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| Number | Title | Issue Date |
| 7927040 | Method for storing, delivering and spooling preassembled pipelines A method and system for storing, delivering and spooling pipelines, such as underwater pipelines used in off-shore well production systems, enables continuous pipeline reeling operations for multi-mile pipelines without the need for welding stops, a spool base of co... | 04/19/2011 |
| 7314065 | Irreversible plug assembly A plug assembly for a tube includes a tapered wedge and a sleeve. The sleeve fits over the wedge and is placed in a tube. Relative movement of the wedge and the sleeve causes the sleeve to expand and plug the tube. The exterior surface of the wedge and the interior ... | 01/01/2008 |
| 7293940 | Guide tube for a flexible pipe for transporting hydrocarbons A guide tube for a flexible pipe for transporting hydrocarbons comprising an internal tubular element of a substantially rectilinear section extending along an axis (A) and extended by a free section having a curvature along its length and a wall which is internal w... | 11/13/2007 |
| 7246971 | Stabilisation of submarine elongate structures A stabilization system (10) for a section of submarine pipeline (11) comprising an end restraint (15) at each end of the section of pipeline and intermediate restraints (20) between the two end restraints (15) for limiting lateral ... | 07/24/2007 |
| 7210503 | Method and device for increasing safety during pipelaying A method and device for preventing water from penetrating into the rising part/intermediate section (12) of a pipe (6) when laying the pipe (6) on or near the seabed (8) by means of a pipelay vessel (1), and where a plug (22... | 05/01/2007 |
| 7204661 | Pipeline system utilizing cold bends An expansion loop for an above-ground pipeline that utilizes cold bent pipe sections having a bend angle of less than 90 degrees and a bend rate (in degrees per foot) of relatively low severity. ... | 04/17/2007 |
| 7189029 | Multi-catenary type rising column An undersea pipe of the riser type providing a connection between a floating support and the sea bottom. The riser has a rigid pipe of the catenary type extending from the floating support to a point of contact with the sea bottom. The catenary riser comprises a low... | 03/13/2007 |
| 7124779 | Device for fastening a manoeuvrable plug for plugging of pipes Arrangement at a plug for sealing liquid- or gas-carrying pipes, comprising several slips (15) arranged peripherally on the plug, so as to allow them to be pushed up along a conical force ring (25) by means of a hydraulic cylinder (5), where the... | 10/24/2006 |
| 7100694 | Marine riser tower The invention relates to a marine riser tower having a plurality of rigid metallic conduits bundled together with a metallic tubular core. The conduits may include production lines for hydrocarbons, water injection lines, and/or gas lift lines. A production line or ... | 09/05/2006 |
| 7077603 | Stress limiting device for offshore oil reservoir production pipe The present invention relates to a device for improving the fatigue strength of a metal pipe a portion of which lies on the sea bottom and one end of which is suspended from a floating support subjected to the dynamic motions of the sea which move the touchdown poin... | 07/18/2006 |
| 7021865 | Apparatus and method for use in laying or recovering offshore pipelines or cables During recovery of an offshore pipeline, to a floating vessel for repair, for example, the pipeline is secured to a hang-off clamp. Due to the motion of the vessel, oscillating bending moments can be caused in the pipeline below the clamp. To reduce these bending mo... | 04/04/2006 |
| 7004680 | Temporary support assembly and method of supporting a flexible line A support assembly for a flexible line comprises a hanger to suspend the flexible line from an offshore oil rig without subjecting the line to a bending stress adjacent the support assembly, a frame supporting the hanger, and a connector coupled to the frame to remo... | 02/28/2006 |
| 7003921 | Expansion joint and reinforcement connection method using the expansion joint An expansive filler joint includes: a securing hollow body (1) embedded in a jointing end (3, 3) of forming concrete (K) or concrete segmental products (K′, K′), the securing hollow body (1) made of a rigid... | 02/28/2006 |
