Patents by Inventor Yuri Burhan

Yuri Burhan 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).

  • Patent number: 8702825
    Abstract: A method of forming a cutting element that includes filling at least one non-planar region on an upper surface of a carbide substrate with a diamond mixture, subjecting the substrate and the diamond mixture to high pressure high temperature sintering conditions to form a reduced-CTE substrate having polycrystalline diamond that extends a depth into the reduced-CTE substrate in an interface region, and an upper surface made of a composite surface of diamond and carbide, and attaching a polycrystalline diamond body to the composite surface of the reduced-CTE substrate is disclosed.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: April 22, 2014
    Assignee: Smith International, Inc.
    Inventors: Yuelin Shen, Youhe Zhang, Jibin Shi, Yuri Burhan, Gregory T. Lockwood
  • Publication number: 20140054094
    Abstract: A cutting element is disclosed that includes a sleeve, a rotatable cutting element, and at least one retaining ring. The sleeve has a first inner diameter and a second inner diameter, wherein the second inner diameter is larger than the first inner diameter and located at a lower axial position than the first inner diameter. The rotatable cutting element has an axis of rotation extending therethrough, a cutting face, a body extending axially downward from the cutting face, wherein the body has a shaft that is disposed within the sleeve, and a circumferential groove formed around an outer surface of the shaft. The at least one retaining ring is disposed in the circumferential groove and extends at least around the entire circumference of the shaft, wherein the at least one retaining ring protrudes from the circumferential groove, thereby retaining the rotatable cutting element within the sleeve.
    Type: Application
    Filed: August 21, 2013
    Publication date: February 27, 2014
    Applicant: Smith International, Inc.
    Inventors: Yuri Burhan, Jibin Shi, Chen Chen, Youhe Zhang
  • Publication number: 20130292186
    Abstract: A downhole cutting tool may include a tool body, a plurality of blades extending azimuthally from the tool body comprising a cone region, a shoulder region, and a gage region, at least one cutting element disposed along the cone region and the shoulder region of the blade, and at least one gage cutting element disposed along the gage region of the blade wherein the at least one gage cutting element has a negative backrake ranging from greater than 70 to about 85 degrees.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 7, 2013
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: YOUHE ZHANG, MICHAEL G. AZAR, CHEN CHEN, YURI BURHAN
  • Publication number: 20130015000
    Abstract: A cutting tool is disclosed that includes a tool body, a plurality of cutting element support structures extending from the tool body, at least one slot formed in at least one of the cutting element support structures, a cutting element having a diamond shearing element with a plurality of surfaces, and at least one mechanical retention mechanism adjacent to the cutting element. Each cutting element support structure has a leading face, a top side, and a trailing face, and the slot has two side surfaces, each side surface terminating at the leading face and top side of the cutting element support structure. Each surface of the cutting element has two dimensional values, wherein the cutting element is positioned in the at least one slot such that a plane in which the shortest dimensional value lies intersects the slot side surfaces.
    Type: Application
    Filed: July 5, 2012
    Publication date: January 17, 2013
    Applicant: Smith International, Inc.
