CN209724230U - A kind of drill-following reaming bit - Google Patents
A kind of drill-following reaming bit Download PDFInfo
- Publication number
- CN209724230U CN209724230U CN201920078322.6U CN201920078322U CN209724230U CN 209724230 U CN209724230 U CN 209724230U CN 201920078322 U CN201920078322 U CN 201920078322U CN 209724230 U CN209724230 U CN 209724230U
- Authority
- CN
- China
- Prior art keywords
- drill
- reaming
- drill bit
- radius
- bit
- 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.)
- Active
Links
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model provides a kind of drill-following reaming bit, including neck eye body and reaming hole body, leads the length of the gage portion of eye body no more than the half of the entire length of neck eye body, the radius of neck eye body is greater than the half of drill bit radius, less than the 93% of drill bit radius.Stability, controllability and directional properties are good.
Description
Technical field
The utility model belongs to the drilling equipments technical field such as petroleum gas, and in particular to a kind of drill-following reaming bit.
Background technique
Drill-following reaming bit is also known as Double Circular Bit, is common boring tool of following drilling in drilling engineering, is frequently utilized for old well
Enlarging while drilling construction under the conditions of deep drilling, sidetracking etc..Drill-following reaming bit is eccentric structure body, and bit cutting structure is asymmetric,
Especially reaming hole body is bias structure on drill bit, and service load, cross force and torque when drill bit is crept on reaming hole body etc. are no
It is balanced, unstable so that when directional drilling bit operation face be difficult to control, thus cause drill bit drilling stability and can
Control property is deteriorated so that drill bit directional properties are poor.
Utility model content
The technical problems to be solved in the utility model be overcome the deficiencies of the prior art and provide a kind of drilling stability, can
Control property and the good drill-following reaming bit of directional properties.
In order to solve the above technical problems, the utility model proposes technical solution are as follows:
A kind of drill-following reaming bit, including neck eye body and reaming hole body lead the length of the gage portion of eye body no more than neck eye
The radius of the half of the entire length of body, neck eye body is greater than the half of drill bit radius, less than the 93% of drill bit radius.
Drill-following reaming bit according to the present utility model, since the length of the gage portion of neck eye body is shorter, to control
The overall length of drill bit, cross force and turning torque caused by drill bit dissymmetrical structure, subtract when also reducing drill bit drilling
Lack opposite orientation power when drill bit orientation, enhances stability and controllability of the drill bit in directional drilling, directional effect is more preferable.
In addition, keeping drill bit out-of-balance force smaller since the length of the gage portion of neck eye body is shorter, work more stable, therefore reduce
The abnormal damage of Cutter, can be obviously prolonged the service life of drill bit, and improve drill bit reaming hole effect.Again, eye body is led
Gage portion length it is shorter, out-of-balance force is smaller, the operation is stable, be conducive to improve hole quality.
For above-mentioned technical proposal, the further improvement that can also be discussed below.
Drill-following reaming bit according to the present utility model, in one preferred embodiment, the gage portion of reaming hole body
Length no more than reaming hole body entire length half.
The entire length that entire drill bit can further be reduced in this way thereby further ensures that enhancing drill bit in Directional Drilling
Into when stability, controllability and directional effect.In addition, can further ensure that drill bit out-of-balance force reduces, work more stable,
Therefore the abnormal damage that Cutter can be further decreased, can further extend the service life of drill bit, and improve drill bit
Reaming hole effect.Again, hole quality can be further increased.
Further, in one preferred embodiment, reaming hole body includes several grades of reaming hole body structures.
The reaming hole rate of single-stage reaming hole is limited, and reaming hole body is more, and drill bit totality reaming hole rate is higher.It can using multistage reaming hole structure
Improve reaming hole rate.
Specifically, in one preferred embodiment, reaming hole body includes 2~4 grades of reaming hole body structures.
Reaming hole body is more, and the total length of bit cutting structure is longer, if the too long drilling well that will affect drill bit of length is stablized
Property, controllability and directional properties, therefore the reaming hole body structure controlled within the scope of 2~4 grades is kept away under the premise of improving reaming hole rate
Exempt to influence drilling stability, controllability and directional properties.
Specifically, in one preferred embodiment, the length of the diameter moiety of every level-one reaming hole body structure is equal
The half of the entire length of no more than this grade reaming hole body structure.
This structure type can reduce the length of entire drill bit as far as possible, so that it is guaranteed that entire drill bit drilling well is stablized
Property, controllability and directional properties are good.
