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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Singh; Amardeep
Address:
Houston, TX
No. of patents:
41
Patents:












Patent Number Title Of Patent Date Issued
8195438 Method for designing cutting structure for roller cone drill bits June 5, 2012
New cutting structures for roller cone drill bits are disclosed. In one aspect, a drill bit includes a bit body, roller cones attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on each of the roller cones, such that axia
8028773 Drill bit and cutter element having a fluted geometry October 4, 2011
A drill bit for cutting a borehole having a borehole sidewall, corner and bottom, includes a bit body having a bit axis and a rolling cone cutter mounted on the bit body and adapted for rotation about a cone axis. Further, the drill bit includes at least one insert having a base portion
7950476 Drill bit and cutter element having chisel crest with protruding pilot portion May 31, 2011
A rolling cone drill bit includes a cutter element having a cutting portion with a chisel crest and a pilot portion extending beyond the chisel crest. The pilot portion includes a cutting surface that may be generally conical, or form a second chisel crest. The cutting tip of the pil
7832506 Cutting elements with increased toughness and thermal fatigue resistance for drilling applicatio November 16, 2010
Cutting elements offering increased toughness and thermal fatigue resistance can be formed of a wear resistant material having coarse grains disposed in a binder matrix with a binder content of at least about 18% by weight. The coarse grains include grains of at least one selected fr
7798258 Drill bit with cutter element having crossing chisel crests September 21, 2010
A drill bit for cutting a borehole comprises a bit body including a bit axis. In addition, the drill bit comprises a rolling cone cutter mounted on the bit body. Further, the drill bit comprises a cutter element having a base portion with a diameter and a cutting portion extending theref
7798255 Drill bits having optimized cutting element counts for reduced tracking and/or increased drillin September 21, 2010
A roller cone drill bit for drilling earth formation includes rows arranged on each of the cones such that, when viewed in routed profile, cutting element profiles partially overlap other cutting element profiles. The roller cone drill bit having at least a first three interior rows
7721824 Multiple inserts of different geometry in a single row of a bit May 25, 2010
A method for designing a roller cone drill bit having a plurality of cutting elements in a row. The method includes defining a pitch pattern for the plurality of cutting elements such that a first group of adjacent cutting elements are arranged in a first pitch and a second group of
7699126 Cutting element having asymmetrical crest for roller cone drill bit April 20, 2010
A drill bit for drilling a borehole includes a cutter element comprising a base portion. In addition, the cutter element comprises a cutting portion extending from the base portion and terminating in an elongate crest extending between a first crest end and a second crest end, and having
7686106 Rock bit and inserts with wear relief grooves March 30, 2010
A rolling cone drill bit includes at least one cutter element comprising a base portion and a cutting portion extending from the base portion. The cutting portion includes a cutting surface with an apex defining an extension height and at least one rib extending from the apex toward the
7686104 Rolling cone drill bit having cutter elements positioned in a plurality of differing radial posi March 30, 2010
A drill bit for drilling through earthen formations and forming a borehole. In an embodiment, the bit comprises a bit body having a bit axis. In addition, the bit comprises a plurality of cone cutters, each of the cone cutters being mounted on the bit body and adapted for rotation ab
7631709 Drill bit and cutter element having chisel crest with protruding pilot portion December 15, 2009
A rolling cone drill bit includes a cutter element having a cutting portion with a chisel crest and a pilot portion extending beyond the chisel crest. The pilot portion includes a cutting surface that may be generally conical, or form a second chisel crest. The cutting tip of the pil
7624825 Drill bit and cutter element having aggressive leading side December 1, 2009
A cutter element for a drill bit includes a leading cutting surface and a trailing cutting surface. The leading surface includes a top surface and a front surface that meet in a radiused intersection forming a forward-facing, non-linear crest of non-uniform radius. The radius of the
7571083 Method of designing a drill bit, and bits made using said method August 4, 2009
A method for designing a drill bit that involves simulating a drill bit having cutting elements disposed thereon is provided. In particular, the method involves determining at least one drilling performance parameter while simulating drilling in a selected earth formation.
