Patents by Inventor Graham R. Watson
Graham R. Watson 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: 8151883Abstract: A stimulation technique is provided for use in an open hole well. The stimulation technique utilizes a system which comprises one or more isolation devices positioned to isolate desired regions of the open hole well. At least one release mechanism is used to provide controlled release of stimulation material to a desired wellbore region of the open hole well. Additionally, a protection mechanism cooperates with each release mechanism to prevent undesirable contact between stimulation material and the surrounding wellbore wall of the open hole well. In many applications, the entire system is deployed and operated during a single trip downhole into the well.Type: GrantFiled: June 6, 2010Date of Patent: April 10, 2012Assignee: Schlumberger Technology CorporationInventors: Ricardo Gomez Simancas, Bryan Stamm, Graham R. Watson, Tom Saunders
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Patent number: 7946356Abstract: An item (e.g. a drill bit) handling method, the item for use in a well operation, the method including producing information about an item used for a specific well task, the information including design information and intended use information, producing an item identification specific to the item, associating the information with the item identification producing thereby an information package, installing the information package in at least one wave-energizable apparatus, and applying the at least one wave-energizable apparatus to the item.Type: GrantFiled: January 31, 2009Date of Patent: May 24, 2011Assignee: National Oilwell Varco L.P.Inventors: William L. Koederitz, Michael N. Porche, Graham R. Watson, Aaron C. Cooke, Leon Ellison, Rheinhold Kammann, Manfred Worms, Clive Lam, Guy L. McClung, III
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Publication number: 20090205820Abstract: An item (e.g. a drill bit) handling method, the item for use in a well operation, the method including producing information about an item used for a specific well task, the information including design information and intended use information, producing an item identification specific to the item, associating the information with the item identification producing thereby an information package, installing the information package in at least one wave-energizable apparatus, and applying the at least one wave-energizable apparatus to the item. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).Type: ApplicationFiled: January 31, 2009Publication date: August 20, 2009Inventors: William L. Koederitz, Michael N. Porche, Graham R. Watson, Aaron C. Cooke, Leon Ellison, Rheinhold Kammann, Manfred Worms, Clive Lam, Guy L. McClung, III
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Patent number: 6606923Abstract: A method to design a bi-center drill bit designed to drill out the cement and other material in the casing and then proceed to drill out the full gauge drilling diameter borehole with a diameter greater than the inside of the casing. The bi-center drill bit has a pilot section on the end of the bit body, an eccentric reamer section and a plurality of cutting elements on the pilot section. The design method comprises the steps of: defining a first center of rotation of the pilot section about the longitudinal axis, defining a radius of rotation R1 of the drill bit about the first center of rotation, defining a second center of rotation of the pilot section spaced apart from the first center of rotation by a distance D, defining a radius of rotation R2 of the drill bit about the second center of rotation, and setting the relationship between D, R1 and R2 such that R1 is less than the sum of R2 and D.Type: GrantFiled: February 11, 2002Date of Patent: August 19, 2003Assignee: Grant Prideco, L.P.Inventors: Steven James Hart, Graham R. Watson
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Publication number: 20020069725Abstract: A method to design a bi-center drill bit designed to drill out the cement and other material in the casing and then proceed to drill out the full gauge drilling diameter borehole with a diameter greater than the inside of the casing. The bi-center drill bit has a pilot section on the end of the bit body, an eccentric reamer section and a plurality of cutting elements on the pilot section. The design method comprises the steps of: defining a first center of rotation of the pilot section about the longitudinal axis, defining a radius of rotation R1 of the drill bit about the first center of rotation, defining a second center of rotation of the pilot section spaced apart from the first center of rotation by a distance D, defining a radius of rotation R2 of the drill bit about the second center of rotation, and setting the relationship between D, R1 and R2 such that R1 is less than the sum of R2 and D.Type: ApplicationFiled: February 11, 2002Publication date: June 13, 2002Applicant: Schlumberger Technology Co.Inventors: Graham R. Watson, Steven James Hart
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Patent number: 6394200Abstract: The present invention is a bi-center drill bit designed to drill out the cement and other material in the casing and then proceed to drill out the full gauge drilling diameter borehole with a diameter greater than the inside of the casing. The bi-center drill bit is configured with non-drilling bearing elements that contact with the casing when the bit is drilling the cement without allowing the gauge cutting elements of the bi-center drill bit to contact the casing. The bi-center drill bit also has a cutting element configuration which prevents reverse scraping of the cutting elements when drilling both the cement and the formation.Type: GrantFiled: September 11, 2000Date of Patent: May 28, 2002Assignee: Camco International (U.K.) LimitedInventors: Graham R. Watson, Steven James Hart
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Publication number: 20020020565Abstract: A drillout bi-center bit includes first and second axes of rotation separated by a distance D, a first region of radius D centered on one of the axes of rotation, a second region of radius D centered on the other of the axes of rotation, and a third region defined by the overlap between the first and second regions, wherein the cutters provided within the third region are designed to withstand cutting in opposing cutting directions. This may be achieved by providing each cutter with two cutting faces, or by providing two groups of cutters, one group arranged to cut in one direction, the other group being designed to cut upon rotation in the other direction, one of the groups protruding from the bit body of the bit to a greater depth than the other group.Type: ApplicationFiled: August 3, 2001Publication date: February 21, 2002Inventors: Steven James Hart, Graham R. Watson, Jeffery E. Daly
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Patent number: 6092613Abstract: A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.Type: GrantFiled: December 9, 1998Date of Patent: July 25, 2000Assignee: Camco International (UK) LimitedInventors: Douglas Caraway, John Hayward, Malcolm R. Taylor, Tom Scott Roberts, Steven Taylor, Graham R Watson
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Patent number: 5992547Abstract: A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.Type: GrantFiled: December 9, 1998Date of Patent: November 30, 1999Assignee: Camco International (UK) LimitedInventors: Douglas Caraway, John Hayward, Malcolm R. Taylor, Tom Scott Roberts, Steven Taylor, Graham R Watson
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Patent number: 5904213Abstract: A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In each of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The gauge region of the drill bit comprises a substantially continuous bearing surface which extends around the whole of the gauge region.Type: GrantFiled: April 16, 1997Date of Patent: May 18, 1999Assignee: Camco International (UK) LimitedInventors: Douglas Caraway, John Hayward, Malcolm R. Taylor, Tom Scott Roberts, Steven Taylor, Graham R Watson