Specifically, in one preferred embodiment, it leads the radius of eye body to be greater than the 70% of drill bit radius, is less than drill bit
The 90% of radius.
Specifically, in another preferred embodiment, it leads the radius of eye body to be greater than the 80% of drill bit radius, is less than and bores
The 90% of head radius.
Compared with the prior art, the advantages of the utility model are: stability, controllability and directional properties are good.
Detailed description of the invention
Hereinafter the utility model will be described in more detail based on the embodiments and with reference to the accompanying drawings.Wherein:
Fig. 1 schematically illustrates the structure of the drill-following reaming bit of the utility model embodiment 1；
Fig. 2 schematically illustrates the structure of the drill-following reaming bit of the utility model embodiment 2.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but is not therefore limited
The protection scope of the utility model processed.
Fig. 1 schematically illustrates the structure of the drill-following reaming bit 10 of the utility model embodiment 1.Fig. 2 is schematically shown
The structure of the drill-following reaming bit 10 of the utility model embodiment 2.
Embodiment 1
As shown in Figure 1, in the utility model embodiment, drill-following reaming bit 10, including neck eye body 1 and reaming hole body 2.Neck
Half of the length h0 of the gage portion of eye body 1 no more than neck 1 entire length H0 of eye body.The h1 of the gage portion of reaming hole body 2 is not
Greater than the half of 2 entire length H1 of reaming hole body, the radius of eye body is led to be greater than the half of drill bit radius, less than drill bit radius
93%.
According to the drill-following reaming bit of the utility model embodiment, since the length of the gage portion of neck eye body is shorter, from
And the overall length of drill bit is controlled, cross force and tilting force caused by drill bit dissymmetrical structure when also reducing drill bit drilling
Square reduces opposite orientation power when drill bit orientation, enhances stability and controllability of the drill bit in directional drilling, directional effect
More preferably.In addition, keeping drill bit out-of-balance force smaller since the length of the gage portion of neck eye body is shorter, work more stable, therefore subtract
The small abnormal damage of Cutter, can be obviously prolonged the service life of drill bit, and improve drill bit reaming hole effect.Again, it leads
The length of the gage portion of eye body is shorter, and out-of-balance force is smaller, the operation is stable, is conducive to improve hole quality.Due to reaming hole body
Gage portion length no more than reaming hole body entire length half.The whole of entire drill bit can further be reduced in this way
Body length thereby further ensures that stability, controllability and directional effect of the enhancing drill bit in directional drilling.In addition, can
It further ensures that drill bit out-of-balance force reduces, works more stable, therefore the abnormal damage of Cutter can be further decreased,
The service life of drill bit can further be extended, and improve drill bit reaming hole effect.Again, hole quality can be further increased.
In a unshowned embodiment, the radius of neck eye body 1 is greater than the 70% of drill bit radius, less than drill bit radius
90%.In another unshowned embodiment, the radius of neck eye body 1 is greater than the 80% of drill bit radius, less than drill bit radius
90%.
Embodiment 2
As shown in Fig. 2, in the utility model embodiment, drill-following reaming bit 10 ', including neck eye body 1 ' and reaming hole body
2'.Reaming hole body 2 ' includes several grades of reaming hole body structures 21 ', preferably 2~4 grades of reaming hole body structures 21 ', and especially preferably 2 grades.Often
The half of the entire length of no more than this grade reaming hole body structure 21 ' of length of the gage portion of level-one reaming hole body structure 21 '.I.e.
Half of the length h1 of the gage portion of first order reaming hole body structure 21 ' no more than this grade of 21 ' length H1 of reaming hole body structure, second
The length h2 of the gage portion of grade reaming hole body structure 21 ' is not more than the half of this grade of 21 ' length H2 of reaming hole body structure.This structure
Form can reduce the length of entire drill bit as far as possible, so that it is guaranteed that entire drill bit drilling stability, controllability and directionality
It can be good.
The reaming hole rate of single-stage reaming hole is limited, and reaming hole body is more, and drill bit totality reaming hole rate is higher.It can using multistage reaming hole structure
Improve reaming hole rate.Since reaming hole body is more, and the total length of bit cutting structure is longer, the too long drilling well that will affect drill bit of length
Stability, controllability and directional properties.Therefore, reaming hole rate can guarantee using multistage reaming hole, 2~4 grades of reaming hole body structures is selected to mention
Guarantee job stability, controllability and the directional properties of drill bit while high reaming hole rate.
According to above-described embodiment, it is seen then that the utility model relates to drill-following reaming bit, stability, controllability and orientation
Performance is good.
