Patents Assigned to National Oilwell Norway AS
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Patent number: 9422785Abstract: An internal blow out preventer for use in a drill string, comprising a housing having an outer valve closure element and where the outer valve closure element is configured to be moved between an open and a closed position, wherein the outer valve closure element is provided with an inner valve closure element that is configured to be moved between an open and a closed position inside the outer valve closure element.Type: GrantFiled: December 23, 2014Date of Patent: August 23, 2016Assignee: National Oilwell Norway ASInventor: Slawomir Kukielka
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Publication number: 20150108377Abstract: An internal blow out preventer for use in a drill string, comprising a housing having an outer valve closure element and where the outer valve closure element is configured to be moved between an open and a closed position, wherein the outer valve closure element is provided with an inner valve closure element that is configured to be moved between an open and a closed position inside the outer valve closure element.Type: ApplicationFiled: December 23, 2014Publication date: April 23, 2015Applicant: National Oilwell Norway ASInventor: Slawomir Kukielka
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Patent number: 8950430Abstract: An internal blow out preventer for use in a drill string, comprising a housing having an outer valve closure element and where the outer valve closure element is configured to be moved between an open and a closed position, wherein the outer valve closure element is provided with an inner valve closure element that is configured to be moved between an open and a closed position inside the outer valve closure element.Type: GrantFiled: January 10, 2011Date of Patent: February 10, 2015Assignee: National Oilwell Norway ASInventor: Slawomir Kukielka
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Patent number: 8844688Abstract: A mouse hole damper device positioned at the bottom portion of a mouse hole pipe, the mouse hole damper being arranged to dampen an impact from an object falling in the mouse hole pipe, and the mouse hole damper including a material which has been worked into forming walls around elongated openings, and the material being arranged in such a way that the openings are substantially parallel to the longitudinal axis of the mouse hole pipe.Type: GrantFiled: October 26, 2009Date of Patent: September 30, 2014Assignee: National Oilwell Norway ASInventor: Jan Erik Pedersen
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Patent number: 8733435Abstract: A collector device for collecting drilling fluid from a pipe during disconnecting of the pipe from a pipe string comprises a collecting space. At least a portion of the collecting space is provided with a porous material. In an active position, the collector device is configured to surround a pipe coupling of the pipe string.Type: GrantFiled: June 11, 2008Date of Patent: May 27, 2014Assignee: National Oilwell Norway ASInventor: Jonathan Garrick Webb
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Patent number: 8601874Abstract: A method for detection of a leak in a fluid affected component of a piston machine includes obtaining a vibration signal from a vibration sensor disposed proximate to at least one valve block of the piston machine. The vibration signal includes vibration generated by valves in the valve block. The method further includes presenting the obtained vibration signal for analysis by at least one of a human or a computer, analyzing the obtained vibration signal with respect to revealing a malfunction related to a fluid affected component of the piston machine, and selecting the obtained vibration signal emitted from the valve block during the closed periods of the valves for presentation.Type: GrantFiled: April 21, 2008Date of Patent: December 10, 2013Assignee: National Oilwell Norway ASInventor: Age Kyllingstad
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Patent number: 8596857Abstract: A means for securing a proper mixing of a particle shaped material, such as powder, into a liquid by supplying shear forces in a mixing zone, the shear forces being produced by pumping liquid through a restriction (22), such as a nozzle (27,29) in a pipe at a high pressure. A plurality of nozzles (22) is used, placed in such position with respect to each other that a jet from at least one of the nozzles (22) hits the jet from at least a second nozzle (22) in one single theoretical point downstream of the nozzles (22).Type: GrantFiled: October 9, 2008Date of Patent: December 3, 2013Assignee: National Oilwell Norway ASInventor: Yngve Bastesen
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Patent number: 8534387Abstract: A drawworks device on a drill floor includes an upper pulley assembly connected to a heave-compensated or fixed mounting. In addition, the drawworks device includes a main block connected to a pipe mount. The pipe mount is laterally movable in at least one direction relative to the drilling center of the drill floor. The pulley assembly is pivotal about a horizontal first axis oriented perpendicular to the direction of lateral movement of the pipe mount.Type: GrantFiled: June 7, 2007Date of Patent: September 17, 2013Assignee: National Oilwell Norway ASInventor: Paal Taraldrud
