Patents by Inventor Steven E. Buchanan
Steven E. Buchanan 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: 10316654Abstract: A coring method includes disposing a coring tool in a borehole adjacent a subterranean formation to be sampled. The method further includes determining a property of the formation and selecting a coring tool operational mode based on the property of the formation. The method also includes obtaining a sample from the formation using the coring tool operational mode. A type of coring shaft also may be selected based on the property of the formation.Type: GrantFiled: August 4, 2016Date of Patent: June 11, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Barry Moon, Vincent Jeffrey Pisio, Steven E. Buchanan
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Patent number: 10301937Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is disposed inside the coring shaft and having a flange coupled to the thrust ring to space the static sleeve from the coring shaft to form a drilling fluid passageway between the coring shaft and the static sleeve. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.Type: GrantFiled: September 19, 2016Date of Patent: May 28, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Steven E. Buchanan, Lennox E. Reid, Jr., Rachel Lavaure
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Publication number: 20170002654Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is disposed inside the coring shaft and having a flange coupled to the thrust ring to space the static sleeve from the coring shaft to form a drilling fluid passageway between the coring shaft and the static sleeve. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.Type: ApplicationFiled: September 19, 2016Publication date: January 5, 2017Inventors: Steven E. Buchanan, Lennox E. Reid, JR., Rachel Lavaure
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Publication number: 20160341036Abstract: A coring method includes disposing a coring tool in a borehole adjacent a subterranean formation to be sampled. The method further includes determining a property of the formation and selecting a coring tool operational mode based on the property of the formation. The method also includes obtaining a sample from the formation using the coring tool operational mode. A type of coring shaft also may be selected based on the property of the formation.Type: ApplicationFiled: August 4, 2016Publication date: November 24, 2016Inventors: Barry Moon, Vincent Jeffrey Pisio, Steven E. Buchanan
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Patent number: 9447683Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is disposed inside the coring shaft and having a flange coupled to the thrust ring to space the static sleeve from the coring shaft to form a drilling fluid passageway between the coring shaft and the static sleeve. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.Type: GrantFiled: June 16, 2014Date of Patent: September 20, 2016Assignee: Schlumberger Technology CorporationInventors: Steven E. Buchanan, Lennox E. Reid, Jr., Rachel Lavaure
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Patent number: 9410423Abstract: Disposing a coring tool in a borehole adjacent a subterranean formation to be sampled. Determining a property of the formation and selecting a coring tool operational mode based on the property of the formation. Obtaining a sample from the formation using the coring tool operational mode. A type of coring shaft also may be selected based on the property of the formation.Type: GrantFiled: November 25, 2013Date of Patent: August 9, 2016Assignee: Schlumberger Technology CorporationInventors: Barry Moon, Vincent Jeffrey Pisio, Steven E. Buchanan
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Patent number: 9097102Abstract: A downhole coring tool conveyable within a borehole extending into a subterranean formation, wherein the downhole coring tool comprises a housing, a hollow coring bit extendable from the housing, a first motor operable to rotate the coring bit, and a second motor operable to extend the coring bit into the subterranean formation through a sidewall of the borehole in a direction not substantially parallel to a longitudinal axis of the borehole proximate the downhole coring tool. A static sleeve disposed in but rotationally independent of the coring bit receives a portion of a core sample of the formation resulting from extension of the coring bit into the formation. The static sleeve comprises a protrusion extending radially inward toward the core sample sufficiently to mark the core sample.Type: GrantFiled: September 28, 2012Date of Patent: August 4, 2015Assignee: Schlumberger Technology CorporationInventors: Richard Dan Ward, Mark Milkovisch, Warren Askew, Gokhan Erol, Bo Yang, Steven E. Buchanan, Jean-Michel Hache, Adam Zygmunt Cygan
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Publication number: 20140291034Abstract: A coring bit assembly for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation. The coring bit assembly includes a coring shaft and a thrust ring coupled to an end of the coring shaft. A static sleeve is disposed inside the coring shaft and having a flange coupled to the thrust ring to space the static sleeve from the coring shaft to form a drilling fluid passageway between the coring shaft and the static sleeve. An axial fluid pump is disposed on the coring shaft to engage with the static sleeve to drive drilling fluid through the drilling fluid passageway formation.Type: ApplicationFiled: June 16, 2014Publication date: October 2, 2014Inventors: Steven E. Buchanan, Lennox E. Reid, JR., Rachel Lavaure
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Patent number: 8752652Abstract: An apparatus for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation, the apparatus comprising a coring bit assembly, a first motor operatively coupled to the coring bit assembly via a gear box to rotationally drive the coring bit assembly, and a second motor to drive the coring bit assembly into the formation while the coring bit assembly is rotated by the first motor, wherein the coring bit assembly comprises a feature to permit the coring bit assembly to be broken when the coring bit assembly becomes stuck in the formation.Type: GrantFiled: September 12, 2011Date of Patent: June 17, 2014Assignee: Schlumberger Technology CorporationInventors: Steven E. Buchanan, Lennox E. Reid, Jr., Rachel Agnes Lavaure
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Publication number: 20140076634Abstract: A coring method includes disposing a coring tool in a borehole adjacent a subterranean formation to be sampled. The method further includes determining a property of the formation and selecting a coring tool operational mode based on the property of the formation. The method also includes obtaining a sample from the formation using the coring tool operational mode. A type of coring shaft also may be selected based on the property of the formation.Type: ApplicationFiled: November 25, 2013Publication date: March 20, 2014Applicant: Schlumberger Technology CorporationInventors: Barry Moon, Vincent Jeffrey Pisio, Steven E. Buchanan
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Patent number: 8613330Abstract: An example coring tool includes a cylindrical body having a leading edge to contact a substance and a cavity defined at least in part by an inner surface of the cylindrical body. The inner surface is to engage and retain a sample from the substance with a plurality of raised features. The raised features are shaped so that at least one of the raised features or an exterior surface of a sample in the cavity deforms to increase a force required to remove the sample from the cavity.Type: GrantFiled: March 29, 2012Date of Patent: December 24, 2013Assignee: Schlumberger Technology CorporationInventors: Barry Moon, Vincent Jeffrey Pisio, Steven E. Buchanan
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Patent number: 8550184Abstract: Methods comprising: lowering a downhole tool into a wellbore extending into a subterranean formation, wherein the downhole tool comprises a coring tool and a measurement tool; performing a measurement regarding the formation using the measurement tool; determining a section of interest within the formation relative to an axis of the coring tool based on the measurement; orienting a coring bit of the coring tool relative to the section of interest; and extending the oriented coring bit into the formation.Type: GrantFiled: May 7, 2010Date of Patent: October 8, 2013Assignee: Schlumberger Technology CorporationInventors: Steven E. Buchanan, Julian J. Pop, Carsten Sonne, Gokhan Erol
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Publication number: 20130081879Abstract: A downhole coring tool conveyable within a borehole extending into a subterranean formation, wherein the downhole coring tool comprises a housing, a hollow coring bit extendable from the housing, a first motor operable to rotate the coring bit, and a second motor operable to extend the coring bit into the subterranean formation through a sidewall of the borehole in a direction not substantially parallel to a longitudinal axis of the borehole proximate the downhole coring tool. A static sleeve disposed in but rotationally independent of the coring bit receives a portion of a core sample of the formation resulting from extension of the coring bit into the formation. The static sleeve comprises a protrusion extending radially inward toward the core sample sufficiently to mark the core sample.Type: ApplicationFiled: September 28, 2012Publication date: April 4, 2013Inventors: Richard Dan Ward, Mark Milkovisch, Warren Askew, Gokhan Erol, Bo Yang, Steven E. Buchanan, Jean-Michel Hache, Adam Zygmunt Cygan
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Publication number: 20130008719Abstract: An example coring tool includes a cylindrical body having a leading edge to contact a substance and a cavity defined at least in part by an inner surface of the cylindrical body. The inner surface is to engage and retain a sample from the substance with a plurality of raised features. The raised features are shaped so that at least one of the raised features or an exterior surface of a sample in the cavity deforms to increase a force required to remove the sample from the cavity.Type: ApplicationFiled: March 29, 2012Publication date: January 10, 2013Inventors: Barry Moon, Vincent Jeffrey Pisio, Steven E. Buchanan
