CN108316877A - Equal hole diameters expansion sleeve hydraulic variable diameter milling tool - Google Patents
Equal hole diameters expansion sleeve hydraulic variable diameter milling tool Download PDFInfo
- Publication number
- CN108316877A CN108316877A CN201711476481.3A CN201711476481A CN108316877A CN 108316877 A CN108316877 A CN 108316877A CN 201711476481 A CN201711476481 A CN 201711476481A CN 108316877 A CN108316877 A CN 108316877A
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- milling
- block
- milling block
- ontology
- tool
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- 238000003801 milling Methods 0.000 title claims abstract description 75
- 239000000956 alloy Substances 0.000 claims abstract description 6
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 210000002445 nipple Anatomy 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 2
- 238000004064 recycling Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
A kind of equal hole diameters expansion sleeve hydraulic variable diameter milling tool, including ontology, milling block, briquetting, relief frame；Be uniformly distributed along the circumference 26 milling blocks on ontology, and milling block outermost end studs with hard alloy, is radially slidably connected by piston between milling block and ontology, spring is equipped between briquetting and milling block, under spring force, milling block is received in body recess, facilitates tool tripping in and recycling.Tool lower portion is connected with relief frame, is equipped with hydrophthalmia, different cutting force can be provided by the size of Displacement Regulation.When acting on the hydraulic coupling on piston more than spring force, milling block is pushed to stretch out, by rotating milling mode operation.Advantage of the invention is that：From the outside milling of inboard wall of tube body during the tool milling, entire tube wall is disposably cut, drilling depth is fast, efficient；Cutting force can be adjusted by displacement size, convenient for control, be not easy swaging clamp；Milling block is replaceable, and maintaining is at low cost.
Description
Technical field
The present invention relates to a kind of equal hole diameters expansion sleeve hydraulic variable diameter milling works in oil drilling completion tool field
Tool, part tube body and well cementation attachment for casing deformation is effectively treated, leaves in wellbore provide a kind of technological means, can be used for
Equal hole diameters expansion sleeve attachment brill removes and casing damaged well diameter enlarging.
Background technology
Equal hole diameters expansion sleeve bores developing direction of the completion technique as world expansion sleeve technology and casing programme, can be with
It realizes to lose without internal diameter and creep into, well solve the problems such as completion size that decrement formula casing programme is brought is small, do not sacrificing well
Eye diameter dimension under the premise of complicated interval is blocked, will etc. hole diameters expansion sleeve without internal diameter lose ground tieback to higher level cover
Pipe, so as to continue to creep into using the drill bit with size.In addition, wait hole diameters technology also can be used as a kind of emergency preplan be used in it is naked
Eye well section insulates unstable Reservoir Section, activating shale, salt deposit and low fracture gradient stratum etc., has both maintained wellbore ruler
It is very little, and avoid blocking entire interval.
Since equal hole diameters expansion sleeve deformation rate is much larger than common expansion tube, it is contemplated that it can be in the case where upper layer casing be smooth
Enter, and diameter need to be consistent with upper layer casing in inflated tube body, therefore, used expansion cone must use reducing
Mode.Patent ZL200920158007.0 discloses a kind of umbrella type variable diameter expansion tool, and patent ZL201120421064.0 is public
A kind of folding type diameter-variable expansion tool of cloth.Both tools are all made of expansion fashion from bottom to top, i.e., will can be changed in advance
Diameter expansion tool is placed in expansion starter, and reducing cone closure is completed after being lowered into precalculated position, to form lower seal chamber,
The expansion process of tube body is completed under action of hydraulic force from bottom to top.The lower part of entire pipe string is just caused to have part tube body can not in this way
The hole diameters such as completion expansion, to be unable to reach the purpose that lower step uses identical size drilling tool drilling.In addition, positioned at pipe string bottom
Well cementation attachment is also needed to bore and be removed.The time-consuming, effort using conventional milling tool, and due to the limitation of tripping in tool sizes, it is difficult to will
Lower pipe body bores remove completely, to influence subsequent construction.
