GB2263489B - A drill bit - Google Patents

A drill bit

Info

Publication number
GB2263489B
GB2263489B GB9201200A GB9201200A GB2263489B GB 2263489 B GB2263489 B GB 2263489B GB 9201200 A GB9201200 A GB 9201200A GB 9201200 A GB9201200 A GB 9201200A GB 2263489 B GB2263489 B GB 2263489B
Authority
GB
United Kingdom
Prior art keywords
drill bit
drill
bit
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 - Fee Related
Application number
GB9201200A
Other versions
GB2263489A (en
GB9201200D0 (en
Inventor
Keith Thomas Skinner
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.)
Xcalibre Equipment Ltd
Original Assignee
Xcalibre Equipment 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 Xcalibre Equipment Ltd filed Critical Xcalibre Equipment Ltd
Priority to GB9201200A priority Critical patent/GB2263489B/en
Publication of GB9201200D0 publication Critical patent/GB9201200D0/en
Publication of GB2263489A publication Critical patent/GB2263489A/en
Application granted granted Critical
Publication of GB2263489B publication Critical patent/GB2263489B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
    • 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • 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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
GB9201200A 1992-01-21 1992-01-21 A drill bit Expired - Fee Related GB2263489B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9201200A GB2263489B (en) 1992-01-21 1992-01-21 A drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9201200A GB2263489B (en) 1992-01-21 1992-01-21 A drill bit

Publications (3)

Publication Number Publication Date
GB9201200D0 GB9201200D0 (en) 1992-03-11
GB2263489A GB2263489A (en) 1993-07-28
GB2263489B true GB2263489B (en) 1995-03-22

Family

ID=10708934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9201200A Expired - Fee Related GB2263489B (en) 1992-01-21 1992-01-21 A drill bit

Country Status (1)

Country Link
GB (1) GB2263489B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306987B (en) * 1995-11-04 1999-08-11 Xcalibre Equipment Ltd Drill chuck
GB9522651D0 (en) 1995-11-04 1996-01-03 Xcalibre Equipment Ltd Drill chuck
BE1013336A3 (en) * 2000-03-01 2001-12-04 Diamant Boart Nv Tubular drill.
US6908264B1 (en) * 2002-11-06 2005-06-21 William P. Gundy Quick change drill bit
GB2437961B (en) * 2006-05-06 2008-06-25 Geoffrey Kevin Ellison Environmental improvements for drilling on landfill sites

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657445A (en) * 1984-03-12 1987-04-14 Joseph Bossler Core drill and method of removing a core therefrom

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4657445A (en) * 1984-03-12 1987-04-14 Joseph Bossler Core drill and method of removing a core therefrom

Also Published As

Publication number Publication date
GB2263489A (en) 1993-07-28
GB9201200D0 (en) 1992-03-11

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110121