CN106907122A - Junk mill - Google Patents
Junk mill Download PDFInfo
- Publication number
- CN106907122A CN106907122A CN201510968910.3A CN201510968910A CN106907122A CN 106907122 A CN106907122 A CN 106907122A CN 201510968910 A CN201510968910 A CN 201510968910A CN 106907122 A CN106907122 A CN 106907122A
- Authority
- CN
- China
- Prior art keywords
- mill
- junk
- brill
- junk mill
- mill portion
- 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.)
- Pending
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
- 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
Abstract
The present invention provides a kind of junk mill, is applied to field of oil drilling, including：Body and brill mill portion, the top of body are used to connect bull stick, and mill portion is bored in bottom connection, the bottom in the brill mill portion is provided with junk mill tooth, wherein, the structure axis for boring mill portion is parallel to each other and is not arranged on the same straight line with the structure axis of body, and the brill mill portion rotates by axle of the axis of the body.So as to improve oil exploitation efficiency.
Description
Technical field
The present invention relates to oil exploitation technology, more particularly to a kind of junk mill.
Background technology
In the later stage of oilfield exploitation, the aging aggravation of oil casing occurs breakage on oil casing
And leak source phenomenon, in order to ensure that the normal of oil well is used, repaired for casing damage position,
After casing salvaging, the casing inner diameter at the repairing cover place of putting is less than the casing inner diameter at other positions.
The aging needs repairing of oil casing is outer, for leak source phenomenon, in addition it is also necessary to the leak source on sleeve pipe
Leak stopping is carried out, it is determined that after at the position of leak source, to cement is filled in the sleeve pipe at leak source position, making water
Mud is squeezed into leak source, and leak source is blocked, however, the leak source on oil casing is blocked
Afterwards, the cement that solidification is further filled with sleeve pipe lives cannula occlusion, in order to oil well can be made to recover just
Often ground off using, it is necessary to these cement for solidifying are bored, sleeve pipe is got through.
In the prior art, it is general that brill mill is carried out to cement using milling shoe tool, bored in cement and grind one
Individual through hole, connects cement both sides, specifically, junk mill is extend at cement position by bull stick,
Bull stick drives junk mill to rotate, and carries out brill mill to cement, but if set between the cement position and well head
There is repairing on pipe, then milling shoe tool repairs position during stretching into, it is necessary to pass through, and this is repaiied
The casing diameter that cover puts place is general again smaller, in order that junk mill is by the repairing position, the diameter of junk mill
The diameter of repairing position sleeve pipe must be less than, the diameter for thus causing junk mill is smaller, bore flour milling product
Also just smaller, so the junk mill is when mill cement is bored, and the diameter for boring the cement hole for grinding is just smaller.
Therefore, using the method for prior art, make also to remain more cement in oil casing, block up
Plug oil casing, and then cause the production efficiency of oil relatively low.
The content of the invention
The present invention provides a kind of junk mill, with the defect for overcoming prior art to exist, improves the exploitation effect of oil
Rate.
The present invention provides a kind of junk mill, and the junk mill is applied to field of oil drilling, the junk mill, bag
Include：
Body, the top of the body is provided with attachment structure, and the attachment structure is used to connect bull stick；
Mill portion is bored, the top in the brill mill portion is connected to the bottom of the body, the bottom in the brill mill portion
Face is provided with bottom surface junk mill tooth, and the junk mill tooth is used to bore mill hard material；
The diameter with diameter greater than the body for boring mill portion, the axis in the brill mill portion with described
The axis of body is parallel to each other and is not arranged on the same straight line, and the brill mill portion is with the axis of the body
Axle is rotated.
Alternatively,
The bottom surface for boring mill portion is provided with least one limbers, for connecting the cavity in bull stick.
Alternatively,
The limbers is three, is evenly distributed on the bottom surface in the brill mill portion.
Alternatively,
The bottom surface junk mill tooth uses Hardmetal materials.
Alternatively,
The body is to be detachably connected with the brill mill portion.
Alternatively,
The body is to be threadedly coupled with the brill mill portion.
Alternatively,
The body is structure as a whole with the brill mill portion.
Alternatively,
The attachment structure includes screw thread, for being threadedly connected to the bull stick.
Alternatively,
The radial section in the body and the brill mill portion is all circle；
The bottom radial section of the body is inscribed within the top radial section in the brill mill portion.
