CA2167947A1 - Downhole milling tool - Google Patents
Downhole milling toolInfo
- Publication number
- CA2167947A1 CA2167947A1 CA002167947A CA2167947A CA2167947A1 CA 2167947 A1 CA2167947 A1 CA 2167947A1 CA 002167947 A CA002167947 A CA 002167947A CA 2167947 A CA2167947 A CA 2167947A CA 2167947 A1 CA2167947 A1 CA 2167947A1
- Authority
- CA
- Canada
- Prior art keywords
- cutting
- blades
- casing strings
- casing
- milling tool
- 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.)
- Granted
Links
- 238000003801 milling Methods 0.000 title abstract 2
- 239000002184 metal Substances 0.000 abstract 1
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
- B23B5/167—Tools for chamfering the ends of bars or tubes
- B23B5/168—Tools for chamfering the ends of bars or tubes with guiding devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
-
- 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
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- 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
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
-
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/11—Cutters, for shaping including chip breaker, guide or deflector detachable from tool and tool holder
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T407/00—Cutters, for shaping
- Y10T407/24—Cutters, for shaping with chip breaker, guide or deflector
- Y10T407/245—Cutters, for shaping with chip breaker, guide or deflector comprising concave surface in cutting face of tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/78—Tool of specific diverse material
Abstract
A tool (22) for cutting or milling casing in a well is disclosed.
It includes a plurality of blades (36) extending outwardly to a substantially radial position for cutting the walls of casing strings and removing a predetermined length of the casing strings in a cutting action. The blades have cutting elements (66) positioned on leading faces (68) of the blades to engage the casing strings in a cutting action without tripping or removal from the bore hole. The cutting element (66) has surface irregularities (78) to cause the metal chips cut from the casings to break off at short lengths. The cutting element (66) can also have stress relieving grooves (80) to prevent the propagation of a crack across the face of the element.
It includes a plurality of blades (36) extending outwardly to a substantially radial position for cutting the walls of casing strings and removing a predetermined length of the casing strings in a cutting action. The blades have cutting elements (66) positioned on leading faces (68) of the blades to engage the casing strings in a cutting action without tripping or removal from the bore hole. The cutting element (66) has surface irregularities (78) to cause the metal chips cut from the casings to break off at short lengths. The cutting element (66) can also have stress relieving grooves (80) to prevent the propagation of a crack across the face of the element.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/096,010 US5373900A (en) | 1988-04-15 | 1993-07-22 | Downhole milling tool |
US08/096,010 | 1993-07-22 | ||
PCT/US1994/000880 WO1995003473A1 (en) | 1993-07-22 | 1994-01-21 | Downhole milling tool |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2167947A1 true CA2167947A1 (en) | 1995-02-02 |
CA2167947C CA2167947C (en) | 2004-10-05 |
Family
ID=22254658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002167947A Expired - Lifetime CA2167947C (en) | 1993-07-22 | 1994-01-21 | Downhole milling tool |
Country Status (5)
Country | Link |
---|---|
US (4) | US5373900A (en) |
EP (1) | EP0708873A1 (en) |
AU (1) | AU7333394A (en) |
CA (1) | CA2167947C (en) |
WO (2) | WO1995003473A1 (en) |
Families Citing this family (133)
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---|---|---|---|---|
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-
1993
- 1993-07-22 US US08/096,010 patent/US5373900A/en not_active Expired - Lifetime
-
1994
- 1994-01-21 EP EP94907883A patent/EP0708873A1/en not_active Withdrawn
- 1994-01-21 WO PCT/US1994/000880 patent/WO1995003473A1/en not_active Application Discontinuation
- 1994-01-21 CA CA002167947A patent/CA2167947C/en not_active Expired - Lifetime
- 1994-07-14 AU AU73333/94A patent/AU7333394A/en not_active Withdrawn
- 1994-07-14 WO PCT/US1994/007911 patent/WO1995003474A1/en unknown
- 1994-10-17 US US08/323,815 patent/US5456312A/en not_active Expired - Lifetime
-
1995
- 1995-10-10 US US08/541,551 patent/US5810079A/en not_active Expired - Lifetime
-
1997
- 1997-10-28 US US08/958,829 patent/US5899268A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2167947C (en) | 2004-10-05 |
EP0708873A1 (en) | 1996-05-01 |
WO1995003474A1 (en) | 1995-02-02 |
US5899268A (en) | 1999-05-04 |
US5810079A (en) | 1998-09-22 |
US5373900A (en) | 1994-12-20 |
AU7333394A (en) | 1995-02-20 |
US5456312A (en) | 1995-10-10 |
WO1995003473A1 (en) | 1995-02-02 |
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Legal Events
Date | Code | Title | Description |
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EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20140121 |