A High-Pressure Swivel for Natural Gas Service and Oscillating Motion in a Marine Environment

[+] Author and Article Information
J. T. Herbert

Corporate Engineering, Aeroquip Corporation, Jackson, Mich.

J. E. Ortloff

Offshore Systems Division, Exxon Production Research Co., Houston, Tex. 77001

J. Energy Resour. Technol 104(3), 229-234 (Sep 01, 1982) (6 pages) doi:10.1115/1.3230408 History: Received October 23, 1980; Revised March 16, 1982; Online October 22, 2009


A joint development program has produced a unique flowline swivel for high-pressure natural gas service under continuous, small degree rotation, oscillating service. The swivel uses an elastomeric bearing element made up of alternate, frusto-conical shaped rings of metal and rubber (elastomer) to absorb continuous small degree rotary oscillations or flexures of the swivel. It accommodates larger oscillations, including complete 360-deg rotations, by locking the elastomeric element at its maximum design flexure capability and permitting the entire shaft assembly to rotate relative to the housing. A 6-in. (152.4-mm), 6000-psig (41,370-kPa) prototype successfully passed a rigorous qualification test program. The swivel should be useful in offshore marine production riser systems and loading terminals.

Copyright © 1982 by ASME
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