WO2013101368A1 - Milling tool - Google Patents
Milling toolInfo
- Publication number
- WO2013101368A1 WO2013101368A1 PCT/US2012/066230 US2012066230W WO2013101368A1 WO 2013101368 A1 WO2013101368 A1 WO 2013101368A1 US 2012066230 W US2012066230 W US 2012066230W WO 2013101368 A1 WO2013101368 A1 WO 2013101368A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- milling
- piston
- housing
- length
- milling tool
- Prior art date
Links
- 238000003801 milling Methods 0.000 title claims abstract description 71
- 239000012530 fluid Substances 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 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
-
- 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
- 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
Definitions
- the invention relates generally to the design of milling tools used for enlarging subterranean wellbores.
- Milling tools are used to enlarge or reopen sections of subterranean wellbores. In some instances, milling tools are used to remove casing from sections of wellbores.
- the invention provides improved milling tools and methods for operation of these tools.
- An exemplary milling tool is described which has support arms that are moveable radially outwardly from a housing.
- the support arms have milling blades that carry milling cutters that can cut away the surrounding wellbore.
- each of the milling blades has a length that is at least one-fifth of the length of the housing.
- the milling blades are at least a foot in length.
- milling blades are preferably affixed to the support arms using a dovetail connection.
- the milling arms are moved radially outwardly by a translation mechanism that uses fluid pressure to mechanically urge the milling arms radially outwardly from the housing.
- the translation mechanism includes a piston that is axially moveable with respect to the housing.
- a piston chamber is defined within the housing of the milling tool, and an enlarged diameter piston portion is located within the piston chamber.
- the piston is shifted with respect to the housing by injection of pressurized fluid through the piston and into the piston chamber. Fluid pressure is applied to the enlarged diameter piston portion and shifts the piston axially downwardly with respect to the housing. Downward movement of the piston causes the support arms to be urged radially outwardly. Rotation of the milling tool with the support arms radially extended will enlarge the surrounding borehole.
- Figure 1 is a side, cross-sectional view of a subterranean wellbore containing a running string with an exemplary milling tool constructed in accordance with the present invention.
- Figure 2 is a side, cross-sectional view of an exemplary mill constructed in accordance with the present invention with the mill being in an undeployed condition.
- Figure 3 is a side, cross-sectional view of the mill shown in Figure 2, now in a deployed condition.
- Figure 4 is an axial cross-section taken along lines 4-4 in Figure 2.
- Figure 5 is an axial cross-section taken along lines 5-5 in Figure 3.
- Figure 1 illustrates an exemplary wellbore 10 that has been drilled through the earth 12.
- a running string 14 is shown disposed within the wellbore 10.
- the running string 14 in Figure 1 is constructed of coiled tubing. However, it will be understood by those of skill in the art that the running string 14 might also be constructed of standard production tubing string sections.
- a fluid flowbore 16 is defined along the length of the running string 14.
- the running string 14 includes a milling tool 18 that is constructed in accordance with the present invention. The milling tool 18 is used to enlarge sections of the wellbore 10.
- FIG. 2-5 An exemplary milling tool 18, constructed in accordance with the present invention is shown in greater detail in Figures 2-5.
- the milling tool 18 includes a tubular housing 20 that defines an axial central bore 22 along its length. In the depicted
- the housing 20 is includes an upper end cap 24 that is threadedly secured to a blade housing 26.
- the lower end of the blade housing 26 is threadedly affixed to a lower piston housing 28.
- a piston 30 is disposed within the central bore 22 and is axially moveable between an upper position shown in Figure 2, and a lower position shown in Figure 3.
- the piston 30 includes an upper flow tube portion 32, an enlarged diameter piston portion 34 and a lower flow tube portion 36.
- An axial flow passage 38 is defined along the length of the piston 30.
- Lateral flow openings 40, 42 are formed in the upper flow tube portion 32 and permit fluid communication between the flow passage 38 and the radial exterior of the piston 30.
- the upper flow tube portion 32 presents an outwardly projecting flange 44.
- a fluid flow restriction 45 is provided within the flow passage 38.
- An enlarged diameter piston chamber 46 is formed within the lower piston housing 28, and the piston portion 34 is disposed within the piston chamber 46.
- the piston portion 34 seals against the sidewall of the piston chamber 46.
- a compressible spring 48 also resides within the piston chamber 46 and biases the piston portion 34 of the piston 30 axially upwardly within the piston chamber 46 so that the piston 30 is biased toward the upper position shown in Figure 2.
