Patents by Inventor Colin Longfield
Colin Longfield 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: 10246991Abstract: A technique facilitates detection of an event in a subterranean environment, e.g. in a wellbore. A tool may be deployed to a desired wellbore location or other subterranean location for actuation between operational positions. An acoustic system also is deployed to detect a unique acoustic signature associated with an event related to operation of the tool. Upon detection of the unique acoustic signature, the acoustic system transmits data to a surface location or other suitable location to indicate occurrence of the event. An example of such an event is transition of the tool between operational positions.Type: GrantFiled: March 18, 2014Date of Patent: April 2, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Colin Longfield, Dexter Myles Mootoo
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Patent number: 9535187Abstract: A method for characterizing one or more properties of a geological formation including brine, the method including inputting at least one first property of the geological formation into an equation of state (EOS) model, the EOS model accounting for a high temperature effect on the brine; solving the EOS model to determine at least one second property of the geological formation; and outputting the at least one second property to a display device.Type: GrantFiled: September 2, 2011Date of Patent: January 3, 2017Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Oliver C. Mullins, Richard E. Lewis, Colin Longfield, Chris Wilkinson, Paul George, Rashmi Bhavsar
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Patent number: 9316076Abstract: Methods and apparatus are disclosed. The problems of damage and failure of solenoid valves in high pressure high temperature environments and the problem of difficult repair of solenoid valves are addressed through reduction of the possibility of damage to the ball seat and/or seals and through a modular design to increase the ease of repair and adjustment in the event repair is needed.Type: GrantFiled: December 23, 2011Date of Patent: April 19, 2016Assignee: Schlumberger Technology CorporationInventors: Colin Longfield, Wei Wang, David Merlau, Brad Bailey, Sebastien Ives
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Patent number: 9194974Abstract: A method for characterizing one or more properties of a geological formation including brine and a dense vapor phase includes inputting at least one first property of the geological formation including resistivity of a vapor phase into a model including an equation of state (EOS) model, the model accounting for a high temperature effect on the dense vapor where that the dense vapor has a non-infinite resistivity. At least the EOS model is solves to provide data relating to at least one second property of the geological formation. The data relating to the at least one second property is output to a display device for visual inspection.Type: GrantFiled: September 2, 2011Date of Patent: November 24, 2015Assignee: Schlumberger Technology CorporationInventors: Indranil Roy, Chris Wilkinson, Partha Ganguly, Richard Lewis, Oliver Mullins, Colin Longfield
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Patent number: 9062514Abstract: A tool that is usable with a well includes a valve element, a mechanical operator, a pressure chamber and a regulator. The valve element has a first state and a second state. The mechanical operator responds to a predetermined signature in an annulus pressure relative to a baseline level of the annulus pressure to transition the valve element from the first state to the second state. The pressure chamber exerts a chamber pressure to bias the mechanical operator to transition from the second state to the first state. The baseline level is capable of varying over time, and the regulator regulates the chamber pressure based on the baseline level.Type: GrantFiled: August 16, 2013Date of Patent: June 23, 2015Assignee: Schlumberger Technology CorporationInventors: Joseph D. Scranton, Kamil Ifitkhar, Colin Longfield
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Patent number: 8978757Abstract: A remote actuation tool equipped with an intermediate volumetric mechanism for enhanced tool durability in high pressure differential downhole environments. Valve segments of the tool are actuated by power available due to a pressure differential between atmospheric and hydrostatic chambers of the tool. Yet, the intermediate volumetric mechanism, whether in the form of a discrete chamber or a hydraulic line system, minimizes stresses of the differential pressure on tool hydraulics. Thus, failure rates are substantially reduced. So, for example, the tool may be reliably employed in downhole environments which present differential pressures in excess of about 30,000 PSI.Type: GrantFiled: December 19, 2011Date of Patent: March 17, 2015Assignee: Schlumberger Technology CorporationInventors: Wei Wang, Colin Longfield, David Merlau, Sebastian Ives, Brad Bailey, Belinda D. Manning
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Publication number: 20140286129Abstract: A technique facilitates detection of an event in a subterranean environment, e.g. in a wellbore. A tool may be deployed to a desired wellbore location or other subterranean location for actuation between operational positions. An acoustic system also is deployed to detect a unique acoustic signature associated with an event related to operation of the tool. Upon detection of the unique acoustic signature, the acoustic system transmits data to a surface location or other suitable location to indicate occurrence of the event. An example of such an event is transition of the tool between operational positions.Type: ApplicationFiled: March 18, 2014Publication date: September 25, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Colin Longfield, Dexter Myles Mootoo
