CN203729920U - Tubing anchor and slips thereof - Google Patents
Tubing anchor and slips thereof Download PDFInfo
- Publication number
- CN203729920U CN203729920U CN201320890509.9U CN201320890509U CN203729920U CN 203729920 U CN203729920 U CN 203729920U CN 201320890509 U CN201320890509 U CN 201320890509U CN 203729920 U CN203729920 U CN 203729920U
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- China
- Prior art keywords
- slips
- slip
- tubing anchor
- slip insert
- angle
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- 241000239290 Araneae Species 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000003129 oil well Substances 0.000 abstract description 7
- 238000004873 anchoring Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model provides an oil pipe anchor and slips thereof. The tubing anchor slip comprises a main body structure and slip teeth, wherein the main body structure comprises a base, a slope surface and a clamping groove; the base is connected with the corresponding slip seat and used for fixing the relative position of the slip on the tubing anchor; the slope surface is combined with the upper joint of the tubing anchor when the slips and the upper joint of the tubing anchor move relatively; the clamping groove is a concave groove and is positioned at the upper part of the base; the slip teeth are serrated and are positioned on the opposite surface of the slope surface; the front angle degree and the rear angle degree of the slip teeth are equal; the value range of the degree D of the front angle and the back angle of the slip is as follows: d is more than or equal to 40 degrees and less than or equal to 55 degrees. The utility model provides an oil pipe anchor slips can reduce the damage of slips to sleeve pipe and self, can improve the oil well simultaneously, and anchoring operation's success rate is relieved to especially horizontal well deflecting department oil pipe anchor.
Description
Technical field
The utility model relates to oil well mining equipment, particularly a kind of tubing anchor and slips thereof.
Background technology
In oil exploitation operation, in order to prevent that oil pipe from wriggling up and down and rotating, cause oil pipe eccentric wear, even loss parts, adopt the method that tubing anchor is installed to come grappling and protection oil pipe conventionally.Described tubing anchor is arranged on flow string below conventionally, be a kind of for the production of or service shaft in mainly play the downhole hardware of anchoring string effect.
The grappling function of existing tubing anchor is mainly to utilize the relative motion of top connection and slips while transferring central tube, forces slips outwards to open, and makes the slip insert on slips outside clamp near jail the inwall at sleeve pipe, the position of fixed center pipe in sleeve pipe.In removing grappling, above carry central tube, make top connection depart from slips, the spring leaf on tubing anchor resets slips, makes the slip insert on slips depart from internal surface of sleeve pipe, thereby removes grappling.
Slip insert on existing tubing anchor slips is arranged to the certain angle that is inclined upwardly conventionally, is the structure of reversed acanthoid.Although this structure has been strengthened the grappling effect of tubing anchor, but removing grappling especially in the time that horizontal well slanting section is removed grappling operation, often occur spring leaf fail to make slips reset or completely reset, cause slips sticker at internal surface of sleeve pipe, the structure of its reversed acanthoid makes the pick-up drag of central tube very large.Even occur that slip insert is stuck in internal surface of sleeve pipe, cannot contact grappling, thereby cause removing grappling failure.Meanwhile, due to common arrange more sharp-pointed of slip insert cusp, stress concentrates on slip insert cusp place, in the time of tubing anchor grappling, there will be slip insert inlay card to internal surface of sleeve pipe, causes the damage of slips to sleeve pipe, also can cause the damage of slips self simultaneously.
Utility model content
The utility model provides a kind of tubing anchor and slips thereof.This tubing anchor slips can improve oil well especially in oil well the tubing anchor of horizontal well slanting section remove the success rate of grappling operation, the utility model can also reduce the slips of tubing anchor in oil well operation to the damage of sleeve pipe simultaneously.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A kind of tubing anchor slips, comprises agent structure and slip insert, wherein:
Described agent structure comprises base, slope, draw-in groove; Described base is connected with corresponding slip spider, the relative position for stationary slip on tubing anchor; Described slope combines with the top connection of tubing anchor in the time of the top connection relative motion of slips and tubing anchor; Described draw-in groove is recessed groove, is positioned at described base top;
Described slip insert is zigzag, is positioned at the opposite of described slope; The front angle number of described slip insert equates with rear angle number; The span of the number of degrees D of the anterior angle of described slips tooth and relief angle is: 40 °≤D≤55 °.