The junk mill that the present invention is provided, is applied to field of oil drilling, including：Body and brill mill portion, this
The top of body is used to connect bull stick, and mill portion is bored in bottom connection, and the bottom in the brill mill portion is provided with junk mill tooth,
Wherein, the structure axis of the structure axis and body that bore mill portion is parallel to each other and not in same straight line
On, the brill mill portion rotates by axle of the axis of the body.Bore mill portion bias and be connected to body,
During junk mill is rotated, because the pivot center of junk mill is the structure axis of body, make brill mill portion
Rotation diameter be greater than its diameter of movement, the filler in oil well is bored when by the junk mill
During mill, although bore mill portion due to needing by the narrow location between filler and well head, its structure is straight
Footpath is smaller, but during mill is bored, the junk mill can carry out bigger than its diameter of movement to filler
Boring mill diameter carries out brill mill, thus makes the junk mill in the case of diameter is less, realizes relatively large
Brill mill diameter, increase brill flour milling product so that, improve oil exploitation efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing to be used needed for example or description of the prior art is applied to be briefly described, it should be apparent that, below
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
Without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of junk mill provided in an embodiment of the present invention；；
Fig. 2 is the top view of junk mill in Fig. 1 of the present invention；
Fig. 3 is another top view of junk mill in Fig. 1 of the present invention；
Fig. 4 is the milling area schematic diagram of structure shown in Fig. 2 of the present invention；
Fig. 5 is the milling area schematic diagram of structure shown in Fig. 3 of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
Term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing,
(if present)s such as " the 3rd " " the 4 " is for distinguishing similar object, without for retouching
State specific order or precedence.It should be appreciated that the data for so using in the appropriate case can be mutual
Change, so that embodiments of the invention described herein for example can be with except illustrating or describing herein
Order beyond those is implemented.Additionally, term " comprising " and " having " and their any change
Shape, it is intended that covering is non-exclusive to be included, for example, contain the process of series of steps or unit,
Method, system, product or equipment are not necessarily limited to those steps clearly listed or unit, but can
Including it is not listing clearly or for these processes, method, product or equipment it is intrinsic other step
Rapid or unit.
It is of the invention main identical parallel and not same by setting the structure axis of body and brill mill portion
On bar straight line, the diameter with diameter greater than the body in mill portion is bored, bore mill portion with the axis of the body
For axle is rotated.Therefore so that the rotation diameter for boring mill portion is greater than its diameter of movement, when by the mill
When footwear bore mill to the filler in oil well, although bore mill portion due to needing by filler and well
Narrow location between mouthful, its diameter of movement is smaller, but during mill is bored, the junk mill can be to filling out
Filling thing and carrying out bigger than its diameter of movement brill mill diameter carries out brill mill, thus makes the junk mill in diameter
In the case of less, relatively large brill mill diameter is realized, increase brill flour milling product, so that, improve
Oil exploitation efficiency.
Technical scheme is described in detail with specifically embodiment below.These have below
The embodiment of body can be combined with each other, may be in some embodiments for same or analogous concept or process
Repeat no more.
Fig. 1 is a kind of structural representation of junk mill provided in an embodiment of the present invention；Fig. 2 schemes for the present invention
The top view of junk mill in 1.With reference to shown in Fig. 1 and Fig. 2, a kind of junk mill is the embodiment of the invention provides,
Including：Body 1, attachment structure 2 and brill mill portion 3, wherein, the top of body 1 is provided with connection
Structure 2, mill portion 3 is bored for connecting bull stick, and the top for boring mill portion 3 is connected to the bottom of body 1,
The bottom surface for boring mill portion 3 is provided with bottom surface junk mill tooth 31, for boring mill hard material；Bore the straight of mill portion 3
Footpath is more than the diameter of body 1, and the axis for boring mill portion 3 is parallel to each other and not same with the axis of body 1
On straight line, bore mill portion 3 and rotated by axle of the axis of body 1.That is the eccentric connection in the brill mill portion 3
In on body 1.The junk mill can be extend into any position in oil casing by bull stick,
And the other end of bull stick can connect rotation motor, bar rotation can be driven, and then drive junk mill
Rotate, the bottom surface junk mill tooth that the bottom surface in the brill mill portion in junk mill portion is provided with is carried out to the filler in sleeve pipe
Bore mill.
Working process and principle below by way of junk mill in the present embodiment illustrate the present embodiment
Junk mill：
Specific work process：When needing bore mill to the filler in oil casing, wherein should
Filler can be typically the materials such as cement, specifically, one end of bull stick is connected to above-mentioned junk mill, and
Junk mill is extend at the position of filler by way of pipe being gone here and there, the other end of bull stick is connected to rotation
Motor, then by oil well outside rotation motor drive bar rotation, and then drive junk mill rotate,
A downward pressure is applied to junk mill simultaneously, the filler in sleeve pipe is carried out by the junk mill for rotating
Mill is bored, after the junk mill gets through the filler brill mill in sleeve pipe, then is pulled out junk mill by bull stick
Oil casing.
Concrete operating principle：Above-mentioned junk mill includes body 1 and bores the two parts of mill portion 3, and body 1 is used for
Connection bull stick, and rotated, the bottom for boring mill portion 3 is provided with junk mill tooth 31, can be with body 1
Rotate, for carrying out brill mill to filler, however, boring the axis in mill portion 3 and the axis phase of body 1
It is mutually parallel and be not arranged on the same straight line, that is, bore the bias of mill portion 3 and be connected on body 1, specifically,
When junk mill is rotated, the pivot center of junk mill is the structure axis of body 1, bores the axis of no-feathering in mill portion 3
The side that line does not then bore the bottom edge of mill portion 3 on the same line, so with the pivot center of junk mill is
The distance of the first side to the pivot center of junk mill is that the second side rotates to junk mill more than the position opposite side
The distance of axis, wherein, the distance of the first side to pivot center is the first radius, the second side to rotation
The distance of axis is the second radius, wherein the first radius is more than the second radius, so, the brill mill portion bottom
A diameter of first radius and the second radius sum in face, and when junk mill is rotated, it is to bore that it rotates diameter
The brill of grind a diameter of first radius two times, i.e. the brill mill portion 3 is ground with diameter greater than its basal diameter.
A kind of junk mill is the embodiment of the invention provides, including：Body and brill mill portion, the top of body is used
In connection bull stick, mill portion is bored in bottom connection, and the bottom in the brill mill portion is provided with junk mill tooth, wherein, bore mill
The structure axis in portion is parallel to each other and is not arranged on the same straight line with the structure axis of body, bore mill portion with
The axis of the body is rotated for axle.Bore mill portion bias and be connected to body, in the process that junk mill is rotated
In, because the pivot center of junk mill is the structure axis of body, it is greater than the rotation diameter in brill mill portion
Its diameter of movement, when mill bore to the filler in oil well by the junk mill, although bore mill portion
Due to needing by the narrow location between filler and well head, its diameter of movement is smaller, but is ground boring
During, the junk mill can carry out the brill mill diameter bigger than its diameter of movement to filler and bore
Mill, thus makes the junk mill in the case of diameter is less, realizes relatively large brill mill diameter, increases
Big brill milling area, and then improve oil exploitation efficiency.
The present invention is described in further detail with reference to the accompanying drawings and examples.
Further, the radial section in body 1 and brill mill portion 3 is all circle；The bottom footpath of body 1
The top radial section for boring mill portion 3 is inscribed within to section.In the embodiment of the present invention, the bottom of body 1
Radial section is inscribed within the top radial section for boring mill portion 3, so, the company in body 1 and brill mill portion 3
The alignment of place one end is connect, the other end bores mill portion 3 and protrudes from body 1, so makes the structure of above-mentioned junk mill tight
Reason is gathered together, can be very good to carry out the filler in sleeve pipe on brill mill, and, the embodiment of the present invention
Structure setting, you can grind intensity with the brill for ensureing junk mill, can make bull stick be easier band junk mill and pass through again
The stenosis of casing inner diameter.
The radial direction interface in body 1 and brill mill portion 3 is all for prototype is a kind of specifically realization side therein
Formula, or rectangle, as shown in figure 3, Fig. 3 is another vertical view of junk mill in Fig. 1 of the present invention
Figure.This present invention is not limited.