Invention content
The purpose of the present invention is in view of the above-mentioned problems, developing a kind of equal hole diameters expansion sleeve hydraulic variable diameter milling work
Tool controls the flexible of milling mechanism, to complete the tripping in of tool and the milling process of tube body, at guarantee by hydraulic coupling
Wellbore after reason meets the size requirement of lower step drilling.
Technical scheme of the present invention：
Equal hole diameters expansion sleeve hydraulic variable diameter milling tool, including ontology, milling block, briquetting, relief frame；Wherein：Ontology
Top processes nipple, and 2-6 grooves being uniformly distributed along the circumference of outside setting, centre is equipped with the shaft orientation flowing channel and 2- being mutually communicated
6 radial flow paths corresponding with groove；Circumferentially correspondence is distributed in the groove of ontology 2-6 milling block；In each milling block
Side is equipped with piston, and piston radially slides sealing cooperation with the radial flow path composition being arranged in ontology；Briquetting is arranged outside milling block
In the body recess in portion, briquetting is connect with ontology by pin and milling block is radially limited；In briquetting and milling block periphery
Pairing portion is machined with convex edge, and spring is equipped in the annular space constituted between briquetting and milling block block convex edge.
Said program further comprises：
It is equipped with relief frame at body lower part port, hydrophthalmia is equipped in relief frame.
Hard alloy blocks are studded with outside each milling block.
Body lower part is processed as guiding pyramidal structure.
The advantage of the invention is that：
Outer diameter is smaller during the tool tripping in, and front end carries guide surface, is convenient for tripping in；Rotary cutting is used during milling
Mode, the outside milling since inboard wall of tube body disposably cuts entire tube wall, and drilling depth is fast, efficient；Cutting force can be by arranging
Amount size is adjusted, and convenient for control, is not easy swaging clamp；Maximum cutting outer diameter is controlled by position-limit mechanism, ensures that tube body cutting is dry
Bore hole inside wall is not damaged while net；Milling block is replaceable, once there is partial injury, is continuing with after can carrying out repairing replacement,
Maintaining is at low cost.
The present invention cannot be only used for the processing of the unexpanded tube body of equal hole diameters expansion sleeve low portion, it can also be used to due to set
The other reasons such as pipe deformation, corrosion cause wellbore to block, and need to dredge wellbore to carry out the work such as lower step drilling.
Description of the drawings
The equal hole diameters expansion sleeve hydraulic variable diameter milling tool milling block retraction structure schematic diagram of attached drawing 1；
The equal hole diameters expansion sleeve hydraulic variable diameter milling tool milling block retraction sectional view of attached drawing 2；
The hole diameters expansion sleeves such as attached drawing 3 stretch out structural schematic diagram with hydraulic variable diameter milling tool milling block；
The hole diameters expansion sleeves such as attached drawing 4 stretch out sectional view with hydraulic variable diameter milling tool milling block；
In figure：1. ontology, 2. milling blocks, 3. briquettings, 4. relief frames, 5. pistons, 6. pilot holes, 7. pins, 8. springs,
9, hard alloy blocks.
Specific implementation mode
In conjunction with Figure of description and embodiment, the invention will be further described：
As shown in attached drawing 1, Fig. 2, it includes ontology 1, milling block 2, briquetting to wait hole diameters expansion sleeve hydraulic variable diameter milling tool
3, the components such as relief frame 4.Be uniformly distributed along the circumference 3 milling blocks 2 on ontology 1, and outside studs with hard alloy blocks 9, milling block 2 and ontology
Between connection radially slided by piston 5.There are 2 briquettings 3 for maximum outside diameter when limiting its stretching outside each milling block.Pressure
Block 3 is connect by pin 5 with ontology 1, is machined with convex edge on briquetting 3 and milling block 2, is used for built-in spring 8.In briquetting 3 and bullet
Under the action of spring 8, milling block 2 is retracted, and outer diameter is less than 1 outer diameter of ontology.1 lower part of ontology is connected through a screw thread relief frame 4, pressure regulation
It is equipped with hydrophthalmia in ring 4, stays flow to generate corresponding pressure drop for limiting, enough hydraulic pressure is provided for the stretching of milling block 2
Power.
Application Example：
As shown in attached drawing 1 ~ 4, hole diameters expansion sleeve hydraulic variable diameter milling tool is waited to be bored by 1 threaded upper ends of ontology and top
Tool connection, after the equal hole diameters for completing tube body expand, the tripping in milling tool.Be uniformly distributed along the circumference 3 milling blocks 2 on ontology 1,
During tool tripping in, milling block 2 is under the action of spring 8 and briquetting 3, and in 1 groove of retraction ontology, outer diameter is less than ontology 1
Outer diameter.1 outer diameter of ontology, which is less than, waits for milling internal diameter of tube body 4mm, under the effect of front guide surface, can smoothly enter into tube body.Work as work
After tool is lowered into predetermined milling position, turn on pump is gradually increased discharge capacity, while rotating top drilling tool.At this point, liquid flows through bottom tune
Pressure ring 4 generates pressure drop under hydrophthalmia nozzle throttling action, provides hydraulic coupling, and milling is acted on via the pilot hole 6 on ontology 1
Piston 5 on block 2, to push milling block 2 that spring force is overcome to be pushed outwardly, when 2 outer diameter of milling block be more than 1 outer diameter of ontology and with
When internal diameter of tube body to be cut is identical, hard alloy blocks 9 start milling inboard wall of tube body.Slowly increase pump pressure, passes through the variation of discharge capacity
Increase cutting force, until tube body is cut off completely, meets subsequent job requirement.The maximum of milling block 2 is limited by briquetting 3 to open
Outer diameter does not damage bore hole inside wall after ensureing tube body milling.After the milling for completing tube body, termination of pumping pressure release, milling block 2 is in 3 He of briquetting
Retraction ontology 1 under the action of spring 6 facilitates tool above to carry to well head and recycles.
The present invention can be used for equal hole diameters expansion sleeve attachment brill and remove and casing damaged well diameter enlarging operation, can be that equal hole diameters expand
Casing hardware is bored except a kind of hydraulic variable diameter milling tool is provided, also the part for casing deformation is effectively treated, leaves in wellbore
Tube body and well cementation attachment provide a kind of technological means.
Claims (4)
1. equal hole diameters expansion sleeve hydraulic variable diameter milling tool, including ontology, milling block, briquetting, relief frame；Its feature exists
In：Body upper part processes nipple, and 2-6 grooves being uniformly distributed along the circumference of outside setting, centre is equipped with the axial direction being mutually communicated
Runner and 2-6 radial flow paths corresponding with groove；Circumferentially correspondence is distributed in the groove of ontology 2-6 milling block；Each
Piston is equipped on the inside of milling block, piston radially slides sealing cooperation with the radial flow path composition being arranged in ontology；Briquetting setting exists
In body recess outside milling block, briquetting is connect with ontology by pin and milling block is radially limited；In briquetting and mill
Milling block periphery pairing portion is machined with convex edge, and spring is equipped in the annular space constituted between briquetting and milling block block convex edge.
2. waiting hole diameters expansion sleeve hydraulic variable diameter milling tool as described in claim 1, it is characterised in that：Body lower part
It is equipped with relief frame at port, hydrophthalmia is equipped in relief frame.
3. waiting hole diameters expansion sleeve hydraulic variable diameter milling tool as claimed in claim 1 or 2, it is characterised in that：Each
Hard alloy blocks are studded with outside milling block.
