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GB9420839D0 - Improvements in or relating to rotary drill bits - Google Patents

Improvements in or relating to rotary drill bits

Info

Publication number
GB9420839D0
GB9420839D0 GB9420839A GB9420839A GB9420839D0 GB 9420839 D0 GB9420839 D0 GB 9420839D0 GB 9420839 A GB9420839 A GB 9420839A GB 9420839 A GB9420839 A GB 9420839A GB 9420839 D0 GB9420839 D0 GB 9420839D0
Authority
GB
United Kingdom
Prior art keywords
relating
drill bits
rotary drill
rotary
bits
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.)
Pending
Application number
GB9420839A
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.)
Camco Drilling Group Ltd
Original Assignee
Camco Drilling Group 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
Application filed by Camco Drilling Group Ltd filed Critical Camco Drilling Group Ltd
Priority to GB9420839A priority Critical patent/GB9420839D0/en
Publication of GB9420839D0 publication Critical patent/GB9420839D0/en
Priority to EP01113872A priority patent/EP1134355A3/en
Priority to EP95306936A priority patent/EP0707130B1/en
Priority to GB9519835A priority patent/GB2294069B/en
Priority to DE69531277T priority patent/DE69531277T2/en
Priority to US08/538,759 priority patent/US5649604A/en
Pending legal-status Critical Current

Links

GB9420839A 1994-10-15 1994-10-15 Improvements in or relating to rotary drill bits Pending GB9420839D0 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB9420839A GB9420839D0 (en) 1994-10-15 1994-10-15 Improvements in or relating to rotary drill bits
EP01113872A EP1134355A3 (en) 1994-10-15 1995-09-29 Rotary drill bit
EP95306936A EP0707130B1 (en) 1994-10-15 1995-09-29 Rotary drill bits
GB9519835A GB2294069B (en) 1994-10-15 1995-09-29 Improvements in or relating to rotary drills bits
DE69531277T DE69531277T2 (en) 1994-10-15 1995-09-29 A rotary drill bit
US08/538,759 US5649604A (en) 1994-10-15 1995-10-03 Rotary drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9420839A GB9420839D0 (en) 1994-10-15 1994-10-15 Improvements in or relating to rotary drill bits

Publications (1)

Publication Number Publication Date
GB9420839D0 true GB9420839D0 (en) 1994-11-30

Family

ID=10762922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9420839A Pending GB9420839D0 (en) 1994-10-15 1994-10-15 Improvements in or relating to rotary drill bits

Country Status (2)

Country Link
EP (1) EP1134355A3 (en)
GB (1) GB9420839D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2404889A (en) * 2003-08-12 2005-02-16 Black & Decker Inc A cutting plate for a drill bit
EP2118431B1 (en) 2007-02-12 2011-11-23 Baker Hughes Incorporated Rotary drag bit
WO2009045269A1 (en) 2007-10-03 2009-04-09 Millipore Corporation Stacked plates filtration cartridge
CN108222845B (en) * 2018-04-09 2024-04-26 成都百施特金刚石钻头有限公司 Annular cutting alloy tooth for drilling and production tool
CN113404436B (en) * 2021-07-29 2022-08-09 东北石油大学 Directional double-tooth self-balancing PDC drill bit suitable for soft and hard interlayer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4140189A (en) * 1977-06-06 1979-02-20 Smith International, Inc. Rock bit with diamond reamer to maintain gage
US4475606A (en) * 1982-08-09 1984-10-09 Dresser Industries, Inc. Drag bit
US5178222A (en) * 1991-07-11 1993-01-12 Baker Hughes Incorporated Drill bit having enhanced stability
US5238075A (en) * 1992-06-19 1993-08-24 Dresser Industries, Inc. Drill bit with improved cutter sizing pattern

Also Published As

Publication number Publication date
EP1134355A3 (en) 2002-03-06
EP1134355A2 (en) 2001-09-19

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