GB2446742B - Improved shoe - Google Patents

Improved shoe

Info

Publication number
GB2446742B
GB2446742B GB0809384A GB0809384A GB2446742B GB 2446742 B GB2446742 B GB 2446742B GB 0809384 A GB0809384 A GB 0809384A GB 0809384 A GB0809384 A GB 0809384A GB 2446742 B GB2446742 B GB 2446742B
Authority
GB
United Kingdom
Prior art keywords
improved shoe
shoe
improved
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.)
Active
Application number
GB0809384A
Other versions
GB0809384D0 (en
GB2446742A (en
Inventor
James Bain
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.)
Caledus Ltd
Original Assignee
Caledus 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 GBGB0404170.3A external-priority patent/GB0404170D0/en
Application filed by Caledus Ltd filed Critical Caledus Ltd
Priority to GB0809384A priority Critical patent/GB2446742B/en
Publication of GB0809384D0 publication Critical patent/GB0809384D0/en
Publication of GB2446742A publication Critical patent/GB2446742A/en
Application granted granted Critical
Publication of GB2446742B publication Critical patent/GB2446742B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/14—Casing shoes for the protection of the bottom of the casing
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB0809384A 2004-02-25 2005-02-24 Improved shoe Active GB2446742B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0809384A GB2446742B (en) 2004-02-25 2005-02-24 Improved shoe

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0404170.3A GB0404170D0 (en) 2004-02-25 2004-02-25 Improved shoe
GB0809384A GB2446742B (en) 2004-02-25 2005-02-24 Improved shoe
GB0617319A GB2429731B (en) 2004-02-25 2005-02-24 Improved shoe

Publications (3)

Publication Number Publication Date
GB0809384D0 GB0809384D0 (en) 2008-07-02
GB2446742A GB2446742A (en) 2008-08-20
GB2446742B true GB2446742B (en) 2008-10-01

Family

ID=39639426

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0809384A Active GB2446742B (en) 2004-02-25 2005-02-24 Improved shoe

Country Status (1)

Country Link
GB (1) GB2446742B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2461312B (en) 2008-06-27 2012-06-13 Deep Casing Tools Ltd Reaming tool
GB2482703B (en) * 2010-08-11 2012-08-01 Jan Krzysiek Enlarging boreholes
AU201810865S (en) * 2017-08-17 2018-03-06 Downhole Products Ltd Tubing shoe
CN113898309A (en) * 2020-06-22 2022-01-07 中海油能源发展股份有限公司 Spiral wing collarband mill shoe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001083932A1 (en) * 2000-04-28 2001-11-08 Weatherford/Lamb, Inc. Expandable apparatus for drift and reaming a borehole
US6401820B1 (en) * 1998-01-24 2002-06-11 Downhole Products Plc Downhole tool
US20030075364A1 (en) * 1999-12-09 2003-04-24 Mike Wardley Reamer shoe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6401820B1 (en) * 1998-01-24 2002-06-11 Downhole Products Plc Downhole tool
US20030075364A1 (en) * 1999-12-09 2003-04-24 Mike Wardley Reamer shoe
WO2001083932A1 (en) * 2000-04-28 2001-11-08 Weatherford/Lamb, Inc. Expandable apparatus for drift and reaming a borehole

Also Published As

Publication number Publication date
GB0809384D0 (en) 2008-07-02
GB2446742A (en) 2008-08-20

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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)

Free format text: REGISTERED BETWEEN 20150226 AND 20150304

732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20150813 AND 20150819