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| Number | Title | Issue Date |
| 8167051 | Selective agitation A fluid actuated downhole tool for inducing movement of a downhole apparatus is described. The tool comprises a body for coupling to downhole apparatus, the body being adapted to accommodate now of fluid therethrough and including a flow-modifying arrangement for mo... | 05/01/2012 |
| 8146672 | Method and apparatus for retrieving and installing a drill lock assembly for casing drilling A method of installing a drilling tool at a lower end of a string of casing suspended in a borehole employs a setting tool run by wireline. The setting tool is latched to a drilling tool connected a drill lock assembly. After landing in a profile sub at the lower en... | 04/03/2012 |
| 8146673 | Method of activating a downhole tool assembly A downhole tool assembly has a sleeve with a continuous j-slot, a lug rotator ring configured to move axially relative to the sleeve and having a lug configured to move within the continuous j-slot, and a rupture disk configured to prevent the lug from moving within... | 04/03/2012 |
| 8118106 | Flowback tool In one embodiment, a flowback tool for running a tubular string into a wellbore includes a tubular housing having a bore therethrough and a tubular mandrel. The mandrel: has a bore therethrough in communication with the housing bore, is longitudinally movable relati... | 02/21/2012 |
| 8100187 | Multipurpose tubular running tool A tubular running tool includes a mandrel assembly having an upper mandrel, a lower mandrel and a mid-mandrel, wherein the upper mandrel, the lower mandrel and the mid-mandrel rotate in unison; the lower mandrel having a tubular gripping portion; a slip disposed wit... | 01/24/2012 |
| 8082999 | Drilling and completion deflector A tool assembly is provided. The tool assembly comprises a drilling deflector and a completion deflector, the completion deflector coupled to the drilling deflector. ... | 12/27/2011 |
| 7954553 | Use of low impact expansion to reduce flow friction Systems and methods for increasing fluid flow characteristics within a hydrocarbon production tubing string within a wellbore. An expansion member is passed through the interior flowbore of one or more production tubing string members. The expansion member smoothes ... | 06/07/2011 |
| 7946348 | Rotation tool A downhole rotation tool comprises a housing rotatable and axially slideable in relation to a gear shaft. The gear shaft is located interior of the housing. A tube gear is located intermediate the gear shaft and the housing. Helical threading on the gear shaft exter... | 05/24/2011 |
| 7931091 | Open-hole wellbore lining Embodiments of the present invention provide systems and methods for lining a wellbore. In certain aspects, the systems and methods comprise providing a fluid composition that is solidifiable or gellable on exposure to actinic radiation of a predetermined wavelength... | 04/26/2011 |
| 7921924 | System and method for controlling actuation of a well component A technique is provided for controlling actuation of a well component. A resistance device is deployed in a tool string and connected to a well tool to be actuated. The resistance device comprises a deformable body and a deforming member that move relative to one an... | 04/12/2011 |
| 7896086 | Logging tool deployment systems and methods without pressure compensation Systems and processes are provided for safely facilitating transfer of down-hole devices through an adaptive seal assembly capping a well under pressure. At least one dynamic seal is provided having a size and shape to accommodate varying cross section of an elongat... | 03/01/2011 |
| 7896087 | Method of subsurface lubrication to facilitate well completion, re-completion and workover A method of subsurface lubrication facilitates well completion, re-completion and workover while increasing safety and reducing expense. The method involves using a subsurface lubricator mounted to a wellhead of the cased wellbore to lubricate a downhole tool string... | 03/01/2011 |
| 7878255 | Method of activating a downhole tool assembly The downhole tool assembly has a sleeve with a continuous j-slot, a lug rotator ring configured to move axially relative to the sleeve and having a lug configured to move within the continuous j-slot, and a rupture disk configured to prevent the lug from moving with... | 02/01/2011 |
| 7857065 | Device for selective movement of well tools and also a method of using same A device for use in the selective movement of a well tool in or through at least a portion of a pipe string. The portion of the pipe string being provided with a plurality of electromagnets which are arranged to produce a magnetic field in order to move the well too... | 12/28/2010 |
| 7857066 | Downhole tools utilizing electroactive polymers for actuating release mechanisms In one aspect, an apparatus for use in a wellbore is provided that may include: a tool configured to be conveyed into the wellbore by a conveying member; and an electro-active polymer device (“EAP device”) configured to connect the tool to the conveying member w... | 12/28/2010 |
| 7854267 | Methods and systems to activate downhole tools with light The present invention comprises a system and methods to actuate downhole tools by transmitting an optical signal through an optical fiber to the downhole tool. The optical signal can comprise a specific optical signal frequency, signal, wavelength or intensity. The ... | 12/21/2010 |
| 7845420 | 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... | 12/07/2010 |
| 7841414 | 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... | 11/30/2010 |
| 7793730 | Lubricator system A lubricator system for receiving the intervention tool string includes a tubular body defining a tubular bore, and the tubular bore having a wall portion defining an aperture with a tool guide disposed in said aperture. A first sleeve surrounds the tubular body and... | 09/14/2010 |
| 7770655 | Conductor casing installation by anchor handling/tug/supply vessel An anchor handling/tug/supply (AHTS) vessel is employed to engage conductor casings with the seafloor. The conductor casings initially penetrate the seafloor to a first depth under their own weight. The conductor casings may optimally be further engaged with the sea... | 08/10/2010 |
| 7766087 | Methods and apparatus for placement of well equipment A method and downhole tool are presented herein for driving completion equipment in a borehole. The method comprises the steps of positioning the completion equipment in the borehole; and moving the completion equipment along the borehole by operation of a downhole ... | 08/03/2010 |
