SUBSEA 7 LIMITED Patent applications |
Patent application number | Title | Published |
20150345666 | Pipelaying - A method clamps elongate elements in a parallel piggybacked arrangement during subsea laying of the elements. The method has opposed reciprocating jaws for forcing together clamp segments around the elongate elements to assemble a piggybacking clamp that applies clamping forces to the elongate elements. | 12-03-2015 |
20130309020 | METHOD OF INSTALLING A BUOY AND APPARATUS FOR TENSIONING A BUOY TO AN ANCHORING LOCATION - A method of installing a production buoy at a subsea anchoring location is disclosed. The method includes floating a production buoy over a subsea anchoring location. Then, hanging at least a tether off the production buoy such that the or each tether extends from the production buoy towards the subsea anchoring location occurs. The method includes submerging the production buoy to a depth which allows connection of the or each tether to the subsea anchoring location. An apparatus suitable for use with this method is also provided. | 11-21-2013 |
20130136540 | WELDING METHOD OF A FIRST TO A SECOND TUBULAR, THE TUBULARS COMPRISING A CORROSION RESISTANT ALLOY ON AN INTERNAL FACE THEREOF - A method of butt welding a first and second tubular to join them together, the tubulars being suitable for use in an underwater environment and normally being made from carbon steel and having a corrosion resistant alloy (CRA) provided on an internal face thereof, the method comprising: depositing from an external side of the first and second tubulars, a weld-filler material onto a butt joint between the first and second tubulars. Preferably the weld filler on the external side is a carbon steel weld filler and for the internal side is a CRA weld filler. In this manner sufficiently strong circumferential welds may be provided especially for CRA clad tubulars. A method of deploying the tubulars underwater and an apparatus comprising tubulars welded together is also disclosed. | 05-30-2013 |
20120145407 | METHOD OF CONNECTING A FLEXIBLE RISER TO AN UPPER RISER ASSEMBLY - A method is described for connecting a flexible upper riser part to a lower riser part via an upper riser assembly supporting a lower riser termination. The method includes securing a cable linkage to a riser connector at the lower end of the flexible upper riser part. The method includes operating a winching means on the upper riser assembly to wind in the cable linkage and draw the riser connector into a docking position on the upper riser assembly. Then coupling the riser connector to the lower riser termination occurs. A corresponding method of disconnecting the flexible riser part is also described, as well as a method of mounting the winching mechanism on a submerged landing platform. | 06-14-2012 |
20110142543 | Method of Using Sacrificial Pipe String - The present disclosure is directed to a method and system of laying pipe using a sacrificial pipe string to extend the length of an A&R winch wire. In one aspect, present disclosure is directed to a method of positioning a flowpipe on a sea floor from a vessel. The method includes lowering a first end of a flowpipe from the vessel. Additionally, the method includes connecting a pipeline end termination to a second end of the flowpipe. Also, the method includes connecting a first end of a sacrificial pipe to the pipeline end termination. In addition, the method includes connecting a winch wire to a second end of the sacrificial pipe. Furthermore, the method includes lowering the sacrificial pipe with the winch wire so that the pipeline end termination rests on the sea floor. Additionally, the method includes disconnecting the sacrificial pipe from the pipeline end termination. | 06-16-2011 |
20090095209 | APPARATUS AND METHOD FOR OPERATING AUTONOMOUS UNDERWATER VEHICLES - A method and apparatus of operating an autonomous underwater vehicle (AUV) may include receiving an AUV in a receptacle of a submersible station. The AUV and the submersible station may be launched to an underwater location. The AUV may engage with the submersible station before, after or during a mission, and may return to the same or a different submersible station after part, or all, of the mission has been completed. | 04-16-2009 |