Author: bomuo

In theory, jetting consists of fluidizing the seabed soil so that the heavier pipeline sinks in.

The jetting plough is placed over the pipeline and high pressure water jets from nozzles blast the surrounding soil away from the pipeline.

Jetting disperses the local soil away from the pipeline and creates a wide trench. In most
cases, the soil is not returned immediately and the pipeline gets covered in time depending on the bottom sediment load.

Jetting is done in sands and soft clays, but in hard clays ploughing may be required.

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A type of stratigraphic trap. The termination by thinning or tapering out (“pinching out”) of a reservoir against a nonporous sealing rock creates a favorable geometry to trap hydrocarbons, particularly if the adjacent sealing rock is a source rock such as a shale. The disappearance of a porous, permeable formation between two layers of impervious rock over a horizontal distance

Long and heavy steel pylon driven into the seabed; a system of piles is used as foundation for anchoring a fixed platform or other offshore structures

Small-diameter pipeline, fixed to a larger pipeline, used to transport a product other than that of the main line