7549490 Arrangement of roller cone inserts June 23, 2009
A drill bit having cutting elements disposed on a roller cone surface in a non-linear pattern, wherein at least one of the cutting elements is asymmetrical to its axis of orientation. Also, a method for selecting and adjusting a cutting element orientation based on crater profile geometr
7377332 Multiple inserts of different geometry in a single row of a bit May 27, 2008
A method for designing a roller cone drill bit having a plurality of cutting elements in a row. The method includes defining a pitch pattern for the plurality of cutting elements such that a first group of adjacent cutting elements are arranged in a first pitch and a second group of
7370711 Rolling cone drill bit having non-circumferentially arranged cutter elements May 13, 2008
A rolling cone drill bit including multiple cones with regions of intermeshing and non-intermeshing cutter elements. In the non-intermeshed regions, an array of cutter elements is disposed about the cone surface in a non-circumferential arrangement with the cutter elements being moun
7341119 Hydro-lifter rock bit with PDC inserts March 11, 2008
A rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth on a rolling
7320375 Split cone bit January 22, 2008
A roller cone drill bit and a method for designing thereof. The roller cone drill bit includes a bit body configured to be coupled to a drill string and a journal depending from the bit body. A split roller cone is rotatably attached to the journal. The split roller cone includes an
7302374 Method of designing a drill bit, and bits made using said method November 27, 2007
A method for designing a drill bit that involves simulating a drill bit having cutting elements disposed thereon is provided. In particular, the method involves determining the axial forces acting on at least one of the cutting elements at a first orientation.
7292967 Methods for evaluating cutting arrangements for drill bits and their application to roller cone November 6, 2007
A method for evaluating a cutting arrangement for a drill bit includes selecting a cutting element arrangement for the drill bit and calculating a score for the cutting arrangement. This method may be used to evaluate the cutting efficiency of various drill bit designs. In one example, t
7234549 Methods for evaluating cutting arrangements for drill bits and their application to roller cone June 26, 2007
A method for evaluating a cutting arrangement for a drill bit includes selecting a cutting element arrangement for the drill bit and calculating a score for the cutting arrangement. This method may be used to evaluate the cutting efficiency of various drill bit designs. In one example, t
7195078 Multiple inserts of different geometry in a single row of a bit March 27, 2007
A method for designing a roller cone drill bit having a plurality of cutting elements in a row. The method includes defining a pitch pattern for the plurality of cutting elements such that a first group of adjacent cutting elements are arranged in a first pitch and a second group of
7059430 Hydro-lifter rock bit with PDC inserts June 13, 2006
A novel rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the troublesome corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth
6997273 Blunt faced cutter element and enhanced drill bit and cutting structure February 14, 2006
The cutter element includes a rounded apex offset from the center line of the insert and having a relatively broad and blunt front face and a narrower, more rounded rear face. The cutter element may be disposed in the outermost inner row of a rolling cone cutter of a bit with the bro
6948403 Bowed crests for milled tooth bits September 27, 2005
A method of forming milled teeth on a roller cone of a milled tooth roller cone rock bit includes shaping a crest of a chisel shaped milled tooth on the roller cone. The crest is shaped such that the crest has a convex profile from one corner to an opposite corner of the crest. Such a cr
6856949 Wear compensated roller cone drill bits February 15, 2005
A method for designing a drill bit that has at least one roller cone and a plurality of cutting elements, including selecting initial bit design parameters. Drilling simulations are then used to determine wear, and the simulated drill bit is changed to reflect the determined wear. Then,
6827161 Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling per December 7, 2004
A method for optimizing drilling performance of a roller cone drill bit is disclosed. The method includes simulating drilling with the bit in a selected earth formation to determine at least one drilling performance parameter. The orientation of at least one non-axisymmetric cutting
6823951 Arcuate-shaped inserts for drill bits November 30, 2004
