US Patent No: 5,582,261

Number of patents in Portfolio can not be more than 2000

Drill bit having enhanced cutting structure and stabilizing features

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ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

A fixed cutter drill bit includes sets of cutter elements mounted on the bit face, each set including at least two cutters that are mounted at generally the same radial position with respect to the bit axis. The cutter elements of a set are positioned on different blades of the bit and are mounted having their cutting faces are out-of-profile, such that certain elements in the set are exposed to the formation material to a greater extent than other cutter elements in the same set. The cutter elements in a set may have equal diameters or may vary in size. The bit exhibits increased stability or vibration resistance, and drills initially as a "light-set" bit and later as a "heavy-set" bit.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SMITH INTERNATIONAL, INC.HOUSTON, TX951

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Keith, Carl W Spring, TX 23 619
Mensa-Wilmot, Graham Houston, TX 30 603

Cited Art

Patent Info (Count) # Cites Year
 
DRESSER INDUSTRIES, INC. (4)
4,429,755 Drill with polycrystalline diamond drill blanks for soft, medium-hard and hard formations 30 1981
4,475,606 Drag bit 29 1982
4,545,441 Drill bits with polycrystalline diamond cutting elements mounted on serrated supports pressed in drill head 46 1984
5,033,560 Drill bit with decreasing diameter cutters 26 1990
 
HALLIBURTON ENERGY SERVICES, INC. (4)
RE33757 Diamond drill bit with varied cutting elements 9 1990
5,265,685 Drill bit with improved insert cutter pattern 40 1991
5,238,075 Drill bit with improved cutter sizing pattern 34 1992
5,346,025 Drill bit with improved insert cutter pattern and method of drilling 19 1993
 
AMOCO CORPORATION (3)
4,932,484 Whirl resistant bit 63 1989
5,131,478 Low friction subterranean drill bit and related methods 97 1990
RE34435 Whirl resistant bit 40 1992
 
REEDHYCALOG UK LTD. (3)
4,942,933 Relating to rotary drill bits 22 1988
5,186,268 Rotary drill bits 86 1991
5,222,566 Rotary drill bits and methods of designing such drill bits 77 1992
 
BAKER HUGHES INCORPORATED (2)
5,178,222 Drill bit having enhanced stability 40 1991
5,377,773 Drill bit having combined positive and negative or neutral rake cutters 30 1993
 
EASTMAN CHRISTENSEN COMPANY (2)
4,471,845 Rotary drill bit 37 1982
4,512,426 Rotating bits including a plurality of types of preferential cutting elements 44 1983
 
CAMCO DRILLING GROUP LIMITED (1)
5,244,039 Rotary drill bits 47 1991
 
REED HYCALOG OPERATING LP (1)
4,444,281 Combination drag and roller cutter drill bit 33 1983
 
REEDHYCALOG, L.P. (1)
4,718,505 Rotary drill bits 47 1985

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
BAKER HUGHES INCORPORATED (13)
5,960,896 Rotary drill bits employing optimal cutter placement based on chamfer geometry 20 1997
6,186,251 Method of altering a balance characteristic and moment configuration of a drill bit and drill bit 67 1998
6,302,223 Rotary drag bit with enhanced hydraulic and stabilization characteristics 21 1999
6,510,906 Impregnated bit with PDC cutters in cone area 108 2000
6,575,256 Drill bit with lateral movement mitigation and method of subterranean drilling 10 2000
6,536,543 Rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles 13 2000
6,843,333 Impregnated rotary drag bit 27 2002
6,711,969 Methods for designing rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles 12 2002
7,896,106 Rotary drag bits having a pilot cutter configuraton and method to pre-fracture subterranean formations therewith 2 2007
7,730,976 Impregnated rotary drag bit and related methods 2 2007
7,861,809 Rotary drag bit with multiple backup cutters 1 2008
7,762,355 Rotary drag bit and methods therefor 2 2008
8,127,869 Earth-boring tools, methods of making earth-boring tools and methods of drilling with earth-boring tools 0 2010
 
SMITH INTERNATIONAL, INC. (7)
6,164,394 Drill bit with rows of cutters mounted to present a serrated cutting edge 23 1996
6,564,886 Drill bit with rows of cutters mounted to present a serrated cutting edge 17 2000
6,863,138 High offset bits with super-abrasive cutters 1 2001
7,703,557 Fixed cutter bit with backup cutter elements on primary blades 6 2007
7,621,348 Drag bits with dropping tendencies and methods for making the same 11 2007
8,127,863 Drill bit having enhanced stabilization features and method of use thereof 0 2008
8,100,202 Fixed cutter bit with backup cutter elements on secondary blades 6 2009
 
DRESSER INDUSTRIES, INC. (6)
D404044 Six blade drill bit 1 1997
D403335 Four blade drill bit 0 1997
D403336 Five blade drill bit 1 1997
D405811 Seven blade drill bit 3 1998
D404407 Eight blade drill bit 0 1998
D403003 Nine blade drill bit 0 1998
 
VAREL INTERNATIONAL IND., L.P. (3)
7,677,333 Drill bit with multiple cutter geometries 0 2006
8,109,346 Drill bit supporting multiple cutting elements with multiple cutter geometries and method of assembly 0 2010
8,327,944 Whipstock attachment to a fixed cutter drilling or milling bit 0 2010
 
HALL, DAVID R., MR. (2)
D678368 Drill bit with a pointed cutting element 0 2010
D674422 Drill bit with a pointed cutting element and a shearing cutting element 0 2010
 
REEDHYCALOG UK LTD. (2)
6,123,161 Rotary drill bits 32 1997
6,065,553 Split blade rotary drag type drill bits 4 1998
 
BANK ONE, TEXAS, NATIONAL ASSOCIATION (1)
5,979,577 Stabilizing drill bit with improved cutting elements 32 1998
 
OTS INTERNATIONAL, INC. (1)
7,726,415 Fixed cutter drill bit 1 2006
 
REEDHYCALOG, L.P. (1)
6,371,226 Drag-type rotary drill bit 4 1999