CN201292784Y - Sleeve pipe floatage coupling - Google Patents
Sleeve pipe floatage coupling Download PDFInfo
- Publication number
- CN201292784Y CN201292784Y CNU2008201241039U CN200820124103U CN201292784Y CN 201292784 Y CN201292784 Y CN 201292784Y CN U2008201241039 U CNU2008201241039 U CN U2008201241039U CN 200820124103 U CN200820124103 U CN 200820124103U CN 201292784 Y CN201292784 Y CN 201292784Y
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- CN
- China
- Prior art keywords
- sliding sleeve
- block
- sleeve
- box cupling
- sleeve pipe
- 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
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Abstract
The utility model relates to a sleeve pipe floating coupling in order to overcome the defects that an inner sleeve and an outer sleeve of the prior sleeve pipe floating coupling are respectively connected with a shell by locking pins, when the sleeve pipe floating coupling is blocked, the locking pins are easy to cut by mistake, and when the sleeve pipe floating coupling is drilled again, parts in the sleeve pipe floating coupling are inconvenient for drilling and milling. The middle of an inner hole of the shell is provided with an annular groove, the middle of a sliding sleeve is provided with a radial through slot which is used for installing supporting blocks, the lower part of the inner hole of the shell is provided with an annular slot, the annular slot is downwards provided with an axial through slot, the sliding sleeve is arranged in the shell, radial sealing rings are arranged between the sliding sleeve and the shell, two or more supporting blocks are evenly arranged on the middle circumference of the sliding sleeve and positioned in the annular groove, the lower end of a bushing is fixedly connected with a sliding block, the upper end of the bushing is positioned in the middle of the supporting block, the sliding block is positioned in an inner hole at the lower part of the sliding sleeve, the radial sealing rings are arranged between the sliding block and the sliding sleeve, and the circumference of the sliding block is provided with cutting pins which are positioned in the annular slot of the sliding sleeve. The utility model has the advantages of simple and reasonable structure, convenient assembly, safety and reliability.
Description
Affiliated technical field
The utility model relates to a kind of oil well cementing operation sleeve pipe and is lowered to the instrument casing coupling, especially relates to a kind of casing floating box cupling.
Background technology
Along with the continuous development of drilling technology, extended reach well is used more and more widely, in extended reach well completion casing job, because the frictional resistance between the sleeve pipe and the borehole wall is big, causes sleeve pipe to be lowered to difficulty.At present, for sleeve pipe is lowered into the precalculated position, adopt floating sleeve pipe to be lowered to technology usually.Floating coupling is that floating sleeve pipe is lowered to common tool, utilize the sealing function of floating coupling, in seal section, charge into air or light liquids,, solve the high frictional resistance problem that exists in the high angle hole setting of casing process to alleviate the weight of whole sleeve pipe tubing string in drilling fluid.Disclosed Chinese utility model patent on January 1st, 2003 " casing floating box cupling " (CN2528927Y), interior cover is installed in the housing, interior cover bottom is a blind hole, on the sidewall of housing bottom circulation port is arranged, with the corresponding position of circulation port overcoat is installed, between housing and interior cover seal is installed, interior cover, overcoat are fixedlyed connected with housing respectively by lock pin, and all the other component are and can bore material except that housing.Disclosed Chinese utility model patent on February 9th, 2005 " well cementation casing floating device " (CN2677601Y) is equipped with at the pin place on interior cover top and frees piece, prevents that the blocked portion phenomenon from occurring.Interior cover in the above-mentioned floating coupling is connected with housing with lock pin respectively with overcoat, its complex procedures, because the down-hole situation is complicated and changeable, lock pin is cut off easily by mistake when being hampered, and makes floating coupling can not satisfy the cementing operation technological requirement simultaneously; After the well cementing operation, do not move down in the box cupling between the component on the block ring and connect, be not easy to when spudding in once more the component in the box cupling are bored and mill operation.