| 6941820 | Cuff type clamping force sensor A cuff type clamping force sensor is mounted around a surface of a load-bearing round column of a forming machine, so as to measure any stretch, tension, and surface stress of the load-bearing round column. The clamping force sensor mainly includes a cuff-type locat... | 09/13/2005 |
| 6910830 | Method for pipelaying from a coil to the sea bed, controlling thermal expansion A method for laying a pipeline on the sea bed from a lay barge in order to achieve controlled thermal expansion, comprises the following steps: Feeding out of the pipeline having a radius of initial residual curvature from a pipeline reel, preferably via a stinger t... | 06/28/2005 |
| 6755595 | Riser impact protection A shell for providing impact protection to a marine drilling riser, the shell comprising a body having at least one hollow chamber defined by inner and outer faces of the shell, the body being provided with a plurality of holes allowing flooding of the chamber. ... | 06/29/2004 |
| 6733208 | Reel type pipeline laying ship and method A pipeline laying ship and an improved method of laying a pipeline in a marine environment is disclosed. The pipeline laying ship is a dynamically positioned barge or self-propelled dynamically positioned vessel with a hull having a deck area that supports a pair of... | 05/11/2004 |
| 6685393 | Method for installing an undersea catenary riser A method for launching a steel catenary riser (SCR) from the seabed to the surface comprising three stages. During the first stage, joints are continually welded to the metal pipe resting on the seabed to form the length of the steel catenary riser (SCR) ... | 02/03/2004 |
| 6588981 | Pipe handling apparatus A pipe handling apparatus for laying elongate articles in deep waters includes a tiltable pipe handling structure housing a traveling clamp for holding and/or paying out under tension the elongate article and a fixed clamp. The traveling clamp is driven v... | 07/08/2003 |
| 6540440 | Method and means for storing and/or transporting an elongated tube or cable Method for preparing an elongated object (22) having a relatively high bending stiffness, such as an elongated tube or cable, before storing and/or transporting object, wherein a) the elongated object is provided with sufficient buoyancy capacity to enabl... | 04/01/2003 |
| 6334739 | Stinger for J-Lay pipelaying system A system for laying a pipeline from a floating vessel onto the ocean floor in relatively deep ocean water which provides guidance, bend restricting, and stabilizing means for the pipe sections while the connection by welding processes are being done and f... | 01/01/2002 |
| 6290431 | Diverless subsea hot tap system with lateral pipe tie-in A diverless process of tapping a pressurized subsea pipeline without removing the pipeline from service. The process includes the steps of lowering and landing a measurement tool onto the pipeline in order to check ovality and straightness of the pipeline... | 09/18/2001 |
| 6276874 | Means and method for the installation of subsea cables A subsea steep wave lock and guide mechanism (1) for elongated articles (2) such as cables, pipes and umbilicals provides a substantially horizontal inlet (6) for the article at seabed level and a substantially vertical flexible article outlet (4) leading... | 08/21/2001 |
| 6276456 | Riser system for sub-sea wells and method of operation A riser system connecting a oil or gas well head and a surface vessel comprises a first riser section maintained substantially vertically under tension, attached for example by a tension cable to a constant load tensioner means mounted on the vessel, and ... | 08/21/2001 |
| 6273643 | Apparatus for deploying an underwater pipe string An apparatus for deploying an underwater pipe string includes a mast, an articulated table, a stinger, and a pipe erector. The mast is affixed to the articulated table and extends above the articulated table. The stinger is affixed to the articulated tabl... | 08/14/2001 |
| 6004071 | Methods of installing elongate underwater structures The disclosure relates to a method of laying a seabed pipeline from a surface vessel. Pipe strings are assembled from their upper ends from the vessel for attachment in a pipeline extending from the vessel to the seabed. An upper end of a pipe string is a... | 12/21/1999 |
