Marine pipeline installation system
Patent
·
OSTI ID:6153444
Apparatus is described for simultaneously laying and burying underwater pipelines. The apparatus employs a rigid, structural frame having skids to contact the ocean floor as the device is propelled across it. A plow on the frame, having a knife edge shear blade at its frontal portion, cuts and parts the ocean floor to form a ditch. The plow is vertically adjustable to control the depth of cut and pivotally adjustable to control the angular attitude of the plow with respect to the supporting frame. A combined water air sparge trails in the ditch created by the plow and agitates the sediment falling back into the ditch to prevent the permanent settlement of solid matter in the ditch prior to placement of the pipeline. The ditch is thus retained in an open configuration facilitating installation of a pipeline. Structural vertical supports have adjustable guide members to support and receive the pipeline as constructed from a lay barge and to guide the pipeline into the trench as the device is pulled along by the lay barge. 27 claims.
- Assignee:
- EDB-85-024036
- Patent Number(s):
- US 4091629
- OSTI ID:
- 6153444
- Country of Publication:
- United States
- Language:
- English
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