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| Number | Title | Issue Date |
| 8152411 | Guide arrangement Guide arrangement for marine risers, in particular for offshore oil and gas operations. The guide arrangement has at least one guide structure (21, 22) for a length of riser, a frame assembly (10, 10A-D) for supporting said guide structure, anchor mean... | 04/10/2012 |
| 8123437 | Pipeline assembly comprising an anchoring device The invention relates to a pipeline assembly and a method of installing a pipeline assembly, wherein the pipeline extends at least in part on a seabed and curves upwardly from the seabed along a curved section thereof, the pipeline extending toward a delivery end pr... | 02/28/2012 |
| 8092119 | Pipeline buoyancy control assembly and tiedown A pipeline buoyancy control assembly is operable to simultaneously retain a plurality of pipelines against buoyancy forces. Respective ends of two retaining straps corresponding to two respective pipelines engage a tie-down member of a single control assembly. The r... | 01/10/2012 |
| 8007203 | Method and installation for connecting a rigid submarine pipe and a flexible submarine pipe A method and an installation for connecting a rigid submarine pipe and a flexible submarine pipe. The rigid pipe terminates in a free connection end. The flexible pipe has a flow-line portion and a suspended portion. The flow-line portion has an input end connected ... | 08/30/2011 |
| 7942608 | Anchoring collar A flowline for hydrocarbon which is capable of being reeled and which is unreeled for being laid on the seabed using the reeled lay method is comprised of successive pipe sections having opposing ends which are joined by an anchor collar that is butt welded to the o... | 05/17/2011 |
| 7794177 | Stab and hinge-over pipeline and terminal assembly A subsea system for securing an end portion of a pipeline includes a subsea foundation. The foundation has a lower portion located below the sea floor and an upper portion extending above the sea floor. The subsea foundation has a receptacle formed in the upper port... | 09/14/2010 |
| 7654773 | System and method for installing a subsea pipeline The disclosure provides a system and method for installing subsea equipment, such as a pipeline and equipment associated therewith in a target area, generally having restricted overhead access. An anchor can be installed in the seabed and can include one or more she... | 02/02/2010 |
| 7360968 | Method and device for anchoring a pipeline An anchoring method and device, for anchoring a pipeline to a seabed. The pipeline may extend from a well which is located on a seabed to a floating platform. Tension forces which are exerted on the pipeline by the platform are diverted into the seabed by the anchor... | 04/22/2008 |
| 7344338 | Pipeline ballast and method of use A pipeline ballast has at least two sacks adapted to straddle a pipeline. Permeable sacks filled with inert high density aggregate such as barite uses less dry weight of aggregate to restrain buoyancy. Preferably a top sack and two pairs of side sacks connected to e... | 03/18/2008 |
| 7341531 | Portable anchoring device for a sports goal An anchoring device for a sports goal, such as a soccer goal, is provided as a portable bag having a pair of laterally spaced-apart weight-carrying compartments interconnected by at least one central strip of material. The central strip defines at least one opening ... | 03/11/2008 |
| 7316246 | Hose assembly A hose assembly comprising a flexible hose and at least one co-extending flexible member. The hose and the member are secured together for tandem movement by means of at least one intermediate resilient mounting means. In operation tension and/or compression induced... | 01/08/2008 |
| 7287932 | Ballasting system for on-site sewage treatment and disposal system A ballasting system for an on-site sewage treatment and disposal system for areas having a ground water level above a minimum depth below grade. A perimeter barrier is arranged around a selected subterraneal volume within a ground area. The perimeter barrier has a c... | 10/30/2007 |
| 7287936 | Shallow water riser configuration A shallow water riser extending between a seabed connection and a floating support connection and of a length through the shallow water to be in wave form with at least one and, as illustrated, two wave areas in contact with the seabed. A protective sheath optionall... | 10/30/2007 |
| 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 |
| 7241075 | Umbilical anchoring clamp A subsea cable (3) designed to extend from a floating structure (1) on the sea surface down to a subsea structure (2) on the sea floor with a first portion (3a) extending from the floating structure (1) to the sea floor and ... | 07/10/2007 |
| 7234410 | Buoyancy control systems for tubes A buoyancy control system for controlling the buoyancy of a tube may includes generally tubular length of buoyancy control material having a selected buoyancy characteristic. The length of buoyancy control material may be attached to a section of the length of the t... | 06/26/2007 |
| 7104728 | Method for deploying seafloor equipment A method for deploying and retrieving seafloor equipment modules is disclosed. A conveyor has a fixed end and a free end. The conveyor is deployed into a body of water until the free end reaches, or is proximate to, the seafloor. The conveyor is dragged through the ... | 09/12/2006 |
| 7073978 | Lightweight catenary system A lightweight catenary system for deepsea operations in which a lightweight flexible pipe such as disclosed in U.S. Pat. No. 6,491,779 is suspended in seawater from a vessel or platform, and having a positive or nearly positive buoyancy, and which is stabilized by d... | 07/11/2006 |
| 7066686 | Automatic control methods for positioning the lower end of a filiform structure, notably an oil pipe, at sea Method intended for automatic control of an underwater pipe for connecting the lower end of the pipe to a wellhead, wherein the following stages are carried out: Stage 1: determining a mathematical model expressing the position of ... | 06/27/2006 |
| 7059416 | Buoyancy can for offshore oil and gas riser A buoyancy can for supporting an offshore oil and gas riser includes an axial bore through which the riser extends coaxially, and a radio-axial slot extending through a side of the can and into the axial bore. A pair of spaced-apart support features are disposed coa... | 06/13/2006 |
| 7044228 | Flowline jumper for subsea well A subsea well system has a flowline jumper that extends between components on the sea floor. The jumper has connectors on each end for connecting to the two components and has a curved portion. At least a portion of the jumper is buoyant to cause it to assume a vert... | 05/16/2006 |
| 7040841 | Shallow water riser support A conduit structure (44) connects subsea oil wells to a floating structure (12) such as a vessel, in shallow water, the conduit structure providing a low cost and reliable fluid connection during drift of the vessel. The conduit structure includes a se... | 05/09/2006 |
| 7036599 | Method and apparatus for cutting underwater structures A method for the cutting of underwater structures below the level of the sea bottom on which they are installed, comprises determining an ideal plane of cutting, having considered the characteristic features of the structure i.e. its morphology and its positioning o... | 05/02/2006 |
| 7029356 | Buoyancy control systems for tubes Buoyancy control methods for tubes are described. In one embodiment, a buoyancy control method can include a composite tube and a buoyancy control material for controlling the buoyancy of the composite tube. The composite tube can include an internal liner an extern... | 04/18/2006 |
| 7029205 | Apparatus for pipeline stabilization and shoreline erosion protection Disclosed is an apparatus for pipeline stabilization and shoreline erosion protection, termed a BulkMat device, for protecting and securing pipelines, which are typically located in ditches or on the floor of large bodies of water. In preferred form, the BulkMat com... | 04/18/2006 |
| 7025533 | Concentrated buoyancy subsea pipeline apparatus and method Various apparatuses and methods to traverse an undersea topographic feature (12) with a subsea pipeline (18) are disclosed. The apparatuses and methods of the present invention accomplish this task through the use of a concentrated buoyancy scheme (... | 04/11/2006 |
| 7025535 | Seafloor/surface connecting installation for a submarine pipeline which is connected to a riser by means of at least one elbow pipe element that is supported by a base A bottom-to-surface connection installation for an undersea pipe. The installation comprises a vertical riser having its bottom end connected to an undersea pipe on the sea bed, and having a float at its top end, and a pipe connecting a floating support at the top e... | 04/11/2006 |
| 6913043 | Polyamide-based composition for flexible pipes containing oil or gas A composition comprising by weight: 70 to 96% of at least one polyamide chosen from PA-11, PA-12, aliphatic polyamides resulting from the condensation of an aliphatic diamine having from 6 to 12 carbon atoms and an aliphatic diacid... | 07/05/2005 |
| 6901716 | Ground stake for holding drain pipe A one piece ground stake for securing drain, waste or vent pipe relative to the ground comprises a wire rod bent to form a hook having a ground engaging shank, a pipe engaging bend or cradle and a connecting leg connected between the pipe engaging bend and the shank... | 06/07/2005 |
| 6854930 | Underwater pipeline connection joined to a riser The present invention relates to an installation providing a bottom-to-surface connection for an undersea pipe resting on the sea bottom, in particular at great depth, the installation being of the hybrid tower type having a static base placed on the sea bottom. In ... | 02/15/2005 |
| 6811355 | Loading arrangement for floating production storage and offloading vessel A loading arrangement includes a riser that extends from a subsea structure to a coupling element for coupling the riser to a vessel. The coupling element includes a buoy body which is connected to a retention member via a flexible connection part. The retention mem... | 11/02/2004 |
| 6797221 | Process for the manufacture of a protecting and immobilizing element of the mattress-like type, and element so obtained A process for the manufacture of a protecting and immobilizing element of the mattress-like type consists in providing containing means (2, 20) and a layer of flexible material (3, 21) inside them, with the peripheral edges (4, 22) of the flexib... | 09/28/2004 |
| 6685396 | Method and apparatus for suction anchor and mooring deployment and connection A method and apparatus for deployment of mooring systems for buoyant marine structures such as mobile offshore drilling units (MODU's) and for connecting the same to the mooring lines thereof. An anchor handling vessel carries one or more anchors each hav... | 02/03/2004 |
| 6474254 | Submarine deployed ocean bottom seismic system A method and vehicle to deploy and retrieve seismic apparatus to and from the ocean bottom and to acquire data from the seismic apparatus. Submersible robotic vessels deploy and retrieve the seismic apparatus to the ocean bottom to depths of up to 5,000 m... | 11/05/2002 |
| 6457908 | Method and apparatus for suction anchor and mooring deployment and connection A method and apparatus for deployment of mooring systems for buoyant marine structure such as mobile offshore drilling units (MODU's) and for connecting the same to the mooring lines thereof. An anchor handling vessel carries one or more anchors each havi... | 10/01/2002 |
| 6454494 | Device for anchoring a pipeline A device for anchoring a pipeline has a tubular lower portion formed so as to be screwed into soil and firmly retained in the soil, a tubular extension having a lower end connected with the lower portion and an upper end connectable to a rotary drive, and... | 09/24/2002 |
| 6439808 | Method and a device for protective encapsulation of pipe loops installable on the seabed A method and a device for the protective encapsulation of an oil or natural gas pipe loop within an outer jacket or cover for installation on the seabed, where the end portions of the pipe loop are coupled to an underwater structure. The protecting encaps... | 08/27/2002 |
| 6416253 | Abrasive resistant open cell articulated seabed mat Concrete blocks with an open cell structure extending throughout the block are assembled in substantially parallel columns and rows to from a mat structure capable of articulating over underwater structures. The blocks are assembled by flexible cables tha... | 07/09/2002 |
| 6409428 | Apparatus for securing a tubular structure to an anchor An apparatus for releasably securing a tubular structure of a floating installation to an anchor fixedly secured to an underwater floor has a first connection element mounted at one end of the tubular structure and a second connection element configured a... | 06/25/2002 |
| 6350085 | Cable deployment system and method of using same A cable deployment system and method for laying a cable on the sea floor. The cable deployment system includes a cable having a first cable section connected to a riser cable section. The riser cable section includes an armor that is connected to a drum c... | 02/26/2002 |
