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GB2242379B - Junk mill - Google Patents

Junk mill

Info

Publication number
GB2242379B
GB2242379B GB9106006A GB9106006A GB2242379B GB 2242379 B GB2242379 B GB 2242379B GB 9106006 A GB9106006 A GB 9106006A GB 9106006 A GB9106006 A GB 9106006A GB 2242379 B GB2242379 B GB 2242379B
Authority
GB
United Kingdom
Prior art keywords
junk mill
junk
mill
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
GB9106006A
Other versions
GB9106006D0 (en
GB2242379A (en
Inventor
Horace Edward Gilbert
Graham Robert Stronach
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.)
Smith International Inc
Original Assignee
Smith International Inc
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 Smith International Inc filed Critical Smith International Inc
Publication of GB9106006D0 publication Critical patent/GB9106006D0/en
Publication of GB2242379A publication Critical patent/GB2242379A/en
Application granted granted Critical
Publication of GB2242379B publication Critical patent/GB2242379B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
    • E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
GB9106006A 1990-03-29 1991-03-21 Junk mill Expired - Fee Related GB2242379B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909007023A GB9007023D0 (en) 1990-03-29 1990-03-29 Junk mill

Publications (3)

Publication Number Publication Date
GB9106006D0 GB9106006D0 (en) 1991-05-08
GB2242379A GB2242379A (en) 1991-10-02
GB2242379B true GB2242379B (en) 1993-07-28

Family

ID=10673466

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909007023A Pending GB9007023D0 (en) 1990-03-29 1990-03-29 Junk mill
GB9106006A Expired - Fee Related GB2242379B (en) 1990-03-29 1991-03-21 Junk mill

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909007023A Pending GB9007023D0 (en) 1990-03-29 1990-03-29 Junk mill

Country Status (2)

Country Link
GB (2) GB9007023D0 (en)
NO (1) NO911265L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109723385A (en) * 2019-01-17 2019-05-07 西南石油大学 PDC Bits with Gauge and Reducer Functions

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577545A1 (en) * 1992-06-19 1994-01-05 Broder Ag Drill bit
CN2685530Y (en) * 2004-03-09 2005-03-16 伍利钱 Drill bits for enlarging the borehole
US7753139B2 (en) * 2005-07-06 2010-07-13 Smith International, Inc. Cutting device with multiple cutting structures
US8186458B2 (en) 2005-07-06 2012-05-29 Smith International, Inc. Expandable window milling bit and methods of milling a window in casing
GB2569330B (en) 2017-12-13 2021-01-06 Nov Downhole Eurasia Ltd Downhole devices and associated apparatus and methods
DE102018105340A1 (en) * 2018-03-08 2019-09-12 Mhwirth Gmbh Drilling head and this comprehensive drilling system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB987953A (en) * 1962-09-07 1965-03-31 Servco Co Apparatus for cutting and milling in well bores

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB987953A (en) * 1962-09-07 1965-03-31 Servco Co Apparatus for cutting and milling in well bores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109723385A (en) * 2019-01-17 2019-05-07 西南石油大学 PDC Bits with Gauge and Reducer Functions

Also Published As

Publication number Publication date
NO911265L (en) 1991-09-30
NO911265D0 (en) 1991-03-27
GB9106006D0 (en) 1991-05-08
GB2242379A (en) 1991-10-02
GB9007023D0 (en) 1990-05-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980321