Although the present utility model has been described by reference to the preferred embodiments, but the scope of the utility model is not being departed from
In the case where, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as being not present
Structural conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The utility model is simultaneously
It is not limited to specific embodiment disclosed herein, but all technical solutions including falling within the scope of the claims.
Claims (7)
1. a kind of drill-following reaming bit, including neck eye body and reaming hole body, which is characterized in that the length of the gage portion of the neck eye body
Degree is not more than the half of the entire length of the neck eye body, and the radius of the neck eye body is greater than the half of drill bit radius, is less than brill
The 93% of head radius.
2. drill-following reaming bit according to claim 1, which is characterized in that the length of the gage portion of the reaming hole body is not
Greater than the half of the entire length of the reaming hole body.
3. drill-following reaming bit according to claim 1 or 2, which is characterized in that the reaming hole body includes several grades of reaming holes
Body structure.
4. drill-following reaming bit according to claim 3, which is characterized in that the reaming hole body includes 2~4 grades of reaming hole body knots
Structure.
5. drill-following reaming bit according to claim 3, which is characterized in that the gauge of reaming hole body structure described in every level-one
Half of the length divided no more than the entire length of this grade of reaming hole body structure.
6. drill-following reaming bit according to claim 1 or 2, which is characterized in that the radius of the neck eye body is greater than drill bit
The 70% of radius, less than the 90% of drill bit radius.
7. drill-following reaming bit according to claim 1 or 2, which is characterized in that the radius of the neck eye body is greater than drill bit
The 80% of radius, less than the 90% of drill bit radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920078322.6U CN209724230U (en) | 2019-01-17 | 2019-01-17 | A kind of drill-following reaming bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920078322.6U CN209724230U (en) | 2019-01-17 | 2019-01-17 | A kind of drill-following reaming bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209724230U true CN209724230U (en) | 2019-12-03 |
Family
ID=68680211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920078322.6U Active CN209724230U (en) | 2019-01-17 | 2019-01-17 | A kind of drill-following reaming bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209724230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151013A (en) * | 2021-11-19 | 2022-03-08 | 中煤科工集团西安研究院有限公司 | Large-diameter hole expanding drill bit while drilling in underground coal mine |
-
2019
- 2019-01-17 CN CN201920078322.6U patent/CN209724230U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151013A (en) * | 2021-11-19 | 2022-03-08 | 中煤科工集团西安研究院有限公司 | Large-diameter hole expanding drill bit while drilling in underground coal mine |
| CN114151013B (en) * | 2021-11-19 | 2023-08-11 | 中煤科工集团西安研究院有限公司 | Underground large-diameter reaming while drilling bit for coal mine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204639254U (en) | A kind of carbide drill reaming and milling composite cutter | |
| CN209724230U (en) | A kind of drill-following reaming bit | |
| CN205977105U (en) | Anti -sticking bores diamond bit | |
| CN102371380A (en) | Porous multifunctional cutter | |
| CN102554323A (en) | Straight fluted drill | |
| CN201516516U (en) | High-strength deep hole spiral bit | |
| CN2663065Y (en) | Multifunctional twist-drill | |
| CN202752674U (en) | Groove milling cutter for inclined hole drilling | |
| CN206374042U (en) | Adjustable openings device drill bit | |
| CN204899784U (en) | Novel quick streamlined rock drilling bore bit | |
| CN205110891U (en) | Sword is bored to chamfer | |
| CN204984276U (en) | From fast tooth that bores of combined machining sword of taking cutting angle | |
| CN212823119U (en) | Stepped reamer | |
| CN104551245A (en) | Composite reamer | |
| CN208961069U (en) | It is a kind of to bore high-intensitive, high hardness alloy material essence hole fluted drill | |
| CN203236066U (en) | Reamer for integrally forming and processing throttle valve body | |
| CN201720500U (en) | Machining cutter for drilling small-diameter and flat-bottom blind hole | |
| CN102383738A (en) | Method and device for improving deep hole forming rate of bedding layer of coal mine | |
| CN205764067U (en) | A kind of ladder point high performance twist-drill | |
| CN205330542U (en) | Diamond compact piece multiple wing indent drill bit | |
| CN206028818U (en) | Drill | |
| CN206981825U (en) | A kind of alloy bit for being easy to chip removal | |
| CN207824028U (en) | A kind of combined type drill gun | |
| CN202479568U (en) | Straight channel drill | |
| CN202491315U (en) | Two-section type percussion bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |