides AMID with strategic transport capabilities for the majority of all NGL volume out of Gulf of Mexico's deepwater Mississippi Canyon region, where AMID has developed an integrated gathering and transportation network," the company said.

In July, the Houston-based partnership said it was selling its Propane Marketing and Services segment to focus capital in the GOM and onshore in the Permian Basin and East Texas. Proceeds from the sale are to fund investments in AMID's core operating areas, including repaying $32 million borrowed to fund its acquisition in June of the Viosca Knoll system from Genesis Energy LP, the partnership said. Viosca Knoll serves the Main Pass, Mississippi Canyon and Viosca Knoll areas of the deepwater Gulf of Mexico and connects to AMID's High Point and Destin pipelines.

AMID operates midstream infrastructure connecting natural gas, crude oil, NGL, condensate and specialty chemicals to end-use markets. With assets located in the Permian Basin, Eagle Ford Shale, East Texas, the Bakken Shale and the Gulf Coast, AMID operates 4,000 miles of interstate and intrastate pipelines, as well as gas processing plants, fractionation facilities, an offshore semisubmersible floating production system and terminal sites with around 6.7 million bbl of storage capacity.   

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