WO2006020206A2 - Coiled tubing conveyed milling - Google Patents
Coiled tubing conveyed milling Download PDFInfo
- Publication number
- WO2006020206A2 WO2006020206A2 PCT/US2005/025405 US2005025405W WO2006020206A2 WO 2006020206 A2 WO2006020206 A2 WO 2006020206A2 US 2005025405 W US2005025405 W US 2005025405W WO 2006020206 A2 WO2006020206 A2 WO 2006020206A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- debris
- passage
- catcher
- debris catcher
- screen
- Prior art date
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
- E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
- E21B27/005—Collecting means with a strainer
-
- 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
Definitions
- the field of the invention related to milling downhole with a bottom hole assembly delivered on coiled tubing with provisions to absorb torque reaction from milling and to collect generated debris near the milling location.
- the present invention permits small coiled tubing to support large mud motors for big milling jobs.
- the coiled tubing is anchored in position and the mud motor operates the mill in conjunction with a thruster to keep the mill on the tool being milled.
- Other variations are envisioned that secure the coiled tubing against torque reaction while allowing the mill to progress and mill out downhole.
- An improved debris catcher is incorporated into the assembly with greater debris retention capacity and other operational enhancements to improve its operation.
- Milling in casing that is over 4-1/2 inches is done with coiled tubing that is anchored against torque reaction.
- An improved debris catcher is part of the bottom hole assembly to capture cuttings from the milling.
- a thruster can be used to maintain weight on the mill during the milling.
- the coiled tubing supports a mud motor to drive the mill. Return fluid is separated from the cuttings and returned to the surface.
- Figures la-e are a sectional elevation of the bottom hole assembly for coiled tubing milling.
- coiled tubing 10 is run into casing 12.
- the anchor 18 is preferably of a known design as described in U.S. Patent 6,276,452. It features extending gripping members 20 and 22 that are hydraulically actuated by fluid circulation down the coiled tubing 10.
- a connection 24 is at the lower end of the anchor 18 to attach the debris catcher 26.
- the debris catcher 26 runs from upper end 28 to lower end 30 in Figure Ic.
- a jet sub 34 is connected to lower end 30.
- a mud motor 36 (shown schematically) is connected to jet sub 34.
- a thruster 38 (shown schematically) is connected to mud motor 36.
- a mill 40 is connected to the thruster 38. Mill 40 comes in contact with the object 42 (shown schematically) to be milled in the wellbore. That object 42 could be a packer, a bridge plug, another downhole tool, or a section of casing or tubular. Depending on the specific attributes of the components selected they can be attached in different orders.
- the thruster 38 can be optionally omitted and instead the anchor 18 can be repositioned periodically during the milling by cutting circulation to release the anchor 18 and letting the assembly move down to a new position. At that time the circulation can begin again and the anchor 18 will take another grip of the casing 12.
- the anchor 18 is above the mud motor 36 to isolate the coiled tubing 10 from reaction torque from the mill 40 milling the object 42.
- the coiled tubing 10 can be sized as small as practicable to not only support the load of the bottom hole assembly but also to keep the pressure drop in flow passage 32 at a reasonable level. Initiating flow through the coiled tubing 10 will set the anchor 18 first before any significant milling by mill 40 can take place. At that point the coiled tubing is protected from reaction torque transmitted through the mud motor 36.
- the mud motor 36 can be of a type known in the art as well as the thruster 38 whose purpose is to keep weight on the mill 40 to hold it against the object 42 for efficient milling. As long as the anchor 18 is properly sized for the casing 12, the other components simply need to be small enough to easily pass through the casing 12.
- the illustrated assembly can be rapidly deployed at the surface without a workover rig and the trip time to reach the object 42 to be milled can be greatly reduced as compared to running the bottom hole assembly on rigid tubing.
- Objects 42 in casing sizes larger than 4-1/2" can be easily milled out with coiled tubing smaller than 3-1/2 inches in diameter. It is conceivable that coil tubing as small as 1-1/4" could be used to support milling equipment in casing as large as 9-5/8" or larger.
- a diverter sub 44 has downhole-oriented passages 46 spaced apart from uphole return passages 48.
- Arrow 50 shows the flow beyond passages 46 and around the outside of sleeve 52 that is secured at thread 54 to the diverter sub 44.
- Flow continues through annular space 56 between the sleeve 52 and the outer screen housing 57 and emerges in Figure Ic as arrow 50.
- the flow 50 emerges in an annular space 58 around a diverter tube 60.
- Seals 62 seal around diverter tube 60. Accordingly the pressure is directed downwardly through the inside of sleeve 64 as shown by arrow 66 and outside sleeve 64 as shown by arrow 68.
- Flow 68 encounters a piston 70 that has a movable bearing 72 below it and a pack off sleeve 74 below the bearing 72.
- a return spring 76 biases the pack off sleeve 74 uphole to a retracted position.
- Pressure on piston 70 represented by arrow 68 pushes the piston 70 and bearing 72 downhole against the pack off sleeve 74.