In order to junk mill can be made more preferable to the brill mill effect of sleeve pipe inner stuffing, further, mill portion is bored
At least one limbers 32 can be provided with 3 bottom surface, for connecting the cavity in bull stick.The present invention
In embodiment, the attachment structure 2 of above-mentioned junk mill is connected to bull stick, and the first chamber can be provided with the bull stick
Body, first cavity can connect the two ends of the bull stick, and the second cavity can also be provided with junk mill,
Second cavity can connect limbers 32 and attachment structure 2, when above-mentioned junk mill is connected with bull stick,
That is one end of bull stick is connected in the attachment structure 2 of junk mill, the second cavity is connected with the first cavity,
And then the first cavity is connected with limbers 32, so, by the in oil well extroversion bull stick
One cavity injects cooling water, and the cooling water just can enter the second cavity by the first cavity, and pass through
Limbers 32 sprays, and so, junk mill, can be by limbers 32 to junk mill when mill filler is bored
Cooling water is injected between filler, makes junk mill during mill is bored, bore the more lubrication of mill, and
The temperature of junk mill can be reduced, is improved and is bored mill efficiency.
Further, limbers 32 is three, is evenly distributed on the bottom surface for boring mill portion 3.This hair
In bright embodiment, three limbers 32 are evenly distributed on the bottom surface for boring mill portion, for junk mill
Cooling water is injected between tooth 31 and filler, is shown experimentally that, the quantity of limbers 32 very little, is noted
Water is low, and brill mill effect is bad, and limbers 32 is too many, then influence the quantity of junk mill tooth 31, experiment
Summarize, limbers 32 is three optimal.
Alternatively, bottom surface junk mill tooth 31 can use Hardmetal materials, by Hardmetal materials
Brill mill can be effectively carried out to the filler in sleeve pipe, mill efficiency high is bored.
Alternatively, body 1 is to be detachably connected with mill portion 3 is bored.In the embodiment of the present invention, body 1
With bore mill portion 3 to be detachably connected, be connected with the brill mill portion 3 of different model by body 1, can be with
Various brill mill situations are adapted to, when oil casing is larger, can be from larger-diameter brill mill portion 3
It is connected with body 1, when oil casing is smaller, can be with the brill mill portion 3 of selection of small diameter and sheet
Body 1 is connected, and so by changing the brill mill portion 3 of different model junk mill can be made to be applied to various differences
The sleeve pipe of model, use it is very convenient, and, when boring mill portion 3 during mill is bored, hair
During raw infringement, only change and bore mill portion 3.
Alternatively, above-mentioned body 1 can be to be threadedly coupled with mill portion 3 is bored.In the embodiment of the present invention,
Body 1 is threadedly coupled with mill portion 3 is bored, and can very easily carry out changing and bore mill portion 3, wherein originally
The locking direction that body 1 is threadedly coupled with brill mill portion 3 should be the rotation direction of above-mentioned junk mill.
Except in above-described embodiment, body 1 is outer to be detachably connected with brill mill portion 3, and the present invention is implemented
In example, body 1 can be structure as a whole with mill portion 3 is bored, and such structure setting, bonding strength is big,
Long service life.
Specifically, attachment structure 2 includes screw thread, for being threadedly connected to bull stick.The embodiment of the present invention
In, the attachment structure 2 of junk mill is threadedly connected to bull stick, and allow that junk mill is connected with bull stick is very firm
Gu, and in use, dismount also very convenient.
A kind of junk mill is the embodiment of the invention provides, including：Body and brill mill portion, the top of body is used
In connection bull stick, mill portion is bored in bottom connection, and the bottom in the brill mill portion is provided with junk mill tooth, wherein, bore mill
The structure axis in portion is parallel to each other and is not arranged on the same straight line with the structure axis of body, bore mill portion with
The axis of the body is rotated for axle.Bore mill portion bias and be connected to body, in the process that junk mill is rotated
In, because the pivot center of junk mill is the structure axis of body, it is greater than the rotation diameter in brill mill portion
Its diameter of movement, when mill bore to the filler in oil well by the junk mill, although bore mill portion
Due to needing by the narrow location between filler and well head, its diameter of movement is smaller, but is ground boring
During, the junk mill can carry out the brill mill diameter bigger than its diameter of movement to filler and bore
Mill, thus makes the junk mill in the case of diameter is less, realizes relatively large brill mill diameter, increases
Big brill milling area, and then improve oil exploitation efficiency.
Fig. 4 is the milling area schematic diagram of structure shown in Fig. 2 of the present invention；As shown in figure 4,4 areas of circle
It is milling area.
Fig. 5 is the milling area schematic diagram of structure shown in Fig. 3 of the present invention, as shown in figure 5,5 areas of circle
It is milling area.
