CN104514506B - The improved method of junk mill and the spiral impregnated type junk mill with reaming hole function - Google Patents
The improved method of junk mill and the spiral impregnated type junk mill with reaming hole function Download PDFInfo
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- CN104514506B CN104514506B CN201410787199.7A CN201410787199A CN104514506B CN 104514506 B CN104514506 B CN 104514506B CN 201410787199 A CN201410787199 A CN 201410787199A CN 104514506 B CN104514506 B CN 104514506B
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- Prior art keywords
- junk mill
- rotor
- spiral
- righting
- milling head
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003801 milling Methods 0.000 claims abstract description 52
- 239000000956 alloy Substances 0.000 claims abstract description 48
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 48
- 238000003466 welding Methods 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 102000010637 Aquaporins Human genes 0.000 claims 3
- 108091006146 Channels Proteins 0.000 claims 3
- 108010063290 Aquaporins Proteins 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009966 trimming Methods 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
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
The invention discloses a kind of improved method of junk mill and the spiral impregnated type junk mill with reaming hole function, its improved method mainly include：The improvement of righting band, milling head and circulating water channel；Righting band uses open large helix angle deep groove helical righting band, one layer of hard alloy of outer surface surfacing of spiral righting band；Milling head is welded into rotor shape hard alloy particle block using welding method in junk mill body bottom portion heap, and welds row's prismatic alloy block as cutting edge at the Ying Kou edges of rotor；The water inlet of circulating water channel is by the way of large aperture blind hole is combined with large aperture blind via bottom by the small-bore spout of radial arrangement, by the use of the gap between rotor shape milling head rotor as space runner, the helicla flute taken by spiral righting is used as backwater channel and forms complete circulating water channel.Righting effect of the present invention is good；A series of generation of underground major accidents such as eccentric wear phenomenon and the windowing brought by eccentric wear, well slough can be prevented.The present invention has a variety of well workover functions.
Description
Technical field
The present invention relates to a kind of improved method of junk mill and with reaming hole function spiral impregnated type junk mill, belong to oil
Well workover fixture technology field.
Background technology
There is the junk mill of righting function at present, its righting structure is mainly by the straight rib of three projections or valvula block structure on junk mill
Into due to junk mill, this body length is shorter, therefore the length of the straight rib of three on junk mill projection or valvula block is also very short, righting effect
Undesirable, when milling operation is carried out in horizontal well or extended reach well, junk mill body easily produces eccentric wear, damages sleeve pipe or well
Wall, cause to open a window or collapse when serious.In addition, current junk mill cutting function position uses plane integral type built-up welding side mostly
Formula, the life-span, long and milling was not less efficient, and there may be " shelling " phenomenon under high the pressure of the drill condition of work to cause secondary underground thing
Therefore.
It is Chinese patent literature Application No. CN201220193497, entitled in order to overcome above-mentioned deficiency《Cylindricality is ground
Footwear》, disclosing a kind of technical scheme of helical form cylindricality junk mill, the program adds screw-on cutter cylindricality junk mill is cylindrical, though
The righting effect of cylindricality junk mill can be so improved, but the bottom of the technical scheme is taper, can only be used as milling cone, it is main to use
In reconditioning casing operation, fish top of fish finishing can not be carried out, milling efficiency is low, short life, and application is narrow.Additionally, due to the skill
It is small that helical cutting edge in art scheme cuts lead angle, influences circulating water flow during milling, milling can not be got off in time
Chip is discharged, and influences the cutting effect and service life of milling cutter.
The content of the invention
It is an object of the present invention to provide a kind of improved method of junk mill and the spiral impregnated type with reaming hole function is ground
Footwear, to overcome existing junk mill easily to produce eccentric wear, the technical problem of sleeve pipe or the borehole wall is damaged, while expand the application model of junk mill
Enclose, extend junk mill service life, so as to overcome the deficiencies in the prior art.