- a stationary ramp 78 catches the lower end 80 of the pack off sleeve 74 to force it out into sealing contact with the casing 12. In this manner, the pack off sleeve 74 is protected from damage during run in or removal because the return spring 76 keeps it retracted and away from casing 12 until circulation through passage 32 in coiled tubing 10 is established.
- Another bearing 82 is supported by reverse flow sub 84. Together bearings 72 and 82 allow the pack off sleeve 74 to rotate relative to the sleeve 64 to promote sealing and to minimize wear on the pack off sleeve
- the flow 66 through sleeve 64 emerges near lower end 30 of the debris catcher 26 in a chamber 86 between restrictor 88 and venturi jet 90.
- the venturi jet 90 discharges into return path 92 in diverter tube 60 to reduce pressure in return port 94 so as to draw debris laden fluid in (as will be explained below).
- Restrictor 88 creates enough backpressure to supply adequate pressure to the venturi jet 90.
- This restrictor is optional and can be used when the mill nozzles (not shown) are fairly large so that insufficient backpressure is available for proper operation of the venturi jet 90.
- the flow 66 goes to the nozzles in the mill 40 and comes back uphole laden with cuttings in annulus 96 as shown by flow arrow 98.
- Flow 98 with cuttings is forced into return port 94 and aided by the action of the venturi jet 90. It passes up the diverter tube 60 and comes out of outlets lOO.The top 102 of the diverter tube 60 is capped off above outlets 100.
- a screen 104 has a lower end 106 capped but the annular space 108 outside the screen is left open for the debris- laden flow 98.
- the debris free flow 110 goes to the surface outside of the coiled tubing 10.
- the debris 112 falls down to catch plate 114 which can be many feet below the lower end 106 of screen 104.
- coiled tubing milling is possible with small coiled tubing sizes in casing bigger than 4-1/2 inches.
- the coiled tubing is isolated from reaction torque by an anchor.
- the milling is done with a mud motor with the additional optional use of a thruster to keep weight on the mill.
- a debris catcher incorporates improvements to enhance performance, capacity and reliability.
- a hydraulically operated cutter my be used rather than a mill to sever casing.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005274820A AU2005274820A1 (en) | 2004-07-19 | 2005-07-19 | Coiled tubing conveyed milling |
GB0703090A GB2432865B (en) | 2004-07-19 | 2005-07-19 | Coiled tubing conveyed milling |
CA002576432A CA2576432A1 (en) | 2004-07-19 | 2005-07-19 | Coiled tubing conveyed milling |
NO20070881A NO339747B1 (en) | 2004-07-19 | 2007-02-15 | Procedure for cutting downhole objects |
AU2010249148A AU2010249148C1 (en) | 2004-07-19 | 2010-12-02 | Coiled tubing conveyed milling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US58905304P | 2004-07-19 | 2004-07-19 | |
US60/589,053 | 2004-07-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006020206A2 true WO2006020206A2 (en) | 2006-02-23 |
WO2006020206A3 WO2006020206A3 (en) | 2006-05-04 |
Family
ID=35044812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/025405 WO2006020206A2 (en) | 2004-07-19 | 2005-07-19 | Coiled tubing conveyed milling |
Country Status (6)
Country | Link |
---|---|
US (1) | US7478687B2 (en) |
AU (2) | AU2005274820A1 (en) |
CA (1) | CA2576432A1 (en) |
GB (3) | GB2432865B (en) |
NO (1) | NO339747B1 (en) |
WO (1) | WO2006020206A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009020730A1 (en) * | 2007-08-03 | 2009-02-12 | Baker Hughes Incorporated | Eductor jet bushing for downhole use |
Families Citing this family (23)
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US7472745B2 (en) * | 2006-05-25 | 2009-01-06 | Baker Hughes Incorporated | Well cleanup tool with real time condition feedback to the surface |
US8261828B2 (en) * | 2007-03-26 | 2012-09-11 | Baker Hughes Incorporated | Optimized machining process for cutting tubulars downhole |
US8113271B2 (en) * | 2007-03-26 | 2012-02-14 | Baker Hughes Incorporated | Cutting tool for cutting a downhole tubular |
US7628205B2 (en) * | 2007-03-26 | 2009-12-08 | Baker Hughes Incorporated | Optimized machining process for cutting tubulars downhole |
US7610957B2 (en) * | 2008-02-11 | 2009-11-03 | Baker Hughes Incorporated | Downhole debris catcher and associated mill |
CA2719792C (en) * | 2008-03-27 | 2015-06-30 | John C. Wolf | Downhole debris removal tool |
