Patents by Inventor Daniel R. Hart
Daniel R. Hart 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: 11512551Abstract: A work string and method of performing a downhole operation is disclosed. The work string includes a first tool having a first ball seat configured to activate when a first activation pressure is applied to a plug seated at the first ball seat, and a second tool having a second ball seat configured to activate when a second activation pressure is applied to the plug when seated at the second ball seat, wherein the first activation pressure is different than the second activation pressure. A plug is dropped through a string in a wellbore. The first activation pressure is applied when the plug is at the first tool to activate the first tool. The second activation pressure is applied when the plug is at the second tool to activate the second tool.Type: GrantFiled: August 17, 2020Date of Patent: November 29, 2022Assignee: BAKER HUGHES OILFIELD OPERATIONS LLCInventors: David Alexander, Daniel R. Hart, Andrew D. Ponder, Irvin Turcios
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Publication number: 20220049569Abstract: A work string and method of performing a downhole operation is disclosed. The work string includes a first tool having a first ball seat configured to activate when a first activation pressure is applied to a plug seated at the first ball seat, and a second tool having a second ball seat configured to activate when a second activation pressure is applied to the plug when seated at the second ball seat, wherein the first activation pressure is different than the second activation pressure. A plug is dropped through a string in a wellbore. The first activation pressure is applied when the plug is at the first tool to activate the first tool. The second activation pressure is applied when the plug is at the second tool to activate the second tool.Type: ApplicationFiled: August 17, 2020Publication date: February 17, 2022Applicant: Baker Hughes Oilfield Operations LLCInventors: David Alexander, Daniel R. Hart, Andrew D. Ponder, Irvin Turcios
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Patent number: 10450820Abstract: A milling apparatus for cutting a tubular in a wellbore includes a cutting element on a tool body configured to cut the tubular in a wellbore when the cutting element is activated when the tool is moving upward inside the tubular. The cutting element cuts the tubular to form cuttings that fall into an annulus between the tubular and the wellbore. An agitator below the cutting element agitates the cuttings in the annulus to aid the cuttings to move from the annulus into the wellbore below the milling apparatus.Type: GrantFiled: March 28, 2017Date of Patent: October 22, 2019Assignee: BAKER HUGHES, A GE COMPANY, LLCInventors: Daniel R. Hart, Andrew D. Ponder, Lambertus C. Joppe
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Patent number: 10309178Abstract: A mill for milling a casing in a wellbore. The mill includes a plurality of radially extendable cutting members on a body. An activation device extends the cutting members radially outward from the body upon application of a hydraulic pressure to the activation device and mechanically retracts the blades upon removal of the hydraulic pressure from the activation device. The cutting members are separable from the body.Type: GrantFiled: November 20, 2015Date of Patent: June 4, 2019Assignee: BAKER HUGHES, A GE COMPANY, LLCInventor: Daniel R. Hart
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Patent number: 10267111Abstract: Dual section mills are selectively sequentially operated by locking an actuator for the backup mill as the primary mill has blades extended with internal flow through a housing. When the primary mill is spent the support string is shifted to defeat a lock on an actuation piston for the backup mill so that its blades can extend and continue to mill to finish the job. The blades of the primary mill continue to rotate in the already milled portion of the window as the secondary mill enlarges the window. Another way the secondary mill is actuated is to open access to flow to the secondary mill by removing a pressure barrier such as a valve or a disappearing plug, for example.Type: GrantFiled: May 5, 2016Date of Patent: April 23, 2019Assignee: BAKER HUGHES, A GE COMPANY, LLCInventors: Daniel R. Hart, Andrew D. Ponder, Lambertus C. Joppe
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Publication number: 20180283120Abstract: A milling apparatus for cutting a tubular in a wellbore includes a cutting element on a tool body configured to cut the tubular in a wellbore when the cutting element is activated when the tool is moving upward inside the tubular. The cutting element cuts the tubular to form cuttings that fall into an annulus between the tubular and the wellbore. An agitator below the cutting element agitates the cuttings in the annulus to aid the cuttings to move from the annulus into the wellbore below the milling apparatus.Type: ApplicationFiled: March 28, 2017Publication date: October 4, 2018Applicant: BAKER HUGHES INCORPORATEDInventors: Daniel R. Hart, Andrew D. Ponder, Lambertus C. Joppe
