CN205840808U - A kind of back reaming regulator - Google Patents
A kind of back reaming regulator Download PDFInfo
- Publication number
- CN205840808U CN205840808U CN201620707620.3U CN201620707620U CN205840808U CN 205840808 U CN205840808 U CN 205840808U CN 201620707620 U CN201620707620 U CN 201620707620U CN 205840808 U CN205840808 U CN 205840808U
- Authority
- CN
- China
- Prior art keywords
- regulator
- cutting tooth
- wear
- chamfered
- resistant strip
- 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.)
- Expired - Fee Related
Links
Abstract
This utility model is a kind of back reaming regulator, the female connector including regulator body, being connected to body upper end, regulator and the male joint being connected to body lower end, regulator, the spiral type wear-resistant strip of projection it is provided with in the middle part of the body of regulator, the upper end of wear-resistant strip is provided with lead-in chamfered, and lead-in chamfered is provided with cutting tooth.This utility model can reduce task difficulty during back reaming operation, reduces the risk of back reaming.
Description
Technical field
This utility model relates to oil drilling tool field, is specifically related to a kind of regulator with back reaming function.
Background technology
Drilling crew often encounters in drillng operation and is hampered pulling out of hole when, is unable to lift and (has carried tens tons also more
It is to be unable to lift, dare not act very much again carrying, be afraid of to bore pole and put off), and transfer situation about the most easily discharging.Produce the reason of this situation
It is to produce the reasons such as undergauge in irregular, the mud drum by drilling shaft lining or well.And the place being hampered is the most all in regulator
The place contacted with the borehole wall, the wear-resistant strip of regulator directly contacts with the borehole wall, regulator external diameter only less several millimeters than well (if
Excesssive gap does not just have stable effect), as long as so the well on top, regulator somewhat has not rule or contracting
Little all can cause trip-out difficulty.Being accomplished by back reaming operation (Bian Shangti, limit rotates) in this case, traditional back reaming is made
Industry risk is bigger.
Summary of the invention
The purpose of this utility model is to provide a kind of back reaming regulator, it is possible to operation when reducing back reaming operation is difficult
Degree, reduces the risk of back reaming.The purpose of this utility model is achieved through the following technical solutions.
A kind of back reaming regulator, the female connector including regulator body, being connected to body upper end, regulator and connection
The spiral type wear-resistant strip of projection it is provided with in the middle part of the male joint of body lower end, regulator, described regulator body, described resistance to
The upper end of grinding belt is provided with lead-in chamfered, and described lead-in chamfered is provided with cutting tooth.
Further, described cutting tooth is PDC composite sheet.
Further, described PDC composite sheet is cylindrical, and the axis of described cylinder and the angle of horizontal plane are 14 °.
Further, described PDC composite sheet is connected with described regulator body by low temperature brazing.
Further, described wear-resisting with 6 and along the distribution of regulator body even circumferential.
Further, every wear-resistant strip being provided with the cutting tooth of more than 3, described cutting tooth inclines along described lead-in chamfered
Tilted direction arranges, and the distance of cutting tooth and regulator axis is successively in arithmetic sequence.
Further, described female connector is that dual stage takes on female thread structure, described male joint dual stage shoulder external thread structure.
The beneficial effects of the utility model are:
(1) upper end of this utility model regulator wear-resistant strip, several pieces cutting teeth of special setting, solve in drillng operation
It is hampered the when of being frequently encountered by trip-out, the problem being unable to lift.
(2) this utility model regulator wear-resistant strip uses 6 righting band designs, than 3 righting band regulators of tradition and well
Wall contact area doubles above, makes the righting of regulator be strengthened with Stabilization.
(3) this utility model is compared with regulator of the prior art, and its two ends joint screw thread is owing to using dual stage shoulder spiral shell
Stricture of vagina connects, and this screw thread has the advantage that intensity is high, makes the long working life of regulator be improved.
Below in conjunction with the accompanying drawings and this utility model is described in further detail by detailed description of the invention.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Accompanying drawing illustrates: 1. female connector；2. regulator body；3. cutting tooth；4. wear-resistant strip；5. male joint.
Detailed description of the invention
As it is shown in figure 1, a kind of back reaming regulator, including regulator body 2, the mother that is connected to regulator body 2 upper end
Buckle joint 1 and the male joint 5 being connected to regulator body 2 lower end, the spiral type being provided with projection in the middle part of regulator body 2 is resistance to
Grinding belt 4, the upper end of wear-resistant strip 4 is provided with lead-in chamfered, and lead-in chamfered is provided with cutting tooth 3.
