CN201778751U - Slide bushing type drill-free stage collar - Google Patents
Slide bushing type drill-free stage collar Download PDFInfo
- Publication number
- CN201778751U CN201778751U CN2010202799213U CN201020279921U CN201778751U CN 201778751 U CN201778751 U CN 201778751U CN 2010202799213 U CN2010202799213 U CN 2010202799213U CN 201020279921 U CN201020279921 U CN 201020279921U CN 201778751 U CN201778751 U CN 201778751U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- steel bushing
- boss
- seal groove
- inner sliding
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 239000004568 cement Substances 0.000 claims abstract description 13
- 238000004513 sizing Methods 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 4
- 208000034656 Contusions Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 125000002924 primary amino group Chemical class [H]N([H])* 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to a slide bushing type drill-free stage collar which comprises a steel bushing; one end of the steel bushing is connected with one end of a lower joint by a thread, and the other end of the steel bushing is provided with a boss a; in the steel bushing, a sliding groove a is formed between the end face of the boss a and the end face of the lower joint; an external slide bushing is arranged in the sliding groove a, and the inner wall of the external slide bushing is provided with an internal slide bushing; and in the middle part of the internal slide bushing, the internal slide bushing, the external slide bushing and the steel bushing are connected by pin bolts. The utility model has the advantages of solving the problem of realizing opening and then closing the drill-free stage collar in the existing drill-free stage collar technology, and effectively preventing the occurrence of the phenomenon that the cement paste flows back through gaps after the drill-free stage collar is closed.
Description
Technical field
The utility model belongs to the oil equipment technical field, relates to a kind of sleeve type and exempts to bore sizing collar.
Background technology
At present, in the exploration and development of oil gas well, the well cementation height mud of turning one's coat, improving cementing quality is a kind of trend, wants the height mud of turning one's coat just to need the use sizing collar so.Sizing collar is divided into and can bores sizing collar and exempt to bore sizing collar.Existingly exempt to bore sizing collar and all be difficult to realize and to open and to shut easily, effectively prevent to shut simultaneously the back cement paste and flow backwards by the gap.
Summary of the invention
The purpose of this utility model provides a kind of sleeve type and exempts to bore sizing collar, has solved existingly to exempt to bore being difficult to of existing in the sizing collar technology and realize and can either open and shut easily, effectively prevents to shut the problem that the back cement paste flows backwards by the gap simultaneously.
The technical scheme that the utility model adopted is, a kind of sleeve type exempts to bore sizing collar, comprise steel bushing, steel bushing one end is connected with an end of lower contact by screw thread, and the other end of steel bushing is provided with boss a, in the steel bushing, form sliding tray a between the end face of boss a and the end face of lower contact, be provided with outer sliding sleeve in the sliding tray a, the inwall of outer sliding sleeve is provided with inner sliding sleeve, at the inner sliding sleeve middle part, inner sliding sleeve, outer sliding sleeve and steel bushing are connected by pin.
Wherein the length of outer sliding sleeve be slightly less than boss a end face to the distance between the lower contact end face, outer sliding sleeve is provided with slide block near the pin place.
Wherein the middle part of steel bushing and outer sliding sleeve are provided with secondary water outlet circulating opening near the corresponding position of boss a.
Wherein on the outer wall of outer sliding sleeve, be provided with two seal groove c, be provided with sealing ring c in two seal groove c near the end of boss a.
Wherein pin less than the diameter in outer sliding sleeve and steel bushing, is provided with sealing ring d at the diameter of inner sliding sleeve between pin and the steel bushing.
Wherein the inner sliding sleeve middle part is provided with sliding tray b, and slide block is slided in sliding tray b;
The inwall of inner sliding sleeve is disposed with boss c and boss b from top to bottom;
On the outer wall of inner sliding sleeve, be provided with seal groove a, be provided with sealing ring a in the seal groove a, be provided with seal groove b near lower contact one end place on the outer wall of inner sliding sleeve, be provided with sealing ring b in the seal groove b near an end of cement slurry outlet.
Wherein two seal groove c lay respectively at secondary water outlet circulating opening above and below.
The beneficial effects of the utility model are, setting by inner sliding sleeve and outer sliding sleeve structure, what sizing collar can be beaten in the middle of well cementation opens, on closing afterwards, keep sealing in simultaneously before opening and shut and not opening between outer sliding sleeve and the urceolus mutually, effectively prevent to shut the back cement paste and flow backwards by the gap.