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Patent number: 8416093Abstract: A machine includes at least one piston and a pump shaft. A method for detecting a leak in the machine includes receiving a vibration signal from a vibration sensor disposed on at least one of an upstream pipe and a downstream pipe of the machine, receiving a rotational speed signal and an angular shaft position signal from a speed and position sensor disposed on the machine, calculating a rotational speed and an angular shaft position of the pump shaft, calculating at least one complex harmonic Fourier amplitude of the received vibration signal, low pass filtering the at least one complex harmonic Fourier amplitude, calculating a deviation amplitude as a magnitude of a complex difference between the filtered amplitude and a base amplitude, and monitoring the deviation amplitude to detect a leakage.Type: GrantFiled: April 18, 2008Date of Patent: April 9, 2013Assignee: National Oilwell Norway ASInventor: Age Kyllingstad
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Patent number: 8412472Abstract: A method for detection of a fluid leak related to at least one piston machine (1), where the method includes: —attaching a pressure sensor (18, 24) to at least a pressure side of the at least one piston machine (1); —measuring the pressure on the pressure side of the at least one piston machine (1); —attaching a transmitter (28) to the at least one piston machine (1), said transmitter (28) rendering a signal for calculating the rotational speed of the at least one piston machine (1); —calculating the speed of the at least one piston machine (1); —calculating the sum of nominal flow rates from all piston machines (1); —calculating a flow rate compensation factor; —calculating a normalized pressure (42) to be equal to the discharge pressure multiplied by the said compensation factor for the flow rate; and —monitoring the normalized pressure (42) to detect a leakage.Type: GrantFiled: July 25, 2008Date of Patent: April 2, 2013Assignee: National Oilwell Norway ASInventor: Age Kyllingstad
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Publication number: 20120305102Abstract: An internal blow out preventer for use in a drill string, comprising a housing having an outer valve closure element and where the outer valve closure element is configured to be moved between an open and a closed position, wherein the outer valve closure element is provided with an inner valve closure element that is configured to be moved between an open and a closed position inside the outer valve closure element.Type: ApplicationFiled: January 10, 2011Publication date: December 6, 2012Applicant: NATIONAL OILWELL NORWAY ASInventor: Slawomir Kukielka
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Publication number: 20120217016Abstract: An apparatus for tensioning a marine riser comprising a support for a number of actuators, where the support is connected to a vessel's structure, and where each actuator is connected to the support and to a marine riser, and where elements of the riser tensioner apparatus are enclosed.Type: ApplicationFiled: September 13, 2010Publication date: August 30, 2012Applicant: National Oilwell Norway ASInventors: Christian B. Von Der Ohe, David Bengt Johan Ankargren
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Patent number: 8251148Abstract: A system for active heave compensation of the running block in a drilling derrick on board a floating off shore platform comprises a double-acting hydraulic cylinder (1) which is connected to a hydraulic power unit (3) for the supply of hydraulic pressure fluid to the hydraulic cylinder (1), a control unit (6) which regulates the supply conditions of the pressure fluid to the at any time active side (A, B) of the hydraulic cylinder, the hydraulic fluid concurrently being permitted to leave the passive side (B, A) of the hydraulic cylinder. The hydraulic power unit (3) comprises a pump unit (4) which via respective conduits (9a, 9b) are directly connected to the two sides (A, B) of the hydraulic cylinder (1) in order to form a generally closed hydraulic system therewith. The hydraulic fluid delivered by the pump unit (4) to the conduits (9a, 9b) to the active cylinder side is drawn from the conduit (9b, 9a) to the passive cylinder side, while the control unit regulates the output of the pump unit.Type: GrantFiled: May 31, 2007Date of Patent: August 28, 2012Assignee: National Oilwell Norway ASInventor: Christian von der Ohe
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Patent number: 8245773Abstract: Disclosed is a device for centralizing an elongated body, such as a pipe, in the opening of a mousehole machine along the machine's center axis. The device includes two centralizing bows supported within the opening and adapted for rotation about a common, mainly horizontal axis of rotation that extends across the opening of the mousehole machine, the bows being located on radially-opposite sides of the axis of rotation. Upon rotation of the bows, the pipe is moved by contact with a first of the bows toward the center axis until the second of the bows contacts the pipe.Type: GrantFiled: August 24, 2007Date of Patent: August 21, 2012Assignee: National Oilwell Norway ASInventor: Jonathan Garrick Webb
