| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 166363000 | With safety or emergency shutoff | 40 |
| 20120160509 | APPARATUS AND METHOD FOR ISOLATING AND SECURING AN UNDERWATER OIL WELLHEAD AND BLOWOUT PREVENTER - A containment system having a containment dome and a seal plate which is attached to an oil wellhead casing or riser to prevent oil spills and contamination when an oil leak occurs. The containment dome is sealed to the seal plate by a compression mechanism so that oil will not leak from the containment dome. The containment dome can provide a wellhead patch to a wellhead system wherein the wellhead patch can interface with a capping stack. Chemicals can be injected into the containment dome to prevent hydrates from forming. All aspects of controlling and operating an oil wellhead can be performed through the containment dome and seal plate, and all aspects of installation, regulation, and control of the containment dome can be performed by remote operating vehicles under water. | 06-28-2012 |
| 20130037272 | METHOD AND SYSTEM FOR WELL ACCESS TO SUBTERRANEAN FORMATIONS - The invention provides a method and system for accessing a well to subterranean formations in which a first well control assembly is directly associated with the well and a second well control assembly is remotely and capable of being in fluid communication with the well. | 02-14-2013 |
| 20120175126 | Subsea Safety System Having a Protective Frangible Liner and Method of Operating Same - A subsea safety system ( | 07-12-2012 |
| 20120217020 | WELL CONTAINMENT SYSTEM - A well containment system is described, the system comprises a blow out preventer, the blow out preventer defining a throughbore and including at least one well containment barrier adapted to seal the throughbore, at least one first seal adapted to seal against the lower end of a riser, and at least one second seal adapted to seal against the upper end of a downhole tubular wherein the at least one first seal is located above the at least one well containment barrier and the at least one second seal is located below the at least one well. | 08-30-2012 |
| 20120217019 | SHEAR LASER MODULE AND METHOD OF RETROFITTING AND USE - There is provided a high power shear laser module, which can be readily included in a blowout preventer stack. The shear laser module as the capability of delivering high power laser energy to a tubular within a blowout preventer cavity, cutting the tubular and thus reducing the likelihood that the tubular will inhibit the ability of the blowout preventer to seal off a well. | 08-30-2012 |
| 20130118756 | METHOD AND DEVICE FOR EMERGENCY KILLING OF AN UNDERWATER OIL/GAS WELL - The invention relates to oil-and-gas industry and can be used in emergency killing of wells. The method of emergency killing of a well of underwater head position comprises a cementing composition squeezing, wherein depth of the well section to be cemented is defined basing on the well condition and pressure in it, an injector, fixed on the tank with cementing composition and placed inside a bag made of some flexible material, is bottomed and inserted into the wellhead, the bag being filled with cementing composition which is squeezed into the bag through the injector from the tank, and providing for a firm contact of outer surface of the bag with inner surface of the well, the injector being kept at a target depth by means of the weight of the whole structure filled with the cementing composition, pressure in the bag being maintained till the cementing composition hardening. | 05-16-2013 |
| 20130118755 | Blowout Preventer Shut-In Assembly of Last Resort - A system for drilling and/or producing a subsea wellbore comprises a primary BOP comprising a primary ram BOP. In addition, the system comprises a secondary BOP releasably connected to the primary BOP, the secondary BOP comprising a secondary ram BOP. The primary rain BOP is actuatable by a first control signal. The secondary ram BOP is actuatable by a second control signal. The secondary rain BOP is not actuatable by the first control signal. | 05-16-2013 |
| 20110284236 | Negative accumulator for BOP shear rams - The method of providing increased motive force for one or more rams of a subsea blowout preventer comprising providing a one or more pistons connected to the one or more ram, the pistons having a distal side and a proximate side with respect to the ram, providing a tank contain a first pressure less than the ambient pressure of seawater at the location of the subsea blowout preventer, and communicating the first pressure with the proximate side of the one or more pistons to cause or enhance the differential pressure across the one or more pistons to urge the rams toward the center of the bore of the subsea blowout preventer. | 11-24-2011 |
| 20110290501 | METHOD AND SYSTEM FOR CONTAINING UNCONTROLLED FLOW OF RESERVOIR FLUIDS INTO THE ENVIRONMENT - Systems and methods for quick access and control of a blown-out well or well that is flowing uncontrollably into the environment. Preferred embodiments of the present invention provide a re-entry of the casing of the blown-out well below the mud line and the inoperable blowout preventer. The present invention also provides a method to re-enter a production, or injection well, either subsea below the mud line or above the mud line for surface facility applications. According to a preferred embodiment of the present invention, a miniature wellbore is created from the outer casing through the various smaller casing strings into the final wellbore to protect the structural integrity of the well. Once the casing is safely penetrated, coil tubing and or kill weight fluid can be introduced to stop the uncontrolled flow of reservoir fluid. The well can then be sealed with cement and abandoned as normal practice dictates. | 12-01-2011 |
| 20120024535 | Suction Pile Wellhead and Cap Closure System - Various embodiments of underwater wellhead closure systems are described that include a template having first and second anchoring ports and that is configured to be secured to a floor of a body of water. A suction pile having a cylindrical body with a head portion and an open bottom can be coupled to the first anchoring port, such that the suction pile can provide additional hold down force to the template. The system can also include a suction cap coupled to the second anchoring port, and having a cylindrical body with an open bottom and a head portion having at least one suction pump. | 02-02-2012 |
| 20110056697 | METHOD AND SYSTEM FOR THE EXTINCTION OF AN UNDERWATER WELL FOR THE EXTRACTION OF HYDROCARBONS UNDER UNCONTROLLED FLUID DISCHARGE CONDITIONS - A method for the extinction or oil well-killing or killing of an underwater well for the extraction of hydrocarbons under uncontrolled fluid discharge conditions, also called blowout, by assembling, in correspondence with the lower end portion of a string of pipes for the extinction or killing string, a constraint group for rigid connection between a plurality of remote-operated underwater vehicles and the killing string; detecting the position of a flow of fluids and positioning the killing string substantially in correspondence with said flow; lowering a plurality of remote-operated vehicles close to the lower end portion of the killing string; connecting the remote-operated vehicles to the constraint group; detecting in real time the relative position of the flow of fluids with respect to the vehicles and calculating the position of the outlet hole of the flow; on the basis of the calculated position of the outlet hole, coordinately piloting the vehicles so as to bring the lower end of the string in correspondence with the position of the outlet hole of the flow. | 03-10-2011 |
| 20110056696 | SUBSEA DRILLING - A subsea cutting device for a subsea blow-out preventer or wellhead comprises a tubular body having an axial throughbore, and configured to be fitted to a casing string, the cutting device further comprising a shearing mechanism in the form of a radial cutting system rotatably mounted within a pressure-containing housing, and comprising a plurality of movable cutters arranged around the throughbore and configured for deployment during rotation successively inwards. The cutting device is useful in a subsea shut off device which is latched to a template at surface and run to the sea floor on a casing string which is drilled into place and converted into a riser on a single trip. For the event when emergency disconnection is required, the device may be used to cut the casing and seal in the well. The system then allows a conventional subsea reconnection of the riser. | 03-10-2011 |
| 20110005770 | SUBSEA CONTROL SYSTEM - A technique enables protection of subsea wells. The technique employs a subsea test tree and associated control system to ensure control over the well in a variety of situations. The subsea test tree may be formed with an upper portion releasably coupled to a lower portion. The upper portion employs at least one upper shut-off valve, and the lower portion employs at least one lower shut-off valve to protect against unwanted release of fluids from either above or below the subsea test tree. The subsea test tree also is coupled with the control system in a manner which allows control to be exercised over the at least one upper shut-often valve and the at least one lower shut-off valve. | 01-13-2011 |
| 20110147002 | Subsea Differential-Area Accumulator - An accumulator for a subsea blowout preventer unit including a blowout preventer includes a body. The body includes a hydraulic fluid chamber and a gas chamber. The hydraulic fluid chamber has a smaller inner diameter than the gas chamber. The accumulator further includes a hydraulic fluid port in fluid communication between the hydraulic fluid chamber and the subsea blowout preventer, a hydraulic piston slidably and sealingly mounted in the hydraulic fluid chamber, and a charge piston slidably and sealingly mounted in the gas chamber. A pressure port receives pressure to provide a force on the opposite side of the charge piston from the hydraulic piston. | 06-23-2011 |
| 20110061872 | SYSTEMS AND METHODS FOR CIRCULATING OUT A WELL BORE INFLUX IN A DUAL GRADIENT ENVIRONMENT - Methods and systems for drilling subsea wells bores with dual-gradient mud systems include drilling the subsea well bore while employing a subsea pumping system, a subsea choke manifold and one or more mud return risers to implement the dual gradient mud system. When a well bore influx is detected, the well bore is shut in, and components determine if pressure control may be used to circulate the influx out of the well bore, the size of the influx, and how much the mud system weight will need to be reduced to match the dual gradient hydrostatic head before the influx reaches the subsea pump take point. The subsea pumping system, subsea choke manifold, and mud risers are isolated while the influx is circulated up one or more fluid passages in the drilling riser package using the surface pump, through the wellhead, and out the surface choke manifold. | 03-17-2011 |
| 20120305262 | SUBSEA PRESSURE RELIEF DEVICES AND METHODS - A device for relieving pressure in a subsea component comprises a housing including an inner cavity, an open end in fluid communication with the inner cavity, and a through bore extending from the inner cavity to an outer surface of the housing. In addition, the device comprises a connector coupled to the open end. The connector is configured to releasably engage a mating connector coupled to the subsea component. Further, the device comprises a burst disc assembly mounted to the housing within the through bore. The burst disc assembly is configured to rupture at a predetermined differential pressure between the inner cavity and the environment outside the housing. | 12-06-2012 |
| 20110315396 | METHOD AND APPARATUS FOR CONTROLLING VALVES OF A SUBSEA OIL SPILL CONTAINMENT ASSEMBLY - A method and apparatus are described for controlling valves of a subsea oil spill containment assembly. In one embodiment, a control unit is configured to control at least one reinforcement material input valve of the subsea oil spill containment assembly. In another embodiment, the control unit is configured to control at least one flooding valve of the subsea oil spill containment assembly. In yet another embodiment, the control unit is configured to control a large diameter high pressure valve of the subsea oil spill containment assembly. The control unit may be configured to control each reinforcement material input valve, flooding valve and large diameter high pressure valve of the subsea oil spill containment assembly, either wirelessly or via a wired interface, such that each valve may be maintained in an open position, a partially open position or a closed position, as desired. | 12-29-2011 |
| 20110315394 | METHOD AND APPARATUS FOR CONTAINING AN OIL SPILL CAUSED BY A SUBSEA BLOWOUT - A method and apparatus are described for containing an oil spill caused by a subsea blowout. A cylindrical containment assembly may be positioned such that a wall of the cylindrical containment assembly circumvents a portion of a floor of an ocean where the subsea blowout occurred. A valve assembly may then be positioned on a top perimeter of the wall. The cylindrical containment assembly may form a watertight seal with the ocean floor. At least one mud flap, located on the wall of the cylindrical containment assembly may be activated to control the depth of the cylindrical containment assembly below the ocean floor. Further, a source of pollution, (e.g., a defective blowout preventer (BOP) that caused an oil spill), may be encased by positioning a valve assembly on a top perimeter of a containment wall after the containment wall is positioned to circumvent the source of pollution. | 12-29-2011 |
| 20110315393 | METHOD AND APPARATUS FOR CONTAINING AN UNDERSEA OIL AND/OR GAS SPILL CAUSED BY A DEFECTIVE BLOWOUT PREVENTER (BOP) - A method and apparatus are described for containing oil and/or gas spewing from a defective blowout preventer (BOP) stack located on an ocean floor. In one scenario, a containment assembly having a hollow wall is lowered below the ocean surface, and positioned on a portion of the ocean floor that circumvents the defective BOP stack. The hollow wall of containment assembly is filled with reinforcement material (e.g., cement). Then, a valve assembly is lowered below the ocean surface and positioned on top of the reinforced containment assembly. The valve assembly has a hollow cavity surrounding at least one large diameter high pressure valve that is maintained in an open position. The hollow cavity of the valve assembly is also filled with reinforcement material (e.g., cement). The large diameter high pressure valve is then closed to contain the oil and/or gas within the reinforced containment assembly. | 12-29-2011 |
| 20110315395 | METHOD AND APPARATUS FOR CONTAINING A DEFECTIVE BLOWOUT PREVENTER (BOP) STACK USING BOPSTOPPER ASSEMBLIES HAVING REMOTELY CONTROLLED VALVES AND HEATING ELEMENTS - A method and apparatus are described for containing oil and/or gas spewing from a defective blowout preventer (BOP) stack located on a floor of an ocean using BOPstopper assemblies. A BOPstopper containment assembly is submerged below a surface of the ocean and positioned on a portion of the ocean floor that circumvents the defective BOP stack. Then, a BOPstopper valve assembly is submerged below the ocean surface and positioned on top of the BOPstopper containment assembly to contain the oil and/or gas. Each of these BOPstopper assemblies may comprise a plurality of flooding valves used to submerge the BOPstopper assemblies. Furthermore, each of these BOPstopper assemblies may comprise a plurality of reinforcement material input valves for reinforcing the assemblies with reinforcement material (e.g., cement and/or mud). The flooding valves and the reinforcement material input valves may be remotely controlled from a vessel floating on the ocean surface. | 12-29-2011 |
| 20120000666 | Method and arrangement for sealing a subsea oil wellhead - Several, preferably three, deflection elements are placed and fixed around the wellhead, preferably in equal circumferential distances around the wellhead. For each deflection element a guiding cable is lowered with its head end from one or several, preferably three workspaces in the direction of the wellhead. Each guiding cable is looped with its head end through the corresponding deflection element, wherein each deflection element forms a point of reversal. Each guiding cable is pulled back with its head end side to the corresponding workspace while in return additional guiding cable is supplied and passed through the corresponding deflection element. A sealing element which is fastened to each guiding cable is lowered in the direction of the wellhead by pulling the guiding cables at their head end sides upwards and, in return, supplying the guiding cables in the direction of the wellhead on the lowering side. Later, the guiding cables are attached at a distance from each other around the sealing element, preferably attached at equal circumferential distances around the sealing element. | 01-05-2012 |
| 20120012330 | APPARATUSES AND METHODS FOR CLOSING AND REOPENING A PIPE - An apparatus which includes a housing defining a chamber, the chamber being sealed from an exterior of the housing, wherein the housing further defines an opening in fluid communication with the chamber and the exterior of the housing. The apparatus further includes a valve in fluid communication with the opening and positioned between the chamber and the exterior of the housing and a member at least partially positioned within the chamber and moveable relative to the housing such that opening of the valve allows fluid to enter the chamber from the exterior of the housing and move the member. A method to operate the same is provided. | 01-19-2012 |
