GB2338007B - Rotary drill bits - Google Patents

Rotary drill bits

Info

Publication number
GB2338007B
GB2338007B GB9911920A GB9911920A GB2338007B GB 2338007 B GB2338007 B GB 2338007B GB 9911920 A GB9911920 A GB 9911920A GB 9911920 A GB9911920 A GB 9911920A GB 2338007 B GB2338007 B GB 2338007B
Authority
GB
United Kingdom
Prior art keywords
drill bits
rotary drill
rotary
bits
drill
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB9911920A
Other versions
GB9911920D0 (en
GB2338007A (en
Inventor
Terry Richard Matthias
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ReedHycalog UK Ltd
Original Assignee
Camco International UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9811705.4A external-priority patent/GB9811705D0/en
Application filed by Camco International UK Ltd filed Critical Camco International UK Ltd
Priority to GB9911920A priority Critical patent/GB2338007B/en
Publication of GB9911920D0 publication Critical patent/GB9911920D0/en
Publication of GB2338007A publication Critical patent/GB2338007A/en
Application granted granted Critical
Publication of GB2338007B publication Critical patent/GB2338007B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/5676—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
    • E21B10/5735—Interface between the substrate and the cutting element
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
GB9911920A 1998-06-02 1999-05-24 Rotary drill bits Expired - Lifetime GB2338007B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9911920A GB2338007B (en) 1998-06-02 1999-05-24 Rotary drill bits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9811705.4A GB9811705D0 (en) 1998-06-02 1998-06-02 Preform cutting elements for rotary drill bits
GB9911920A GB2338007B (en) 1998-06-02 1999-05-24 Rotary drill bits

Publications (3)

Publication Number Publication Date
GB9911920D0 GB9911920D0 (en) 1999-07-21
GB2338007A GB2338007A (en) 1999-12-08
GB2338007B true GB2338007B (en) 2003-01-22

Family

ID=26313772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9911920A Expired - Lifetime GB2338007B (en) 1998-06-02 1999-05-24 Rotary drill bits

Country Status (1)

Country Link
GB (1) GB2338007B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2454016C (en) 2002-12-23 2009-05-12 Smith International, Inc. Ribless bit with diamond impregnated cutter elements

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435403A (en) * 1993-12-09 1995-07-25 Baker Hughes Incorporated Cutting elements with enhanced stiffness and arrangements thereof on earth boring drill bits
EP0687797A1 (en) * 1994-06-18 1995-12-20 Camco Drilling Group Limited Improvements in or relating to elements faced with superhard material
EP0692607A2 (en) * 1994-06-16 1996-01-17 De Beers Industrial Diamond Division (Proprietary) Limited Tool component with abrasive compact
US5605198A (en) * 1993-12-09 1997-02-25 Baker Hughes Incorporated Stress related placement of engineered superabrasive cutting elements on rotary drag bits
EP0936012A1 (en) * 1998-02-13 1999-08-18 Camco International (UK) Limited Elements faced with superhard material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435403A (en) * 1993-12-09 1995-07-25 Baker Hughes Incorporated Cutting elements with enhanced stiffness and arrangements thereof on earth boring drill bits
US5605198A (en) * 1993-12-09 1997-02-25 Baker Hughes Incorporated Stress related placement of engineered superabrasive cutting elements on rotary drag bits
EP0692607A2 (en) * 1994-06-16 1996-01-17 De Beers Industrial Diamond Division (Proprietary) Limited Tool component with abrasive compact
EP0687797A1 (en) * 1994-06-18 1995-12-20 Camco Drilling Group Limited Improvements in or relating to elements faced with superhard material
EP0936012A1 (en) * 1998-02-13 1999-08-18 Camco International (UK) Limited Elements faced with superhard material

Also Published As

Publication number Publication date
GB9911920D0 (en) 1999-07-21
GB2338007A (en) 1999-12-08

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20190523