- a plurality of windows 50 are formed in the blade housing 26. In the depicted embodiment, there are three windows 50. However, those of skill in the art will understand that there may be more or fewer than three.
- a support arm 52 is located within each of the windows 50. Each support arm 52 is radially moveable within its window 50 between a radially retracted position ( Figure 2) and a radially extended position ( Figure 3).
- Milling blades 54 extend radially outwardly from each of the support arms 52. In the depicted embodiment, there are three milling blades 54 that are secured to each support arm 52, resulting in nine total milling blades 54. In a current embodiment, a dovetail attachment is used to secure the milling blades 54 to their support arms 52. Hardened milling cutters 56, of a type known in the art, are secured to each of the milling blades 54. In a particular embodiment, the milling blades 54 have a length that is approximately one-fifth of the total length of the housing 20 or greater. Also in a particular embodiment, the milling blades 54 are at least one foot in length.
- a wedge member 58 is located axially adjacent each of the cutting arms 52.
- the wedge member 58 presents an angled, downwardly- facing slot surface 60 into which the cutting arm 52 is disposed.
- the upper end of the wedge members 58 are in contact with the flange 44 of the piston 30.
- the lower end of each blade window 50 presents an angled upwardly- facing surface 62.
- the running string 14 and attached milling tool 18 are lowered into the wellbore 10 until the milling tool 18 is located adjacent a portion of the wellbore 10 which it is desired to enlarge.
- Pressurized fluid is flowed into the flowbore 16 of the running string 14. Fluid passes downwardly through the axial flow passage 38 of the piston 30 and outwardly through lower lateral flow opening 42 into the piston chamber 46. Fluid pressure will build up above the flow restriction 45.
- fluid pressure will be exerted upon the enlarged diameter piston portion 34 to also urge the piston 30 axially downwardly to compress the spring 48 (see Fig. 3). Applying pressure to the enlarged piston portion 34 to activate the milling tool 10 permits significant force to be generated to move the support arms outwardly.
- the support arms 52 can be retracted by reducing fluid pressure within the flowbore 16 of the running string 14.
- the spring 48 will urge the piston 30 axially upwardly and back to the initial position shown in Figure 2, thereby permitting the support arms 52 to move radially inwardly.
- a milling assembly that is useful for enlarging sections of a wellbore 10.
- a milling assembly is made up of a running string 14 and a milling tool 18 that is affixed to the running string 14.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1410164.6A GB2511680A (en) | 2011-12-28 | 2012-11-21 | Milling tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/338,475 | 2011-12-28 | ||
US13/338,475 US20130168076A1 (en) | 2011-12-28 | 2011-12-28 | Milling Tool |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013101368A1 true WO2013101368A1 (en) | 2013-07-04 |
Family
ID=48693918
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2012/066230 WO2013101368A1 (en) | 2011-12-28 | 2012-11-21 | Milling tool |
Country Status (2)
Country | Link |
---|---|
US (1) | US20130168076A1 (en) |
WO (1) | WO2013101368A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9051793B2 (en) * | 2011-12-13 | 2015-06-09 | Smith International, Inc. | Apparatuses and methods for stabilizing downhole tools |
US9366101B2 (en) | 2012-10-04 | 2016-06-14 | Baker Hughes Incorporated | Cutting and pulling tool with double acting hydraulic piston |
US9725977B2 (en) | 2012-10-04 | 2017-08-08 | Baker Hughes Incorporated | Retractable cutting and pulling tool with uphole milling capability |
US9617815B2 (en) * | 2014-03-24 | 2017-04-11 | Baker Hughes Incorporated | Downhole tools with independently-operated cutters and methods of milling long sections of a casing therewith |
CA2984427C (en) * | 2014-05-01 | 2020-03-10 | Abrado, Inc. | Cutting tool with expandable cutter bases and nose section cutting capability |
