Patent application number | Description | Published |
20130003651 | TELECOMMUNICATION SYSTEM COMPRISING A CENTRAL IP ROUTER COMPOSED OF A SATELLITE AND OF A GROUND ROUTER - The subject of the invention is a satellite comprising at least one central router, a source terminal and a destination terminal. The source terminal comprises means for transmitting, via the central router, IP packets fragmented into at least one level-2 fragment to the destination terminal to which a destination IP address is allocated. The said central router is composed of a satellite and of a ground router. The satellite comprises means for implementing a switching of the IP packets without reassembling the level-2 fragments sent by the source terminal to the destination terminal, the said fragments comprising a reference to the Destination IP address used as basis for the switching. The ground router comprises means for determining IP routing parameters, the said parameters being transmitted by the ground router to the satellite so as to configure the way in which the switching is carried out by the said satellite. | 01-03-2013 |
20140355516 | METHODS FOR TRANSMITTING AND RECEIVING DATA BETWEEN A TERMINAL AND A GATEWAY, IN PARTICULAR VIA A SATELLITE LINK - A method for transmitting data between a terminal and a gateway, the data being transported by Ethernet frames comprising an Ethernet header and a payload, which are themselves encapsulated in lower level packets each comprising a header containing a medium access address, comprises the following steps: determining contexts common to frames whose Ethernet headers have identical fields, and defining an identifier of each the context; associating all or some of the frames with the corresponding context identifiers and suppressing the fields from their Ethernet headers; and introducing the context identifier of each frame for which the fields of the Ethernet header have been suppressed from the header of the lower level packet encapsulating it by replacing its medium access address. A method for receiving data transmitted by means of such a method. | 12-04-2014 |
20160080072 | SATELLITE COMMUNICATIONS NETWORKING - A method of operating a satellite communication network is disclosed. The network includes a plurality of satellites interconnected by a plurality of satellite-to-satellite communication links. Each of the plurality of satellites is configured to communicate with at least one ground station using respective ground-satellite communication links. The method includes transmitting a routing table to each of the satellites. Each routing table has a list of destination satellites, and defines at least two possible routes leading to it. An alert message identifying a problem communication link is transmitted to a subset of the plurality of satellites. In response to receiving the alert message, subsequent data packets are routed through the communication network by the satellites using their respective routing table to avoid the problem communication link. | 03-17-2016 |
Patent application number | Description | Published |
20080197627 | ANNULAR CLAMP - There is described an annular clamp comprising a split ring having two ends. There is a respective lug integrally formed on each of the ends of the split ring, with each lug extending outwardly from the split ring in a substantially radial direction. A respective lug aperture is formed through each of the lugs such that when the lugs are brought into a confronting relationship the lug apertures together define a path for receiving a linear bolt. The annual clamp further comprises a nut for receiving a linear bolt. The nut has a threaded aperture, and is moveably retained in one of the lug apertures such that a longitudinal axis of the threaded aperture is moveable within a plane defined by the split ring. There is also described a method of connecting two pipes using the annular clamp. The method comprises the steps of (a) ensuring the annular clamp is in an open configuration with the linear bolt extending through the other lug aperture and into threaded engagement with the nut; (b) aligning the pipes in a required connection position within the annular clamp whilst the linear bolt remains in threaded engagement with the nut; and (c) securing the annular clamp by tightening the nut and linear bolt until the lugs are in a confronting relationship. | 08-21-2008 |
20130334815 | PROFILE CLAMP - Profile clamp and method of forming same. The profile clamp includes a first half-shell having a first tensioning head on a first circumferential end and a first connection geometry on a second circumferential end, a second half-shell having a second tensioning head on a first circumferential end and a second connection geometry on a second circumferential end, and, in an installation-ready state, a hinge connection, which is formed by an engagement between the first connection geometry and the second connection geometry, having a limited opening angle. | 12-19-2013 |
20140250638 | SCREW CONNECTION, IN PARTICULAR FOR A CLAMP, AND CLAMP - Screw connection, in particular, a tension clamp, and method of forming the screw connection. The screw connection includes a screw having a screw head and an external thread with a thread turn profile and a thread axis, and a mating thread element having an internal thread, matched to the external thread, with at least one thread groove bordered by thread flanks to screwably receive the screw. A geometrically defined deformation of the external thread is arranged at a predetermined distance from the screw head to collide with at least one thread flank during the screwing of the screw into the mating thread element. | 09-11-2014 |