A kind of tubing anchor slips described above, its preferred version is that the value of the number of degrees D of the anterior angle of described slip insert and relief angle is 45 degree.
A kind of tubing anchor slips described above, its preferred version is that the span of the cusp width L of described slip insert is: 0.1mm≤L≤0.5mm.
A kind of tubing anchor slips described above, its preferred version is that the value of the cusp width L of described slip insert is 0.15 millimeter.
The utility model also provides a kind of tubing anchor, comprise top connection (1), central tube (2), slips (3), spring (4), slip spider (5), fixed structure (6), centralizer (7), slip ring structure (8), lower contact (9), wherein, described top connection (1) is set in central tube (2) upper end; Spring (4) is arranged in the draw-in groove of slips (3); The base of slips (3) is connected with slip spider (5); The slips element of construction of slips (3), spring (4), slip spider (5) composition is fixed on the upper end of described centralizer (7) by fixed structure (6); Described centralizer (7) is set on central tube, in the below of described top connection (1); Described slip ring structure (8) is fixedly connected on the lower end of described centralizer (7) by fixed structure (6); Described lower contact (9) is arranged on the lower end of described central tube (2), and wherein, described slips (3) is any one tubing anchor slips described above.
Improve at anterior angle and the relief angle angle of inclination of the tubing anchor slips that the utility model provides to slip insert, adopted the slip insert anterior angle angle of inclination structure consistent with relief angle angle of inclination, thereby while having avoided above carrying or transferring central tube, the slip insert of reversed acanthoid blocks at internal surface of sleeve pipe.Especially at horizontal well slanting section, the slip insert that anterior angle is consistent with relief angle angle of inclination can maximize and decompose the resistance of irregular internal surface of sleeve pipe to slip insert while raising and decentralizing central tube, reduce task difficulty and operation easier, improved the success rate of tubing anchor in horizontal well slanting section releasing grappling.Simultaneously; the utility model is arranged to the sharp comer of original slip insert to have the cusp of certain width, when guarantee slip insert is only held sleeve pipe, has reduced again slip insert to sleeve pipe and the damage of self; improve the application life of tubing anchor self, also protected corresponding power tool.
Brief description of the drawings
Fig. 1 is the tubing anchor slips structural representation described in embodiment 1 in the utility model;
Fig. 2 is that in the utility model, the cusp width described in embodiment 1 is the tubing anchor slips structural representation of 0.15 millimeter;
Fig. 3 is a kind of tubing anchor structure described in embodiment 1 and each parts annexation schematic diagram in the utility model.
Detailed description of the invention
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the utility model protection.
A kind of tubing anchor slips that embodiment 1 provides for the utility model.Fig. 1 is the structural representation of the tubing anchor slips that provides of the utility model embodiment 1.As shown in Figure 1, described tubing anchor slips comprises agent structure 301, slip insert 302, wherein:
Described agent structure 301 can comprise base 3011, slope 3012, draw-in groove 3013; Described base 3011 is connected with corresponding slip spider, the relative position for stationary slip on tubing anchor; Described slope 3012, in the time of the top connection relative motion of slips and tubing anchor, combines with the top connection of tubing anchor, forces slips outwards to open; Described draw-in groove 3013 is recessed groove, is positioned at described base 3011 tops, for the spring that slips is resetted is installed;
Described slip insert 302 is zigzag, is positioned at the opposite of described slope 3012; The front angle number of described slip insert 302 equates with the rear angle number of described slip insert 302.As shown in Figure 1, described anterior angle, relief angle typically refer to the inclined-plane of slip insert sawtooth and the angle perpendicular to slip insert base straight line.Wherein, in a slip insert, be anterior angle near the inclined-plane at slips top and described angle perpendicular to slip insert base straight line.Correspondingly, another inclined-plane of slip insert and described angle perpendicular to slip insert base straight line are relief angle.Through repeatedly theoretical calculating and field experiment, the span of the number of degrees D of the anterior angle of described slip insert 302 and relief angle is between 40 ° to 55 ° time, tubing anchor slips of the present utility model can firmly be anchored on internal surface of sleeve pipe, again can be good remove grappling operation.The value of the number of degrees D of the anterior angle of slip insert 302 and relief angle described in the present embodiment 1 is 45 degree.