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Publication number: 20170321509Abstract: Dual section mills are selectively sequentially operated by locking an actuator for the backup mill as the primary mill has blades extended with internal flow through a housing. When the primary mill is spent the support string is shifted to defeat a lock on an actuation piston for the backup mill so that its blades can extend and continue to mill to finish the job. The blades of the primary mill continue to rotate in the already milled portion of the window as the secondary mill enlarges the window. Another way the secondary mill is actuated is to open access to flow to the secondary mill by removing a pressure barrier such as a valve or a disappearing plug, for example.Type: ApplicationFiled: May 5, 2016Publication date: November 9, 2017Applicant: BAKER HUGHES INCORPORATEDInventors: Daniel R. Hart, Andrew D. Ponder, Lambertus C. Joppe
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Publication number: 20170145766Abstract: A mill for milling a casing in a wellbore is disclosed that in one non-limiting embodiment includes a plurality of radially extendable cutting members on a body, an activation device that extends the cutting members radially outward from the body upon application of a hydraulic pressure to the activation device and mechanically retracts the blades upon removal of the hydraulic pressure from the activation device, and wherein the cutting members are separable from the bodyType: ApplicationFiled: November 20, 2015Publication date: May 25, 2017Applicant: BAKER HUGHES INCORPORATEDInventor: Daniel R. Hart
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Patent number: 9303475Abstract: A wellbore tool which includes a housing having an axial flowbore and a piston sleeve movably disposed within the flowbore. The tool is moveable between first and second operating positions by an actuation mechanism having a piston with a seat having a plurality of separate arcuate segments. The tool can be moved between first and second operating positions with the use of actuating plugs of different sizes that can be landed upon the seat.Type: GrantFiled: May 11, 2012Date of Patent: April 5, 2016Assignee: BAKER HUGHES INCORPORATEDInventors: Daniel R. Hart, Gregory L. Hern, Christopher W. Guidry, Robert S. O'Brien
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Patent number: 9145734Abstract: Devices and method for engaging a casing member for manipulation. A hydraulic torque locking mechanism is incorporated into a casing manipulation assembly. The hydraulic torque locking mechanism includes a clutch mechanism that is actuated using surface pump pressure from tool circulation.Type: GrantFiled: November 30, 2012Date of Patent: September 29, 2015Assignee: BAKER HUGHES INCORPORATEDInventor: Daniel R. Hart
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Patent number: 8356671Abstract: A tool for use in a wellbore which includes a housing having an axial flow bore and a piston sleeve moveably disposed within the flow bore. The tool is moveable between first and second operating positions by an actuation mechanism having a piston with a ball seat having a partially annular shape with an outer base and a plurality of retaining segments projecting radially inwardly therefrom. The tool can be moved between first and second operating positions with the use of actuating balls of different sizes that can be landed upon the ball seat.Type: GrantFiled: August 23, 2010Date of Patent: January 22, 2013Assignee: Baker Hughes IncorporatedInventors: Jeremy J. Guillory, Daniel R. Hart, Gregory L. Hern
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Publication number: 20120227973Abstract: A wellbore tool which includes a housing having an axial flowbore and a piston sleeve movably disposed within the flowbore. The tool is moveable between first and second operating positions by an actuation mechanism having a piston with a seat having a plurality of separate arcuate segments. The tool can be moved between first and second operating positions with the use of actuating plugs of different sizes that can be landed upon the seat.Type: ApplicationFiled: May 11, 2012Publication date: September 13, 2012Applicant: Baker Hughes IncorporatedInventors: Daniel R. Hart, Gregory L. Hern, Christopher W. Guidry, Robert S. O'Brien
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Publication number: 20110315390Abstract: A tool for use in a wellbore which includes a housing having an axial flow bore and a piston sleeve moveably disposed within the flow bore. The tool is moveable between first and second operating positions by an actuation mechanism having a piston with a ball seat having a partially annular shape with an outer base and a plurality of retaining segments projecting radially inwardly therefrom. The tool can be moved between first and second operating positions with the use of actuating balls of different sizes that can be landed upon the ball seat.Type: ApplicationFiled: August 23, 2010Publication date: December 29, 2011Applicant: Baker Hughes IncorporatedInventors: Jeremy J. Guillory, Daniel R. Hart, Gregory L. Hern
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Publication number: 20110174477Abstract: A milling bottom hole assembly (BHA) for use in cutting a full gauge window in a wellbore casing wall, the resultant length of the window being greater than or equal to the whipstock ramp length. A milling BHA is described which includes two shaft portions, a window mill and two bearing mills. The design, which involves strategically placed bearing mills, allows the milling BHA to stay on the whipstock ramp for the entire casing window milling operation and, thereafter, to optimally rapidly build angle and move laterally away from the whipstock and casing, creating a significantly long window which allows for easy passage of directional drilling BHAs through the milled window.Type: ApplicationFiled: February 5, 2011Publication date: July 21, 2011Applicant: Baker Hughes IncorporatedInventors: Suhas S. Verma, James S. Trahan, Daniel R. Hart, Christopher W. Guidry, Reena Thomas