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Patent number: 8292004Abstract: Example downhole marking apparatus and methods to use the same are disclosed. A disclosed example apparatus includes a coring tool assembly for use in extracting a core sample from a subterranean formation adjacent a borehole; a sample container retainer operatively coupled to the coring tool assembly, wherein the sample container retainer is configured to hold a sample container configured to receive the core sample; and a scriber operatively coupled to the sample container retainer and configured to mark a surface of the sample container.Type: GrantFiled: May 20, 2010Date of Patent: October 23, 2012Assignee: Schlumberger Technology CorporationInventors: Steven E. Buchanan, Adam Walkingshaw, Alex Slocum, Gokhan Erol
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Patent number: 8210284Abstract: A coring apparatus that includes a housing that is selectively pivotable in a downhole tool, a rotatable coring bit, a gear drive rotatively coupled to the housing, and a key member configured to engage an inner surface of the gear drive and an outer surface of the coring bit and configured to maintain a rotational relationship between the coring bit and the gear drive. A pinion is rotatively coupled to the housing and configured to engage an outer surface of the gear drive, and a motor is affixed to the housing and operatively coupled to the pinion. The gear drive, the key member, the pinion and the motor are configured to pivot in unison with the housing.Type: GrantFiled: October 22, 2009Date of Patent: July 3, 2012Assignee: Schlumberger Technology CorporationInventors: Steven E. Buchanan, Lennox E. Reid, Jr., Rachel Lavaure
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Publication number: 20120000711Abstract: An apparatus for conveyance via wireline or drillstring in a wellbore extending into a subterranean formation, the apparatus comprising a coring bit assembly, a first motor operatively coupled to the coring bit assembly via a gear box to rotationally drive the coring bit assembly, and a second motor to drive the coring bit assembly into the formation while the coring bit assembly is rotated by the first motor, wherein the coring bit assembly comprises a feature to permit the coring bit assembly to be broken when the coring bit assembly becomes stuck in the formation.Type: ApplicationFiled: September 12, 2011Publication date: January 5, 2012Inventors: Steven E. Buchanan, Lennox E. Reid, JR., Rachel Lavaure
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Publication number: 20110284289Abstract: Example downhole marking apparatus and methods to use the same are disclosed. A disclosed example apparatus includes a coring tool assembly for use in extracting a core sample from a subterranean formation adjacent a borehole; a sample container retainer operatively coupled to the coring tool assembly, wherein the sample container retainer is configured to hold a sample container configured to receive the core sample; and a scriber operatively coupled to the sample container retainer and configured to mark a surface of the sample container.Type: ApplicationFiled: May 20, 2010Publication date: November 24, 2011Inventors: Steven E. Buchanan, Adam Walkingshaw, Alex Slocum, Ghokan Erol
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Publication number: 20110094801Abstract: Example coring apparatus and methods to use the same are disclosed. A disclosed example apparatus includes a housing that is selectively pivotable in a downhole tool, a rotatable coring bit, a gear drive rotatively coupled to the housing, a key member configured to engage an inner surface of the gear drive and an outer surface of the coring bit and configured to maintain a rotational relationship between the coring bit and the gear drive, a pinion rotatively coupled to the housing, the pinion configured to engage an outer surface of the gear drive, and a motor affixed to the housing and operatively coupled to the pinion, wherein the gear drive, the key member, the pinion and the motor are configured to pivot in unison with the housing.Type: ApplicationFiled: October 22, 2009Publication date: April 28, 2011Inventors: Steven E. Buchanan, Lennox E. Reid, JR., Rachel Lavaure
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Patent number: 6863124Abstract: The present invention provides a submersible motor and pump system for use in a wellbore. More specifically, the present invention provides a submersible system having a sealed motor and a magnetic coupling to transmit torque from the sealed motor to the pump.Type: GrantFiled: December 17, 2002Date of Patent: March 8, 2005Assignee: Schlumberger Technology CorporationInventors: Grigory L. Araux, Steven E. Buchanan