One of ordinary skill in the art will appreciate that：Realize all or part of above-mentioned each method embodiment
Step can be completed by the related hardware of programmed instruction.Foregoing program can be stored in a calculating
In machine read/write memory medium.Upon execution, execution includes the step of above-mentioned each method embodiment to the program
Suddenly；And foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be deposited
Store up the medium of program code.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than
It is limited；Although being described in detail to the present invention with reference to foregoing embodiments, this area
Those of ordinary skill should be understood：It can still enter to the technical scheme described in foregoing embodiments
Row modification, or equivalent is carried out to which part or all technical characteristic；And these modification or
Person replaces, and does not make the model of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution
Enclose.
Claims (9)
1. a kind of junk mill, it is characterised in that the junk mill is applied to field of oil drilling, the mill
Footwear include：
Body, the top of the body is provided with attachment structure, and the attachment structure is used to connect bull stick；
Mill portion is bored, the top in the brill mill portion is connected to the bottom of the body, the bottom in the brill mill portion
Face is provided with bottom surface junk mill tooth, and the junk mill tooth is used to bore mill hard material；
The diameter with diameter greater than the body for boring mill portion, the axis in the brill mill portion with described
The axis of body is parallel to each other and is not arranged on the same straight line, and the brill mill portion is with the axis of the body
Axle is rotated.
2. junk mill according to claim 1, it is characterised in that
The bottom surface for boring mill portion is provided with least one limbers, for connecting the cavity in bull stick.
3. junk mill according to claim 2, it is characterised in that
The limbers is three, is evenly distributed on the bottom surface in the brill mill portion.
4. junk mill according to claim 3, it is characterised in that
The bottom surface junk mill tooth uses Hardmetal materials.
5. the junk mill according to any one of Claims 1-4, it is characterised in that
The body is to be detachably connected with the brill mill portion.
6. junk mill according to claim 5, it is characterised in that
The body is to be threadedly coupled with the brill mill portion.
7. the junk mill according to any one of Claims 1-4, it is characterised in that
The body is structure as a whole with the brill mill portion.
8. the junk mill according to any one of Claims 1-4, it is characterised in that
The attachment structure includes screw thread, for being threadedly connected to the bull stick.
9. junk mill according to claim 1, it is characterised in that
The radial section in the body and the brill mill portion is all circle；
The bottom radial section of the body is inscribed within the top radial section in the brill mill portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510968910.3A CN106907122A (en) | 2015-12-22 | 2015-12-22 | Junk mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510968910.3A CN106907122A (en) | 2015-12-22 | 2015-12-22 | Junk mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106907122A true CN106907122A (en) | 2017-06-30 |
Family
ID=59200229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510968910.3A Pending CN106907122A (en) | 2015-12-22 | 2015-12-22 | Junk mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106907122A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8403049B2 (en) * | 2005-03-12 | 2013-03-26 | Thru Tubing Solutions, Inc. | Methods and devices for one trip plugging and perforating of oil and gas wells |
| CN203257358U (en) * | 2012-09-20 | 2013-10-30 | 中国石油集团长城钻探工程有限公司工程服务公司 | Continuous oil pipe high-efficiency milling shoe |
| CN203640650U (en) * | 2013-10-15 | 2014-06-11 | 深圳市百勤石油技术有限公司 | Oil well milling shoe tool |
| CN203867505U (en) * | 2014-05-30 | 2014-10-08 | 中国石油化工股份有限公司 | Milling shoe for borehole operation |
-
2015
- 2015-12-22 CN CN201510968910.3A patent/CN106907122A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8403049B2 (en) * | 2005-03-12 | 2013-03-26 | Thru Tubing Solutions, Inc. | Methods and devices for one trip plugging and perforating of oil and gas wells |
| CN203257358U (en) * | 2012-09-20 | 2013-10-30 | 中国石油集团长城钻探工程有限公司工程服务公司 | Continuous oil pipe high-efficiency milling shoe |
| CN203640650U (en) * | 2013-10-15 | 2014-06-11 | 深圳市百勤石油技术有限公司 | Oil well milling shoe tool |
| CN203867505U (en) * | 2014-05-30 | 2014-10-08 | 中国石油化工股份有限公司 | Milling shoe for borehole operation |
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Application publication date: 20170630 |
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