CN204266946U - Rotary steering stabilizer - Google Patents
Rotary steering stabilizer Download PDFInfo
- Publication number
- CN204266946U CN204266946U CN201420722986.9U CN201420722986U CN204266946U CN 204266946 U CN204266946 U CN 204266946U CN 201420722986 U CN201420722986 U CN 201420722986U CN 204266946 U CN204266946 U CN 204266946U
- Authority
- CN
- China
- Prior art keywords
- rotary steering
- lateral wall
- steering stabilizer
- link
- drill collar
- 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
The utility model rotary steering stabilizer relates to the erection device creeping into middle drill collar of soil layer or rock.Described rotary steering stabilizer, comprises the body of hollow, and the top of body is connected with hollow drill collar link, and the bottom of body is provided with drill bit link, and body lateral wall is provided with several righting strips; The body being positioned at righting strip bottom offers on several and backflows; Backflow on described through body, its one end open is on the inside wall of body, and other end opening is on the lateral wall of body; And the opening on lateral wall and righting strip non-intersect at the extended line of this side, also nozzle is installed.The utility model arranges at nearly drill bit and backflows, and installs nozzle, and part drilling fluid is upwards sprayed in drilling process, forms negative pressure pulsation in shaft bottom, reduces " chip hold down effect ", improves rate of penetration.
Description
Technical field
The utility model relates to the erection device creeping into middle drill collar of soil layer or rock.
Background technology
In deep-well, ultradeep well drilling process, rate of penetration increases with well depth and obviously declines.Major reason is the increase due to bottom hole pressure difference, and landwaste can not be removed in time, causes the repetition of drill bit broken.Improving the general principle of rate of penetration from shaft bottom negative pressure pulsation, by producing bottom-hole flow field negative pressure pulsation, reduction " chip hold down effect " can be played, improve the effect of rate of penetration.
Summary of the invention
The utility model aims to provide one can make part drilling fluid upwards spray in drilling process, forms negative pressure pulsation in shaft bottom, reduces " chip hold down effect ", improves the rotary steering stabilizer of rate of penetration.
The utility model rotary steering stabilizer, comprises the body of hollow, and the top of body is connected with hollow drill collar link, and the bottom of body is provided with drill bit link, and body lateral wall is provided with several righting strips; The body being positioned at righting strip bottom offers on several and backflows; Backflow on described through body, its one end open is on the inside wall of body, and other end opening is on the lateral wall of body; And the opening on lateral wall and righting strip non-intersect at the extended line of this side, also nozzle is installed.
Preferably, backflowing on each forms by left and right two sections that are connected, and form acute angle, and the opening of this acute angle is towards the top of body between described left and right section.
More preferably, in backflowing on described, right section is connected with the opening be arranged on body lateral wall, and the right section of central axis being parallel to body.
Or the inside wall of more preferably, described body is connected with the lateral wall screw thread of drill collar link.
Further preferably, described junction is provided with sealing ring.
Or further preferably, drill collar link is also provided with the screw thread matched with drill collar.
Or more preferably, drill bit link is provided with the screw thread matched with drill bit.
The utility model arranges at nearly drill bit and backflows, and installs nozzle, and part drilling fluid is upwards sprayed in drilling process, forms negative pressure pulsation in shaft bottom, reduces " chip hold down effect ", improves rate of penetration.
The utility model structure is comparatively simple, easy to use, while satisfied conventional near-bit stabilizer effect, effectively can reduce shaft bottom landwaste " chip hold down effect ", improves rate of penetration.
Accompanying drawing explanation
Fig. 1 is the positive view of embodiment one.
In figure, 1-drill collar link, 2-sealing ring, 3-body, 4-righting strip, 5-backflows.
Detailed description of the invention
Embodiment one
As shown in the figure, the utility model rotary steering stabilizer, comprises the body 3 of hollow, and the top of body 3 is connected with hollow drill collar link 1, and the bottom of body 3 is provided with drill bit link, and body 3 lateral wall is provided with several righting strips 4; The body 3 being positioned at righting strip 4 bottom is offered on two symmetrically and has backflowed 5.
Backflow 5 on described through body 3, be made up of left and right two sections of being connected.Left section of opening is on the inside wall of body 3, and right section opening is on the lateral wall of body 3; Form acute angle between left and right section, and the opening of this acute angle is towards the top of body 3.The right section of central axis being parallel to body 3, its opening and righting strip 4 non-intersect at the extended line of this side, and nozzle is installed.
The inside wall of described body 3 is connected with the lateral wall screw thread of drill collar link 1, and junction is provided with sealing ring 2.Drill collar link 1 is also provided with the screw thread matched with drill collar.Drill bit link is provided with the screw thread matched with drill bit.
During use, top drill collar link 1 is for connecting drill collar and keeping the intensity of joint, when normally creeping into, drilling liquid flow is inner through stabilizer body 3, major part drilling fluid flows to bit port downwards, impacts behind shaft bottom and returns along on pit shaft, part drilling fluid directly through above backflow 5 nozzle, enter pit shaft, it flows to constant, and flow velocity is higher, thus forms negative pressure above shaft bottom, reduce " chip hold down effect " of the broken landwaste of shaft bottom drill bit, thus improve rate of penetration.
Claims (7)
1. rotary steering stabilizer, comprises the body (3) of hollow, and the top of body (3) is connected with hollow drill collar link (1), and the bottom of body (3) is provided with drill bit link, and body (3) lateral wall is provided with several righting strips (4); The body (3) that it is characterized in that being positioned at righting strip (4) bottom offers on several backflow (5); Backflow (5) on described through body (3), its one end open is on the inside wall of body (3), and other end opening is on the lateral wall of body (3); And the opening on lateral wall and righting strip (4) non-intersect at the extended line of this side, also nozzle is installed.
2. rotary steering stabilizer as claimed in claim 1, it is characterized in that each on backflow (5) be made up of left and right two sections of being connected, form acute angle between described left and right section, and the opening of this acute angle is towards the top of body (3).
3. rotary steering stabilizer as claimed in claim 2, it is characterized in that described on to backflow in (5) right section and be connected with the opening be arranged on body (3) lateral wall, and the right section of central axis being parallel to body (3).
4. the rotary steering stabilizer as described in claim 1 or 2 or 3, is characterized in that the inside wall of described body (3) is connected with the lateral wall screw thread of drill collar link (1).
5. rotary steering stabilizer as claimed in claim 4, is characterized in that described junction is provided with sealing ring (2).
6. rotary steering stabilizer as claimed in claim 4, is characterized in that drill collar link (1) is also provided with the screw thread matched with drill collar.
7. the rotary steering stabilizer as described in claim 1 or 2 or 3, is characterized in that drill bit link is provided with the screw thread matched with drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420722986.9U CN204266946U (en) | 2014-11-27 | 2014-11-27 | Rotary steering stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420722986.9U CN204266946U (en) | 2014-11-27 | 2014-11-27 | Rotary steering stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204266946U true CN204266946U (en) | 2015-04-15 |
Family
ID=52801818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420722986.9U Expired - Fee Related CN204266946U (en) | 2014-11-27 | 2014-11-27 | Rotary steering stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204266946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781442A (en) * | 2016-03-11 | 2016-07-20 | 柳超 | Automatic locating mechanism for downhole drill pillar |
-
2014
- 2014-11-27 CN CN201420722986.9U patent/CN204266946U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781442A (en) * | 2016-03-11 | 2016-07-20 | 柳超 | Automatic locating mechanism for downhole drill pillar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20201127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |