CN204754870U - Sliding sleeve formula cementing tool - Google Patents
Sliding sleeve formula cementing tool Download PDFInfo
- Publication number
- CN204754870U CN204754870U CN201520512886.8U CN201520512886U CN204754870U CN 204754870 U CN204754870 U CN 204754870U CN 201520512886 U CN201520512886 U CN 201520512886U CN 204754870 U CN204754870 U CN 204754870U
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- CN
- China
- Prior art keywords
- sliding sleeve
- jump ring
- sleeve
- wall
- jump
- 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
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Abstract
The utility model discloses a sliding sleeve formula cementing tool, it includes that the lower extreme all is formed with casing thread's body and the sliding sleeve that the upper end is formed with the ball seat, the sliding sleeve passes through the shear pin and installs inside the body, sliding sleeve outer wall bottom is formed with a recess that matches with the jump ring, the jump ring is in in the recess of sliding sleeve under of the compressing tightly of body inner wall, body inner chamber bottom is formed with a jump ring groove, the sliding sleeve down the back jump ring can outwards expand to the jump ring inslot with the restriction sliding sleeve go upward, it is equipped with two circulation holes to run through the symmetry on the body outer wall, two circulation hole site in belows of sliding sleeve, two back circulation holes can be by the sliding sleeve shutoff down at the sliding sleeve. The utility model provides an unable automatic grout of when well cementation of conventional sleeve pipe, float collar float shoe seal failure under long -time drilling fluid erosion result in mud to pour in down a chimney into sheathed tube technological problem, realized automatic grout case, cement the well after the no grout purpose of pouring in down a chimney.
Description
Technical field
The utility model relates to casing cementing field of operation, especially a kind of sleeve type cementing tool.
Background technology
In conventional cementing operation, float collar, float shoe are two requisite well cementation parts.Wherein float shoe is except having guiding sleeve reentry well, and it is the same with float collar, and there is ball-and-seat inside, jointly plays a part the complete cement paste that prevents of well cementation and blows back into sleeve pipe.But the ball-and-seat in casing job in float collar, float shoe has the effect of one-way sealing, drilling fluid is not allowed to enter sleeve pipe, in sleeve pipe, pour into drilling fluid after this just requires the sleeve pipe of next determined number, prevent due to inside pipe casing empty cause outside drilling liquid pressure excessive under the sleeve pipe that enters and well cementation annex cause damage.And after casing job terminates, need circulating fluid to clean well, owing to carrying out circulation of drilling fluid for a long time, cause the sealing surface of the ball-and-seat on float collar, float shoe under the erosion of drilling fluid, occur the situation of seal failure.Like this in cementing plug bruising, well cementing operation terminates, and during well head pressure release, occurs that cement paste flows backwards into the phenomenon in sleeve pipe.This phenomenon not only causes there is a large amount of cement in sleeve pipe, needs special lower brill except cement plug, also causes casing cementing operation failure, need remedial cementing, the human and material resources of at substantial, cause and hand over well to delay.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of sleeve type cementing tool, and when it has a setting of casing, automatic grouting, well cementation terminate the advantages such as rear closedown circulation port prevents cement paste from pouring in down a chimney, bearing capacity is strong, can carry out well cementing operation fast and effectively.
In order to solve the problems of the technologies described above, the utility model comprises upper and lower side and is all formed with the sliding sleeve that the body of casing threads and upper end are formed with ball seat, described sliding sleeve is arranged on body interior by shear pin, a groove mated with jump ring is formed bottom described sliding sleeve outer wall, described jump ring is in the groove of sliding sleeve under the compression of inner body wall, a jump-ring slot is formed bottom described chamber body, can expand outwardly in jump-ring slot up to limit sliding sleeve at the descending rear jump ring of sliding sleeve, described body outer wall runs through and is arranged with two circulation ports, two described circulation ports are positioned at the below of sliding sleeve, can by sliding sleeve shutoff at sliding sleeve latter two circulation port descending.
Described sliding sleeve outer wall is also provided with four O type circles, is positioned at above circulation port at two O type circles of the descending upper back of sliding sleeve, two O type circles of bottom are positioned at below circulation port.
The beneficial effects of the utility model are:
(1) do not need during casing job to be in the milk to inside pipe casing, continuous casing job can be realized;
(2) during the clean well that circulates, drilling fluid flows out from circulation port, does not flow through float collar, float shoe, avoids the erosion to float collar, float shoe sealing surface;
(3) well cementation can close circulation port after terminating bruising accurately and rapidly, prevents cementing slurry from pouring in down a chimney.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model sleeve type cementing tool.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
See Fig. 1, sleeve type cementing tool of the present utility model comprises upper and lower side and is all formed with the sliding sleeve 2 that the body 1 of casing threads and upper end are formed with ball seat, casing threads box is arranged at body 1 top, top tubing string can be connected, casing threads pin thread is arranged at bottom, can be connected with well cementation annex, it is inner that described sliding sleeve 2 is arranged on body 1 by shear pin 3, a groove mated with jump ring 5 is formed bottom described sliding sleeve 2 outer wall, described jump ring 5 is in the groove of sliding sleeve 2 under the compression of body 1 inwall, described body 1 intracavity bottom is formed with a jump-ring slot 7, can expand outwardly in jump-ring slot 7 up to limit sliding sleeve 2 at the descending rear jump ring 5 of sliding sleeve 2, described body 1 outer wall runs through and is arranged with two circulation ports 6, two described circulation ports 6 are positioned at the below of sliding sleeve 2, can by sliding sleeve 2 shutoff at sliding sleeve 2 latter two circulation port 6 descending.
Described sliding sleeve 2 outer wall is also provided with four O type circles 4, is positioned at above circulation port 6 at two O type circles of the descending upper back of sliding sleeve 2, two O type circles of bottom are positioned at below circulation port 6.
During site operation, instrument of the present utility model is arranged on float collar, float shoe top, and seals in well with pipe.When entering well, circulation port 6 is in an open position, and in setting of casing process, drilling fluid enters sleeve pipe from circulation port 6, and retaining sleeve inside and outside differential pressure balances, and eliminates grouting procedure, can realize continuous casing job.During the clean well that circulates, drilling fluid flows out from circulation port 6, without float collar, float shoe, solves the difficult problem causing seal failure due to the impact to float collar, the inner ball-and-seat sealing surface of float shoe.During well cementation, cement paste flows out from circulation port, and when dropping into plug bruising, special plug is seated on the ball seat of sliding sleeve 2 inside, continue to suppress, cut off shear pin 3, sliding sleeve 2 is descending, close circulation port 6, the jump ring 5 simultaneously on sliding sleeve 2 opens in jump-ring slot 7, stops sliding sleeve 2 up; Because float collar, float shoe be not by drilling fluid erosion, its reverse favorable sealing property.This series of measures all can effectively stop mud to pour in down a chimney, ensure that well cementing operation quick, effectively construct.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but these embodiments are all included within scope of the present utility model.
Claims (2)
1. a sleeve type cementing tool, it is characterized in that: comprise upper and lower side and be all formed with the sliding sleeve (2) that the body (1) of casing threads and upper end are formed with ball seat, it is inner that described sliding sleeve (2) is arranged on body (1) by shear pin (3), a groove mated with jump ring (5) is formed bottom described sliding sleeve (2) outer wall, described jump ring (5) is in the groove of sliding sleeve (2) under the compression of body (1) inwall, described body (1) intracavity bottom is formed with a jump-ring slot (7), can expand outwardly in jump-ring slot (7) up to limit sliding sleeve (2) at the descending rear jump ring of sliding sleeve (2) (5), described body (1) outer wall runs through and is arranged with two circulation ports (6), two described circulation ports (6) are positioned at the below of sliding sleeve (2), can by sliding sleeve (2) shutoff descending latter two circulation port (6) of sliding sleeve (2).
2. according to sleeve type cementing tool according to claim 1, it is characterized in that: described sliding sleeve (2) outer wall is also provided with four O type circles (4), be positioned at circulation port (6) top at two O type circles of sliding sleeve (2) descending upper back, two O type circles of bottom are positioned at circulation port (6) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512886.8U CN204754870U (en) | 2015-07-15 | 2015-07-15 | Sliding sleeve formula cementing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520512886.8U CN204754870U (en) | 2015-07-15 | 2015-07-15 | Sliding sleeve formula cementing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204754870U true CN204754870U (en) | 2015-11-11 |
Family
ID=54469589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520512886.8U Expired - Fee Related CN204754870U (en) | 2015-07-15 | 2015-07-15 | Sliding sleeve formula cementing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204754870U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894747A (en) * | 2018-06-19 | 2018-11-27 | 中国石油天然气股份有限公司 | Completion tubular column bore seal of cementing the well and fluid power control device for opening |
| CN109072683A (en) * | 2016-03-15 | 2018-12-21 | 美国雄鹰油田产品有限责任公司 | Toe valve |
| CN112211592A (en) * | 2019-07-12 | 2021-01-12 | 中国石油化工股份有限公司 | Switchable well cementation sliding sleeve |
-
2015
- 2015-07-15 CN CN201520512886.8U patent/CN204754870U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109072683A (en) * | 2016-03-15 | 2018-12-21 | 美国雄鹰油田产品有限责任公司 | Toe valve |
| CN108894747A (en) * | 2018-06-19 | 2018-11-27 | 中国石油天然气股份有限公司 | Completion tubular column bore seal of cementing the well and fluid power control device for opening |
| CN112211592A (en) * | 2019-07-12 | 2021-01-12 | 中国石油化工股份有限公司 | Switchable well cementation sliding sleeve |
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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: 20151111 Termination date: 20190715 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |