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| Number | Title | Issue Date |
| 8132777 | Blowout preventer having modified hydraulic operator A blowout preventer for use in the oil and gas industry having a single modified, dual-acting hydraulic operator per door, comprising a reconfigured adapter. The reconfigured adapter comprises a body having a longitudinal bore, a plurality of hydraulic fluid passage... | 03/13/2012 |
| 7832706 | RAM BOP position sensor A ram-type blowout preventer includes a pair of ram assemblies adapted for controlled lateral movement to and from a vertical bore. Each ram assembly has a hydraulic piston connected at a first end to a ram block and at a second end to a piston tail. A magnetostrict... | 11/16/2010 |
| 7798466 | Ram locking blowout preventer A blowout preventer including, in certain aspects, a main body, a bonnet movably connected to the main body, the bonnet having a bonnet channel with interior threading, a ram shaft with a first portion extending through the main body and a second portion extending t... | 09/21/2010 |
| 7703739 | Ram BOP shear device A ram-type blowout preventer includes a first ram block having a first shearing element and a first sealing element, a second ram block opposing the first ram block and having a second shearing element and a second sealing element, a load intensifying member coupled... | 04/27/2010 |
| 7637474 | Fluid saving blowout preventer operator system A hydraulic blowout preventer operator comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through the bon... | 12/29/2009 |
| 7611120 | Method and apparatus An apparatus and a method of substantially sealing a throughbore of a tubular with a line running therethrough. The method comprises the steps of: (a) substantially enclosing the line and sealing a portion of the throughbore around the line using an enclosing means;... | 11/03/2009 |
| 7559523 | Dual-cylinder blowout preventer operator system A hydraulic blowout preventer operator comprises a first piston rod coupled to a closure member. The operator further comprises a first operator housing coupled to a bonnet and a head. The first piston rod extends through the bonnet into the first operator housing w... | 07/14/2009 |
| 7533865 | Blowout preventer operator locking system A blowout preventer operator locking system comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through th... | 05/19/2009 |
| 7389817 | Riser control device A riser control device, particularly designed to be used in connection with spool or horizontal production trees (12) for wells in sub-sea oil and gas installations. Within a housing (1,2) of the device is provided, in opposed direction, radially movab... | 06/24/2008 |
| 7374146 | Dual-cylinder blowout preventer operator system A hydraulic blowout preventer operator comprises a first piston rod coupled to a closure member. The operator further comprises a first operator housing coupled to a bonnet and a head. The first piston rod extends through the bonnet into the first operator housing w... | 05/20/2008 |
| 7367396 | Blowout preventers and methods of use Methods and apparatuses for severing a wellbore tubular, the apparatus, in certain aspects, including: a first member movable toward a tubular to be severed; a second member with a second blade disposed opposite to the first member and movable toward the tubular; a ... | 05/06/2008 |
| 7357187 | BOP conversion apparatus A conversion apparatus comprising a first plate and a second plate. The first plate comprises at least one coupling mechanism, and the second plate comprises at least one coupling mechanism. The first plate is configured to couple with a blow-out preventer (BOP) bod... | 04/15/2008 |
| 7354026 | Unitary blade seal for a shearing blind ram in a ram type blowout preventer A unitary blade seal for a shearing blind ram of a ram-type blowout preventer is disclosed and includes an elongate member having a generally semi-circular cross section with a curved upper surface and a lower surface. The lower surface has a pair of laterally exten... | 04/08/2008 |
| 7338027 | Fluid saving blowout preventer operator system A hydraulic blowout preventer operator comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through the bon... | 03/04/2008 |
| 7331562 | Blowout preventer with breech assembly A blowout preventer which, in certain aspects, has a main body with a main top, a main bottom, and a main bore therethrough from the main top to the main bottom, at least one breech assembly secured to the main body, ram apparatus movable within the breech assembly ... | 02/19/2008 |
| 7300033 | Blowout preventer operator locking system A blowout preventer operator locking system comprises a piston rod having one end coupled to a closure member. The operator further comprises an operator housing having one end coupled to a bonnet and a second end coupled to a head. The piston rod extends through th... | 11/27/2007 |
| 7281586 | Mounts for blowout preventer bonnets A mount for a bonnet of a blowout preventer includes at least one support member coupled to a body of the blowout preventer, and a bonnet mounting member moveably coupled to the at least one support member and adapted to move substantially normal to a face of the bo... | 10/16/2007 |
| 7270190 | Variable size coil tubing gripping elements A variable ram for coiled tubing comprises a pair of opposing rams, each ram having a ram body with a vertical channel formed therein; a pair of opposing pins within each ram head, the pins extending into the channel; and a toothed gripper having a hole therein size... | 09/18/2007 |
| 7246666 | Mounts for blowout preventer bonnets A mount for a bonnet of a blowout preventer includes at least one support member coupled to a body of the blowout preventer, and a bonnet mounting member moveably coupled to the at least one support member and adapted to move substantially normal to a face of the bo... | 07/24/2007 |
| 7243713 | Shear/seal ram assembly for a ram-type blowout prevention system An improved shear/seal ram assembly used in ram-type BOPs is disclosed. The disclosed invention is a unique shear/seal ram assembly in which rail seal actuators attached to or integrally formed in a planar surface of one shear blade mate with and slide within corres... | 07/17/2007 |
| 7240727 | Armored stripper rubber An armored stripper rubber is provided that protects the drillstring bore of the stripper rubber from substrate infiltration, yet pivotally dilates to facilitate the passage of drillstring components through the bore while effectively maintaining a fluid-tight seal.... | 07/10/2007 |