The tubing anchor slips providing in the present embodiment 1, adopt the anterior angle structure consistent with rear angle number of slip insert, avoid the reversed acanthoid structure of slip insert, reduced the resistance while carrying on tubing anchor central tube, improved in oil well horizontal well slanting section especially and remove the success rate of grappling operation.
Fig. 2 is second example structure schematic diagram that the utility model provides tubing anchor slips.
As shown in Figure 2, the structure of the tubing anchor slips that the present embodiment 2 provides is identical with embodiment 1, and difference is, the cusp of slip insert 302 described in the present embodiment 2 is the flat-tope structure of 0.15 mm wide.It is very sharp-pointed that the slip insert of existing slips arranges slip insert conventionally in the time that processing is processed, and the width L of general cusp is below 0.08 millimeter.In the present embodiment 2, the cusp width L of slip insert is set to 0.15 millimeter, through field trial repeatedly, the grappling tube inner wall that this cusp width can be good, can reduce again oil pipe and the damage of self.
Through field trial repeatedly, the span of the cusp width L of slip insert 302 described in the present embodiment 2 can be also: 0.1mm≤L≤0.5mm.
Embodiment 3 is a kind of tubing anchors that provide according to tubing anchor slips described in the utility model.Fig. 3 is tubing anchor structure and the each parts annexation schematic diagram described in the present embodiment 3.As shown in Figure 3, a kind of tubing anchor, can comprise top connection 1, central tube 2, slips 3, spring 4, slip spider 5, fixed structure 6, centralizer 7, slip ring structure 8, lower contact 9, and wherein, described top connection 1 is set in central tube 2 upper ends; Spring 4 is arranged in the draw-in groove 3013 of slips 3; The base 3011 of slips 3 is connected with slip spider 5; The slips element of construction that slips 3, spring 4, slip spider 5 form is fixed on the upper end of described centralizer 7 by fixed structure 6; On the sheathed central tube of described centralizer 7, in the below of described joint 1; Described slip ring structure 8 is fixedly connected on the lower end of described centralizer 7 by fixed structure 6; Described lower contact 9 is arranged on the lower end of described central tube 2.Wherein, any one tubing anchor slips described in the slips 3 in described tubing anchor provides for the utility model embodiment 1, embodiment 2.
A kind of tubing anchor that the present embodiment 3 provides, the tubing anchor slips that its slips using provides for the utility model, is improving tubing anchor at oil well, especially the stressing conditions of horizontal well slanting section, reduce oil pipe and the damage of self, improved again the job success ratio of tubing anchor releasing grappling.
Claims (8)
1. a tubing anchor slips, comprises agent structure and slip insert, it is characterized in that:
Described agent structure comprises base, slope, draw-in groove; Described base is connected with corresponding slip spider, the relative position for stationary slip on tubing anchor; Described slope combines with the top connection of tubing anchor in the time of the top connection relative motion of slips and tubing anchor; Described draw-in groove is recessed groove, is positioned at described base top;
Described slip insert is zigzag, is positioned at the opposite of described slope; The front angle number of described slip insert equates with rear angle number; The span of the number of degrees D of the anterior angle of described slips tooth and relief angle is: 40 °≤D≤55 °.
2. a kind of tubing anchor slips as claimed in claim 1, is characterized in that, the value of the number of degrees D of the anterior angle of described slip insert and relief angle is 45 degree.
3. a kind of tubing anchor slips as claimed in claim 1, is characterized in that, the span of the cusp width L of described slip insert is: 0.1mm≤L≤0.5mm.
4. a kind of tubing anchor slips as claimed in claim 1, is characterized in that, the value of the cusp width L of described slip insert is 0.15 millimeter.
5. a tubing anchor, comprise top connection (1), central tube (2), slips (3), spring (4), slip spider (5), fixed structure (6), centralizer (7), slip ring structure (8), lower contact (9), wherein, described top connection (1) is set in central tube (2) upper end; Spring (4) is arranged in the draw-in groove of slips (3); The base of slips (3) is connected with slip spider (5); The slips element of construction of slips (3), spring (4), slip spider (5) composition is fixed on the upper end of described centralizer (7) by fixed structure (6); Described centralizer (7) is set on central tube, in the below of described top connection (1); Described slip ring structure (8) is fixedly connected on the lower end of described centralizer (7) by fixed structure (6); Described lower contact (9) is arranged on the lower end of described central tube (2), it is characterized in that, the slips (3) that described tubing anchor uses comprises agent structure and slip insert, wherein:
Described agent structure comprises base, slope, draw-in groove; Described base is connected with corresponding slip spider, the relative position for stationary slip on tubing anchor; Described slope combines with the top connection of tubing anchor in the time of the top connection relative motion of slips and tubing anchor; Described draw-in groove is recessed groove, is positioned at described base top;
Described slip insert is zigzag, is positioned at the opposite of described slope; The front angle number of described slip insert equates with rear angle number; The span of the number of degrees D of the anterior angle of described slips tooth and relief angle is: 40 °≤D≤55 °.
6. a kind of tubing anchor as claimed in claim 5, is characterized in that, in described slips (3), the value of the anterior angle of slip insert and the number of degrees D of relief angle is 45 degree.
7. a kind of tubing anchor as claimed in claim 5, is characterized in that, in described slips (3), the span of the cusp width L of slip insert is: 0.1mm≤L≤0.5mm.
8. a kind of tubing anchor as claimed in claim 5, is characterized in that, in described slips (3), the value of the cusp width L of slip insert is 0.15 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890509.9U CN203729920U (en) | 2013-12-31 | 2013-12-31 | Tubing anchor and slips thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320890509.9U CN203729920U (en) | 2013-12-31 | 2013-12-31 | Tubing anchor and slips thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729920U true CN203729920U (en) | 2014-07-23 |
Family
ID=51200000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320890509.9U Expired - Fee Related CN203729920U (en) | 2013-12-31 | 2013-12-31 | Tubing anchor and slips thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729920U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156032A (en) * | 2015-07-07 | 2015-12-16 | 西南石油大学 | Slip type tool face stabilizer |
| CN109356542A (en) * | 2018-11-15 | 2019-02-19 | 大庆市天德忠石油科技有限公司 | A kind of mechanical slips tubing anchor |
| CN113803556A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Intelligent pipeline plugging device and seal checking method |
-
2013
- 2013-12-31 CN CN201320890509.9U patent/CN203729920U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156032A (en) * | 2015-07-07 | 2015-12-16 | 西南石油大学 | Slip type tool face stabilizer |
| CN105156032B (en) * | 2015-07-07 | 2017-05-31 | 西南石油大学 | A kind of slip-type tool-face stabilizer |
| CN109356542A (en) * | 2018-11-15 | 2019-02-19 | 大庆市天德忠石油科技有限公司 | A kind of mechanical slips tubing anchor |
| CN109356542B (en) * | 2018-11-15 | 2019-07-16 | 大庆市天德忠石油科技有限公司 | A kind of mechanical slips tubing anchor |
| CN113803556A (en) * | 2020-06-11 | 2021-12-17 | 中国石油化工股份有限公司 | Intelligent pipeline plugging device and seal checking method |
| CN113803556B (en) * | 2020-06-11 | 2023-01-10 | 中国石油化工股份有限公司 | Intelligent pipeline plugging device and seal checking method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20211231 |