FR3022290B1 (en) * | 2014-06-16 | 2019-06-14 | Drillstar Industries | EXTENDABLE TOOL FOR DRILLING |
US10030459B2 (en) | 2014-07-08 | 2018-07-24 | Smith International, Inc. | Thru-casing milling |
WO2017053151A1 (en) | 2015-09-15 | 2017-03-30 | Abrado, Inc. | Downhole tubular milling apparatus, especially suitable for deployment on coiled tubing |
CA3009578A1 (en) | 2015-12-23 | 2017-06-29 | Peak Well Systems Pty Ltd | Expanding and collapsing apparatus and methods of use |
GB201522725D0 (en) | 2015-12-23 | 2016-02-03 | Peak Well Systems Pty Ltd | Expanding and collapsing apparatus and methods of use |
CA3009582A1 (en) * | 2015-12-23 | 2017-06-29 | Peak Well Systems Pty Ltd | Downhole apparatus and methods of use |
EP3394460A1 (en) | 2015-12-23 | 2018-10-31 | Peak Well Services Pty Ltd. | Torque transfer apparatus and methods of use |
GB2563564B (en) * | 2017-04-13 | 2020-09-09 | Weatherford Uk Ltd | Downhole apparatus |
GB2565804B (en) * | 2017-08-23 | 2020-11-18 | Ardyne Holdings Ltd | Downhole tubing milling device and method |
EP3887641A1 (en) * | 2018-11-29 | 2021-10-06 | Abrado, Inc. | Method and apparatus for locking expandable cutters of well bore casing mill |
RU2720628C1 (en) * | 2019-03-01 | 2020-05-12 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Expander for simultaneous drilling and expansion of wells |
CN111894522A (en) * | 2020-07-28 | 2020-11-06 | 合力(天津)能源科技股份有限公司 | Damping hydraulic power type switchable rotary scraping sleeve milling tool |
CN115478801A (en) * | 2021-06-16 | 2022-12-16 | 大庆油田有限责任公司 | Reducing milling cone |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5402856A (en) * | 1993-12-21 | 1995-04-04 | Amoco Corporation | Anti-whirl underreamer |
US6668949B1 (en) * | 1999-10-21 | 2003-12-30 | Allen Kent Rives | Underreamer and method of use |
US20080115973A1 (en) * | 2004-11-01 | 2008-05-22 | Allen Kent Rives | Underreamer And Method Of Use |
US7703553B2 (en) * | 2003-04-30 | 2010-04-27 | Andergauge Limited | Downhole tool having radially extendable members |
US7886834B2 (en) * | 2007-09-18 | 2011-02-15 | Schlumberger Technology Corporation | Anchoring system for use in a wellbore |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126065A (en) * | 1964-03-24 | Chadderdon | ||
US1878260A (en) * | 1929-02-12 | 1932-09-20 | Grant John | Underreamer |
US2170451A (en) * | 1937-06-22 | 1939-08-22 | Grant John | Well reaming tool |
US2427052A (en) * | 1944-06-17 | 1947-09-09 | Grant Oil Tool Company | Oil well tool |
US3208540A (en) * | 1963-03-21 | 1965-09-28 | Baker Oil Tools Inc | Expansible rotary well drilling bit |
AU621088B2 (en) * | 1988-11-22 | 1992-03-05 | Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti | Well expander |
GB0009834D0 (en) * | 2000-04-25 | 2000-06-07 | Brit Bit Limited | Expandable bit |
US7810568B2 (en) * | 2006-10-19 | 2010-10-12 | Baker Hughes Incorporated | Method of making a window in a tubular using an expandable watermelon mill |
US7699120B2 (en) * | 2008-07-09 | 2010-04-20 | Smith International, Inc. | On demand actuation system |
US8172009B2 (en) * | 2010-07-14 | 2012-05-08 | Hall David R | Expandable tool with at least one blade that locks in place through a wedging effect |
-
2011
- 2011-12-28 US US13/338,475 patent/US20130168076A1/en not_active Abandoned
-
2012
- 2012-11-21 WO PCT/US2012/066230 patent/WO2013101368A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5402856A (en) * | 1993-12-21 | 1995-04-04 | Amoco Corporation | Anti-whirl underreamer |
US6668949B1 (en) * | 1999-10-21 | 2003-12-30 | Allen Kent Rives | Underreamer and method of use |
US7703553B2 (en) * | 2003-04-30 | 2010-04-27 | Andergauge Limited | Downhole tool having radially extendable members |
US20080115973A1 (en) * | 2004-11-01 | 2008-05-22 | Allen Kent Rives | Underreamer And Method Of Use |
US7886834B2 (en) * | 2007-09-18 | 2011-02-15 | Schlumberger Technology Corporation | Anchoring system for use in a wellbore |
Also Published As
Publication number | Publication date |
---|---|
US20130168076A1 (en) | 2013-07-04 |
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