| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166364000 | Including disaster feature | 12 |
| 20100012327 | ACCUMULATOR FOR SUBSEA EQUIPMENT - Pressure-balanced accumulator apparatus for use in subsea operations is disclosed which comprises a housing and an accumulator within the housing at the first end of the housing. The accumulator has first and second chambers that are hermetically sealed from one another, with a pressurized gas in the first chamber and a pressurized fluid in the second chamber. A third chamber in the housing abuts the accumulator and contains silicon oil fluid. A movable piston is located within the housing proximate the second end of the housing. Ambient pressure is communicated to one end of the piston, and ambient pressure plus the pressure in the second chamber is communicated to the second end of the piston. The cross-sectional areas of the two ends of the piston are selected to optimize the pressure at which the piston begins to expel fluid from the second chamber. | 01-21-2010 |
| 20110174494 | CABLE PROTECTOR - The present invention relates to protector apparatus ( | 07-21-2011 |
| 20120186822 | MODULAR PRESSURE MANAGEMENT OIL SPILL CONTAINMENT SYSTEM AND METHOD - A modular pressure management oil spill containment system is constructed on the floor of an ocean to contain an oil spill caused by a wild well blowout. A base containment module including a hollow wall and at least one pressure relief valve is submerged below a surface of the ocean, positioned on a portion of the ocean floor that circumvents the wild well and its hollow wall is reinforced. At least one additional containment module including a hollow wall and at least one pressure relief valve is submerged below the ocean surface, positioned on top of the base containment module and its hollow wall is also reinforced. A plurality of riser assemblies are connected between at least a portion of the pressure relief valves of the containment modules and at least one containment vessel. The pressure relief valves are controlled to manage the containment of the oil spill. | 07-26-2012 |
| 20130248198 | Safety System for Deep Water Drilling Units Using a Dual Blow Out Preventer System - A dual-BOP or multi-BOP self-standing riser configuration is disclosed, including at least a riser or another similarly fixed tubular structure disposed in communication with an associated drilling vessel and a subsurface well. The system supplements the traditional mud-line level BOP with one or more additional near-surface BOPs, which are tensioned using an adjustable buoyancy chamber rather than by means of a vessel-born tensioning device. | 09-26-2013 |
| 20140190702 | Subsea Connection Apparatus for a Surface Blowout Preventer Stack - A subsea connection apparatus to allow connecting a surface blowout preventer stack and riser to a subsea wellhead is disclosed. The subsea connection apparatus uses a single cavity blowout preventer with a set of shearing blind rams. Hydraulically actuated wellhead connectors are secured to the top and bottom of the blowout preventer to allow connection to a subsea wellhead below the subsea connection apparatus and a well head hub profile on the lower end of a riser above the apparatus. A control system can operate both of the hydraulically actuated connectors and the blowout preventer independently. A frangible bore protector is disposed in the bore of the blowout preventer to protect the shearing blind rams from pipe, tools, and fluids being passed through the blowout preventer and can be sheared by the shearing blind rams along with any drill pipe in the bore. | 07-10-2014 |
| 20140251633 | Subsea Well Intervention System and Methods - A system for performing an intervention on a subsea wellhead, the system including a production tree having a central axis, a first end, a second end, and a first flow bore extending axially from the first end to the second end. The production tree includes a master valve disposed along the first flow bore, a swab valve disposed along the first flow bore between the master valve and the first end, and a shearing device disposed along the first flow bore between the master valve and the second end. The second end of the production tree comprises a connector configured to releasably couple to the subsea wellhead, and the shearing device is configured to shear a component extending through the first flow bore. | 09-11-2014 |
| 20140262314 | SYSTEM FOR DETECTING, CONTAINING AND REMOVING HYDROCARBON LEAKS IN A SUBSEA ENVIRONMENT - A system for the detection, containment and removal of hydrocarbon leaks in a subsea environment. | 09-18-2014 |
| 20140311749 | RISER WEAK LINK - A riser weak link in a riser connects a floating installation or vessel to a hydrocarbon well on the seabed. The weak link includes a first riser part in the form of an upper housing for connecting to a riser upper section; a second riser part in the form of a lower housing for connecting to a riser lower section, wherein one riser part is arranged to extend into the other riser part; and connection devices for releasably connecting the upper and lower housings. The weak link includes a first connection device arranged to fail if a tensile force on the first and second riser parts exceeds a first threshold force, and that the weak link includes a second connection device arranged to fail if a compressive force on the first and second riser parts exceeds a second threshold force. | 10-23-2014 |
| 20140338920 | WORKOVER RISER COMPENSATOR SYSTEM - A tensioning apparatus for applying a substantially constant tension to a workover riser ( | 11-20-2014 |
| 20150034326 | System and Method for Managing Heave Pressure from a Floating Rig - A system compensates for heave induced pressure fluctuations on a floating rig when a drill string or tubular is lifted off bottom and suspended on the rig, such as when tubular connections are made during MPD, tripping, or when a kick is circulated out during conventional drilling. In one embodiment, a liquid and a gas interface moves along a flow line between a riser and a gas accumulator as the tubular moves up and down. In another embodiment, a pressure relief valve or adjustable choke allows the movement of fluid from the riser when the tubular moves down, and a pump with a pressure regulator moves fluid to the riser when the tubular moves up. In other embodiments, a piston connected with the rig or the riser telescoping joint moves in a fluid container thereby communicating a required amount of the fluid either into or out of the riser annulus. The system also compensates for heave induced pressure fluctuations on a floating rig when a riser telescoping joint located below a RCD is moving while drilling. | 02-05-2015 |
| 20160069164 | FLUID COLLECTION RESERVOIR AND ANTI-SPILL MECHANISM - An apparatus for collecting fluids into a reservoir, wherein the reservoir is floating on a body of water and has an opening in the bottom of the reservoir through which the fluids, such as petro-based products, arrive flowing upward from a submersible structure, such as a riser from a fluid source. The reservoir has a canopy and mechanism connected to the rim of the side walls of the reservoir allowing the canopy to pivot. The pivoting canopy and mechanism attached along the rim of the reservoir restrains the fluids contained inside from spilling over the rim into the body of water, say an ocean, and also restrains the ocean waters from spilling over into the reservoir containing the fluids. The reservoir can be used as a temporary holding vessel for the fluids, whereby the fluids can then be vacuumed into a drillship. | 03-10-2016 |
| 20180023716 | Subsea BOP Control System With Dual-Action Check Valve | 01-25-2018 |
