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| Number | Title | Issue Date |
| 8157004 | Pipe handling apparatus An arbor arranged for attachment to overhead support, such as a top drive or main rig hoist, is arranged to resiliently support a main body. The main body is arranged to support a wedge-lock type pipe gripper assembly on a second arbor that is resiliently supported ... | 04/17/2012 |
| 8074711 | Tubular handling device and methods A tubular member handling apparatus including a tubular member running tool, an elevator, first actuators each extending between the running tool and the elevator, and second actuators each extending between the running tool and a corresponding first actuator. The r... | 12/13/2011 |
| 8037932 | Pipe handling device and safety mechanism A pipe handling assembly includes a pipe engaging apparatus having a pipe gripping mechanism connectable to a top drive such that the top drive transmits rotational movement and axial movement to the pipe gripping mechanism. A pipe handling device is mounted onto th... | 10/18/2011 |
| 8028748 | Tubular control apparatus A control apparatus to receive a tubular member includes a contact member configured to engage the tubular member, and a control mechanism operably coupled to the contact member, wherein the control mechanism is configured to dampen movement of at least one of the t... | 10/04/2011 |
| 7975760 | Tool wrench assembly A tool wrench assembly for a blasthole drill includes a fork pivotally fixed relative to at least one actuator that moves the fork between an engaged and a disengaged position. ... | 07/12/2011 |
| 7971638 | Work string controller Well bore servicing equipment is provided. The well bore servicing equipment comprises a first manipulator to grip a well bore work string, to raise the work string, and to lower the work string. The well bore servicing equipment further comprises a controller to re... | 07/05/2011 |
| 7891418 | Slippage sensor and method of operating an integrated power tong and back-up tong Method and apparatus to make-up or break-out a threaded tubular connection using an integrated power tong and back-up tong (10). The power tong (20) may be disabled upon sensing a predetermined threshold amount of displacement of at least a portion of ... | 02/22/2011 |
| 7874352 | Apparatus for gripping a tubular on a drilling rig Methods and apparatus for running tubulars into and out of a wellbore. A gripping apparatus is activated with an actuator having a primary actuator and a redundant safety feature. The redundant safety feature may include one or more redundant fluid operated pistons.... | 01/25/2011 |
| 7819183 | Work string controller Well bore servicing equipment is provided. The well bore servicing equipment comprises a first manipulator to grip a well bore work string, to raise the work string, and to lower the work string. The well bore servicing equipment further comprises a controller to re... | 10/26/2010 |
| 7806176 | Well tubular running tool A casing running tool comprising an integral elevation module and make-up/torque module. In accordance with one aspect or the invention, the tool is adapted to automatically engage a collared end of a tubular structure such as a casing string segment. The integral m... | 10/05/2010 |
| 7770635 | Wellbore tubular handling torque multiplier A tubular handling torque multiplier includes a torque input end for connection to the quill of a top drive, a torque output end for connection at least indirectly to a well tubular joint to be driven to rotate, gears for adjusting the torque output from the torque ... | 08/10/2010 |
| 7740060 | Method and device at rock drilling Slacking off device (24) for use on a drilling device (2) for rock drilling. The drilling device (2) comprises a rock drill (4) to which a drill string (10) is adapted to be jointed by means of a thread joint. The drill string (... | 06/22/2010 |
| 7699098 | Apparatus for stabbing pipe when using an iron roughneck Drilling apparatus for receiving, moving and aligning pipe sections as they are added to a string of pipe on a drilling rig when using an iron roughneck. After the iron roughneck is moved to well centerline and engaged with the box connection of the pipe suspended i... | 04/20/2010 |
| 7694730 | Spear type blow out preventer A blow out preventer for operating between a spear of a tubular gripping tool and a tubular gripped by the tool includes: an expandable seal carried on the spear and expandable to seal between the spear and the tubular's inner wall, the expandable seal being operabl... | 04/13/2010 |
| 7673675 | Pipe handling device and safety mechanism A pipe handling assembly includes: a pipe engaging apparatus including a pipe gripping mechanism connectable to a top drive such that the top drive transmits rotational movement and axial movement to the pipe gripping mechanism; a pipe handling device for mounting o... | 03/09/2010 |
| 7665514 | Drill stem guide and wrench apparatus A drill stem centralizer and/or breakout wrench includes a frame with opposed hydraulic cylinder actuators mounted on the frame and engaged in with jaw support members for movement toward and away from each other for centralizing or breakout of drill stem sections. ... | 02/23/2010 |
| 7654313 | Method and assembly for casing handling using a kelly rig A method for converting a kelly rig for handling casing includes the formation of a torque reaction guide with elongate members available at a drill site including for example, any of drill collar stands, casing strings, drill pipe stands and cables held in tension.... | 02/02/2010 |
| 7617866 | Methods and apparatus for connecting tubulars using a top drive A connection apparatus for coupling a top drive to a tubular gripping member comprises a body having a first joint coupled to the top drive and a second joint coupled to the tubular gripping member, wherein the body is adapted to allow fluid communication between th... | 11/17/2009 |
| 7591304 | Pipe running tool having wireless telemetry A system for measuring desired drilling parameters of a pipe string during an oil and gas well drilling operation is provided that includes a top drive assembly; a pipe running tool engageable with the pipe string and coupled to the top drive assembly to transmit tr... | 09/22/2009 |
| 7513300 | Casing running and drilling system A method and apparatus for holding and turning a tubular and string of tubulars, such as casing, for make-up and drilling with the tubulars are disclosed. The apparatus generally includes a spear and a clamping head, both of which are mounted to a top drive. The spe... | 04/07/2009 |