    Inventors: Youhe Zhang, Jibin Shi, Yuri Burhan
  • Publication number: 20120273280
    Abstract: A cutting element may have a substrate; and an ultrahard material layer having a substantially planar upper surface disposed on an upper surface of the substrate; wherein at least a portion of the side surface between the upper surface of the substrate and a lower end of the substrate form at least one conic surface, wherein the at least one conic surface extends a height relative to the total height of the substrate and ultrahard material layer ranging from about 1:10 to 9:10, and wherein the substrate comprises a substantially planar lower surface. The cutting elements may also be rotatable cutting elements at least partially surrounded by outer support elements.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 1, 2012
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Youhe Zhang, Yuelin Shen, Yuri Burhan, Jibin Shi
  • Publication number: 20120273281
    Abstract: A cutting element is disclosed that has a sleeve with a first inner diameter and a second inner diameter, wherein the second inner diameter is larger than the first inner diameter and located at a lower axial position than the first inner diameter, a rotatable cutting element having an axis of rotation extending therethrough, the rotatable cutting element at least partially disposed within the sleeve, wherein the rotatable cutting element has a cutting face and a body extending axially downward from the cutting face, at least one hole extending from an outer surface of the body toward the axis of rotation, and a locking device disposed in each hole, wherein the locking device protrudes from the hole to contact the second inner diameter of the sleeve, thereby retaining the rotatable cutting element within the sleeve.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 1, 2012
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Yuri Burhan, Jiaqing Yu, Jonan M. Fulenchek, Youhe Zhang, Yuelin Shen
  • Publication number: 20110297454
    Abstract: A drill bit having a bit body, a plurality of blades extending radially from the bit body, a plurality of cutter pockets disposed on the plurality of blades, at least one rolling cutter disposed in one of the cutter pockets, wherein each rolling cutter has a substrate, a cutting face, a cutting edge, and a side surface, and at least one blocker positioned adjacent to each of the at least one rolling cutters on a leading face of the blade, wherein each blocker has a retention end and an attachment end is disclosed. The retention end of each blocker is positioned adjacent to a portion of the cutting face of each rolling cutter to retain the rolling cutter in the cutter pocket and the attachment end is attached to a portion of the blade.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 8, 2011
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Yuelin Shen, Youhe Zhang, Yuri Burhan, Michael A. Siracki, Mahavir Nagaraj, Bala Durairajan, Scott D. McDonough, Peter Thomas Cariveau
  • Publication number: 20110192652
    Abstract: A method of forming a cutting element that includes filling at least one non-planar region on an upper surface of a carbide substrate with a diamond mixture, subjecting the substrate and the diamond mixture to high pressure high temperature sintering conditions to form a reduced-CTE substrate having polycrystalline diamond that extends a depth into the reduced-CTE substrate in an interface region, and an upper surface made of a composite surface of diamond and carbide, and attaching a polycrystalline diamond body to the composite surface of the reduced-CTE substrate is disclosed.
    Type: Application
    Filed: February 9, 2011
    Publication date: August 11, 2011
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Yuelin Shen, Youhe Zhang, Jibin Shi, Yuri Burhan, Gregory T. Lockwood
  • Publication number: 20110114394
    Abstract: Methods for manufacturing a matrix tool body comprising placing a first matrix material within a first region of a mold cavity proximate a surface of the mold. A second matrix material may be placed within a second region of the mold cavity positioned inwardly of the first matrix material. The first matrix material and the second matrix material comprise a plurality of hard particles. The plurality of hard particles of the second matrix material have a median particle size that is less than the median particle size of the first matrix material. The plurality of hard particles of the first matrix material and the second matrix material are infiltrated with an infiltration binder to form the tool body. Also included are tool bodies having one or more regions proximate a surface of the tool body comprising an erosion resistant matrix material and/or a wear resistant matrix material.
    Type: Application
    Filed: November 18, 2010
    Publication date: May 19, 2011
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Gregory T. Lockwood, Youhe Zhang, Yuri Burhan
  • Publication number: 20100320005
    Abstract: In one aspect, an impregnated drill bit is provided having at least one insert positioned within at least one of the plurality of blades such that the insert spans more than 75% of the height of the blade and at least a portion of the blade has a blade height of at least 40 mm. In another aspect, an impregnated drill bit is provided having a plurality of blades with at least a portion of at least one blade having a blade height of at least 60 mm. Also provided are methods of manufacturing such impregnated drill bits.
    Type: Application
    Filed: June 22, 2010
    Publication date: December 23, 2010
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Yuri Burhan, Gregory T. Lockwood, Jonan Fulencheck, Michael G. Azar
  • Publication number: 20100314176
    Abstract: Cutter assemblies comprising an outer support element and a cutting element disposed therein. The cutting element is immovably attached to the outer support element. Also provided are downhole tools incorporating such cutter assemblies and methods of making such downhole tools.
    Type: Application
    Filed: June 11, 2010
    Publication date: December 16, 2010
    Applicant: SMITH INTERNATIONAL, INC.
    Inventors: Youhe Zhang, Yuelin Shen, Yuri Burhan, Gregory Lockwood