Description of drawings
Fig. 1 is the structural representation that the utility model sleeve type exempts to bore sizing collar.
Among the figure, 1. steel bushing, 2. lower contact, 3. boss a, 4. outer sliding sleeve, 5. inner sliding sleeve, 6. pin, 7. secondary water outlet circulating opening, 8. sliding tray a, 9. slide block, 10. sliding tray b, 11. seal groove a, 12. sealing ring a, 13. seal groove b, 14. sealing ring b, 15. seal groove c, 16. sealing ring c, 17. boss b, 18. boss c, 19. sealing ring d.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Sleeve type of the present utility model exempts to bore sizing collar, comprise steel bushing 1, steel bushing 1 one ends are connected with an end of lower contact 2 by screw thread, the other end of steel bushing 1 is provided with boss a3, in the steel bushing 1, forms sliding tray a8 between the end face of the end face of boss a3 and lower contact 2, be provided with outer sliding sleeve 4 in the sliding tray a8, the inwall of outer sliding sleeve 4 is provided with inner sliding sleeve 5, and at inner sliding sleeve 5 middle parts, inner sliding sleeve 5, outer sliding sleeve 4 and steel bushing 1 are connected by pin 6.
Wherein the length of outer sliding sleeve 4 be slightly less than boss a3 end face to the distance between lower contact 2 end faces, outer sliding sleeve 4 is provided with slide block 9 near pin 6 places.
Wherein the middle part of steel bushing 1 and outer sliding sleeve 4 are provided with secondary water outlet circulating opening 7 near the corresponding position of boss a3.
Wherein on the outer wall of outer sliding sleeve 4, be provided with two seal groove c15 near the end of boss a3, be provided with sealing ring c16 in two seal groove c15, two seal groove c15 lay respectively at secondary water outlet circulating opening 7 above and belows.
Wherein pin 6 less than the diameter in outer sliding sleeve 4 and steel bushing 1, is provided with sealing ring d between pin 6 and the steel bushing 1 at the diameter of inner sliding sleeve 5.
Wherein inner sliding sleeve 5 middle parts are provided with sliding tray b10, and slide block 9 is slided in sliding tray b10;
The inwall of inner sliding sleeve 5 is disposed with boss c18 and boss b17 from top to bottom;
On the outer wall of inner sliding sleeve 5, be provided with seal groove a11, be provided with sealing ring a12 in the seal groove a11, be provided with seal groove b13 near lower contact 2 one end places on the outer wall of inner sliding sleeve 5, be provided with sealing ring b14 in the seal groove b13 near an end of cement slurry outlet 7.
The course of work that the utility model sleeve type exempts to bore sizing collar is, when one-level is cemented the well corresponding cement paste beaten the back and insert the primary amine plug in sizing collar, and one-level plug bottom contacts bruising afterwards with the impacting seat that is positioned at the sizing collar bottom, and seals by sealing ring.Drop into gravity drop hammer afterwards again in sizing collar, gravity drop hammer is stuck on the inner sliding sleeve 5 inner convex platform b17, and the inwall of the outer wall of gravity drop hammer and inner sliding sleeve 5 seals by sealing ring.At this moment suppress again, by hydraulic drive inner sliding sleeve 5 to lower slider, pin 6 is blocked with outer sliding sleeve 4 contact surface places at inner sliding sleeve 5, open secondary water outlet circulating opening 7, in well, inject cement paste by secondary water outlet circulating opening 7, because the setting of outer sliding sleeve 4 top shoes 9, the upper surface of the sliding tray b10 on the inner sliding sleeve 5 is with after slide block 9 contacts, and inner sliding sleeve 5 just can not continue downslide again.Cement paste is inserted the secondary plug after injecting and finishing in sizing collar, the secondary plug is stuck in the boss c18 place in the inner sliding sleeve 5, at this moment with hydraulic pressure pin 6 is blocked, when inner sliding sleeve 5 slides down to the last end in contact of the lower end of outer sliding sleeve 4 and lower contact 2 with outer sliding sleeve 4, stop to slide.This moment, outer sliding sleeve 4 was shut secondary cement paste circulation port 7, and two sealing ring c16 on outer sliding sleeve 4 outer walls lay respectively at secondary water outlet circulating opening 7 above and belows, prevented that cement paste from infiltrating.And then with hydraulic pressure the slide block on the outer sliding sleeve 49 is blocked, inner sliding sleeve 5 separates with outer sliding sleeve 4, and the secondary plug promotes inner sliding sleeve 5, and the gravity drop hammer in the inner sliding sleeve 5, slides to the shaft bottom together.
