Patents by Inventor Alan Mackenzie
Alan Mackenzie has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10830011Abstract: A selective downhole actuator comprising at least a first actuator position, a second actuator position and a third actuator position. The selective downhole actuator is reconfigurable between the first actuator position and the second actuator position. The selective actuator is selectively reconfigurable to the third actuator position by varying an operating parameter during a transition of the selective downhole actuator between the first and second actuator positions.Type: GrantFiled: February 19, 2016Date of Patent: November 10, 2020Assignee: NOV Downhole Eurasia LimitedInventors: Alan MacKenzie, Alagappan Viswanathan, Alastair Henry Walter MacFarlane
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Publication number: 20180238131Abstract: A selective downhole actuator comprising at least a first actuator position, a second actuator position and a third actuator position. The selective downhole actuator is reconfigurable between the first actuator position and the second actuator position. The selective actuator is selectively reconfigurable to the third actuator position by varying an operating parameter during a transition of the selective downhole actuator between the first and second actuator positions.Type: ApplicationFiled: February 19, 2016Publication date: August 23, 2018Applicant: NOV DOWNHOLE EURASIA LIMITEDInventors: Alan MACKENZIE, Alagappan VISWANATHAN, Alastair Henry Walter MACFARLANE
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Patent number: 9482066Abstract: An apparatus for use in controlling first and second downhole tools includes a first cyclical indexing mechanism associated with a first downhole tool, and a second cyclical indexing mechanism associated with a second downhole tool, wherein the first indexing mechanism defines at least three sequential indexing positions within a cycle and the second indexing mechanism defines at least two sequential indexing positions within a cycle. The apparatus includes at least one actuator for actuating the first and second indexing mechanisms in response to a common stimulus to cause said first and second indexing mechanisms to advance between respective indexing positions so as to permit co-ordination of the operational states of the associated first and second downhole tools. The apparatus may be used for controlling first and second under reamers or for controlling an under reamer and a corresponding stabilizer.Type: GrantFiled: January 30, 2013Date of Patent: November 1, 2016Assignee: NOV DOWNHOLE EURASIA LIMITEDInventors: Alan MacKenzie, Matthew Shaw
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Patent number: 9359866Abstract: A resettable downhole tool actuator comprises a housing, a collet slidable within the housing and defining a seating with which a ball is engageable, in use, the collet being mounted upon a moveable support including a piston and arranged such that, when the bail engages the seating, fluid flow through an axially extending passage provided in the support is restricted, the housing including an increased diameter region arranged such that, when the seating is aligned with the increased diameter region, outward deflection of the collet permits the ball to pass through the seating and through the axially extending passage.Type: GrantFiled: October 9, 2012Date of Patent: June 7, 2016Assignee: Nov Downhole Eurasia LimitedInventor: Alan MacKenzie
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Patent number: 8973680Abstract: A downhole tool comprises a body, an extendable cutting member operable to cooperate with a hydraulically actuated cam member, and a cam member lock. The lock is configurable to be activated downhole to restrict movement of the cam member relative to the body and prevent extension of the cutting member.Type: GrantFiled: August 4, 2011Date of Patent: March 10, 2015Assignee: Nov Downhole Eurasia LimitedInventor: Alan MacKenzie
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Patent number: 8905158Abstract: An underreamer tool for use in a wellbore of an oil or gas well and a method of actuation. In an embodiment, the underreamer tool has body having a longitudinal axis and a fluid conduit, a tool element and an actuation device configured to urge the tool element relative to the body from a first configuration into a second configuration. In this embodiment, a portion of the tool has a curved actuation surface and as the tool element is urged across the curved actuation surface, the tool element is moved radially with respect to the body of the tool. Typically, the actuation device may include a piston driven by pressure of fluid circulated through the fluid flow conduit.Type: GrantFiled: February 11, 2010Date of Patent: December 9, 2014Assignee: Paradigm Oilfield Services LimitedInventors: Darren Ritchie, Krzysztof Machocki, Alan Mackenzie
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Publication number: 20140246190Abstract: A resettable downhole tool actuator comprises a housing, a collet slidable within the housing and defining a seating with which a ball is engageable, in use, the collet being mounted upon a moveable support including a piston and arranged such that, when the bail engages the seating, fluid flow through an axially extending passage provided in the support is restricted, the housing including an increased diameter region arranged such that, when the seating is aligned with the increased diameter region, outward deflection of the collet permits the ball to pass through the seating and through the axially extending passage.Type: ApplicationFiled: October 9, 2012Publication date: September 4, 2014Applicant: NOV DOWNHOLE EURASIA LIMITEDInventor: Alan MacKenzie
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Publication number: 20120037426Abstract: The present invention relates to downhole tools, and in particular an underreamer tool for use in a wellbore of an oil or gas well and a method of actuation. In an embodiment, the underreamer tool has body having a longitudinal axis and a fluid conduit, a tool element and an actuation device configured to urge the tool element relative to the body from a first configuration into a second configuration. In this embodiment, a portion of the tool has a curved actuation surface and as the tool element is urged across the curved actuation surface, the tool element is moved radially with respect to the body of the tool. Typically, the actuation device may include a piston driven by pressure of fluid circulated through the fluid flow conduit.Type: ApplicationFiled: February 11, 2010Publication date: February 16, 2012Applicant: Paradigm Oilfield Services LimitedInventors: Darren Ritchie, Krzysztof Machocki, Alan Mackenzie
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Publication number: 20120031673Abstract: A downhole tool comprises a body, an extendable cutting member operable to cooperate with a hydraulically actuated cam member, and a cam member lock. The lock is configurable to be activated downhole to restrict movement of the cam member relative to the body and prevent extension of the cutting member.Type: ApplicationFiled: August 4, 2011Publication date: February 9, 2012Applicant: NOV DOWNHOLE EURASIA LIMITEDInventor: Alan MacKenzie
