Abstract: A device for removing misalignments between flanges of pipeline ends. More specifically, a device that, operated by an ROV, allows flange holes at the ends of subsea pipelines to be aligned so that interconnection operations between said pipelines can be embodied. To this end, the device described herein comprises an elongated metallic body having at least two diameters and presenting a gradual reduction between the component diameters. Additionally, a fixed nut is mounted on the larger diameter side of the elongated body, followed by a manipulator for administration by the ROV. On the other hand, a movable nut is mounted on the smaller diameter side of the elongated body, and the tightening movement made by the ROV on this movable nut causes the device to pass through the holes to be aligned, precisely, in the direction of the larger diameter of the device of the invention.

Abstract: A sealing ring positioning device that, operated by a remotely operated vehicle (ROV), allows sealing rings to be installed, in the subsea environment, in a groove of a flange of a first pipeline to be interconnected to a second pipeline. The sealing ring positioning device is provided with an upper portion that is presented as a handle by which the ROV handles the device in a subsea environment, a lower portion having a semicircle shape and configured to hold the sealing ring to be arranged in the flange groove in a subsea environment, and a middle portion including a groove holding a magnet that is configured to hold the device firmly positioned in the pipeline in a subsea environment, during the arrangement of the ring in the groove of the flange.

Abstract: The present invention relates to a structure and method of hoisting pipelines for subsea connection assisted by a remotely operated vehicle, ROV. Particularly, the present invention describes a pipeline hoisting structure comprising three beams joined together in a U-shape, and two hoisting systems, each being coupled to one of the vertical beams of the hoisting structure.

Abstract: The present invention describes a device for actuation in the subsea environment, precisely in the termination, maintenance, repair or re-termination of umbilical cables through an ROV. By means of the proposed device, it becomes possible to correct the termination of subsea umbilicals without having to proceed with a saturation diving to take the required termination measures. In short, the termination device 100 of the present invention is presented in an assembly comprising: a base 1, which supports a pressing and termination structure 2, wherein the structure 2 is fed by a feeding path 3 and, the final assembly of these elements is transported, or handled, by an ROV through a handle 4.

Abstract: The present invention addresses to a method of clearing submarine pipes, in which the method solves the most complex cases of obstruction of flexible submarine pipes, where the conventional approach is ineffective. Additionally, the present invention represents a cheaper alternative to the clearance of pipes in scenarios where the conventional approach is applicable.