| 5975802 | Pipeline laying apparatus A subsea pipe laying system is mounted on a ship and comprises a fabrication station where lengths of pipe are welded together to form a pipeline. The pipeline is then guided to a pipe laying zone where including a straightener under the control of a tens... | 11/02/1999 |
| 5971666 | Pipe laying vessel An apparatus for laying marine pipelines of the type in which the pipeline is assembled along a horizontal axis on board a pipelaying vessel prior to being launched therefrom; in which the pipeline is plastically bent to a desired launch angle and, in mos... | 10/26/1999 |
| 5947641 | Marine pipelaying Method and apparatus for preventing the buckling of a pipeline (10) on either side of a localised zone of increased stiffness in the pipeline (such as a buckle arrester (12)) when the pipeline is bent around an arcuate path, in which packing elements (14)... | 09/07/1999 |
| 5893682 | Pipe-laying A pipe-support roller assembly (5) for a laybarge (1) has the rollers (11) resiliently mounted (15) so that, if an irregularity in the pipe (6) causes a change in the stress on the pipe as it passes over the rollers, the rollers can move so as to accommod... | 04/13/1999 |
| 5718538 | Vertical reel pipe laying vessel A vertical reel pipelaying vessel having a vertical pipe storage reel rotatably positioned aft of midship and a vertical aligner wheel positioned forward of the reel. A guide means includes supports for the aligner wheel on the vessel to permit rotational... | 02/17/1998 |
| 5711638 | System for deploying cable having nodes into a fluid medium and a blowout preventer The system for deploying cable having nodes according to the present invention includes a tubular member, first and second restrictors, and a controller. The cable having nodes travels through the tubular member from a cable supply point to a deployed poi... | 01/27/1998 |
| 5573353 | Vertical reel pipe laying vessel A vertical reel pipelaying vessel having a vertical pipe storage reel rotatably positioned aft of midship and a vertical aligner wheel positioned forward of the reel. A guide means includes supports for the aligner wheel on the vessel to permit rotational... | 11/12/1996 |
| 5533834 | Pipelay stinger A reel pipelaying vessel includes pipe conditioning apparatus at its stern. The pipe conditioning apparatus includes a radius control device for imparting a substantially uniform curve to the pipe after it is unspooled from the reel, straightening apparat... | 07/09/1996 |
| 5449252 | Device for laying tubular conduits comprising a submerged mobile pincer and method using such a device A device for laying tubular conduits from a floating support including a pair of clamps for gripping the tubular conduit. Each clamp can alternately provide a restraining force on the tubular conduit to be laid. The device is characterized in that one of ... | 09/12/1995 |
| 5413434 | Method and installation for laying a pipeline During laying of a pipeline on a surface located under water, on a vessel a pipe is fitted to a pipe string of the pipeline, in each case during a fitting step. Herein during the fitting step the vessel is moved substantially continuously in lengthwise di... | 05/09/1995 |
| 5380129 | Method for laying tubular conduits A method for laying a pipeline formed of joined rigid and flexible tubular conduits on an underwater surface, particularly an ocean bed, by using a floating support. The method includes the steps of: loading onto the floating support a length of flexible ... | 01/10/1995 |
| 5275510 | Offshore tanker loading system The present invention relates to an improved flexible loading system which provides fluid communication between a subsea pipeline and a surface vessel including a hose extending from the subsea pipeline to a first buoyancy tank, a second hose extending fr... | 01/04/1994 |
| 5192166 | Method of controlled bending of a pipeline during laying thereof in the sea A method is described for controlled bending of a pipeline during the laying thereof in the sea, utilizing bend controlling/stopping means which are mounted on the pipeline as a sleeve and interact with the pipeline. To achieve cold bending under controll... | 03/09/1993 |
| 5181798 | Double pipe turntable and stinger A pipelay apparatus and method comprising a steel turntable and a stinger pipe guide which can be supported on the construction deck of a repair vessel or drill ship are provided. The turntable is framed so that loads from two hanging pipes can be securel... | 01/26/1993 |
