SPAR (platform)

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A SPAR, named for logs used as buoys in shipping and moored in place vertically, is a type of floating oil well platform typically used in very deep waters. Spar production platforms have been developed as an alternative to conventional platforms. ^[1]

A Spar platform consists of a large-diameter, single vertical cylinder supporting a deck. It contains a deep-draft floating caisson, which is a hollow cylindrical structure similar to a very large buoy. Its four major systems are hull, moorings, topsides, and risers. About 90% of the structure is underwater. Historically, spars were used as marker buoys, for gathering oceanographic data, and for oil storage. The spar design is now being used for drilling, production, or both. The distinguishing feature of a spar is its deep-draft hull, which produces very favorable motion characteristics compared to other floating concepts. Water depth capability has been stated by industry as ranging up to 10,000 ft. ^[2]

The first Spar platform in the Gulf of Mexico was installed in September of 1996.^[3]