Disclosed are a variety of arcuate-shaped inserts for drill bits, and in particular, for placement in rolling cone cutters of drill bits. The arcuate inserts include 360 degree or ring-shaped inserts, as well as inserts of smaller arcuate length. The arcuate inserts may include stress
6786288 Cutting structure for roller cone drill bits September 7, 2004
The invention is directed to a roller cone drill for drilling earth formations and a method of using the same. The drill bit includes a bit body and a plurality of roller cones attached to the bit body and able to rotate with respect to the bit body. The drill bit further includes a
6725952 Bowed crests for milled tooth bits April 27, 2004
A drill bit has a bit body and at least one roller cone rotatably mounted on the bit body. The cone has a plurality of milled teeth at selected locations on the cone. At least one of the milled teeth has a substrate having a convex crest and a layer of hardfacing applied to the convex
6688410 Hydro-lifter rock bit with PDC inserts February 10, 2004
A novel rolling cone rock bit includes a plurality of PDC or other cutters mounted to the leg of the drill bit and positioned to cut the troublesome corner of the bottomhole. The plurality of cutters may be the primary cutting component at gage diameter, or may be redundant to gage teeth
6637527 Cutting structure for roller cone drill bits October 28, 2003
The invention relates to a roller cone drill bit for drilling earth formations. The drill bit includes a bit body and a plurality of roller cones attached to the bit body and able to rotate with respect to the bit body. Each roller cone of the bit includes a truncated apex and a side
6619411 Design of wear compensated roller cone drill bits September 16, 2003
The invention is a drill bit that has a bit body, at least one roller cone attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on the at least one roller cone. At least one bit design parameter is selected so that the cut
6612384 Cutting structure for roller cone drill bits September 2, 2003
New cutting structures for roller cone drill bits. In one aspect, a drill bit includes a bit body, roller cones attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on each of the roller cones, such that axial force on the
6604587 Flat profile cutting structure for roller cone drill bits August 12, 2003
A drill bit including a roller cone and a plurality of cutting elements. The roller cone is affixed to a bit body and is arranged circumferentially about a bit axis of rotation. In one aspect, the cutting elements are arranged so that the crests of at least half of the cutting elements a
6601660 Cutting structure for roller cone drill bits August 5, 2003
Cutting structures for roller cone drill bits are disclosed. One aspect is a drill bit which includes a bit body, and a plurality of roller cones attached to the bit body and able to rotate with respect to the bit body. The bit further includes a plurality of cutting elements arranged on
6533051 Roller cone drill bit shale diverter March 18, 2003
A roller cone drill bit includes a bit body adapted to be rotated about a longitudinal axis. At least one leg which terminates in a shirttail portion depends from the bit body. The shirttail portion defines a first end face having a first circumferential groove thereon. The first cir
6530441 Cutting element geometry for roller cone drill bit March 11, 2003
A roller cone drill bit for drilling earth formations is disclosed. The bit includes a bit body and a plurality of roller cones attached to the bit body and able to rotate with respect to the bit body. The drill bit includes plurality of cutting elements disposed on each of the roller
6527068 Roller cone drill bit having non-axisymmetric cutting elements oriented to optimize drilling per March 4, 2003
A method for optimizing drilling performance of a roller cone drill bit is disclosed. The method includes simulating drilling with the bit in a selected earth formation to determine at least one drilling performance parameter. The orientation of at least one non-axisymmetric cutting
6374930 Cutting structure for roller cone drill bits April 23, 2002
The invention is directed to a roller cone drill for drilling earth formations. The drill bit includes a bit body and a plurality of roller cones attached to the bit body and able to rotate with respect to the bit body. The drill bit further includes a plurality of teeth disposed on each
6170582 Rock bit cone retention system January 9, 2001
A roller cone drill bit includes a bit body adapted to be rotated about a longitudinal axis. At least one leg depends from the bit body, and a journal is cantilevered from the leg. A roller cone is rotatably mounted on the journal. A cone retention member is disposed between a first slot










 
 
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