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Patent number: 7905279Abstract: A combination whipstock and seal bore diverter system includes a whipstock; and a diverter configured to receive and support the whipstock in a selected orientation, the system being installable in a single run in a borehole.Type: GrantFiled: April 15, 2008Date of Patent: March 15, 2011Assignee: Baker Hughes IncorporatedInventors: Daniel R. Hart, Roy E. Swanson, Kjell Nygardsvoll, Songfeng Yang, Christopher W. Guidry, Charles W. Pleasants
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Publication number: 20090255664Abstract: A combination whipstock and seal bore diverter system includes a whipstock; and a diverter configured to receive and support the whipstock in a selected orientation, the system being installable in a single run in a borehole.Type: ApplicationFiled: April 15, 2008Publication date: October 15, 2009Applicant: BAKER HUGHES INCORPORATEDInventors: Daniel R. Hart, Roy E. Swanson, Kjell Nygardsvoll, Songfeng Yang, Christopher W. Guidry, Charles W. Pleasants
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Patent number: 7575049Abstract: An assembly for milling a window in a tubular features a layout that keeps a restorative force normal to the whipstock slope acting on the window mill to help it track the whipstock ramp long enough for making an exit at the desired location. A string mill assembly is made long enough to allow such a restorative force to be created on the window mill as it advances down the ramp. The bearing or cutting structures on the string mill are positioned with respect to the window mill so that either the top of the string mill or at least the first bearing structure above the window mill presents at the top of the window as the window mill arrives at the position where it is desired that it make an exit. The lower bearing structure of the string mill also preferably has a rounded profile to facilitate its entrance on to the whipstock ramp without getting in a bind on the tubular wall adjacent the top of the window.Type: GrantFiled: May 15, 2006Date of Patent: August 18, 2009Assignee: Baker Hughes IncorporatedInventors: Calvin J. Stowe, Evan G. Lewis, Mohan L. Soni, Daniel R. Hart
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Patent number: 7231979Abstract: A short radius exit from a window milled in casing is possible using a whipstock with a sloping surface in excess of 3.5° and a window mill whose diameter is reduced to a percentage generally below about 95% of the casing inside diameter in a mono-bore or non-through tubing application. The system provides a greater flexibility in choosing the window location and eliminates having to penetrate adjacent formations as compared to previous techniques using a longer exit radius. The decrease in mill diameter, as compared to previous techniques, limits stresses on the milling equipment to minimize equipment failures during window milling and subsequent drilling of the lateral.Type: GrantFiled: January 12, 2004Date of Patent: June 19, 2007Assignee: Baker Hughes IncorporatedInventors: Dave Stephen, James A. Sonnier, Joseph P. Degeare, Rustom K. Mody, Mohan L. Soni, Daniel R. Hart
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Publication number: 20040144047Abstract: A short radius exit from a window milled in casing is possible using a whipstock with a sloping surface in excess of 3.5° and a window mill whose diameter is reduced to a percentage generally below about 95% of the casing inside diameter in a mono-bore or non-through tubing application. The system provides a greater flexibility in choosing the window location and eliminates having to penetrate adjacent formations as compared to previous techniques using a longer exit radius. The decrease in mill diameter, as compared to previous techniques, limits stresses on the milling equipment to minimize equipment failures during window milling and subsequent drilling of the lateral.Type: ApplicationFiled: January 12, 2004Publication date: July 29, 2004Inventors: Dave Stephen, James A. Sonnier, Joseph P. Degeare, Rustom K. Mody, Mohan L. Soni, Daniel R. Hart
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Publication number: 20030010533Abstract: A whipstock for mono-bore applications is disclosed which could be run in on wireline. The setting mechanism allows for a predetermined setting force to be applied to the anchor slip or slips before and automatic release from the running tool. The slips are further retained in position by a ratchet block, which is mounted to the whipstock body to work with the slips against release during removal of the milling equipment. The whipstock body is formed to place the upper end against the casing after the slips are driven out so that the onset of milling will not result in damage to the upper end. A retrieval tool engages an opening in the whipstock to release the grip of the slips and bring the assembly to the surface.Type: ApplicationFiled: July 11, 2001Publication date: January 16, 2003Inventors: Daniel R. Hart, John P. Davis