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Patent number: 8028763Abstract: The present invention relates to downhole tools, and in particular an underreamer tool for use in a wellbore of an oil or gas well and a method of actuation. In an embodiment, the underreamer tool has body having a longitudinal axis and a fluid conduit, a tool element and an actuation device configured to urge the tool element relative to the body from a first configuration into a second configuration. In this embodiment, a portion of the tool has a curved actuation surface and the tool element is urged across the curved actuation surface the tool element is moved radially with respect to the body of the tool. Typically, the actuation device may include a piston driven by pressure of fluid circulated through the fluid flow conduit.Type: GrantFiled: February 19, 2009Date of Patent: October 4, 2011Assignee: Paradigm Oilfield Services LimitedInventor: Alan Mackenzie
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Publication number: 20100200298Abstract: The present invention relates to downhole tools, and in particular an underreamer tool for use in a wellbore of an oil or gas well and a method of actuation. In an embodiment, the underreamer tool has body having a longitudinal axis and a fluid conduit, a tool element and an actuation device configured to urge the tool element relative to the body from a first configuration into a second configuration. In this embodiment, a portion of the tool has a curved actuation surface and the tool element is urged across the curved actuation surface the tool element is moved radially with respect to the body of the tool. Typically, the actuation device may include a piston driven by pressure of fluid circulated through the fluid flow conduit.Type: ApplicationFiled: February 19, 2009Publication date: August 12, 2010Inventor: Alan Mackenzie
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Patent number: 7654332Abstract: Radially expanding a tubular such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. One or more anchoring devices, which may be radially offset, are used to substantially prevent the tubular from moving during expansion thereof.Type: GrantFiled: July 22, 2008Date of Patent: February 2, 2010Assignee: E2 Tech LimitedInventor: Alan Mackenzie
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Publication number: 20080308267Abstract: Radially expanding a tubular such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. One or more anchoring devices, which may be radially offset, are used to substantially prevent the tubular from moving during expansion thereof.Type: ApplicationFiled: July 22, 2008Publication date: December 18, 2008Inventor: Alan MacKenzie
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Patent number: 7401650Abstract: Radially expanding a tubular such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. One or more anchoring devices, which may be radially offset, are used to substantially prevent the tubular from moving during expansion thereof.Type: GrantFiled: March 6, 2007Date of Patent: July 22, 2008Assignee: E2 Tech LimitedInventor: Alan MacKenzie
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Publication number: 20070199719Abstract: Radially expanding a tubular such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. One or more anchoring devices, which may be radially offset, are used to substantially prevent the tubular from moving during expansion thereof.Type: ApplicationFiled: March 6, 2007Publication date: August 30, 2007Inventor: Alan MacKenzie
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Patent number: 7243722Abstract: Apparatus (9) for radially expanding an expandable member, the apparatus including a plurality of radially moveable fingers (22). The radially moveable fingers (22) can move between two positions; in a first position, the moveable fingers (22) are radially extended to a form a cone to facilitate radial expansion of the expandable member; in the second position, one or more of the radially movable fingers (22) can move radially inward so that restrictions in the path of the apparatus can be by-passed.Type: GrantFiled: January 28, 2002Date of Patent: July 17, 2007Assignee: e2Tech LimitedInventors: Peter Oosterling, Alan MacKenzie
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Patent number: 7185701Abstract: Apparatus and methods for radially expanding a tubular such as a drill pipe, liner, casing or the like. The apparatus includes at least one driver device such as a piston that is typically fluid-actuated, and an expander device is attached to the or each driver device. Actuation of the or each driver device causes movement of the expander device to expand the tubular. In certain embodiments, one or more anchoring devices are used to substantially prevent the tubular from moving during expansion thereof.Type: GrantFiled: April 19, 2002Date of Patent: March 6, 2007Assignee: E 2 Tech LimitedInventor: Alan Mackenzie
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Patent number: 7073583Abstract: Aspects of the invention relate to apparatus and methods for remedial and repair operations downhole. Certain embodiments of apparatus include a lightweight expandable member (22) that can be radially expanded to increased its inner and outer diameters using an inflatable element (34). The lightweight member (22) can be used to repair a fautly safety vavle flapper (12) for example. The invention also relates to lateral tubular adapter apparatus and a method of hanging a lateral from a cased borehole.Type: GrantFiled: December 21, 2001Date of Patent: July 11, 2006Assignee: e2Tech LimitedInventors: David Andrew Anderton, Christopher Callaway, Alan Mackenzie
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Publication number: 20050173129Abstract: Apparatus (9) for radially expanding an expandable member, the apparatus including a plurality of radially moveable fingers (22). The radially moveable fingers (22) can move between two positions; in a first position, the moveable fingers (22) are radially extended to a form a cone to facilitate radial expansion of the expandable member; in the second position, one or more of the radially movable fingers (22) can move radially inward so that restrictions in the path of the apparatus can be by-passed.Type: ApplicationFiled: January 28, 2002Publication date: August 11, 2005Inventors: Peter Oosterling, Alan MacKenzie
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Publication number: 20040149442Abstract: Radially expanding a tubular (12) such as a liner or casing, especially in a downward direction. The apparatus includes at least one driver device (20, 22) such as a piston that is typically fluid-actuated, and an expander device (14) is attached to the or each driver device (20, 22). Actuation of the or each driver device (20, 22) causes movement of the expander device (14) to expand the tubular (12). One or more anchoring devices (36, 40), which may be radially offset, are used to substantially prevent the tubular (12) from moving during expansion thereof.Type: ApplicationFiled: March 22, 2004Publication date: August 5, 2004Inventor: Alan Mackenzie