Patents by Inventor Corey Eugene Hoffman
Corey Eugene Hoffman 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: 9587466Abstract: A method for abandonment of a subsea well includes: setting a packer of a lower cementing tool against a bore of an inner casing at a location adjacent to an outer casing; fastening a pressure control assembly (PCA) to the subsea wellhead; hanging an upper cementing tool from the PCA and stabbing the upper cementing tool into a polished bore receptacle of the lower cementing tool; perforating a wall of the inner casing below the packer; perforating the inner casing wall above the packer by operating a perforator of the upper cementing tool; and pumping cement slurry followed by a release plug through bores of the cementing tools. The release plug engages and launches a cementing plug from the lower cementing tool. The cementing plug drives the cement slurry through the perforations below the packer and into an inner annulus formed between the inner casing and the outer casing.Type: GrantFiled: September 11, 2015Date of Patent: March 7, 2017Assignee: Wild Well Control, Inc.Inventors: Philip Martial Burguieres, Corey Eugene Hoffman, Stephen Paul Breaux, Kenneth Thomas Wilke
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Patent number: 9488024Abstract: A method for abandonment of a subsea well includes: fastening a pressure control assembly (PCA) to a subsea wellhead; and deploying a tool string into the PCA. The tool string includes a packer and an upper perforator located above the packer. The method further includes: closing a bore of the PCA above the tool string with a solid barrier; and setting the packer against an inner casing hung from the subsea wellhead. The method further includes, while the PCA bore is closed, perforating a wall of the inner casing by operating the upper perforator. The method further includes injecting cement slurry into an inner annulus formed between the inner casing and an outer casing hung from the subsea wellhead.Type: GrantFiled: February 26, 2013Date of Patent: November 8, 2016Assignee: Wild Well Control, Inc.Inventors: Corey Eugene Hoffman, Stace Brac McDaniel, Christopher John Murphy
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Publication number: 20160076341Abstract: A method for abandonment of a subsea well includes: setting a packer of a lower cementing tool against a bore of an inner casing at a location adjacent to an outer casing; fastening a pressure control assembly (PCA) to the subsea wellhead; hanging an upper cementing tool from the PCA and stabbing the upper cementing tool into a polished bore receptacle of the lower cementing tool; perforating a wall of the inner casing below the packer; perforating the inner casing wall above the packer by operating a perforator of the upper cementing tool; and pumping cement slurry followed by a release plug through bores of the cementing tools. The release plug engages and launches a cementing plug from the lower cementing tool. The cementing plug drives the cement slurry through the perforations below the packer and into an inner annulus formed between the inner casing and the outer casing.Type: ApplicationFiled: September 11, 2015Publication date: March 17, 2016Inventors: Philip Martial BURGUIERES, Corey Eugene HOFFMAN, Stephen Paul BREAUX, Kenneth Thomas WILKE
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Patent number: 8857520Abstract: A method for riserless intervention of a subsea well includes: lowering a pressure control assembly (PCA) from a vessel to a subsea production tree; fastening the PCA to the tree; lowering a control pod from the vessel to the PCA using an umbilical; fastening the control pod to the PCA; lowering an end of a fluid conduit from the vessel to the PCA; and fastening the fluid conduit to the PCA using a dry break connection.Type: GrantFiled: April 27, 2011Date of Patent: October 14, 2014Assignee: Wild Well Control, Inc.Inventors: Corey Eugene Hoffman, Stace Brac McDaniel, Paul Alexander Blaikie
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Publication number: 20130269948Abstract: A method for abandonment of a subsea well includes: fastening a pressure control assembly (PCA) to a subsea wellhead; and deploying a tool string into the PCA. The tool string includes a packer and an upper perforator located above the packer. The method further includes: closing a bore of the PCA above the tool string with a solid barrier; and setting the packer against an inner casing hung from the subsea wellhead. The method further includes, while the PCA bore is closed, perforating a wall of the inner casing by operating the upper perforator. The method further includes injecting cement slurry into an inner annulus formed between the inner casing and an outer casing hung from the subsea wellhead.Type: ApplicationFiled: February 26, 2013Publication date: October 17, 2013Applicant: Wild Well Control, Inc.Inventors: Corey Eugene HOFFMAN, Stace Brac McDANIEL, Christopher John MURPHY
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Publication number: 20120273219Abstract: A method for riserless intervention of a subsea well includes: lowering a pressure control assembly (PCA) from a vessel to a subsea production tree; fastening the PCA to the tree; lowering a control pod from the vessel to the PCA using an umbilical; fastening the control pod to the PCA; lowering an end of a fluid conduit from the vessel to the PCA; and fastening the fluid conduit to the PCA using a dry break connection.Type: ApplicationFiled: April 27, 2011Publication date: November 1, 2012Inventors: Corey Eugene Hoffman, Stace Brac McDaniel, Paul Alexander Blaikie
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Publication number: 20120273217Abstract: Embodiments of the present invention generally relate to a casing tester for plugging and abandoning a wellbore. In one embodiment, a method of testing an annulus defined between a first tubular string and a second tubular string includes engaging a first annular packer with an outer surface of the first tubular string and engaging a second annular packer with an outer surface of the second tubular string. The tubular strings extend into a wellbore. The method further includes injecting a test fluid between the packers until a predetermined pressure is exerted on the annulus.Type: ApplicationFiled: July 11, 2012Publication date: November 1, 2012Inventors: Corey Eugene Hoffman, Dolphus C. Green, III
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Patent number: 8240387Abstract: Embodiments of the present invention generally relate to a casing tester for plugging and abandoning a wellbore. In one embodiment, a method of testing an annulus defined between a first tubular string and a second tubular string includes engaging a first annular packer with an outer surface of the first tubular string and engaging a second annular packer with an outer surface of the second tubular string. The tubular strings extend into a wellbore. The method further includes injecting a test fluid between the packers until a predetermined pressure is exerted on the annulus.Type: GrantFiled: November 11, 2008Date of Patent: August 14, 2012Assignee: Wild Well Control, Inc.Inventors: Corey Eugene Hoffman, Dolphus C. Green, III
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Publication number: 20120193104Abstract: A method for riserless intervention of a subsea well includes connecting an intervention assembly to a bottom hole assembly (BHA). The BHA is connected to coiled tubing. The method further includes lowering the intervention assembly to a blowout preventer (BOP) fastened to a subsea production tree using an injector of a support vessel engaged with the coiled tubing; fastening the intervention assembly to the BOP; slacking the coiled tubing using the vessel injector; engaging a stripper of the intervention assembly with the coiled tubing; and driving the BHA through the tree and into a wellbore using a subsea injector of the intervention assembly while synchronizing both injectors to maintain the slack in the coiled tubing.Type: ApplicationFiled: February 1, 2011Publication date: August 2, 2012Inventors: Corey Eugene Hoffman, Patrick Michael Cargol, JR.
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Patent number: 8141509Abstract: Embodiments of the present invention generally relate to a subsea salvage operation using a lifting magnet. In one embodiment, a method of salvaging a submerged production platform includes deploying a salvage vessel to a wreckage site of the submerged production platform; lowering a lifting magnet from the salvage vessel to the submerged production platform; and activating the lifting magnet, thereby capturing at least a portion of the submerged production platform.Type: GrantFiled: November 14, 2008Date of Patent: March 27, 2012Assignee: Wild Well Control, Inc.Inventors: Corey Eugene Hoffman, Theodore Wade Caffarel
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Publication number: 20120043089Abstract: A method for riserless intervention of a subsea well includes: lowering a pressure control assembly (PCA) from a vessel to a subsea production tree; fastening the PCA to the tree; deploying a plug running tool (PRT) into the PCA, wherein the PRT comprises a latch, an anchor, and a stroker; engaging the latch with a plug of the tree; engaging the anchor with the PCA; and operating the stroker to pull the latch and the plug from the tree.Type: ApplicationFiled: August 15, 2011Publication date: February 23, 2012Inventors: Corey Eugene Hoffman, Tom Unsgaard
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Publication number: 20110203795Abstract: Embodiments of the present invention generally relate to a sealant for forming durable plugs in wells and method for completing or abandoning wells. In one embodiment, a method of plugging a wellbore includes mixing sealant; mixing cement; pumping the cement and sealant into the wellbore. The cement is above the sealant and the sealant cures to become viscoelastic or semisolid.Type: ApplicationFiled: February 24, 2010Publication date: August 25, 2011Inventors: Christopher John Murphy, Corey Eugene Hoffman, Larry Watters, Fred Sabins, Jeffrey Watters, Paul L. Sonnier
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Publication number: 20100122650Abstract: Embodiments of the present invention generally relate to a subsea salvage operation using a lifting magnet. In one embodiment, a method of salvaging a submerged production platform includes deploying a salvage vessel to a wreckage site of the submerged production platform; lowering a lifting magnet from the salvage vessel to the submerged production platform; and activating the lifting magnet, thereby capturing at least a portion of the submerged production platform.Type: ApplicationFiled: November 14, 2008Publication date: May 20, 2010Inventors: Corey Eugene Hoffman, Theodore Wade Caffarel
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Publication number: 20100116504Abstract: Embodiments of the present invention generally relate to a casing tester for plugging and abandoning a wellbore. In one embodiment, a method of testing an annulus defined between a first tubular string and a second tubular string includes engaging a first annular packer with an outer surface of the first tubular string and engaging a second annular packer with an outer surface of the second tubular string. The tubular strings extend into a wellbore. The method further includes injecting a test fluid between the packers until a predetermined pressure is exerted on the annulus.Type: ApplicationFiled: November 11, 2008Publication date: May 13, 2010Inventors: Corey Eugene Hoffman, Dolphus C. Green, III
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Publication number: 20020011341Abstract: A pack-off system for packing off an area of interest in a wellbore, the pack-off system comprising a body, two spaced-apart selectively settable packing elements on the body for sealing off the area of interest, selectively actuatable setting apparatus connected to the body for selectively setting the two spaced-apart selectively settable packing elements, the selectively actuatable setting apparatus actuatable by fluid under pressure introduced into the pack-off system. A method for packing off an area of interest in a wellbore, the method including installing a pack-off system as described herein in the wellbore to pack-off the area of interest. Such a method may also include flowing treatment fluid from the pack-off system to an area of interest in an earth formation and/or adjacent a wellbore in the earth.Type: ApplicationFiled: May 15, 2001Publication date: January 31, 2002Inventors: Gary Duron Ingram, Corey Eugene Hoffman
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Patent number: 6257339Abstract: A wellbore system with a tubular string extending from an earth surface down into a wellbore in the earth, a packer system with a selectively settable packer element, and a disconnect located between an end of the tubular string and the packer system, the disconnect operable from the surface by imposing a downward force on the tubular string. In one aspect the packer system's packer element is a tension-set packer element. A wellbore disconnect with a top sub, a piston having an upper end secured to the top sub and a portion below the upper end releasably secured with at least one releasable member to a carrier member, the carrier member having apparatus for selectively gripping the piston, the apparatus for selectively gripping the piston also selectively gripping a bottom sub within which the piston is movable, the at least one releasable member releasable in response to a downward force on the disconnect.Type: GrantFiled: October 2, 1999Date of Patent: July 10, 2001Assignee: Weatherford/Lamb, IncInventors: David Michael Haugen, Gary Duron Ingram, Corey Eugene Hoffman, Robert Stephen Beeman
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Patent number: 6253856Abstract: A pack-off system for packing off an area of interest in a wellbore, the pack-off system comprising a body, two spaced-apart selectively settable packing elements on the body for sealing off the area of interest, selectively actuatable setting apparatus connected to the body for selectively setting the two spaced-apart selectively settable packing elements, the selectively actuatable setting apparatus actuatable by fluid under pressure introduced into the pack-off system. A method for packing off an area of interest in a wellbore, the method including installing a pack-off system as described herein in the wellbore to pack-off the area of interest. Such a method may also include flowing treatment fluid from the pack-off system to an area of interest in an earth formation and/or adjacent a wellbore in the earth.Type: GrantFiled: November 6, 1999Date of Patent: July 3, 2001Assignee: Weatherford/Lamb, Inc.Inventors: Gary Duron Ingram, Corey Eugene Hoffman