Sleeve type of the present utility model exempts to bore sizing collar, owing to be provided with sealing ring a12 and sealing ring b14 on inner sliding sleeve 5, is provided with sealing ring c16 on the outer sliding sleeve 4, does not flow backwards so cement paste can not form by the gap.
Claims (7)
1. a sleeve type exempts to bore sizing collar, it is characterized in that, comprise steel bushing (1), steel bushing (1) one end is connected by the end of screw thread with lower contact (2), the other end of steel bushing (1) is provided with boss a(3), in the steel bushing (1), form sliding tray a(8 between the end face of end face boss a(3) and lower contact (2)), sliding tray a(8) is provided with outer sliding sleeve (4) in, the inwall of outer sliding sleeve (4) is provided with inner sliding sleeve (5), at inner sliding sleeve (5) middle part, inner sliding sleeve (5), outer sliding sleeve (4) and steel bushing (1) are connected by pin (6).
2. sizing collar according to claim 1 is characterized in that, the length of described outer sliding sleeve (4) is slightly less than boss a(3) the distance of end face between lower contact (2) end face, outer sliding sleeve (4) locates to be provided with slide block (9) near pin (6).
3. sizing collar according to claim 1 is characterized in that, the middle part of described steel bushing (1) and outer sliding sleeve (4) are near boss a(3) the corresponding position be provided with secondary water outlet circulating opening (7).
4. sizing collar according to claim 1 is characterized in that, on the outer wall of described outer sliding sleeve (4), near boss a(3) an end be provided with two seal groove c(15), two seal groove c(15) in be provided with sealing ring c(16).
5. sizing collar according to claim 1 is characterized in that, described pin (6) less than the diameter in outer sliding sleeve (4) and steel bushing (1), is provided with sealing ring d(19 between pin (6) and the steel bushing (1) at the diameter of inner sliding sleeve (5)).
6. sizing collar according to claim 2 is characterized in that, described inner sliding sleeve (5) middle part is provided with sliding tray b(10), make slide block (9) at sliding tray b(10) in slip;
The inwall of inner sliding sleeve (5) is disposed with boss c(18 from top to bottom) and boss b(17);
On the outer wall of inner sliding sleeve (5), be provided with seal groove a(11) near an end of cement slurry outlet (7), seal groove a(11) is provided with sealing ring a(12 in), be provided with seal groove b(13 near lower contact (2) one end places on the outer wall of inner sliding sleeve (5)), seal groove b(13) in be provided with sealing ring b(14).
7. sizing collar according to claim 4 is characterized in that, described two seal groove c(15) lay respectively at secondary water outlet circulating opening (7) above and below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202799213U CN201778751U (en) | 2010-08-03 | 2010-08-03 | Slide bushing type drill-free stage collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202799213U CN201778751U (en) | 2010-08-03 | 2010-08-03 | Slide bushing type drill-free stage collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778751U true CN201778751U (en) | 2011-03-30 |
Family
ID=43791964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202799213U Expired - Lifetime CN201778751U (en) | 2010-08-03 | 2010-08-03 | Slide bushing type drill-free stage collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775025A (en) * | 2014-03-03 | 2014-05-07 | 青岛海蚨奥工贸有限公司 | Classifying hoop |
| CN107587860A (en) * | 2017-10-31 | 2018-01-16 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of double sliding sleeves based on compression packer set locking mechanism |
-
2010
- 2010-08-03 CN CN2010202799213U patent/CN201778751U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775025A (en) * | 2014-03-03 | 2014-05-07 | 青岛海蚨奥工贸有限公司 | Classifying hoop |
| CN103775025B (en) * | 2014-03-03 | 2017-03-01 | 青岛海蚨奥工贸有限公司 | Sizing collar |
| CN107587860A (en) * | 2017-10-31 | 2018-01-16 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of double sliding sleeves based on compression packer set locking mechanism |
| CN107587860B (en) * | 2017-10-31 | 2019-11-08 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of double sliding sleeves based on compression packer set locking mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |