Class / Patent application number | Description | Number of patent applications / Date published |
405171000 | By control of buoyancy | 20 |
20080286049 | Clamping Device for Buoyancy Bodies - Buoyancy unit for use on a riser for sub sea applications, particularly for great depths, with a clamp | 11-20-2008 |
20090214298 | STABILISING OF SUBMARINE ELONGATE STRUCTURES - A stabilisation system ( | 08-27-2009 |
20100166501 | DEVICE AND METHOD FOR THE TOWING OF UNDERWATER PIPELINES - Device and method for the towing of underwater pipelines ( | 07-01-2010 |
20100183371 | IMPROVEMENTS RELATING TO HOSE - A hose comprising an inner tubular structure, an outer tube and an insulation layer, wherein the inner tubular structure comprises a tubular body disposed between inner and outer gripping members, the tubular body including a sealing layer, and being formed of a material capable of withstanding cryogenic temperatures, wherein the outer tube comprises a rubber layer and a reinforcing layer disposed around the rubber layer, wherein the insulation layer is either incorporated in the inner tubular structure and/or is disposed between the inner tubular structure and the outer tube. | 07-22-2010 |
20110091284 | Rigid Hull Gas-Can Buoys Variable Buoyancy - The present invention is an apparatus and method directed to a variable buoyancy gas-can buoyancy module or buoy having a flexible barrier between a variable volume gas chamber in the gas-can hull and water in the hull. More specifically, the present invention is directed to a variable buoyancy module for a Self Supporting Riser (SSR) wherein the tension in the SSR may be increased/decreased by increasing/decreasing the variable volume of a chamber formed by a flexible liner that provides a barrier between the variable volume gas chamber in the gas-can hull and water. | 04-21-2011 |
20120009021 | SUBMARINE PIPELINE TOWING EQUIPMENT, SYSTEM AND PROCESS - A submarine pipeline towing equipment including: a floater of prismatic shape with a horizontal or vertical axis, with a variable or partially variable buoyancy, whose lower base is at least partially open by an opening or hole to operate as an air chamber. The floater includes: at least one inlet including a valve through which air is supplied; at least one outlet including a valve through which air is discharged; an actuator to control the valve to supply air; an actuator to control the valve to discharge air; a mechanism connecting the equipment to the pipeline; a mechanism transferring air to the floater; a mechanism actuating the actuator to control the valve to supply air in function of a predefined level in the floater; and a mechanism actuating the actuator to control the valve to discharge air in function of the distance of the floater itself from the seabed. | 01-12-2012 |
20120107050 | 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 provided at the water surface, wherein a connecting device connects the pipeline at a coupling point to an anchoring device at the seabed for preventing the coupling point from moving upward. The invention further relates to a pipeline device comprising at least two pipeline assemblies which are interconnected at a substantial distance from the seabed. | 05-03-2012 |
20120114420 | GROUP AND METHOD FOR LAYING AND BURYING PIPELINES AT THE SEAFLOOR - The present invention relates to a group and a method for laying and burying pipelines at the seafloor, wherein the laying and burying group according to the present invention comprises a digging device ( | 05-10-2012 |
20130028662 | METHOD AND SYSTEM OF A MARINE GEOPHYSICAL SURVEY CABLE RETRIEVER - A marine geophysical survey cable retriever system. At least some of the illustrative embodiments are methods including causing a submerged survey cable to surface. In some cases, causing the submerged survey cable to surface includes: shedding ballast weights when the survey cable reaches or exceeds a first predetermined depth; and inflating a lifting bag when the survey cable reaches or exceeds a second predetermined depth. | 01-31-2013 |
20130028663 | Method and System of Retriever Systems for Marine Geophysical Survey Cables - Retriever systems for marine geophysical survey cables. At least some of the illustrative embodiments are methods including causing a submerged sensor streamer to surface by flooding an intermediate chamber with water, the intermediate chamber defined within a cylinder of a housing coupled to the sensor streamer, the flooding of the intermediate chamber responsive to the sensor streamer reaching or exceeding a predetermined depth; and responsive to flooding the intermediate chamber moving a first piston within the cylinder; and thereby puncturing a seal of a compressed gas cylinder responsive to movement of the first piston, the puncturing makes the sensor streamer more positively buoyant. | 01-31-2013 |
20130115009 | LATERAL BUCKLING MITIGATION APPARATUS, METHODS AND SYSTEMS FOR USE WITH SUBSEA CONDUITS - Disclosed are systems and methods for controlling lateral deformation and reducing axial displacement, also referred to as walking, of a subsea conduit such as a pipeline for conveying produced hydrocarbon fluids. The systems and methods include the installation of rolling assemblies on the conduit at predetermined locations. The rolling assemblies include elements for forming rolling modules rotatable with respect to the conduit. Also disclosed is a system for monitoring displacement of the conduit over time. | 05-09-2013 |
20130251457 | PIPE FLOAT - A pipe float is configured for receiving a pipe therein and providing buoyancy for maintaining the pipe along the surface of a body of water. The pipe float has an inner surface presenting a central passage adapted for receiving the pipe, the inner surface including a plurality of preferably substantially planar, longitudinally extending panels which provide a continuous inner surface. Adjacent panels are angularly oriented relative to one another, and the pipe float is preferably provided as a plurality of pipe float sections assembled together whereby one panel of a pipe float section is preferably oriented at an obtuse angle to an adjacent panel of that pipe float section. The panels may be of different transverse dimensions whereby the passage has a greater transverse dimension G which is substantially greater than a smaller transverse dimension S, with the outer diameter D of the pipe received in the passage being of a value equal to or smaller than G and greater than or equal to S. | 09-26-2013 |
20130287499 | Lifting Device for Drilling Riser - Systems for lifting drilling risers that serve as thrust collars to retain buoyancy modules on the risers and also enable the risers to be lifted using lifting lugs that are attached to the thrust collars. In one embodiment, a lifting device uses two annular ribs at the edges of a cylindrical collar, wherein the ribs have substantially constant height, but varying thickness. The thickness of each rib is greater at the position of the lifting lug, and may also be greater at its base than that its top or outermost edge. The collar may be segmented, where the segments are bolted together to assemble the device around the riser. The segments may be pre-stressed to reduce stresses during lifting. The device may include an elastomeric layer on its inner surface. | 10-31-2013 |
20130309017 | Method and System of Retriever Systems for Marine Geophysical Survey Sensor Streamers - Retriever systems for marine geophysical survey sensor streamers. At least some of the illustrative embodiments are methods including attaching a retriever system to a sensor streamer by: wrapping a lifting bag assembly at least partially around the sensor streamer, the lifting bag assembly comprising a deflated lifting bag, a gas cylinder, and a depth trigger mechanism; and covering the lifting bag assembly with an outer cover. | 11-21-2013 |
20140270967 | SYSTEMS AND METHODS FOR PROTECTING SUBSEA PIPELINE FROM EXCESSIVE STRESS OR FATIGUE LOADING - Disclosed are systems and methods for protecting subsea pipeline from damage caused by excessive stress or fatigue loading caused by geo-hazards, and environmental and operating loads. The systems and methods utilize lifting buoyancy modules capable of being attached to a section of subsea pipeline to lift the subsea pipeline off the seabed to a predetermined height over a predetermined length upon being activated by a planned or unplanned triggering event. | 09-18-2014 |
20150030393 | METHOD AND SYSTEM OF DEPTH TRIGGERS FOR MARINE GEOPHYSICAL SURVEY CABLE RETRIEVER SYSTEMS - Depth triggers for marine geophysical survey cable retriever systems. At least some of the illustrative embodiments include causing a submerged geophysical survey cable to surface. In some cases, the causing the cable to surface may include: fracturing a frangible link wherein the frangible link, before the fracturing, affixes position of a piston within a cylinder bore of a housing coupled to the geophysical survey cable, and the fracturing of the frangible link responsive to pressure exerted on a face of the piston as the geophysical survey cable reaches or exceeds a predetermined depth; moving the piston within the cylinder bore; and deploying a mechanism that makes the geophysical survey cable more positively buoyant. | 01-29-2015 |
20150037102 | METHOD AND SYSTEM OF RETRIEVER SYSTEMS FOR MARINE GEOPHYSICAL SURVEY CABLES - Retriever systems for marine geophysical survey cables. At least some of the illustrative embodiments are methods including causing a submerged sensor streamer to surface. The causing may be by moving a piston within a cylinder of a housing coupled to the sensor streamer, the moving of the piston responsive to pressure exerted on a face of the piston as the sensor streamer reaches or exceeds a predetermined depth, wherein the pressure exerted on the face of the piston overcomes a latching force tending to hold the piston in place at depths above the predetermined depth; and responsive to the piston overcoming the force that latches the piston releasing a ballast weight, wherein prior to the releasing the ballast weight is at least partially held in place based on position of the piston, and the releasing responsive to movement of the piston. | 02-05-2015 |
20160053919 | FLEXIBLE PIPE SUPPORT - A method and apparatus are disclosed for supporting a flexible pipe. The method includes the steps of responsive to a change in at least one condition experienced by a flexible pipe, varying an amount of support provided at at least one location on the flexible pipe. | 02-25-2016 |
20160169415 | METHOD AND SYSTEM OF RETRIEVER SYSTEMS FOR MARINE GEOPHYSICAL SURVEY CABLES | 06-16-2016 |
20160377197 | APPARATUS AND METHOD FOR POSITIONING UNDERWATER PIPE - An apparatus for positioning an underwater pipe includes a plurality of fixing members for disposing on an outer circumferential surface of the underwater pipe in a spaced apart manner, a submersible unit connected to one of the fixing members, and a counterweight unit. The submersible unit is configured to float the underwater pipe on a water surface and submerge the underwater pipe. The counterweight unit is connected to the other one of the fixing members when the underwater pipe is submerged for positioning the underwater pipe on a bottom of a body of water. | 12-29-2016 |