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GB2305952B - Milling of well casings - Google Patents

Milling of well casings

Info

Publication number
GB2305952B
GB2305952B GB9620851A GB9620851A GB2305952B GB 2305952 B GB2305952 B GB 2305952B GB 9620851 A GB9620851 A GB 9620851A GB 9620851 A GB9620851 A GB 9620851A GB 2305952 B GB2305952 B GB 2305952B
Authority
GB
United Kingdom
Prior art keywords
milling
well casings
casings
well
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
GB9620851A
Other versions
GB2305952A (en
GB9620851D0 (en
Inventor
Ronald James Bruce
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.)
RED BARON
Original Assignee
RED BARON
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 GBGB9520347.7A external-priority patent/GB9520347D0/en
Application filed by RED BARON filed Critical RED BARON
Priority to GB9620851A priority Critical patent/GB2305952B/en
Publication of GB9620851D0 publication Critical patent/GB9620851D0/en
Publication of GB2305952A publication Critical patent/GB2305952A/en
Application granted granted Critical
Publication of GB2305952B publication Critical patent/GB2305952B/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
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/20—Drives for drilling, used in the borehole combined with surface drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
GB9620851A 1995-10-05 1996-10-07 Milling of well casings Expired - Fee Related GB2305952B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9620851A GB2305952B (en) 1995-10-05 1996-10-07 Milling of well casings

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9520347.7A GB9520347D0 (en) 1995-10-05 1995-10-05 Milling of well castings
GB9620851A GB2305952B (en) 1995-10-05 1996-10-07 Milling of well casings

Publications (3)

Publication Number Publication Date
GB9620851D0 GB9620851D0 (en) 1996-11-27
GB2305952A GB2305952A (en) 1997-04-23
GB2305952B true GB2305952B (en) 1999-02-17

Family

ID=26307886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9620851A Expired - Fee Related GB2305952B (en) 1995-10-05 1996-10-07 Milling of well casings

Country Status (1)

Country Link
GB (1) GB2305952B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481767A1 (en) * 1990-10-16 1992-04-22 The Red Baron (Oil Tools Rental) Limited Tubing cutting tool
WO1993019281A1 (en) * 1992-03-25 1993-09-30 Atlantic Richfield Company Well conduit cutting and milling apparatus and method
US5392858A (en) * 1994-04-15 1995-02-28 Penetrators, Inc. Milling apparatus and method for well casing
WO1996009460A2 (en) * 1994-09-23 1996-03-28 The Red Baron (Oil Tools Rental) Limited Apparatus for milling a well casing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481767A1 (en) * 1990-10-16 1992-04-22 The Red Baron (Oil Tools Rental) Limited Tubing cutting tool
WO1993019281A1 (en) * 1992-03-25 1993-09-30 Atlantic Richfield Company Well conduit cutting and milling apparatus and method
US5392858A (en) * 1994-04-15 1995-02-28 Penetrators, Inc. Milling apparatus and method for well casing
WO1996009460A2 (en) * 1994-09-23 1996-03-28 The Red Baron (Oil Tools Rental) Limited Apparatus for milling a well casing

Also Published As

Publication number Publication date
GB2305952A (en) 1997-04-23
GB9620851D0 (en) 1996-11-27

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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: 20131007