GB2305198B - Apparatus for milling a well casing - Google Patents

Apparatus for milling a well casing

Info

Publication number
GB2305198B
GB2305198B GB9701603A GB9701603A GB2305198B GB 2305198 B GB2305198 B GB 2305198B GB 9701603 A GB9701603 A GB 9701603A GB 9701603 A GB9701603 A GB 9701603A GB 2305198 B GB2305198 B GB 2305198B
Authority
GB
United Kingdom
Prior art keywords
milling
well casing
casing
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 - Lifetime
Application number
GB9701603A
Other versions
GB9701603D0 (en
GB2305198A (en
Inventor
Bruce Hermann Forsyth Mcgarian
Werner Lau
Rory Mccrae Tulloch
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 GB9419222A external-priority patent/GB9419222D0/en
Priority claimed from GB9422837A external-priority patent/GB9422837D0/en
Application filed by RED BARON filed Critical RED BARON
Priority to GB9701603A priority Critical patent/GB2305198B/en
Publication of GB9701603D0 publication Critical patent/GB9701603D0/en
Publication of GB2305198A publication Critical patent/GB2305198A/en
Application granted granted Critical
Publication of GB2305198B publication Critical patent/GB2305198B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like
    • 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
    • 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
    • E21B29/06—Cutting windows, e.g. directional window cutters for whipstock operations
GB9701603A 1994-09-23 1995-09-25 Apparatus for milling a well casing Expired - Lifetime GB2305198B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9701603A GB2305198B (en) 1994-09-23 1995-09-25 Apparatus for milling a well casing

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9419222A GB9419222D0 (en) 1994-09-23 1994-09-23 Apparatus for milling a well casing
GB9422837A GB9422837D0 (en) 1994-09-23 1994-11-11 Apparatus for milling a well casing
GB9701603A GB2305198B (en) 1994-09-23 1995-09-25 Apparatus for milling a well casing
PCT/GB1995/002267 WO1996009460A2 (en) 1994-09-23 1995-09-25 Apparatus for milling a well casing

Publications (3)

Publication Number Publication Date
GB9701603D0 GB9701603D0 (en) 1997-03-19
GB2305198A GB2305198A (en) 1997-04-02
GB2305198B true GB2305198B (en) 1997-11-19

Family

ID=27267390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9701603A Expired - Lifetime GB2305198B (en) 1994-09-23 1995-09-25 Apparatus for milling a well casing

Country Status (1)

Country Link
GB (1) GB2305198B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105721A (en) * 1935-06-04 1938-01-18 George J Barrett And Sosthene Whipstock
US2669429A (en) * 1951-11-06 1954-02-16 John A Zublin Apparatus for drilling deviating bores utilizing a plurality of curved tubular drillguide sections
US2669430A (en) * 1951-11-06 1954-02-16 John A Zublin Apparatus for drilling deviating bores utilizing a plurality of straight tubular drill guide sections
US2807440A (en) * 1953-08-10 1957-09-24 J E Hill Directional window cutter for whipstocks
US3602306A (en) * 1970-04-27 1971-08-31 Gem Tool Corp Blow-up preventer
US5186254A (en) * 1989-11-22 1993-02-16 Staden Pieter R Van Borehole pumping installation
US5277251A (en) * 1992-10-09 1994-01-11 Blount Curtis G Method for forming a window in a subsurface well conduit
US5346017A (en) * 1993-09-27 1994-09-13 Atlantic Richfield Company Method and apparatus for setting a whipstock
WO1995007404A2 (en) * 1993-09-10 1995-03-16 Weatherford U.S., Inc Apparatus for use in a wellbore

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105721A (en) * 1935-06-04 1938-01-18 George J Barrett And Sosthene Whipstock
US2669429A (en) * 1951-11-06 1954-02-16 John A Zublin Apparatus for drilling deviating bores utilizing a plurality of curved tubular drillguide sections
US2669430A (en) * 1951-11-06 1954-02-16 John A Zublin Apparatus for drilling deviating bores utilizing a plurality of straight tubular drill guide sections
US2807440A (en) * 1953-08-10 1957-09-24 J E Hill Directional window cutter for whipstocks
US3602306A (en) * 1970-04-27 1971-08-31 Gem Tool Corp Blow-up preventer
US5186254A (en) * 1989-11-22 1993-02-16 Staden Pieter R Van Borehole pumping installation
US5277251A (en) * 1992-10-09 1994-01-11 Blount Curtis G Method for forming a window in a subsurface well conduit
WO1995007404A2 (en) * 1993-09-10 1995-03-16 Weatherford U.S., Inc Apparatus for use in a wellbore
US5346017A (en) * 1993-09-27 1994-09-13 Atlantic Richfield Company Method and apparatus for setting a whipstock

Also Published As

Publication number Publication date
GB9701603D0 (en) 1997-03-19
GB2305198A (en) 1997-04-02

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Legal Events

Date Code Title Description
727 Application made for amendment of specification (sect. 27/1977)
727A Application for amendment of specification now open to opposition (sect. 27/1977)
727B Case decided by the comptroller ** specification amended (sect. 27/1977)
SP Amendment (slips) printed
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20150924