4. waiting hole diameters expansion sleeve hydraulic variable diameter milling tool as claimed in claim 3, it is characterised in that：Body lower part
It is processed as guiding pyramidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476481.3A CN108316877A (en) | 2017-12-29 | 2017-12-29 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711476481.3A CN108316877A (en) | 2017-12-29 | 2017-12-29 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108316877A true CN108316877A (en) | 2018-07-24 |
Family
ID=62894180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711476481.3A Pending CN108316877A (en) | 2017-12-29 | 2017-12-29 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108316877A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296329A (en) * | 2018-11-29 | 2019-02-01 | 四川圣诺油气工程技术服务有限公司 | A kind of big orifice junk mill device |
| CN110578488A (en) * | 2019-10-21 | 2019-12-17 | 潍坊市宇宏石油机械有限公司 | Casing damage well repairing tool and repairing method |
| 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 |
| CN112459739A (en) * | 2020-12-16 | 2021-03-09 | 南智（重庆）能源技术有限公司 | Variable-diameter drilling and milling device for oil and gas well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2635890Y (en) * | 2003-07-03 | 2004-08-25 | 辽河石油勘探局工程技术研究院 | Drilling followed reamer |
| CN2844405Y (en) * | 2005-08-22 | 2006-12-06 | 大庆油田有限责任公司 | The fluid power expanding expands milling cutter |
| CN201170072Y (en) * | 2008-03-13 | 2008-12-24 | 中国石化集团胜利石油管理局钻井工艺研究院 | Variable radial expansion tools for expansion sieve tube |
| CN203022670U (en) * | 2012-12-14 | 2013-06-26 | 贵州高峰石油机械股份有限公司 | Efficient flat-bottom grinding shoe with ball centralizers and blades |
| CN104265222A (en) * | 2014-09-17 | 2015-01-07 | 中国石油天然气股份有限公司 | Hydraulic expansion cone capable of realizing self-constriction |
| CN104963639A (en) * | 2015-06-16 | 2015-10-07 | 中国石油天然气股份有限公司 | Downhole torque control tool for milling operation |
| CN207944906U (en) * | 2017-12-29 | 2018-10-09 | 中石化石油工程技术服务有限公司 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
-
2017
- 2017-12-29 CN CN201711476481.3A patent/CN108316877A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2635890Y (en) * | 2003-07-03 | 2004-08-25 | 辽河石油勘探局工程技术研究院 | Drilling followed reamer |
| CN2844405Y (en) * | 2005-08-22 | 2006-12-06 | 大庆油田有限责任公司 | The fluid power expanding expands milling cutter |
| CN201170072Y (en) * | 2008-03-13 | 2008-12-24 | 中国石化集团胜利石油管理局钻井工艺研究院 | Variable radial expansion tools for expansion sieve tube |
| CN203022670U (en) * | 2012-12-14 | 2013-06-26 | 贵州高峰石油机械股份有限公司 | Efficient flat-bottom grinding shoe with ball centralizers and blades |
| CN104265222A (en) * | 2014-09-17 | 2015-01-07 | 中国石油天然气股份有限公司 | Hydraulic expansion cone capable of realizing self-constriction |
| CN104963639A (en) * | 2015-06-16 | 2015-10-07 | 中国石油天然气股份有限公司 | Downhole torque control tool for milling operation |
| CN207944906U (en) * | 2017-12-29 | 2018-10-09 | 中石化石油工程技术服务有限公司 | Equal hole diameters expansion sleeve hydraulic variable diameter milling tool |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296329A (en) * | 2018-11-29 | 2019-02-01 | 四川圣诺油气工程技术服务有限公司 | A kind of big orifice junk mill device |
| CN109296329B (en) * | 2018-11-29 | 2020-08-07 | 四川圣诺油气工程技术服务有限公司 | Large-drift-diameter shoe grinding device |
| CN110578488A (en) * | 2019-10-21 | 2019-12-17 | 潍坊市宇宏石油机械有限公司 | Casing damage well repairing tool and repairing method |
| 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 |
| CN112459739A (en) * | 2020-12-16 | 2021-03-09 | 南智（重庆）能源技术有限公司 | Variable-diameter drilling and milling device for oil and gas well |
| CN112459739B (en) * | 2020-12-16 | 2022-05-06 | 南智（重庆）能源技术有限公司 | Variable-diameter drilling and milling device for oil and gas well |
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