The technical proposal of the invention is realized in this way：
A kind of improved method of junk mill of the present invention is that the improved method mainly includes：Righting band, milling head and recirculated water
The improvement of passage；Righting band uses open large helix angle deep groove helical righting band, one layer of the outer surface surfacing of spiral righting band
Hard alloy；Milling head is welded into rotor shape hard alloy particle block using welding method in junk mill body bottom portion heap, and in rotor
Row's prismatic alloy block is welded as cutting edge in Ying Kou edges；The water inlet of circulating water channel uses large aperture blind hole and large aperture
Blind via bottom in the way of the small-bore spout of radial arrangement combines, by the use of the gap between rotor shape milling head rotor as
Space runner, the helicla flute taken by spiral righting are used as backwater channel and form complete circulating water channel.
In preceding method, the open of the open large helix angle deep groove helical righting band refers to the outer of spiral righting band
Radius of circle R is more than the exradius r of junk mill body, and helicla flute both ends are open formation backwater channel；The king bolt pull
Groove refers to that the tangent line of helicla flute direction of rotation and the angle of horizontal plane are 70~80 °, and groove depth is close to righting with radius R and junk mill sheet
Body radius r difference, backwater channel section is improved to greatest extent.
In preceding method, cross sectional shape and the spiral righting band section face shape pair of the rotor shape hard alloy particle block
Should；Including at least two rotors, space runner is formed between two rotors.
In preceding method, the prismatic alloy block uses 3~6 prisms, prismatic alloy block along rotor Ying Kou edges arrange when,
Seamed edge is towards rotor Ying Kou directions word order；Prismatic alloy block seamed edge on different rotors uses Heterogeneous Permutation mode, each
Seamed edge is located on different radii circle.
In preceding method, the water inlet of the small-bore spout communicates with junk mill large aperture blind hole, and small-bore spout goes out
The mouth of a river communicates between being located at the rotor of milling head two with space runner.
A kind of spiral impregnated type junk mill with reaming hole function of the invention formed as stated above is should have and expand
The spiral impregnated type junk mill of eye function includes junk mill body, and junk mill body hypomere is provided with spiral righting band, spiral righting band bottom
Portion is provided with milling head, and the cross sectional shape of milling head corresponds to rotor shape with the cross sectional shape of spiral righting band；Set in junk mill body
There is large aperture blind hole, large aperture blind via bottom is along the circumferential direction evenly equipped with small-bore spout, and the delivery port of small-bore spout is located at
In the space runner formed between the rotor of milling head two.
In foregoing junk mill, the spiral righting band outer surface surfacing has hard alloy layer.
In foregoing junk mill, the milling head is the rotor shape hard alloy being welded into welding method in junk mill body bottom portion heap
Grain block, the Ying Kou edges of rotor are welded with prismatic alloy block as cutting edge, and the cutting plane that cutting edge is formed is plane.
By adopting the above-described technical solution, the present invention is compared with prior art, the present invention uses open large helix angle
The structure type of deep groove helical righting band so that righting effect is obviously improved；Can further it be advised with reaming hole gauge ability
Whole milling face.A series of generation of underground major accidents such as eccentric wear phenomenon and the windowing brought by eccentric wear, well slough can be prevented.Improve
Milling efficiency and service life, reduce cost, can control well workover risk.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention
Fig. 2 is the appearance schematic diagram of the present invention.
Mark in accompanying drawing for：1- junk mills body, 2- spiral rightings band, 3- milling heads, 4- large apertures blind hole, 5- small-bores
Spout, 6- spaces runner, 7- hard alloy layers, 8- prismatic alloy blocks.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples, but not as to any of the present invention
Limitation.
A kind of improved method of junk mill of the present invention, as depicted in figs. 1 and 2：The improved method mainly includes：Righting band,
The improvement of milling head and circulating water channel；Righting band uses open large helix angle deep groove helical righting band, spiral righting band
One layer of hard alloy of outer surface surfacing；Milling head is welded into rotor shape hard alloy particle using welding method in junk mill body bottom portion heap
Block, and row's prismatic alloy block is welded as cutting edge at the Ying Kou edges of rotor；The water inlet of circulating water channel uses macropore
Footpath blind hole in the way of the small-bore spout of radial arrangement is combined, utilizes rotor shape milling head rotor with large aperture blind via bottom
Between gap as space runner, the helicla flute taken by spiral righting, which is used as backwater channel and forms complete recirculated water, to be led to
Road.The open exradius R for referring to spiral righting band of open large helix angle deep groove helical righting band is more than junk mill body
Exradius r, helicla flute both ends are open formation backwater channel；The large helix angle deep trouth refers to helicla flute direction of rotation
Tangent line and the angle of horizontal plane be 70~80 °, groove depth is close to difference of the righting with radius R Yu junk mill body radius r, maximum limit
The raising backwater channel section of degree.The cross sectional shape of the rotor shape hard alloy particle block and spiral righting band section face shape
It is corresponding；Including at least two rotors, space runner is formed between two rotors.Prismatic alloy block uses 3~6 prisms, prismatic
Alloy block along rotor Ying Kou edges arrange when, seamed edge is towards rotor Ying Kou directions word order；Prismatic alloy on different rotors
Block seamed edge uses Heterogeneous Permutation mode, and each seamed edge is located on different radii circle.The water inlet of small-bore spout and junk mill macropore
Footpath blind hole communicates, and the delivery port of small-bore spout communicates between being located at the rotor of milling head two with space runner.
A kind of spiral impregnated type junk mill with reaming hole function of the invention formed as stated above, there should be reaming hole
The spiral impregnated type junk mill of function includes junk mill body 1, and the hypomere of junk mill body 1 is provided with spiral righting band 2, spiral righting band 2
Bottom is provided with milling head 3, and the cross sectional shape of milling head 3 corresponds to rotor shape with the cross sectional shape of spiral righting band 2；Junk mill body
Large aperture blind hole 4 is provided with 1, the bottom of large aperture blind hole 4 is along the circumferential direction evenly equipped with small-bore spout 5, and small-bore spout 5 goes out
The mouth of a river is located in the space runner 6 formed between the rotor of milling head two.The outer surface surfacing of spiral righting band 2 has hard alloy layer 7.
Milling head 3 is the rotor shape hard alloy particle block being welded into welding method in the bottom heap of junk mill body 1, and rotor meets a mouthful edge welding
It is connected to prismatic alloy block 8 and is used as cutting edge, the cutting plane that cutting edge is formed is plane.
Embodiment
As depicted in figs. 1 and 2：This example is closed by the junk mill body 1 with spiral righting structure, prismatic alloy block 8 and hard
Gold composition.The joint screw thread top at the top of junk mill body 1 connects cooperation drilling tool, and large aperture blind hole 4, macropore are provided with junk mill body 1
There is emitting shape small-bore spout 5 lower end of footpath blind hole 4, and mud flows through small-bore spout until milling face through large aperture blind hole.Junk mill
The bottom of body 1 is the hard alloy of built-up welding, and six rib alloy blocks are inlayed in hard alloy and form cutting edge, bottom built-up welding portion
Divide the corresponding space runner 6 of distribution built-up welding according to small-bore spout 5.Spiral righting band 2 is open great-lift angle spiral righting
Band simultaneously studs with alloy block in one layer of hard alloy of outer surface surfacing, and in righting band bottom, and wherein lead angle is 75 °, rib band
Quantity and the size and number of small-bore spout 5 can select according to diameter and discharge capacity.There are a chain-wales solderable in rib band bottom
Connect the rib alloy block of a row six, and cutting plane and the bottom heap of a rotor shape are formed with the hard alloy particle of built-up welding thereafter etc.
The cutting plane that the alloy block that weldering position is inlayed is formed keeps concordant, plays a part of reaming hole gauge and finishing milling edge.
Wherein helical centering edge is due to making the one-piece auger formula close to milling face so that the junk mill in milling without
By be horizontal well or in extended reach well can good centering, internal surface of sleeve pipe or the borehole wall will not be injured, prevent windowing,
The serious consequences such as well slough, while the six rib alloy blocks installed additional in spiral righting headed can also play guarantee mill in milling operation
Hole milling footpath, and the irregular face after milling is effectively cleared up, accomplish that non-trimming and milling face are regular, be the operation of next step
Good environment is provided and improves one-stop operation success rate, cost is reduced, controls risk.Further, since small-bore spout makes spray
Shape runner and corresponding with space runner 6 is penetrated, through the circulation fluid that small-bore spout sprays to take milling out of broken in drilling process
The effect for rinsing cutting edge and cooling is also played while thing, further increases life-span and the milling efficiency of junk mill.
When carrying out built-up welding milling plane, because injection runner is radial, therefore a mill is welded in middle part heap
While milling platform, reserve space runner, facilitate liquid to take away milling after being ejected as small-bore spout caused by chip
And high temperature.Six rib alloy blocks are arranged according to the form to misplace successively, are filled up the gap after six rib alloy blocks are inlayed mutually and are reached
To the effect of comprehensive covering milling plane, dead angle is not stayed, good operating environment is provided for secondary operation.Further, since spiral shell
Rotation righting band uses large helix angle open type spiral structure so that water-carrying groove is also great-lift angle open type spiral structure, is being circulated
Liquid band to mince to flow through the runner and by helix rise and improves the large rock-carrying ability of circulation fluid and also function to crucial work for purification shaft bottom
With.
When it is implemented, the overall height of spiral righting band should be greater than more than 3 of spiral righting with external diameter, to ensure to help
Plus effect.
It is the concrete application example of the present invention above, does not form any limitation of the invention, all use equally is replaced
Change or equivalent transformation formed technical scheme, belong to protection scope of the present invention.
Claims (4)
- A kind of 1. improved method of junk mill, it is characterised in that：The improved method mainly includes：Righting band, milling head and circulation The improvement of aquaporin；Righting band is used into open large helix angle deep groove helical righting band, and by the outer surface of spiral righting band One layer of hard alloy of surfacing；Milling head is welded into rotor shape hard alloy particle block using welding method in junk mill body bottom portion heap, and Row's prismatic alloy block is welded at the Ying Kou edges of rotor as cutting edge；The water inlet of circulating water channel is blind using large aperture Hole with large aperture blind via bottom in the way of the small-bore spout of radial arrangement is combined, using between rotor shape milling head rotor Gap as space runner, the helicla flute taken by spiral righting is used as backwater channel and forms complete circulating water channel； Improvement to milling head is the rotor shape hard alloy particle block being welded into welding method in junk mill body bottom portion heap, in meeting for rotor Mouth edge is welded with prismatic alloy block as cutting edge, and it is plane to make the cutting face that cutting edge is formed；It is described open big The open exradius R for referring to spiral righting band of helical angle deep groove helical righting band is more than the exradius r of junk mill body, It is open formation backwater channel to make helicla flute both ends；The large helix angle deep trouth refer to by the tangent line of helicla flute direction of rotation with The angle of horizontal plane is 70~80 °, so can be maximum by groove depth close to difference of the righting with radius R Yu junk mill body radius r The raising backwater channel section of limit；By the cross sectional shape of rotor shape hard alloy particle block and spiral righting band cross sectional shape pair Should, and two rotors are comprised at least, make to form space runner between two rotors.
- 2. the improved method of junk mill according to claim 1, it is characterised in that：The prismatic alloy block uses 3~6 prisms, By prismatic alloy block along rotor Ying Kou edges arrange when, make seamed edge towards rotor Ying Kou directions word order；And by different rotors On prismatic alloy block seamed edge use Heterogeneous Permutation mode, make each seamed edge be located at different radii circle on.
- 3. the improved method of junk mill according to claim 1, it is characterised in that：The water inlet of small-bore spout and junk mill is big Aperture blind hole is communicated, and the delivery port of small-bore spout is located between the rotor of milling head two and communicated with space runner.
- A kind of 4. spiral impregnated type with reaming hole function formed by claims 1 to 3 any claim methods described Junk mill, including junk mill body, it is characterised in that：Spiral righting band is provided with junk mill body hypomere, spiral righting band bottom is provided with Milling head, the cross sectional shape of milling head correspond to rotor shape with the cross sectional shape of spiral righting band；Macropore is provided with junk mill body Footpath blind hole, large aperture blind via bottom are along the circumferential direction evenly equipped with small-bore spout, and the delivery port of small-bore spout is located at milling head In the space runner formed between two rotors；Milling head is to be closed with welding method in the rotor shape hard that junk mill body bottom portion heap is welded into Gold grain block, the Ying Kou edges of rotor are welded with prismatic alloy block as cutting edge, and the cutting plane that cutting edge is formed is Plane；Spiral righting band outer surface surfacing has hard alloy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787199.7A CN104514506B (en) | 2014-12-18 | 2014-12-18 | The improved method of junk mill and the spiral impregnated type junk mill with reaming hole function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410787199.7A CN104514506B (en) | 2014-12-18 | 2014-12-18 | The improved method of junk mill and the spiral impregnated type junk mill with reaming hole function |
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| Publication Number | Publication Date |
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| CN104514506A CN104514506A (en) | 2015-04-15 |
| CN104514506B true CN104514506B (en) | 2018-03-27 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843264B (en) * | 2018-05-26 | 2024-03-01 | 锦州清华机械有限公司 | Line cutting type multifunctional milling cone |
| CN113898309A (en) * | 2020-06-22 | 2022-01-07 | 中海油能源发展股份有限公司 | Spiral wing collarband mill shoe |
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|---|---|---|---|---|
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| CN201401142Y (en) * | 2008-12-12 | 2010-02-10 | 中国石油集团长城钻探工程有限公司 | Horizontal well high-efficiency composite mill shoe |
| CN102182415A (en) * | 2011-04-06 | 2011-09-14 | 中国海洋石油总公司 | Efficient milling cone with guide tool |
| RU2465433C1 (en) * | 2011-05-05 | 2012-10-27 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Device for screwing-off and destruction of reamed string |
| CN203394403U (en) * | 2013-07-25 | 2014-01-15 | 牡丹江北方机械制造有限责任公司 | Drifting reaming type float shoe |
| CN203626677U (en) * | 2013-12-26 | 2014-06-04 | 贵州高峰石油机械股份有限公司 | Righting type efficient embedded grind shoe |
| CN204344038U (en) * | 2014-12-18 | 2015-05-20 | 贵州高峰石油机械股份有限公司 | A kind of spiral impregnated type junk mill with reaming hole function |
-
2014
- 2014-12-18 CN CN201410787199.7A patent/CN104514506B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212957A2 (en) * | 1985-08-19 | 1987-03-04 | Smith International, Inc. | Packer mill |
| CN201090166Y (en) * | 2007-09-04 | 2008-07-23 | 中国石油天然气集团公司 | Salvaging callback cover mill shoe multiple-limb well |
| CN201401142Y (en) * | 2008-12-12 | 2010-02-10 | 中国石油集团长城钻探工程有限公司 | Horizontal well high-efficiency composite mill shoe |
| CN201358743Y (en) * | 2009-02-20 | 2009-12-09 | 成都恩承油气有限公司 | Fishing and milling integration tool |
| CN102182415A (en) * | 2011-04-06 | 2011-09-14 | 中国海洋石油总公司 | Efficient milling cone with guide tool |
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| CN203394403U (en) * | 2013-07-25 | 2014-01-15 | 牡丹江北方机械制造有限责任公司 | Drifting reaming type float shoe |
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| CN104514506A (en) | 2015-04-15 |
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