Patent application number | Description | Published |
20110192648 | Bearing Assembly for Downhole Motor - A downhole motor for drilling and servicing of wells has an elongated outer housing and an elongated mandrel rotatably disposed within the housing. A primary thrust bearing is disposed between the lower end of the housing and the mandrel, and transfers axial loads downward from the housing to the mandrel, and thence to the drill bit or other tool mounted on the lowermost end of the mandrel. The placement of the primary thrust bearing permits it to extend radially to the outer diameter of the housing. One preferred embodiment of the primary thrust bearing comprises bearing surfaces of polycrystalline diamond compact (“PDC”) material. | 08-11-2011 |
20130008641 | APPARATUS FOR SUPPORTING OR HANDLING TUBULARS - A method and apparatus for facilitating running or pulling tubulars from a well bore whereby the functions of a surface mounted traditional spider/elevator are replaced by an FMS which may also be remotely controlled. The FMS comprises a main body consisting of upper and lower plates assembled in a bolted and welded configuration, a slip assembly each said slip assembly comprising a slip back, a slip, one or more die inserts, a hydraulic or pneumatic cylinder and multiple sized die blocks to conform to the tubular OCTG diameter. | 01-10-2013 |
20130011221 | APPARATUS FOR HANDLING TUBULARS - A method and apparatus for facilitating running or pulling tubulars from a well bore whereby the manual operations or functions normally performed by a human are undertaken by the THD and may including remote control or manipulation. The THD comprises an elevator assembly (THD) with a main body consisting of upper and lower plates, a scissor assembly and multiple sized die blocks to conform to the tubular diameter. The THD can be used as a transfer elevator to position the tubular for engagement by the make-up assembly, can be outfitted to perform as a safety clamp or restraining device and also configured as a tubular stabbing arm as required by the operation. | 01-10-2013 |
20130092445 | Bearing Assembly for Downhole Motor - A downhole motor for drilling and servicing of wells has an elongated outer housing and an elongated mandrel rotatably disposed within the housing. A primary thrust bearing is disposed between the lower end of the housing and the mandrel, and transfers axial loads downward from the housing to the mandrel, and thence to the drill bit or other tool mounted on the lowermost end of the mandrel. The placement of the primary thrust bearing permits it to extend radially to the outer diameter of the housing. One preferred embodiment of the primary thrust bearing comprises bearing surfaces of polycrystalline diamond compact (“PDC”) material. | 04-18-2013 |
20130153239 | FLUID SAFETY VALVE - A bi-directional fluid safety valve for preventing spillage when filling tanks, vessels, fill lines, and or hoses for transportation of fluids in pipelines or tubulars with a tubular body with an external body and an internal bore having a fluid flow path from a first end to a second end, the first and second members concentrically disposed and moveable along a longitudinal axis within the tubular body; with means such as springs to longitudinally bias the first member toward the second member and means to longitudinally bias said second member toward said first member. Also provided are embodiments for connection of the tubular body to alternative connection systems. | 06-20-2013 |
20130292136 | TUBULAR RUNNING DEVICE AND METHOD - A method and apparatus for running tubular(s) into a well bore for use with a top drive or power swivel comprising a make-up assembly with inner and outer members, one of which has an array of ramped or inclined surface(s) while the other is an inner or outer cage with rolling support(s) with or without a central spindle and openings which may also be referred to as tubular engagement apparatus wherein relative movement of the members urges the rolling support(s) to protrude radially through the openings to engage a tubular internally or externally. Also provided is an elevator assembly with elevator links and transfer elevators to position tubular for engagement by the make-up assembly. | 11-07-2013 |
20140060854 | Hydraulic Disconnect Apparatus and Method of Use - A hydraulic disconnect apparatus is disclosed for disconnecting a pipe string or coiled tubing string from a bottom hole assembly for drilling, work over, or plug and abandonment of oil and gas wells. Disconnection is accomplished by pumping a circulation ball from surface through the pipe or coiled tubing string until it lands on a seat inside the apparatus. Fluid pressure is then applied to shift a piston assembly within the apparatus, thereby allowing a series of balls to retract. The upper and lower portions of the apparatus can then be separated by applying a tensile force to the upper portion. | 03-06-2014 |
20140144705 | Hydraulic Percussion Apparatus and Method of Use - A hydraulic percussive apparatus is disclosed for generating vibrating forces to a pipe string. The apparatus is attached to the pipe string a central bore through which fluid may be introduced into the apparatus. The apparatus has a tubular housing, an anvil surface with an irregularly profiled surface, and a rotor with an irregularly profiled hammer surface that is urged to move axially toward and away from the anvil surface. The rotor has a longitudinally extending fluid bore and a tangentially oriented fluid port in communication with the longitudinal fluid bore of the rotor. Fluid entering the rotor's fluid bore and exiting the rotor's tangentially oriented fluid port rotates the rotor, and thus the irregularly profiled hammer surface on the irregularly profiled anvil surface, moving the hammer surface toward and away from the anvil producing intermittent impact forces. | 05-29-2014 |