| 20120012329 | Method of fixing a broken oil pipe - The usual safety feature of oil pipes is the shut-off valve. Whenever there is a need, such a valve can be closed, and oil is prohibited from spilling into the surroundings. However, the shut-off valve may sometimes be inaccessible. It may be buried deep in the mud, or even worse, there may be no shut-off valve. Such an oil spill could prove disastrous. Fortunately, our invention would provide a solution to just such a situation. We would need to send submarine robots to the scene of the accident. These robots, controlled from the ship on the surface, would insert our specially designed hydraulic head into the pipe. This head would then seal the pipe, stopping any further oil spill. | 01-19-2012 |
| 20120055679 | System and Method for Rescuing a Malfunctioning Subsea Blowout Preventer - A pair of rescue vehicles are deployed on deployment cables to force the shear ram of a sub-sea BOP to shut if it should malfunction. The rescue vehicles may be provided with a camera for remote operation from the surface. The rescue vehicles include securing arms to mate with receiving means on the BOP or its enclosure. The securing arms actuate hydraulic means to release the BOP shear ram piston from hydraulic lock. The rescue vehicles carry their own hydraulic fluid under pressure, or hydraulic fluid pressure may be supplied from the surface or from an ROV, in order to actuate a rod which strikes the accessible BOP shear ram tail rod, forcing the shear ram shut. The rescue vehicles also carry their own securing wedges to slide down behind the vehicle rod, securely holding the BOP shear ram shut. | 03-08-2012 |
| 20120111572 | EMERGENCY CONTROL SYSTEM FOR SUBSEA BLOWOUT PREVENTER - An emergency control system (ECS) for a subsea blowout preventer (BOP) includes a frame having a mud mat for engaging a seafloor; an ECS accumulator connected to the frame; a BOP interface connected to the frame and operable to connect to a stack interface of a BOP stack; a valve connected to the frame and operable to supply hydraulic fluid from the ECS accumulator to the interface; an acoustic receiver; and a controller operable to receive an instruction signal from the acoustic receiver and open the valve. | 05-10-2012 |
| 20120247784 | SYSTEM FOR PROTECTING AGAINST UNDERSEA OIL SPILLS - The system includes a containment housing with an open bottom which is configured to fit over an undersea oil well pipe which is spilling oil, the housing being lockable to a platform or ring surrounding the oil well pipe or positionable on the sea floor. A pipe is positioned internal of the housing into which the oil well pipe can be fitted, the vertical pipe being directed to or connectable to an evacuation pipe which extends to the surface of the sea, through which the oil from the well moves by means of an evacuation pump. The oil is pumped at a rate approximately at least as great as the rate of the oil spill. An infusion line and associated pump is connected to the chamber for pumping mud and/or cement and/or concrete into the chamber to stop and seal the spill and to ensure the housing remains positioned over the oil spill well pipe. | 10-04-2012 |
| 20120132436 | Blowout Preventer with Intervention, Workover Control System Functionality and Method - System and method for controlling a blowout preventer (BOP) stack and a tree attached to a wellhead of a well. The system includes at least a MUX pod configured to receive electrical signals and a fluid under pressure, and to provide a first set of functions to the LMRP part, and a second set of functions to a lower BOP part; a pod extension module configured to receive the fluid under pressure from the MUX pod, and to provide a third set of functions to the tree based on the received fluid under pressure; and a control part configured to be attached to the tree and to communicate with the pod extension module. The third set of functions for the tree is different from the second set of functions provided to the lower BOP part. | 05-31-2012 |
| 20120312543 | DEEPWATER BLOW OUT THROTTLING APPARATUS AND METHOD - A deepwater blow out throttling apparatus and method. The apparatus is sized to reach an equilibrium between the force of the oil flow against the equipment that constitute the apparatus during its assembly and the forces available from the ROV and the drill ship and connexion pipe to hold the pieces in position for assembly. This solution is applicable to all wells and requires sizing the diffusion transition spool and the throttling valves such that the forces of the flow of the free discharging oil can be overcome by the forces available from the ROV and drill ship. Downward loading from the drill ship during the throttling is applied as throttling generates forces and vibration that can exceed the physical strength of the riser piping and connections. Slow closing of the throttling device must be assured to avoid shocking (or water hammering) the oil well installation. | 12-13-2012 |
| 20120168171 | SUBSEA PRESSURE CONTROL SYSTEM - A subsea pressure control system can include at least one subsea choke which variably restricts flow of drilling fluid from a well annulus to a surface location, the choke being positioned at a subsea location, and a subsea process control system which automatically operates the subsea choke, whereby a desired pressure is maintained in the well annulus. Another subsea pressure control system can include at least one subsea choke which variably restricts flow of drilling fluid from a well annulus to a surface location, the choke being positioned at a subsea location, and a subsea pump which pumps the drilling fluid from the subsea location to the surface location. | 07-05-2012 |
| 20120227978 | SYSTEM AND METHOD FOR DRILLING A SUBSEA WELL - A subsea mud pump can be used to return heavy drilling fluid to the surface. In order to provide a less stringent requirement for such a pump and to better manage the bottom hole pressure in the case of a gas kick or well control event, the gas should be separated from the drilling fluid before the drilling fluid enters the subsea mud pump and the pressure within the separating chamber. The mud pump suction should be controlled and kept equal or lower than the ambient seawater pressure. This can be achieved within the cavities of the subsea BOP by a system arrangement and methods explained. This function can be used with or without a drilling riser connecting the subsea BOP to a drilling unit above the body of water. | 09-13-2012 |
| 20130008665 | Method and apparatus for subsea wellhead encapsulation - A BOP stack encapsulation system has dual partially hemispherical dome sections which are each supported and guided for linear movement to open and closed positions relative to base plate. The dual containment domes are moved from open positions to closed and hermetically sealed positions about a BOP stack responsive to sensing BOP leakage or a dangerous pressure condition and are controllable from a remote location. When both containment domes are closed they develop concentrically arranged dual hermetically sealed spaces that enclose the BOP stack and capture any leaked fluid and pressure. Captured well fluid constituents can be bled from the internal spaces of the concentric encapsulation domes as desired. | 01-10-2013 |
| 20120234553 | Mechanism for plugging subsea leaks - A method and apparatus are described for exploiting the crushing power of the ocean, the principle of the lever, and the weight of a deep-sea oil drilling rig to provide a mechanism that is the simplest and most rapidly deployable way possible to plug a subsea leak. This mechanism for plugging subsea leaks has an inflatable plug and a folding reinforcement mechanism that are contained in a streamlining sheath so that they can be inserted into a leaking high-pressure subsea pipe, and a housing that, in a controlled manner, can be crushed by subsea water pressure to force fluid into the inflatable plug to cause it to inflate to plug the leak; and, depending on the pressure in the pipe, there is a weight basket available that can easily add weight to the mechanism, if necessary. | 09-20-2012 |
| 20120261133 | BROKEN PIPE BLOCKER - An apparatus for blocking or capping a pipe end is disclosed. The apparatus includes a tubular body defining a central cavity having an inlet, an outlet, and an axis. The apparatus also includes a plurality of conical blocker rings mounted to an inner diameter surface of the tubular body within the cavity, at least some of the blocker rings being rigid and some of the blocker rings being compliant. The blocker rings are adapted to seal to a pipe end inserted into the central cavity. The rigid blocker rings have an outer diameter joined to an inner diameter of the central cavity, and the compliant blocking rings have an inner diameter smaller than an inner diameter of the rigid blocker rings and are adapted to seal around an exterior of the pipe when inserted from the inlet. | 10-18-2012 |
| 20120318522 | AIR-FREIGHTABLE CONTAINMENT CAP FOR CONTAINING A SUBSEA WELL - A modular containment cap for containing a subsea wellbore discharging hydrocarbons comprises a lower assembly including a spool body having an upper end, a lower end opposite the upper end, and a first throughbore extending from the upper end to the lower end. In addition the containment cap comprises an upper assembly including a spool piece having an upper end, a lower end opposite the upper end, a throughbore extending from the upper end to the lower end, and a first spool piece valve disposed in the throughbore. The first spool piece valve is configured to control the flow of fluids through the throughbore of the spool piece. The upper end of the spool body is releasably connected to the lower end of the spool piece, and the first throughbore of the spool body is coaxially aligned with and in fluid communication with the throughbore of the spool piece. | 12-20-2012 |
| 20120318521 | SUBSEA CONTAINMENT CAP ADAPTERS - A method for controlling hydrocarbons flowing from a subsea structure comprises lowering an adapter from the surface to a subsea structure. The adapter has a through bore extending between an upper connector having a first connector profile and a lower connector having a second connector profile that is different than the first connector profile. In addition, the method comprises coupling the lower connector of the adapter to the subsea structure. Further, the method comprises lowering a containment cap from the surface to the adapter. Still further, the method comprises coupling the containment cap to the upper connector of the adapter. | 12-20-2012 |
| 20120325491 | SUBSEA SAFETY VALVE SYSTEM - A valve system for ensuring well closure upon exposure to a predetermined condition even where a well access line is disposed through the valve. This system may be configured with a supplemental power supply capable of effectuating a cutting closure of the valve. Thus, any obstructing well access line such as coiled tubing may be cut during closure to ensure sealing off of the well, even if the cutting mechanism is separated from its traditional power supply by shear or parting of a portion of the landing string. Once more, the supplemental power sufficient for a cutting closure is only provided in the event of a predetermined condition such as the emergence of a potentially hazardous tubular separation. | 12-27-2012 |
| 20120279720 | Subsea Pressure Delivery System - A subsea system including a frame including an intensifier, the intensifier providing structural support to the frame and capable of providing pressurized delivery fluid. The intensifier includes an intensifier chamber and a delivery fluid chamber separated by a piston, the intensifier chamber capable of receiving ambient pressure to provide a pressure on the delivery fluid through the piston. Also, a regulation system regulates the amount of ambient pressure communicated to the intensifier chamber to maintain the delivery fluid pressure substantially constant as the delivery fluid is depleted. | 11-08-2012 |
| 20120318520 | DIVERTER SYSTEM FOR A SUBSEA WELL - A diverter system for a subsea well has a blowout preventer and a diverter affixed to an outlet of the blowout preventer. The blowout preventer will have an interior passageway with an inlet at a bottom thereof and an outlet at a top thereof. The diverter has a flow passageway extending therethrough and communication with the interior passageway of the blowout preventer. The diverter has a valve therein for changing a flow rate of a fluid flowing through the flow passageway. The diverter has at least one channel opening in valved relation to the flow passageway so as to allow the fluid from the flow passageway to pass outwardly of the diverter. At least one flow line is in valved communication with the flow passageway so as to allow fluids or materials to be introduced into the flow passageway. | 12-20-2012 |
| 20120090850 | APPARATUSES AND METHODS FOR CLOSING AND REOPENING A PIPE - A method for installing a pipe closing apparatus in an oil well rig system positioned at least partially in a body of water, comprising the steps of shutting off a flow of oil through a well head, removing a section of riser pipe from the oil well rig system and connecting the pipe closing apparatus to a remaining portion of riser pipe and positioning the pipe closing apparatus between the remaining portion of riser pipe and the well head. | 04-19-2012 |
| 20120325490 | METHOD FOR BLOCKING OUTFLOW OF PETROLEUM OR THE LIKE DUE TO DAMAGE TO SUBSEA PETROLEUM WELL STEEL PIPE OR THE LIKE - The present invention relates to blocking a flow of crude oil or natural gas from a steel pipe for extracting the oil or the like that has been installed in the sea when the steel pipe is broken. When a steel pipe | 12-27-2012 |
