A launch and recovery apparatus is for a surface vessel, a surface vessel is for use on water, and related methods are for launching or recovering an underwater unit. The unmanned surface vessel may have a ramp member for providing a ramp structure under the water for facilitating launch or recovery of the underwater unit, the ramp structure having an incline for the underwater unit and an aperture or gap penetrating through the ramp structure for communicating a flow of water in the aperture or gap relative to the vessel. The surface vessel is advanced across the water, obtaining a flow of water relative to the vessel in the aperture or gap through the underwater ramp structure, the underwater unit is supported on the incline of the ramp structure, and the underwater unit is moved up or down the incline to facilitate the launch or recovery of the underwater unit.
A remote operated underwater vehicle, ROV, is provided, where the ROV includes at least one extendible pair of tubulars supported on the ROV, the one tubular of the pair being movable longitudinally relative to the other tubular of the pair, for extending a combined reach of the tubulars; and at least one pump connected to the tubulars, the pump being operable for pumping or suctioning fluid through the pair.
Launch and recovery apparatus for a surface vessel, a surface vessel (1) for use on water, e.g. an unmanned surface vessel (USV), and related methods of launching or recovering an underwater unit, e.g. an ROV are described. In various embodiments the unmanned surface vessel has at least one ramp member (10) for providing a ramp structure under the water for facilitating launch or recovery of the underwater unit, the underwater ramp structure comprising an incline for the underwater unit and at least one aperture (17) or gap penetrating through the ramp structure for communicating a flow of water (B) in the aperture or gap relative to the vessel. In various methods, the surface vessel is advanced across the water, obtaining a flow of water relative to the vessel in the aperture or gap through the underwater ramp structure, the underwater unit is supported on the incline of the ramp structure, and the underwater unit is moved up or down the incline to facilitate in the launch or recovery of the underwater unit.
In various examples, a remote operated underwater vehicle, ROV, is provided, where the ROV includes at least one extendible pair of tubulars supported on the ROV, the one tubular of the pair being movable longitudinally relative to the other tubular of the pair, for extending a combined reach of the tubulars; and at least one pump connected to the tubulars, the pump being operable for pumping or suctioning fluid through the pair.
A cutting apparatus (1) comprising an elongated frame (11) which is rotatable around a centre axis (18) and is provided with a first end portion (111) and a second end portion (112), a drive station (16) for a continuous cutting wire (17) arranged at the second end portion (112), the cutting wire (17) extending between the drive station (16) and a curved return element (121) arranged at the first end portion (111) of the frame (11), a wire guide (15) being arranged to guide the cutting wire (17) from a direction substantially parallel to the centre axis (18) of the frame (11) to a direction coinciding with a plane which is perpendicular to the centre axis (18), the return element (121) for the cutting wire (17) being displaceable between an inoperative position, in which the return element (121) is arranged in the frame (11), and an operative position, in which the return element (121) projects from the frame (11) with a curve centre axis (1211) substantially parallel to the centre axis (18) of the frame (11), and the return element (121) having a thickness that is smaller than a cutting- wire diameter (D).
E21B 29/12 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground specially adapted for underwater installations
09 - Scientific and electric apparatus and instruments
12 - Land, air and water vehicles; parts of land vehicles
42 - Scientific, technological and industrial services, research and design
Goods & Services
Data processing apparatus; Surveying instruments; Surveying machines and instruments Remotely operated vehicles for underwater inspections Data-acquisition and collection for calibration and coordinate-measurement purposes; Electronic monitoring and reporting of subsea apparatuses using computers or sensors; Surveying; Underwater structural inspection services; Marine surveying services
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Building construction; repair; installation services. Technological services; engineering; mapping, testing,
inspection and supervision of pipelines under water.
