Saipem Limited

Christian Cocca

Teresio Signaroldi

Umberto Giovannini

Cristian Scaini

Denis Faidutti

Andrea Provesi

Giovanni Carlo Alloggio

A submarine pipeline towing equipment including: a floater of prismatic shape with a horizontal or vertical axis, with a variable or partially variable buoyancy, whose lower base is at least partially open by an opening or hole to operate as an air chamber. The floater includes: at least one inlet including a valve through which air is supplied; at least one outlet including a valve through which air is discharged; an actuator to control the valve to supply air; an actuator to control the valve to discharge air; a mechanism connecting the equipment to the pipeline; a mechanism transferring air to the floater; a mechanism actuating the actuator to control the valve to supply air in function of a predefined level in the floater; and a mechanism actuating the actuator to control the valve to discharge air in function of the distance of the floater itself from the seabed.

Submarine pipeline towing equipment, system and process

The present invention relates to a welding torch that includes an electrode () that has a longitudinal groove () formed therein which guides a welding wire () which is fed form a laterally spaced-apart location. The electrode () is open and the wire () is supported on one side only. In the region of the welding tip, the electrode () is elongate and the cross-sectional area is smaller than the area at a position further from the tip. Regions between an outer housing () and a main support body () define two shielding gas conduits positioned on opposite sides of the body (), through which gas flows and then combines to form a unitary stream. The body () contains cooled regions which are supplied with cooling fluid by a conduit () and removed by conduit (), parts of which are positioned between the shielding gas conduits close to the welding electrode ().

ARC welding torch including a wire guide open on one side and arranged to receive a welding wire from a laterally spaced apart location and method of using same

Device and method for the towing of underwater pipelines () comprising the removable connection of a series of devices () to the pipeline, positioned at a suitable distance from each other, said devices being capable of providing a float buoyancy to the pipeline which varies according to the distance from the sea bed so that said pipeline can establish a substantially stable attitude at a fixed distance from the bottom, without dragging and with a neutral weight, and wherein said devices form a guide by means of at least one element () embedded in the sea floor in order to oppose side stress and impart variations in the direction of the movement of the pipeline.

Device and method for the towing of underwater pipelines

An actuating device () for a lay ramp () of a vessel () for laying underwater pipelines '() has a runner (), and a carriage () connected to the lay ramp () and which runs along the runner () to lift and lower the lay ramp (); the runner () being defined by a first, a second, and a third portion (), of which the first and third portion () are out of line with respect to each other, and the second portion () is mounted on a movable assembly () to selectively align the second portion () with the first and third portion ().

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Cinisello Balsamo, Italy

Christian Cocca