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)

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Abstract

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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, TX1011

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Keith, Carl W Spring, TX 27 733
Mensa-Wilmot, Graham Houston, TX 33 734

Cited Art Landscape

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 31 1981
4,475,606 Drag bit 30 1982
4,545,441 Drill bits with polycrystalline diamond cutting elements mounted on serrated supports pressed in drill head 51 1984
5,033,560 Drill bit with decreasing diameter cutters 30 1990
 
HALLIBURTON ENERGY SERVICES, INC. (4)
RE33757 Diamond drill bit with varied cutting elements 14 1990
5,265,685 Drill bit with improved insert cutter pattern 44 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 23 1993
 
AMOCO CORPORATION (3)
4,932,484 Whirl resistant bit 76 1989
5,131,478 Low friction subterranean drill bit and related methods 104 1990
RE34435 Whirl resistant bit 43 1992
 
REEDHYCALOG UK LTD. (3)
4,942,933 Relating to rotary drill bits 27 1988
5,186,268 Rotary drill bits 104 1991
5,222,566 Rotary drill bits and methods of designing such drill bits 96 1992
 
BAKER HUGHES INCORPORATED (2)
5,178,222 Drill bit having enhanced stability 41 1991
5,377,773 Drill bit having combined positive and negative or neutral rake cutters 33 1993
 
EASTMAN CHRISTENSEN COMPANY (2)
4,471,845 Rotary drill bit 40 1982
4,512,426 Rotating bits including a plurality of types of preferential cutting elements 51 1983
 
CAMCO DRILLING GROUP LIMITED (1)
5,244,039 Rotary drill bits 56 1991
 
REED HYCALOG OPERATING LP (1)
4,444,281 Combination drag and roller cutter drill bit 39 1983
 
REEDHYCALOG, L.P. (1)
4,718,505 Rotary drill bits 56 1985

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BAKER HUGHES INCORPORATED (14)
5,960,896 Rotary drill bits employing optimal cutter placement based on chamfer geometry 24 1997
6,186,251 Method of altering a balance characteristic and moment configuration of a drill bit and drill bit 81 1998
6,302,223 Rotary drag bit with enhanced hydraulic and stabilization characteristics 24 1999
6,510,906 Impregnated bit with PDC cutters in cone area 141 2000
6,575,256 Drill bit with lateral movement mitigation and method of subterranean drilling 14 2000
6,536,543 Rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles 15 2000
6,843,333 Impregnated rotary drag bit 41 2002
6,711,969 Methods for designing rotary drill bits exhibiting sequences of substantially continuously variable cutter backrake angles 14 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 4 2007
7,861,809 Rotary drag bit with multiple backup cutters 2 2008
7,762,355 Rotary drag bit and methods therefor 2 2008
8,500,833 Abrasive article and method of forming 0 2010
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. (9)
6,164,394 Drill bit with rows of cutters mounted to present a serrated cutting edge 28 1996
6,564,886 Drill bit with rows of cutters mounted to present a serrated cutting edge 20 2000
6,863,138 High offset bits with super-abrasive cutters 1 2001
8,448,725 Impact resistant PDC drill bit 0 2004
7,703,557 Fixed cutter bit with backup cutter elements on primary blades 9 2007
7,621,348 Drag bits with dropping tendencies and methods for making the same 13 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 7 2009
8,689,908 Drill bit having enhanced stabilization features and method of use thereof 0 2012
 
DRESSER INDUSTRIES, INC. (6)
D404044 Six blade drill bit 1 1997
D403335 Four blade drill bit 1 1997
D403336 Five blade drill bit 2 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. (5)
7,677,333 Drill bit with multiple cutter geometries 1 2006
8,109,346 Drill bit supporting multiple cutting elements with multiple cutter geometries and method of assembly 0 2010
8,517,123 Milling cap for a polycrystalline diamond compact cutter 0 2010
8,327,944 Whipstock attachment to a fixed cutter drilling or milling bit 0 2010
8,561,729 Casing bit and casing reamer designs 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 40 1997
6,065,553 Split blade rotary drag type drill bits 4 1998
 
BANK ONE, TEXAS, N.A., A NATIONAL BANKING ASSOCIATION (1)
5,979,577 Stabilizing drill bit with improved cutting elements 42 1998
 
DOWNHOLE PRODUCTS LIMITED (1)
8,657,036 Tubing shoe 0 2010
 
ELEMENT SIX LIMITED (1)
8,757,299 Cutting element and method of forming thereof 0 2010
 
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 8 1999
 
Varel International, Inc., L.P. (1)
8,544,568 Shoulder durability enhancement for a PDC drill bit using secondary and tertiary cutting elements 0 2010

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