Title: Device for restraining lateral movement of subsea equipment

Abstract: A device is disclosed for restraining lateral movement of large underwater equipment, such as a blowout preventer (BOP) stack for use on subsea wells, when retrieving or running such equipment through the well of a floating vessel. A plurality of rollers are angularly positioned about the well, each roller being capable of rolling longitudinally (vertically) along the equipment. Each roller is connected to shock absorbers for cushioning lateral movement of the equipment and to a piston cylinder for moving each roller toward and away from the equipment.

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Inventors: Homer, Joseph F. (Anchorage, AK, US)
Glaeser, John L. (Anchorage, AK, US)
Bright, Robert P. (Anchorage, AK, US)

Application Number: 803816
Filing Date: 1977-06-06
Publication_date: 1979-01-30
Assignee: Exxon Production Research Company (Houston, TX)
Primary Class(es): 114/264 166/341, 175/5, 267/140, 405/213
Other Classes:
US Patent Ref:

2952979	Sep, 1960	Rolando	114/220.
3528497	Sep, 1970	Lehman	175/7.
3895677	Jul, 1975	Bokenkamp	166/0.

Other Refs:
Primary Examiner: Blix, Trygve M.
Assistant Examiner: Basinger, Sherman D.
Attorney: Schneider; J. S.