| 7740077 | Downhole oilfield tubulars The installation and use of abrasion and corrosion resistant polyolefin and polyolefin blend liners in the production or injection string of a well is shown. The lining is employed for the principal purpose of reducing wear or corrosion on the tubing string or wear ... | 06/22/2010 |
| 7721809 | Wellbore instrument module having magnetic clamp for use in cased wellbores A magnetically clamped wellbore instrument module includes a substantially non-magnetic housing configured to traverse an interior of the wellbore. At least one electromagnet is disposed at a longitudinally spaced apart position along the housing. The at least one e... | 05/25/2010 |
| 7669662 | Casing feeder A top drive system for drilling with casing includes a casing feeder and a torque head. In one embodiment, the casing feeder is adapted to position a casing for engagement with the torque head. The casing feeder includes a pair of conveying arms for engagement with ... | 03/02/2010 |
| 7669663 | Resettable actuator for downhole tool In one embodiment of the invention, a downhole tool string component comprising a through bore running there through formed to accept drilling fluid. At least one mechanical actuation device is also disposed within the through bore. A guide channel is disposed withi... | 03/02/2010 |
| 7647979 | Downhole electrical power generation based on thermo-tunneling of electrons An apparatus for and a method of generating electrical power downhole using a quantum thermoelectric generator and operating a downhole device using the generated power. ... | 01/19/2010 |
| 7631697 | Oilfield apparatus comprising swellable elastomers having nanosensors therein and methods of using same in oilfield application An oilfield apparatus has a swellable elastomeric composition that includes a swellable elastomer and one or more nanosensors dispersed therein. An oilfield assembly for exploring for, drilling for, testing for, or producing hydrocarbons includes various oilfield el... | 12/15/2009 |
| 7628213 | Multi-cycle downhole tool with hydraulic damping A downhole tool which includes a locking bar to allow movement of a sleeve within the tool over a pre-defined range. The range is defined by a recess arranged axially or circumferentially in the tool, in which the bar locates. Fluid can be vented from the recess to ... | 12/08/2009 |
| 7604059 | Downhole tools An improved centralizer is provided for centralization of tubulars such as casings, liners, production tubing, and production screens, in oil/gas wells. Such a centralizer comprises a tubular body, wherein a portion of an outermost surface of the tubular body is for... | 10/20/2009 |
| 7591319 | Gas activated actuator device for downhole tools An actuator device for setting a downhole tool is disclosed. The actuator device includes a gas releasing material that releases a gas when activated by a solvent or other activator. The gas produced due to the contact with the activator is captured within a chamber... | 09/22/2009 |
| 7584797 | Method of subsurface lubrication to facilitate well completion, re-completion and workover A method of subsurface lubrication facilitates well completion, re-completion and workover while increasing safety and reducing expense. The method involves using a subsurface lubricator mounted to a wellhead of the cased wellbore to lubricate a downhole tool string... | 09/08/2009 |
| 7552777 | Self-energized downhole tool Setting mechanisms for downhole tools are described that take advantage of hydrostatic pressure in the wellbore which is harnessed to set a tool after exposure to well fluids for a given time or temperature defeats a lock and allows hydrostatic forces to trigger the... | 06/30/2009 |
| 7549479 | Tubular flotation with pressurized fluid In one embodiment, a method of installing tubular conduits (for example, casing, liners, sand screens) into a deep or highly deviated borehole is disclosed. A lower plug (1) is attached at one end of a portion of a tubular conduit. This end is inserted into a... | 06/23/2009 |
| 7506691 | Upper-completion single trip system with hydraulic internal seal receptacle assembly An upper-completion single trip system is described which includes a hydraulic internal seal receptacle assemble. The HISR assembly includes an overshot assembly selectively connected to a mandrel assembly. Once fully actuated, relative axial motion therebetween is ... | 03/24/2009 |
| 7497268 | Drill pipe elevators and methods of moving drill pipe A drill pipe elevator includes first and second separable pieces. Each piece comprises a drill pipe-receiving groove, and a pair of diametrically opposed projections with each projection forming only part of a pair of diametrically opposed lifting posts. The first a... | 03/03/2009 |
| 7493962 | Control line telemetry A system and method enable telemetry between a downhole device located in a wellbore and an uphole device. Electrical signals are communicated between locations via at least one fluid carrying control line. The control line provides a path for fluid flow as well as ... | 02/24/2009 |
| 7428932 | Completion system for a well A completion system for a well including an upper production tubing disposed within a wellbore. An upper packer engaging the upper production tubing a top pin connector with seal assembly engaging the upper packer. A first intermediate production tubing disposed bet... | 09/30/2008 |
| 7422066 | System for direct vertical connection between contiguous subsea equipment and method of installation of said connection A system for the direct vertical connection between contiguous sub sea equipment is described, having one or more hydrocarbon flow and/or control interconnection between same, so as to dispense with the use of connecting jumpers. One mode of said system comprises a ... | 09/09/2008 |
| 7416028 | Telemetry system for the bi-directional communication of data between a well point and a terminal unit situated on the surface A telemetry system for bi-directional communication of data between a well point and a terminal unit situated on a surface, which can be used inside drilling or production strings. The system includes data transmission and optional reception devices. An active vehic... | 08/26/2008 |
| 7413021 | Method and conduit for transmitting signals An expandable tubular sleeve having utility for lining a downhole tubular member includes a tubular body having a portion that is predisposed to initiate expansion thereof under the application of internal fluid pressure. The predisposed portion of the body may be a... | 08/19/2008 |