Cutting tooth 3 is PDC composite sheet, i.e. composite polycrystal-diamond, and PDC composite sheet is stable with described by low temperature brazing
Device body connects, and the axis of described cylinder and the angle of horizontal plane are 14 °.Wear-resisting with 6 and along regulator body circumference
It is uniformly distributed, every wear-resistant strip is provided with equal number of cutting tooth.The cutting tooth of more than 3 it is provided with on every wear-resistant strip
And be arranged in a row along the direction that described lead-in chamfered tilts.The distance of cutting tooth and regulator axis is successively in arithmetic sequence.Also
That is each cutting tooth on same wear-resistant strip is different to the distance of regulator axis, the line of cutting tooth can not
Parallel with the axis of regulator.
Female connector 1 takes on female thread structure, described male joint 5 dual stage shoulder external thread structure for dual stage.
When carry on drilling tool be hampered time, limit rotates on (rotating forward) limit and carries drilling tool, and top, the regulator borehole wall is carried out by back reaming tooth
Cut pin, make top, regulator hole diameter gradually expand, until whole drilling tool proposes outside well.
In trip-out process, often due to the reasons such as hole shrinkage cause pull out of hole difficulty, now, the back water on this regulator
Eye tooth can play shear action, to eliminate the phenomenons such as undergauge, thus saves plenty of time and expense for drilling well.This kind of regulator has six
Bar wear-resistant strip, increases the contact area of regulator and the borehole wall, makes drill string more steadily reliable when rotary drilling.This kind stable
Device two ends are connected by dual stage shoulder screw thread design, can increase drilling tool moment of torsion, prevent drilling tool fracture failure accident from occurring.
Operation principle of the present utility model: this utility model is special setting in the upper end lead-in chamfered of ordinary stabilizer
Several pieces cuttings tooth (back reaming tooth), this kind of back reaming tooth is with in PDC composite sheet low temperature brazing to stable body, through design
Calculate and finally determine through repetition test angle and the distribution of back reaming tooth.Brill is carried on limit rotating forward limit trip-out is hampered when
Tool, the borehole wall that is so irregular or that reduce first connects really, owing to back reaming tooth exists certain anterior angle and relief angle, just with back reaming tooth
As lathe tool, the borehole wall reduced is cut pin, make hole diameter gradually expand, until whole drilling tool proposes outside well.
Claims (7)
1. a back reaming regulator, the female connector including regulator body, being connected to body upper end, regulator and being connected to
The male joint of body lower end, regulator, is provided with the spiral type wear-resistant strip of projection in the middle part of the body of described regulator, its feature exists
In: the upper end of described wear-resistant strip is provided with lead-in chamfered, and described lead-in chamfered is provided with cutting tooth.
Regulator the most according to claim 1, it is characterised in that: described cutting tooth is PDC composite sheet.
Regulator the most according to claim 2, it is characterised in that: described PDC composite sheet is cylindrical, described cylinder
Axis is 14 ° with the angle of horizontal plane.
Regulator the most according to claim 2, it is characterised in that: described PDC composite sheet by low temperature brazing with described surely
Determine device body to connect.
Regulator the most according to claim 1, it is characterised in that: described wear-resisting with 6 and along regulator body circumference
It is uniformly distributed.
Regulator the most according to claim 5, it is characterised in that: it is provided with the cutting tooth of more than 3 on every wear-resistant strip,
Described cutting tooth arranges along described lead-in chamfered incline direction, and the distance of cutting tooth and regulator axis is successively in arithmetic sequence.
Regulator the most according to claim 1, it is characterised in that: described female connector is that dual stage takes on female thread structure, institute
State male joint dual stage shoulder external thread structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707620.3U CN205840808U (en) | 2016-07-07 | 2016-07-07 | A kind of back reaming regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707620.3U CN205840808U (en) | 2016-07-07 | 2016-07-07 | A kind of back reaming regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205840808U true CN205840808U (en) | 2016-12-28 |
Family
ID=58150727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620707620.3U Expired - Fee Related CN205840808U (en) | 2016-07-07 | 2016-07-07 | A kind of back reaming regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205840808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
-
2016
- 2016-07-07 CN CN201620707620.3U patent/CN205840808U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533180A (en) * | 2018-04-24 | 2018-09-14 | 中国海洋石油集团有限公司 | A kind of drilling engineering is with boring hole-drawing device and reaming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170727 Granted publication date: 20161228 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200727 Granted publication date: 20161228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20190707 |