| 7225873 | Coiled tubing cutter A cutting module to sever a tubing in a well includes a piston and shear blade. The piston includes at least two moveable telescoping elements, which are adapted to expand the first piston from a retracted length to an expanded length. The shear blade is connected t... | 06/05/2007 |
| 7222674 | Modular, distributed, ROV retrievable subsea control system, associated deepwater subsea blowout preventer stack configuration, and methods of use A distributed function control module adapted for use in a modular blowout preventer (BOP) stack for use subsea comprises a housing, adapted to be manipulated by a remotely operated vehicle (ROV) with a stab portion adapted to be received into a BOP stack control mo... | 05/29/2007 |
| 7216715 | Modular, distributed, ROV retrievable subsea control system, associated deepwater subsea blowout preventer stack configuration, and methods of use A distributed function control module adapted for use in a modular blowout preventer (BOP) stack for use subsea comprises a housing, adapted to be manipulated by a remotely operated vehicle (ROV) with a stab portion adapted to be received into a BOP stack control mo... | 05/15/2007 |
| 7216714 | Modular, distributed, ROV retrievable subsea control system, associated deepwater subsea blowout preventer stack configuration, and methods of use A distributed function control module adapted for use in a modular blowout preventer (BOP) stack for use subsea comprises a housing, adapted to be manipulated by a remotely operated vehicle (ROV) with a stab portion adapted to be received into a BOP stack control mo... | 05/15/2007 |
| 7207382 | Shearing sealing ram The present invention provides a method, apparatus, and system to shear a tubular member disposed in a well and seal the wellbore using a unique blade seal. In at least one embodiment, the blade seal is adapted to interface with opposing rams in a blowout preventer.... | 04/24/2007 |
| 7195224 | Blowout preventer and locking mechanism A blowout preventer having a main body, a ram system with ram apparatus, a movement system with movable shaft apparatus connected to the ram apparatus, the ram apparatus movable from a first open-ram position to a second closed-ram position, the movable shaft appara... | 03/27/2007 |
| 7137610 | Wellhead production blowout preventer The invention broadly provides a ram incorporating a thermoplastic seal for sealing in the horizontal bore of a wellhead production blowout preventer to close off the vertical bore of the well, the ram being adapted to seal at its front end against either a polish r... | 11/21/2006 |
| 7121348 | Mounts for blowout preventer bonnets A mount for a bonnet of a blowout preventer includes at least one support member coupled to a body of the blowout preventer, and a bonnet mounting member moveably coupled to the at least one support member and adapted to move substantially normal to a face of the bo... | 10/17/2006 |
| 7096960 | Mounts for blowout preventer bonnets A mount for a bonnet of a blowout preventer includes at least one support member coupled to a body of the blowout preventer, and a bonnet mounting member moveably coupled to the at least one support member and adapted to move substantially normal to a face of the bo... | 08/29/2006 |
| 7086467 | Coiled tubing cutter A subsea production system includes a blowout preventer stack that is adapted to seal and contain pressure in a well. The blowout preventer stack has a passageway through which a tubular string may extend into the well. The subsea production system includes a subsea... | 08/08/2006 |
| 7080685 | High pressure rotating drilling head assembly with hydraulically removable packer The present invention generally provides a reduced downtime maintenance apparatus and method for replacing and/or repairing a subassembly in sealing equipment for oil field use. The invention allows the removal of rotating portions of a rotary drilling head without ... | 07/25/2006 |
| 7059238 | Method and apparatus for stroke position sensor for hydraulic cylinder A fluid pressure cylinder assembly is provided with a sensor for sensing the extension of a piston rod from a tubular cylinder. The tubular cylinder has a base block that seals the end of the tubular cylinder with an inner wall. The inner wall has a threaded bore fo... | 06/13/2006 |
| 7055825 | Shaft sealing apparatus Herein disclosed is a shaft sealing apparatus which comprises a vacuum casing formed with a vacuum chamber, a driving shaft having an outer cylindrical surface and movably extending in the vacuum chamber of the vacuum casing, and a sealing ring in the form of an ann... | 06/06/2006 |
| 7051990 | Blowout preventer and movable bonnet support A blowout preventer which, in certain aspects, has a main body with a main top, a main bottom, and a main bore therethrough from the main top to the main bottom, at least one bonnet releasably secured to the main body, the at least one bonnet containing movable ram ... | 05/30/2006 |
| 7051989 | Blowout preventer and movable ram block support A blowout preventer which, in certain aspects, has a main body and ram block holding apparatus releasably secured to and movable with respect to the main body and/or to a door or bonnet, movable ram apparatus within the body including a ram block, the ram block hold... | 05/30/2006 |
| 7044430 | Lock bars for blowout preventer Lock bars for blowout preventers and blowout preventers having, in certain aspects, a body with a top, a bottom, and a bore therethrough, at least one bonnet releasably secured to the body, a first lock bar recess defined by a first portion in the body and a second ... | 05/16/2006 |
| 7025322 | Blowout valve assembly The invention relates to a blowout valve assembly (blowout preventer (BOP)) comprising a connecting channel, which can be closed by at least one closing device, whereby the closing device can be transversally displaced with regard to the connecting channel by means ... | 04/11/2006 |
| 7017881 | Blowout preventer ram packer and wear insert A ram packer for a hydraulic blowout preventer is provided that includes a steel reinforced hard elastomeric body which has a recess in the packer face for receiving a replaceable wear insert having shoulders on the insert surfaces that are relieved. By relieving th... | 03/28/2006 |
| 7011160 | High torque and high capacity rotatable center core with ram body assemblies An apparatus for use in a drill string is disclosed. The apparatus includes an inner core assembly having a first and second transverse bore, and wherein the inner core assembly has a first end and a second end. The apparatus further includes a first and second pist... | 03/14/2006 |