US8800660B2 (en) * | 2009-03-26 | 2014-08-12 | Smith International, Inc. | Debris catcher for collecting well debris |
US20100288492A1 (en) * | 2009-05-18 | 2010-11-18 | Blackman Michael J | Intelligent Debris Removal Tool |
US8936088B2 (en) * | 2010-05-20 | 2015-01-20 | Baker Hughes Incorporated | Cutting assembly and method of cutting coiled tubing |
US8584744B2 (en) | 2010-09-13 | 2013-11-19 | Baker Hughes Incorporated | Debris chamber with helical flow path for enhanced subterranean debris removal |
US8607857B2 (en) | 2010-12-17 | 2013-12-17 | Baker Hughes Incorporated | Vacuum debris removal with articulated pickup and visual capability |
US8960282B2 (en) | 2011-04-29 | 2015-02-24 | Baker Hughes Incorporated | Centrifugal subterranean debris collector |
US8881819B2 (en) * | 2011-05-16 | 2014-11-11 | Baker Hughes Incorporated | Tubular cutting with a sealed annular space and fluid flow for cuttings removal |
US8689878B2 (en) | 2012-01-03 | 2014-04-08 | Baker Hughes Incorporated | Junk basket with self clean assembly and methods of using same |
US9080401B2 (en) | 2012-04-25 | 2015-07-14 | Baker Hughes Incorporated | Fluid driven pump for removing debris from a wellbore and methods of using same |
US8973662B2 (en) | 2012-06-21 | 2015-03-10 | Baker Hughes Incorporated | Downhole debris removal tool capable of providing a hydraulic barrier and methods of using same |
US9228414B2 (en) | 2013-06-07 | 2016-01-05 | Baker Hughes Incorporated | Junk basket with self clean assembly and methods of using same |
US9416626B2 (en) | 2013-06-21 | 2016-08-16 | Baker Hughes Incorporated | Downhole debris removal tool and methods of using same |
US9494005B2 (en) * | 2013-09-24 | 2016-11-15 | Baker Hughes Incorporated | Subterranean solids separator |
CN103696716A (en) * | 2013-11-12 | 2014-04-02 | 湖北中南勘察基础工程有限公司 | Deep hole bottom powder fishing device |
US10538983B2 (en) * | 2014-08-06 | 2020-01-21 | Schlumberger Technology Corporation | Milling tools with a secondary attrition system |
US10352147B2 (en) | 2015-11-18 | 2019-07-16 | Baker Hughes, A Ge Company, Llc | Horizontal extended reach borehole cleanup tool |
CN107882543B (en) * | 2016-09-30 | 2020-10-09 | 中国石油天然气股份有限公司 | Horizontal well horizontal jet fracturing device |
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WO1999057409A2 (en) * | 1998-05-04 | 1999-11-11 | Norse Cutting & Abandonment As | A method and a plug for plugging a casing in a petroleum well and a tool for milling an opening in a casing in a petroleum well |
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-
2005
- 2005-07-13 US US11/180,880 patent/US7478687B2/en active Active
- 2005-07-19 CA CA002576432A patent/CA2576432A1/en not_active Abandoned
- 2005-07-19 GB GB0703090A patent/GB2432865B/en active Active
- 2005-07-19 GB GB0806479A patent/GB2446733B/en active Active
- 2005-07-19 GB GB0806480A patent/GB2446734B/en active Active
- 2005-07-19 WO PCT/US2005/025405 patent/WO2006020206A2/en active Application Filing
- 2005-07-19 AU AU2005274820A patent/AU2005274820A1/en not_active Abandoned
-
2007
- 2007-02-15 NO NO20070881A patent/NO339747B1/en unknown
-
2010
- 2010-12-02 AU AU2010249148A patent/AU2010249148C1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5765640A (en) * | 1996-03-07 | 1998-06-16 | Baker Hughes Incorporated | Multipurpose tool |
WO1999057409A2 (en) * | 1998-05-04 | 1999-11-11 | Norse Cutting & Abandonment As | A method and a plug for plugging a casing in a petroleum well and a tool for milling an opening in a casing in a petroleum well |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009020730A1 (en) * | 2007-08-03 | 2009-02-12 | Baker Hughes Incorporated | Eductor jet bushing for downhole use |
Also Published As
Publication number | Publication date |
---|---|
GB2446734B (en) | 2009-01-28 |
AU2010249148B2 (en) | 2012-02-16 |
GB2446733A (en) | 2008-08-20 |
GB2432865A (en) | 2007-06-06 |
GB2432865B (en) | 2008-10-22 |
US7478687B2 (en) | 2009-01-20 |
NO339747B1 (en) | 2017-01-30 |
GB0806479D0 (en) | 2008-05-14 |
GB2446734A (en) | 2008-08-20 |
GB2446733B (en) | 2009-01-28 |
GB0806480D0 (en) | 2008-05-14 |
NO20070881L (en) | 2007-03-21 |
AU2010249148C1 (en) | 2012-09-27 |
GB0703090D0 (en) | 2007-03-28 |
CA2576432A1 (en) | 2006-02-23 |
AU2010249148B8 (en) | 2012-04-05 |
WO2006020206A3 (en) | 2006-05-04 |
AU2010249148A1 (en) | 2010-12-23 |
AU2005274820A1 (en) | 2006-02-23 |
US20060011344A1 (en) | 2006-01-19 |
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