Rotary drill bits

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO

5671818

SERIAL NO

08541774

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A rotary drill bit for use in drilling holes in subsurface formations comprises a bit body having a leading face and a gauge region, a number of blades formed on the leading face of the bit and extending outwardly away from the axis of the bit so as to define between the blades a number of fluid channels leading towards the gauge region, a number of cutting elements mounted side-by-side along each blade, and a number of nozzles in the bit body for supplying drilling fluid to the fluid channels for cleaning and cooling the cutting elements. In at least one of the fluid channels, adjacent the gauge region, is an opening into an enclosed passage which passes internally through the bit body to an outlet which, in use, communicates with the annulus between the drill string and the wall of the borehole being drilled. The portion of the gauge region outwardly of the opening comprises a bearing surface which, in use bears against the wall of the bore hole and extends across the width of the channel.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
REEDHYCALOG UK LIMITEDSTONEHOUSE72

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Clegg, John M Redland, GB2 10 746
Murdock, Andrew Stonehouse, GB2 15 431
Newton, Alex Houston, TX 9 339
Taylor, Malcolm R Gloucester, GB2 16 667

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 5029657 Rock drill bit 10 1989
 
AKAMAI TECHNOLOGIES, INC. (1)
* 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 73 2009
 
KENNAMETAL INC. (1)
* 5452628 Cold headed center vacuum drill bit 33 1994
 
REEDHYCALOG UK LIMITED (1)
* 5417296 Rotary drill bits 15 1994
 
EXXON PRODUCTION RESEARCH COMPANY (1)
* 5145017 Kerf-cutting apparatus for increased drilling rates 57 1991
 
BAKER HUGHES INCORPORATED (1)
* 5199511 Drill bit and method for reducing formation fluid invasion and for improved drilling in plastic formations 44 1991
 
CAMCO DRILLING GROUP LIMITED (1)
* 5244039 Rotary drill bits 74 1991
 
PETROLEUM PRODUCTS LIMITED (1)
* 4733735 Rotary drill bits 30 1986
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HALLIBURTON ENERGY SERVICES, INC. (4)
8274399 Method and system for predicting performance of a drilling system having multiple cutting structures 2 2007
* 2010/0259,415 Method and System for Predicting Performance of a Drilling System Having Multiple Cutting Structures 26 2007
9249654 Method and system for predicting performance of a drilling system 0 2009
* 2011/0174,541 Method and System for Predicting Performance of a Drilling System 9 2009
 
REEDHYCALOG UK LIMITED (1)
* 5904213 Rotary drill bits 29 1997
 
SMITH INTERNATIONAL, INC. (3)
* 6564886 Drill bit with rows of cutters mounted to present a serrated cutting edge 26 2000
* 7325631 Mill and pump-off sub 2 2005
* 2007/0023,188 Mill and pump-off sub 2 2005
 
CAMCO INTERNATIONAL (UK) LIMITED (4)
* 6092613 Rotary drill bits 40 1998
* 5992547 Rotary drill bits 111 1998
* 5967246 Rotary drill bits 50 1998
6427792 Active gauge cutting structure for earth boring drill bits 31 2000
 
BAKER HUGHES INCORPORATED (11)
* 5794725 Drill bits with enhanced hydraulic flow characteristics 15 1996
* 5836404 Drill bits with enhanced hydraulic flow characteristics 8 1997
* 6079507 Drill bits with enhanced hydraulic flow characteristics 7 1998
* 2009/0084,606 DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING 3 2007
* 2009/0084,607 DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING 1 2007
* 7694755 System, method, and apparatus for variable junk slot depth in drill bit body to alleviate balling 0 2007
* 2009/0095,537 SYSTEM, METHOD, AND APPARATUS FOR VARIABLE JUNK SLOT DEPTH IN DRILL BIT BODY TO ALLEVIATE BALLING 0 2007
7836979 Drill bits and tools for subterranean drilling 1 2008
* 2009/0107,730 DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING 0 2008
8079430 Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of off-center drilling 0 2009
* 2010/0270,077 DRILL BITS AND TOOLS FOR SUBTERRANEAN DRILLING, METHODS OF MANUFACTURING SUCH DRILL BITS AND TOOLS AND METHODS OF OFF-CENTER DRILLING 3 2009
* Cited By Examiner