| 7438126 | Apparatus for controlling a tool having a mandrel that must be stroked into or out of a well An apparatus for controlling vertical movement of a tubular within a wellhead includes an anchor spool connected atop the wellhead, and a detachable superstructure supporting the tubular. The anchor spool provides connectors for detachably connecting bottom ends of ... | 10/21/2008 |
| 7438127 | Pipe gripping clamp A pipe-gripping clamp assembly is provided for use on a top drive unit to grip sections of drilling pipe. The clamp assembly includes of a pair of hinged jaws that are opened and closed by a pair of rams attached to the jaws and the frame members that make up the as... | 10/21/2008 |
| 7422056 | Pipe running tool having wireless telemetry A system for measuring desired drilling parameters of a pipe string during an oil and gas well drilling operation is provided that includes a top drive assembly; a pipe running tool engageable with the pipe string and coupled to the top drive assembly to transmit tr... | 09/09/2008 |
| 7419000 | Apparatus and method for securing pipes An apparatus for holding in place a first casing while a second casing is connected to the first casing, including an annular clamp made up of three segments hingedly fit together to form a ring. The inner surface of each segment includes an insert within a dovetail... | 09/02/2008 |
| 7419001 | Universal tubing hanger suspension assembly and well completion system and method of using same A tubing hanger suspension assembly for an oil and gas well completion system and a method of installing same. The tubing hanger suspension assembly includes a tubing hanger housing which is positioned in the wellhead housing. The tubing hanger assembly includes a s... | 09/02/2008 |
| 7419012 | Wellbore top drive systems A drive system for wellbore operations, the drive system, in certain, but not necessarily all aspects, including a main body, a motor apparatus, a main shaft extending from the main body and rotatable by the motor, the main shaft having a top end and a bottom end, a... | 09/02/2008 |
| 7401664 | Top drive systems A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, the main shaft having a top end and a bottom end, a quill connected to the main shaft, and a gear system interconnected with the q... | 07/22/2008 |
| 7370707 | Method and apparatus for handling wellbore tubulars Aspects of the present invention provide a tubular handling system for handling wellbore tubulars. In one aspect, the present invention provides a tubular handling system adapted to retain a tubular without damaging the outer surface of the tubular. In another aspec... | 05/13/2008 |
| 7371289 | Cleaning and doping of tubulars Apparatus for cleaning and doping a pin 2 of a tubular 3 during the making or breaking of a string on a well platform. The apparatus comprises a housing 4 having first and second conosed ends 6,7 and arranged in used to be secured at its ... | 05/13/2008 |
| 7360589 | Articulating bail assembly and method An apparatus for performing well intervention work on a rig. The apparatus comprises a first spreader that is operatively connected to a derrick, a pair of I-beams that have a distal end and a proximal end, and wherein the distal end of the pair of I-beams are conne... | 04/22/2008 |
| 7353880 | Method and apparatus for connecting tubulars using a top drive An apparatus for facilitating the connection of tubulars, said apparatus comprising a winch, at least one wire line, and a device for gripping the tubular, the arrangement being such that, in use, the winch can be used to winch said at least one wire and said device... | 04/08/2008 |
| 7350562 | Drilling flange and independent screwed wellhead with metal-to-metal seal and method of use A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal r... | 04/01/2008 |
| 7331746 | Apparatus for handling and racking pipes An apparatus for handling pipes in a derrick and racking the pipes on a pipe racking assembly mounted on the derrick is provided to improve the stability of transferring pipes during a round trip operation. The apparatus includes a rotatable gate assembly mounted on... | 02/19/2008 |
| 7331384 | Stabberless pipe handling system A pipe handling apparatuses is suspended between the bails of a rig to raise, lower and laterally move a single joint of pipe that is being added to a string of pipe extending into a well. ... | 02/19/2008 |
| 7322406 | Elevation sensor for a service hose and an apparatus for positioning and stabbing well tubulars An operational system and method and improved apparatus for positioning and stabbing well tubulars wherein: the grasping members of the apparatus can be folded and unfolded; the boom assembly can be pivoted to a downward clearance position; a plurality of stabbing a... | 01/29/2008 |
| 7320374 | Wellbore top drive systems A system for wellbore operations, the system, in at least certain aspects, including a derrick, a guide beam connected to the derrick, a top drive movable on the guide beam, torque reaction structure connected to the guide beam and to the derrick, skid apparatus hel... | 01/22/2008 |
| 7314088 | System for retrieving a tubular element from a well A system is disclosed for retrieving a tubular element extending into a subsea well provided with a wellhead, the tubular element being provided with a hanger suspending the tubular element at the wellhead, the hanger having a larger outer diameter than the tubular ... | 01/01/2008 |
| 7308934 | Fracturing isolation sleeve An apparatus operatively coupled to a well having a production casing positioned therein, the apparatus including a first device having and internal bore, a second device having an internal bore, and a fracture isolation sleeve disposed at least partially within the... | 12/18/2007 |
| 7308933 | Power assisted lift for lubricator assembly An improved lubricator assembly for receiving a well plunger or other downhole tool wherein a hinge is connected between a lower portion and an upper riser of the lubricator assembly and a power lifting device is included for moving the upper riser off of and onto t... | 12/18/2007 |
| 7290621 | Integrated mast and top drive for drilling rig A process to lower or raise a drilling rig for transportation wherein the drilling rig includes a mast and a top drive. The process to lower includes the steps of moving the top drive within the mast with a vertical guide and torque reaction mechanism to a locked po... | 11/06/2007 |