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Patent number: 8720539Abstract: An electrical power system comprising a support configured for interconnection within a subsurface drillstring, an electrical power unit coupled to the support, and a conductive link configured to distribute electrical power from the electrical power unit to at least one component coupled to the electrical power system within the subsurface drillstring.Type: GrantFiled: September 18, 2008Date of Patent: May 13, 2014Assignee: Schlumberger Technology CorporationInventors: Albert E. Patterson, II, Colin Longfield, Shardul J. Sarhad, Patrick J. Fisseler
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Patent number: 8695717Abstract: Conventional formation evaluation with dual inflatable packers includes the steps of pressurizing the packers so as to isolate an annular portion of the borehole wall, collecting one or more samples of formation fluid via the isolated portion of the borehole wall, and depressurizing the packers so as to permit movement of the mandrel within the borehole. A sampling method and apparatus that utilize one or more of the following to advantage is provided: restricting deformation of the packers during inflation using an annular bracing assembly; actively retracting the packers using ambient borehole pressure; and substantially centralizing the mandrel intermediate the packers so as to resist buckling of the mandrel.Type: GrantFiled: August 22, 2012Date of Patent: April 15, 2014Assignee: Schlumberger Technology CorporationInventors: William E. Brennan, III, Colin Longfield, Alexis Arzoumanidis, Allessandro Caccialupi
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Publication number: 20130327539Abstract: A tool that is usable with a well includes a valve element, a mechanical operator, a pressure chamber and a regulator. The valve element has a first state and a second state. The mechanical operator responds to a predetermined signature in an annulus pressure relative to a baseline level of the annulus pressure to transition the valve element from the first state to the second state. The pressure chamber exerts a chamber pressure to bias the mechanical operator to transition from the second state to the first state. The baseline level is capable of varying over time, and the regulator regulates the chamber pressure based on the baseline level.Type: ApplicationFiled: August 16, 2013Publication date: December 12, 2013Applicant: Schlumberger Technology CorporationInventors: Joseph D. Scranton, Kamil Iftikhar, Colin Longfield
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Publication number: 20130289961Abstract: Embodiments disclosed herein relate to reservoir characterization techniques and methods for accurately predicting scale tendencies of formation fluids, developed with the newly discovered phenomena that extreme downhole conditions affect the properties of reservoir fluids, including both the brine and dense hydrocarbon gas phases. In one aspect, there is disclosed a method for producing fluids from a geological formation. The method comprises inputting at least one property of a geological formation into an equation of state (EOS) model. The EOS model accounts for bound water, a high temperature effect on the brine and a high temperature effect on the dense gas phase. The EOS model is solved to determine a character of fluids contained in the geological formation, and inputting a production condition or a plurality of production conditions into the EOS model.Type: ApplicationFiled: September 20, 2011Publication date: October 31, 2013Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Ray, Richard E. Lewis, Oliver Clinton Mullins, Colin Longfield, Bruce MacKay, Paul George, Rashmi Bhanulal Bhavsar, Chris Wilkinson
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Publication number: 20130126191Abstract: Conventional formation evaluation with dual inflatable packers includes the steps of pressurizing the packers so as to isolate an annular portion of the borehole wall, collecting one or more samples of formation fluid via the isolated portion of the borehole wall, and depressurizing the packers so as to permit movement of the mandrel within the borehole. A sampling method and apparatus that utilize one or more of the following to advantage is provided: restricting deformation of the packers during inflation using an annular bracing assembly; actively retracting the packers using ambient borehole pressure; and substantially centralizing the mandrel intermediate the packers so as to resist buckling of the mandrel.Type: ApplicationFiled: August 22, 2012Publication date: May 23, 2013Inventors: William E. Brennan, III, Colin Longfield, Alexis Arzoumanidis, Allessandro Caccialupi
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Publication number: 20120186825Abstract: A remote actuation tool equipped with an intermediate volumetric mechanism for enhanced tool durability in high pressure differential downhole environments. Valve segments of the tool are actuated by power available due to a pressure differential between atmospheric and hydrostatic chambers of the tool. Yet, the intermediate volumetric mechanism, whether in the form of a discrete chamber or a hydraulic line system, minimizes stresses of the differential pressure on tool hydraulics. Thus, failure rates are substantially reduced. So, for example, the tool may be reliably employed in downhole environments which present differential pressures in excess of about 30,000 PSI.Type: ApplicationFiled: December 19, 2011Publication date: July 26, 2012Inventors: Wei Wang, Colin Longfield, David Merlau, Sebastian Ives, Brad Bailey, Belinda D. Manning
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Patent number: 8220533Abstract: According to one or more aspects of the present disclosure, a piezoelectric pump may include a hydraulic fluid path between a low pressure source and a high pressure tool port; a fluid disposed in the hydraulic fluid path; a piston in communication with the fluid; and a piezoelectric material connected to the piston to pump the fluid through the high pressure tool port.Type: GrantFiled: July 17, 2009Date of Patent: July 17, 2012Assignee: Schlumberger Technology CorporationInventors: Colin Longfield, David Wei Wang, Gary L. Rytlewski
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Publication number: 20120065951Abstract: A method for characterizing one or more properties of a geological formation including brine and a dense vapor phase includes inputting at least one first property of the geological formation including resistivity of a vapor phase into a model including an equation of state (EOS) model, the model accounting for a high temperature effect on the dense vapor where that the dense vapor has a non-infinite resistivity. At least the EOS model is solves to provide data relating to at least one second property of the geological formation. The data relating to the at least one second property is output to a display device for visual inspection.Type: ApplicationFiled: September 2, 2011Publication date: March 15, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Chris Wilkinson, Partha Ganguly, Richard Lewis, Oliver Mullins, Colin Longfield
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Publication number: 20120059640Abstract: One or more computer-readable media include computer-executable instructions to instruct a computing system to receive input as to physical characteristics of a resource recovery system and a resource reservoir; simulate fluid thermodynamics of the system and the reservoir; and output information as to phase composition, for example, in at least one dense phase affected by the resource recovery system. Various other apparatuses, systems, methods, etc., are also disclosed.Type: ApplicationFiled: August 31, 2011Publication date: March 8, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Chris Wilkinson, Colin Longfield, Oliver C. Mullins, Richard E. Lewis
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Publication number: 20120059636Abstract: A method for characterizing one or more properties of a geological formation including brine, the method including inputting at least one first property of the geological formation into an equation of state (EOS) model, the EOS model accounting for a high temperature effect on the brine; solving the EOS model to determine at least one second property of the geological formation; and outputting the at least one second property to a display device.Type: ApplicationFiled: September 2, 2011Publication date: March 8, 2012Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Indranil Roy, Oliver C. Mullins, Richard E. Lewis, Colin Longfield, Chris Wilkinson, Paul George, Rashmi Bhavsar
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Publication number: 20110083859Abstract: A tool that is usable with a well includes a valve element, a mechanical operator, a pressure chamber and a regulator. The valve element has a first state and a second state. The mechanical operator responds to a predetermined signature in an annulus pressure relative to a baseline level of the annulus pressure to transition the valve element from the first state to the second state. The pressure chamber exerts a chamber pressure to bias the mechanical operator to transition from the second state to the first state. The baseline level is capable of varying over time, and the regulator regulates the chamber pressure based on the baseline level.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Joseph D. Scranton, Kamil Iftikhar, Colin Longfield
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Publication number: 20100300677Abstract: An electrical power system comprising a support configured for interconnection within a subsurface drillstring, an electrical power unit coupled to the support, and a conductive link configured to distribute electrical power from the electrical power unit to at least one component coupled to the electrical power system within the subsurface drillstring.Type: ApplicationFiled: September 18, 2008Publication date: December 2, 2010Inventors: Albert E. Patterson, III, Colin Longfield, Shardul Sarhad, Patrick J. Fisseler
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Patent number: 7841406Abstract: A fluid sampling system retrieves a formation fluid sample from a formation surrounding a wellbore extending along a wellbore axis, wherein the formation has a virgin fluid and a contaminated fluid therein. The system includes a sample inlet, a first guard inlet positioned adjacent to the sample inlet and spaced from the sample inlet in a first direction along the wellbore axis, and a second guard inlet positioned adjacent to the sample inlet and spaced from the sample inlet in a second, opposite direction along the wellbore axis. At least one cleanup flowline is fluidly connected to the first and second guard inlets for passing contaminated fluid, and an evaluation flowline is fluidly connected to the sample inlet for collecting virgin fluid.Type: GrantFiled: September 11, 2009Date of Patent: November 30, 2010Assignee: Schlumberger Technology CorporationInventors: Alexander F. Zazovsky, Colin Longfield, Julian J. Pop, Thomas H. Zimmerman, John D. Sherwood, Keith A. Burgess