20140374170 | Underreamer Apparatus and Method - A wellbore underreamer has a tubular body, a central body cavity, and pivotally mounted blades in slots on the periphery of the tubular body. A translatable piston in the central body cavity is urged away from cam surfaces on the blades by a biasing spring. The piston has an orifice restricted fluid passage and translates in response to fluid pressure determined by the selected piston orifice and biasing spring. Fluid circulates through the piston fluid passage and fluid passages in the underreamer while piston movement is restrained by the spring. At a predetermined fluid pressure, the piston moves to engage the blade cam surfaces to pivotally extend the blades outward from the blade slots. The blades are held in the slots by a spring biased ball until they are extended by the piston. | 12-25-2014 |
20150226018 | Downhole Separation Apparatus and Method - A downhole separation apparatus for releasing a pipe string from a bottom hole assembly is disclosed. The apparatus has a tubular collet body, a tubular bottom sub, and a piston collet positioned within the collet body. The collet piston has a plurality of collet fingers threadedly engaging an internal profile of the bottom sub. Separation is accomplished by pumping a circulation ball through the pipe string until it lands on a ball seat inside the collet piston. Increasing fluid pressure then shifts the piston collet axially downward within the collet body thereby causing the collet fingers to collapse to disengage the bottom hole assembly from the pipe string. | 08-13-2015 |
20150354307 | Hydraulic Pipe String Vibrator For Reducing Well Bore Friction - A friction reduction apparatus (FRA) positioned onto a pipe string comprises a tubular housing, upper and lower mandrels having variously configured fluid flow passages and ports, a valve and a shifter. Fluid travelling through the apparatus causes the valve and shifter to reciprocate, repeatedly opening and closing flow passages. Each of these cycles creates a pulse in the fluid column creating vibrations that reduce friction in the pipe string. The FRA can be used in conjunction with a ball or dart activated tool positioned downhole from the FRA. | 12-10-2015 |
20160002985 | Impact Dampening Apparatus - An apparatus for dampening vibrations in a drill string has a tubular housing with an upper sub connected to a first end, having a threaded connection for engagement with the pipe or drillstring. A piston is positioned in the bore of the tubular housing and longitudinally movable in the bore; the dimensions of the piston and bore permit limited fluid flow around the piston. | 01-07-2016 |
20160017690 | Pressure Activated Cyclical Valve Apparatus and Method - A bypass tool has a piston movable within the bore of a central housing. A control slot on an exterior wall of the piston engages a slot pin in the housing. Longitudinal movement of the piston is downward, in response to fluid pressure exerted on a ball seated on a ball seat on the piston; and spring biased upward. The control slot and slot pin rotate the piston as it moves longitudinally between a first, upper position in which bypass ports in the housing are closed, and a second, lower position in which the bypass ports are open. An intermediate longitudinal position has the ports closed, and permits pressuring up on a ball to force it through the ball seat and reset the tool in the flow through position. The ball and/or ball seat may be of resilient material to permit passage of the ball through the seat. | 01-21-2016 |
20160024884 | Mechanically Activated Bypass Valve Apparatus and Method - A mechanically activated bypass valve apparatus for allowing fluid being pumped through the pipe or coiled tubing string to be bypassed around a tool string and into the wellbore. Activation of the bypass valve is accomplished by applying weight-on-bit to the apparatus to shear a set of shear screws, allowing the mandrel to move axially relative to the tubular housing. Lowering the pipe string and setting down weigh on bit misaligns fluid bypass ports in the mandrel and housing, thus forcing fluid to continue to flow through the bore of the tool and to the toolstring below the bypass tool. Picking up on the pipe string aligns corresponding ports in the mandrel and housing and allows fluid to flow from the bore of the tool to the wellbore annulus, thus bypassing other tools downhole of the apparatus. | 01-28-2016 |
20160108970 | Articulated Drive Shaft - An articulated drive shaft for a downhole mud motor is provided for transmission of torque and thrust loads from one member to another mainly comprising a driven member, ball members, a plurality of rollers, ball socket members and cylindrical driver members. The drive shaft is allowed to transmit torque and thrust loads through a given angular range between the axes of members on each end of the assembly. Several sealing means for retaining lubricants within the joints are provided while maintaining the mud motor's ability to articulate within borehole. A flow diverter may also be incorporated into the drive shaft to provide a means for fluid passage through the chive shaft. | 04-21-2016 |