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Publication number: 20110156921Abstract: A machine includes at least one piston and a pump shaft. A method for detecting a leak in the machine includes receiving a vibration signal from a vibration sensor disposed on at least one of an upstream pipe and a downstream pipe of the machine, receiving a rotational speed signal and an angular shaft position signal from a speed and position sensor disposed on the machine, calculating a rotational speed and an angular shaft position of the pump shaft, calculating at least one complex harmonic Fourier amplitude of the received vibration signal, low pass filtering the at least one complex harmonic Fourier amplitude, calculating a deviation amplitude as a magnitude of a complex difference between the filtered amplitude and a base amplitude, and monitoring the deviation amplitude to detect a leakage.Type: ApplicationFiled: April 18, 2008Publication date: June 30, 2011Applicant: National Oilwell Norway ASInventor: Age Kyllingstad
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Publication number: 20110046902Abstract: A method for detection of a fluid leak related to at least one piston machine (1), where the method includes: —attaching a pressure sensor (18, 24) to at least a pressure side of the at least one piston machine (1); —measuring the pressure on the pressure side of the at least one piston machine (1); —attaching a transmitter (28) to the at least one piston machine (1), said transmitter (28) rendering a signal for calculating the rotational speed of the at least one piston machine (1); —calculating the speed of the at least one piston machine (1); —calculating the sum of nominal flow rates from all piston machines (1); —calculating a flow rate compensation factor; —calculating a normalized pressure (42) to be equal to the discharge pressure multiplied by the said compensation factor for the flow rate; and —monitoring the normalized pressure (42) to detect a leakage.Type: ApplicationFiled: July 25, 2008Publication date: February 24, 2011Applicant: National Oilwell Norway ASInventor: Age Kyllingstad
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Publication number: 20100303591Abstract: The invention relates to a sack cutting means (10) for offshore emptying of content from a package, comprising a means (11) for cutting up the package, means (21) for separating the package from its content and means (20) for removing the emptied package from the cutting means, said means (21) for separating the content at least from the package comprising means (13) for ripping the package open, one or more transporting means and a rotating drum (21) provided with openings through which the content separated from the package is allowed to leave the drum (18). Further, the sack cutting screw (11) is separated from the drum (18) and that below both the sack cutting screw (11) and the drum (17), a means (20) for collecting and transporting away the content of the sacks is arranged, said means being configured in such way that the content of the package is removed at one end, while the waste package is removed at the other end of said sack cutting means (10).Type: ApplicationFiled: December 10, 2008Publication date: December 2, 2010Applicant: National Oilwell Norway ASInventors: Eirik Mongstad, Kurt Allan Rasmussen, Erling Ekrene, Thomas Klemetsen
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Patent number: 7830749Abstract: A method of filtering out pressure noise generated by one or more piston pumps, where each pump is connected to a common downstream piping system, and where the discharge pressure is measured by a pressure sensitive gauge, wherein the instantaneous angular position(s) of the pump(s)' crankshaft or actuating cam is/are measured simultaneously with the discharge pressure and used as fundamental variables in an adaptive mathematical noise model.Type: GrantFiled: June 20, 2005Date of Patent: November 9, 2010Assignee: National Oilwell Norway ASInventor: Åge Kyllingstad
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Publication number: 20100206562Abstract: A centralizing device (1) for an elongated body (16) which is located in a mousehole machine (2), the centralizing device (1) being at the upper portion of the mousehole machine (2), and the centralizing device (1) being supported and rotatable around a substantially horizontal axis of rotation (22) extending through the opening (10) of the mousehole machine, and the centralizing device (1) including two centralizing bows (24) located on radially opposite sides of the axis of rotation (22).Type: ApplicationFiled: August 24, 2007Publication date: August 19, 2010Applicant: NATIONAL OILWELL NORWAY ASInventor: Jonathan Garrick Webb
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Publication number: 20100200216Abstract: A collector device (1) for collecting drilling fluid from a pipe (30) during disconnecting of the pipe (30) from a pipe string (8), the collector (1) in its active position surrounding the pipe coupling (10) of the pipe string (8), and where the whole or parts of the collecting space (2) of the collector (1) is provided with a porous material (4).Type: ApplicationFiled: June 11, 2008Publication date: August 12, 2010Applicant: National Oilwell Norway ASInventor: Jonathan Garrick Webb