Patents by Inventor Giampaolo Ferrari

Giampaolo Ferrari 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).

  • Rolling cone drill bit having high density cutting elements
    Patent number: 9856701
    Abstract: A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: January 2, 2018
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Gary Ray Portwood, Luca Tedeschi, Giampaolo Ferrari, Joshua Gatell, John Clunan, Allen Dean Chester White
  • ROLLING CONE DRILL BIT HAVING HIGH DENSITY CUTTING ELEMENTS
    Publication number: 20150376951
    Abstract: A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
    Type: Application
    Filed: June 2, 2015
    Publication date: December 31, 2015
    Inventors: Gary Ray Portwood, Luca Tedeschi, Giampaolo Ferrari, Joshua Gatell, John Clunan, Allen Dean Chester White
  • Rolling cone drill bit having high density cutting elements
    Patent number: 9074431
    Abstract: A rolling cone drill bit for drilling in earthen formations having a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: July 7, 2015
    Assignee: Smith International, Inc.
    Inventors: Gary Portwood, Luca Tedeschi, Giampaolo Ferrari, Josh Gatell, John Clunan, Allen D. White
  • Rolling cone drill bit having sharp cutting elements in a zone of interest
    Patent number: 8316968
    Abstract: A rolling cone drill bit comprises a bit body and a plurality of rolling cone cutters mounted on the bit body. Each cone cutter includes a plurality of gage cutting elements. Each gage cutting element has a cutting portion extending from a base portion to an extension height. Further, each gage cutting element contacts a gage curve at a gage curve contact point in a composite rotated profile view. Each gage cutting element has a cross-sectional area A1 in a first offset reference plane parallel to a base reference plane and offset from the base reference plane by an offset distance d1 equal to 10% of the extension height. The ratio of A1 to a cross-sectional area Ab of the base portion of each gage cutting element is less than 11%.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: November 27, 2012
    Assignee: Smith International, Inc.
    Inventors: Giampaolo Ferrari, Gary Portwood, Carl A. Deen
  • ROLLING CONE DRILL BIT HAVING SHARP CUTTING ELEMENTS IN A ZONE OF INTEREST
    Publication number: 20100276207
    Abstract: A rolling cone drill bit comprises a bit body and a plurality of rolling cone cutters mounted on the bit body. Each cone cutter includes a plurality of gage cutting elements. Each gage cutting element has a cutting portion extending from a base portion to an extension height. Further, each gage cutting element contacts a gage curve at a gage curve contact point in a composite rotated profile view. Each gage cutting element has a cross-sectional area A1 in a first offset reference plane parallel to a base reference plane and offset from the base reference plane by an offset distance d1 equal to 10% of the extension height. The ratio of A1 to a cross-sectional area Ab of the base portion of each gage cutting element is less than 11%.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 4, 2010
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Giampaolo Ferrari, Gary Portwood, Carl A. Deen
  • Rolling Cone Drill Bit Having High Density Cutting Elements
    Publication number: 20090188724
    Abstract: A rolling cone drill bit for drilling in earthen formations. In an embodiment, the drill bit comprises a plurality of rolling cone cutters. Each cone cutter includes a plurality of gage cutting elements, a first plurality of bottomhole cutting elements, and a second plurality of bottomhole cutter elements. Each of the first plurality of bottomhole cutting elements is staggered relative to the gage cutting elements on each cone cutter, and the profiles of the gage cutting elements and the first plurality of bottomhole cutting elements on each cone cutter overlap in rotated profile view. Each of the second plurality of bottomhole cutting elements is staggered relative to the first plurality of bottomhole cutting elements on at least one cone cutter, and the profiles of the first plurality of bottomhole cutting elements and the second plurality of bottomhole cutting elements on at least one cone cutter overlap in rotated profile view.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 30, 2009
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Gary Portwood, Luca Tedeschi, Giampaolo Ferrari, Josh Gatell, John Clunan, Allen D. White