The utility model content
For the interior cover that overcomes existing casing floating box cupling existence is connected with housing with lock pin respectively with overcoat, complex procedures, lock pin is cut off easily by mistake when being hampered, make floating coupling can not satisfy the cementing operation technological requirement, and be not easy to when spudding in once more, the component in the box cupling be bored the deficiency of milling, the utility model provides a kind of casing floating box cupling.
The technical scheme that its technical problem that solves the utility model adopts is: the casing floating box cupling comprises housing, sliding sleeve, cuts off, and housing endoporus middle part is an annular groove; There is the radially groove that back-up block is installed at the sliding sleeve middle part, and cannelure is arranged at the bottom, and cannelure has axial pass trough downwards.Sliding sleeve is installed in the housing, between sliding sleeve and the housing radial direction seal ring is installed; The sliding sleeve middle part is evenly distributed in the back-up block more than 2 or 2, and back-up block is positioned at annular groove.Fixedlying connected with slide block in the lower end of mending core, mends the centre that the core upper end is positioned at back-up block; Slide block is arranged in sliding sleeve bottom endoporus, between slide block and the sliding sleeve radial direction seal ring is installed; Be equipped with on the slide block circumference and cut off, cut off the cannelure that is positioned at sliding sleeve.The top and bottom of sliding sleeve are antiturning pitch, and antiturning pitch is a zigzag.
The beneficial effects of the utility model are, and are simple and reasonable, are convenient to assembling, safe and reliable, are difficult for taking place the pin mistake and cut off accident, when being convenient to spud in once more the component in the box cupling bored and mill operation.
Description of drawings
Fig. 1 is the utility model casing floating box cupling structural representation (the C-C view of Fig. 3).
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the B-B sectional view of Fig. 1.
Among the figure: 1. sliding sleeve, 2. housing, 3. back-up block, 4. slide block 5. cuts off, 6. sealing ring, 7. sealing ring is 8. mended core, 9. circulation port, 10. antiturning pitch, 11. annular grooves, 12. cannelures, 13. axial pass troughs.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing 1～accompanying drawing 3 and embodiment.
The utility model casing floating box cupling mainly comprises housing 2, sliding sleeve 1, slide block 4, back-up block 3, mends core 8 etc.The screw thread of the two ends up and down of housing 2 for being connected with sleeve pipe, the endoporus middle part is an annular groove 11.Radial circulation hole 9 is arranged at sliding sleeve 1 top, and there is the radially groove that back-up block 3 is installed at the middle part, and cannelure 12 is arranged at the bottom, and cannelure 12 has axial pass trough 13 downwards.
Fixedlying connected with slide block 4 in the lower end of mending core 8, mends the centre that core 8 upper ends are positioned at back-up block 3, and back-up block 3 is evenly strutted, and back-up block 3 is stuck in the annular groove 11 of housing 2.Slide block 4 is installed in the sliding sleeve 1 bottom endoporus, is matched in clearance between slide block 4 and the sliding sleeve 1, between slide block 4 and the sliding sleeve 1 radial direction seal ring 7 is installed; Be equipped with on slide block 4 circumference and cut off 5, cut off 5 cannelures 12 that are positioned at sliding sleeve 1; Cutting off 5 quantity is 2～4, and along slide block 4 circumference uniform distributions.
Mill operation for the ease of when spudding in once more the component in the floating coupling being bored, the top and bottom of sliding sleeve 1 are designed to antiturning pitch 10, antiturning pitch 10 is generally zigzag.Simultaneously the lower end of the block ring in shaft bottom upper end, bruising plug also is made into identical with antiturning pitch 10 shapes, can with sliding sleeve 1 intermeshing zigzag.
The purpose in design cycle hole 9 is inflow-rate of water turbines of mud when increasing well cementing operation, and the quantity of circulation port 9 is 3 usually, along sliding sleeve 1 circumference uniform distribution, and staggers with the location interval of back-up block 3.
The specific embodiment of the present utility model is that also setting of casing at first is threaded casing floating box cupling upper end, lower end with casing string; When under the sleeve pipe behind the precalculated position, turn on pump, suppress, cut off and cut off, slide block and to mend core descending is mended core this moment and is removed constraint to back-up block, back-up block is removed the constraint to sliding sleeve subsequently, under the effect of pressure, sliding sleeve, back-up block, slide block, benefit core are descending; Carry out well cementing operation, descending component such as sliding sleeve are until being sitting on the block ring; The antiturning pitch engagement of the antiturning pitch of sliding sleeve lower end and anti-rotation block ring upper end, the antiturning pitch engagement of the antiturning pitch of sliding sleeve upper end and bruising plug lower end is until finishing well cementing operation.When spudding in once more, component in the floating coupling are bored mill operation, because it is as a whole that block ring from the bottom to top, sliding sleeve, back-up block, slide block, benefit core, bruising plug etc. connect by antiturning pitch, skidding can not occur when boring plug, increases work efficiency.
Claims (7)
1. a casing floating box cupling comprises housing, sliding sleeve, cuts off, and it is characterized in that: housing (2) endoporus middle part is annular groove (11); There is the radially groove of installation back-up block (3) at sliding sleeve (1) middle part, and cannelure (12) is arranged at the bottom, and cannelure (12) has axial pass trough (13) downwards;
Sliding sleeve (1) is installed in the housing (2), between sliding sleeve (1) and the housing (2) radial direction seal ring (6) is installed; Sliding sleeve (1) middle part is evenly distributed in the back-up block (3) more than 2 or 2, and back-up block (3) is positioned at annular groove (11);
Fixedlying connected with slide block (4) in the lower end of mending core (8), mends the centre that core (8) upper end is positioned at back-up block (3); Slide block (4) is arranged in sliding sleeve (1) bottom endoporus, between slide block (4) and the sliding sleeve (1) radial direction seal ring (7) is installed; Be equipped with on slide block (4) circumference and cut off (5), cut off the cannelure (12) that (5) are positioned at sliding sleeve (1).
2. casing floating box cupling according to claim 1 is characterized in that: the top and bottom of described sliding sleeve (1) are antiturning pitch (10).
3. casing floating box cupling according to claim 2 is characterized in that: described antiturning pitch (10) is a zigzag.
4. casing floating box cupling according to claim 3 is characterized in that: the quantity of described back-up block (3) is 3.
5. casing floating box cupling according to claim 4 is characterized in that: the quantity of described cutting off (5) is 2～4, and along slide block (4) circumference uniform distribution.
6. casing floating box cupling according to claim 1 is characterized in that: radial circulation hole (9) is arranged at described sliding sleeve (1) top.
7. casing floating box cupling according to claim 6 is characterized in that: the quantity of described circulation port (9) is 3, along sliding sleeve (1) circumference uniform distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201241039U CN201292784Y (en) | 2008-11-24 | 2008-11-24 | Sleeve pipe floatage coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201241039U CN201292784Y (en) | 2008-11-24 | 2008-11-24 | Sleeve pipe floatage coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201292784Y true CN201292784Y (en) | 2009-08-19 |
Family
ID=41006259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201241039U Expired - Lifetime CN201292784Y (en) | 2008-11-24 | 2008-11-24 | Sleeve pipe floatage coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201292784Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373888A (en) * | 2010-08-06 | 2012-03-14 | 安东石油技术（集团）有限公司 | Sleeve floating coupling and well cementing method |
| CN116255111A (en) * | 2023-03-29 | 2023-06-13 | 陕西靖瑞能源科技股份有限公司 | Resin well cementation plugging device and construction method |
-
2008
- 2008-11-24 CN CNU2008201241039U patent/CN201292784Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373888A (en) * | 2010-08-06 | 2012-03-14 | 安东石油技术（集团）有限公司 | Sleeve floating coupling and well cementing method |
| CN116255111A (en) * | 2023-03-29 | 2023-06-13 | 陕西靖瑞能源科技股份有限公司 | Resin well cementation plugging device and construction method |
| CN116255111B (en) * | 2023-03-29 | 2023-11-14 | 陕西靖瑞能源科技股份有限公司 | Resin well cementation plugging device and construction method |
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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 |
Granted publication date: 20090819 |
|
| CX01 | Expiry of patent term |