CN202273633U - Leakage-free suspension device for cased pipe - Google Patents
Leakage-free suspension device for cased pipe Download PDFInfo
- Publication number
- CN202273633U CN202273633U CN2011204185992U CN201120418599U CN202273633U CN 202273633 U CN202273633 U CN 202273633U CN 2011204185992 U CN2011204185992 U CN 2011204185992U CN 201120418599 U CN201120418599 U CN 201120418599U CN 202273633 U CN202273633 U CN 202273633U
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- Prior art keywords
- slips
- sealing
- sleeve pipe
- leakage
- pipe
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Abstract
The utility model discloses a leakage-free suspension device for a cased pipe, which comprises a sealing seat, a sealing ring, a clamp tile and a clamp tile seat which are in shaft connection through the cased pipe. The sealing seat is connected with the clamp tile through a bolt, an inner conical hole is in taper fit with the outer wall of the clamp tile, tooth grooves are evenly distributed on the inner wall of the clamp tile to form a cased pipe suspension slide prevention structure, and an inner hole where the sealing seat is matched with the cased pipe is provided with a sealing structure for embedding the sealing ring. The clamp tile is composed of 4 to 6 equal tile blocks, the split-type clamp tile is axially limited through a limit ring, and bolt locking limit rings matched with radially arranged bolts are evenly distributed in the waist potion of the clamp tile seat. When the leakage-free suspension device is in use, the clamp tile is accurately in place in the inner conical hole of the clamp tile seat, thereby being even in radial stress and free of deformation of the pipe wall of the cased pipe and effect on sealing performance of the sealing structure at the upper end. The leakage-free suspension device for the cased pipe is reliable in suspension, tight in sealing, free of any grease injection operation in use, capable of greatly improving safety performance of products and directly reducing using cost, and suitable for cased pipe suspension devices of various opening diameters.
Description
Technical field
The utility model relates to a kind of petroleum drilling and mining wellhead assembly, and specifically, the utility model relates to a kind of sleeve pipe does not have the leakage suspension arrangement.
Background technology
Setting of casing is one of necessary operation of oil drilling, and the cover tube suspension device is cased special tool, and it should keep suspension reliable during the sleeve pipe suspension, keeps sealing again.Be provided with co-axial seal structure and clamp structure in the commodity cover tube suspension device on the market, hermetically-sealed construction is conventional O type circle hermetically-sealed construction, and clamp structure is that a kind of taper sleeve type slips that utilizes is tightened the clamping grip sleeve.The taper sleeve type slips of prior art is an overall structure, is uniformly distributed with shaft orientation opening groove on the wall, utilizes elastic deformation grip sleeve outer wall when tightening.Existing goods cover tube suspension device clamp structure is simple, and clamping is strong, reliable, guarantees the casing safety that hangs to satisfy the setting of casing technological requirement.But still there is deficiency in the actual existing goods cover tube suspension device that uses, and greatest problem is that the slips tightening structure is unreasonable, is prone to cause sleeve pipe bare terminal end unbalance stress and is out of shape, and casing deformation facilitates hermetically-sealed construction to lose efficacy.From security standpoint, not allowing to overlap the tube suspension device run duration in the engineering has leakage, in case just enforcing remedies property measure rapidly of leakage is arranged, promptly seals to the gap location greasing.Facts have proved, but an amount of greasing respite leakage problem, and excessive greasing causes more large deformation of sleeve pipe on the contrary, thereby further worsens original hermetically-sealed construction.Generally speaking, when the cover tube suspension device took place to leak, greasing can not fundamentally address the leakage concern, and only is a kind of remedial measure.
The utility model content
The utility model is primarily aimed at the deficiency of prior art, propose a kind of simple in structure, suspension is reliable, the tight sleeve pipe of sealing does not have the leakage suspension arrangement.Tightening the element slips in this device is split-type structural, and radial displacement equates under the axial limiting condition, and the sleeve pipe bare terminal end is stressed evenly, does not have stress deformation, so suspended structure does not have negative effect to hermetically-sealed construction.
The utility model is realized technical goal through following technical proposals.
Sleeve pipe does not have the leakage suspension arrangement, and it comprises with the sleeve pipe being seal receptacle, sealing ring, slips and the slip spider that axle connects.Said seal receptacle is the straight-through pipe fitting that is provided with two flanges, is positioned at slip spider internal taper hole and slips outer wall taper fit under the seal receptacle, and the slips inner hole wall that cooperates with sleeve outer wall axially is uniformly distributed with alveolus and constitutes the suspension Skidproof structure.Seal receptacle connects slip spider through bolt, and the relative sleeve pipe axial displacement of slip spider can be adjusted the power of radially tightening of slips.The endoporus that seal receptacle matches with sleeve pipe is provided with the hermetically-sealed construction of embedded sealing ring.Its improvements are: said slips is formed conical sleeve by watt shape piece of 4～6 equalizations and is cooperated with the slip spider internal taper hole, and the slips waist is provided with rectangle concave ring groove setting-in spacing ring, and the radially screw that the slip spider waist is uniformly distributed with is equipped with the screw lock spacing ring.
Sealing ring in the said structure is the O RunddichtringO.
The utility model compared with prior art has following good effect:
1, split type slips constitutes the radial floating structure by being positioned at spacing ring axial limiting of waist; Slips was accurately in place in the slip spider internal taper hole when bolt was regulated; Radial force is even, and the cover tube wall of suspension is indeformable, so do not influence the sealing of upper end hermetically-sealed construction;
2, split type slips is formed by the entire card watt-minute, does not increase manufacture difficulty, and is convenient to install.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is a slips vertical view among Fig. 1, and slips is divided into four among the figure.
Fig. 3 is Fig. 2 axial section sketch map.
The specific embodiment
According to accompanying drawing and combine embodiment, the utility model is described further below.
Sleeve pipe shown in Figure 1 does not have the leakage suspension arrangement, and it comprises that with sleeve pipe 6 be seal receptacle 1, sealing ring 2, slips 4 and the slip spider 5 that axle connects.Said seal receptacle 1 is positioned at slip spider 5 internal taper holes and slips 4 outer wall taper fit under the seal receptacle 1 for being provided with the straight-through pipe fitting of two flanges, and slips 4 inner hole walls that cooperate with sleeve pipe 6 outer walls axially are uniformly distributed with alveolus and constitute the suspension Skidproof structure.Seal receptacle 1 connects slip spider 5 through bolt 3, and slip spider 5 relative sleeve pipe 6 axial displacements can be adjusted the power of radially tightening of slips 4.The endoporus that seal receptacle 1 matches with sleeve pipe 6 is provided with the hermetically-sealed construction of embedded sealing ring 2.Said slips 4 is formed conical sleeve by watt shape piece of 4～6 equalizations and is cooperated with slip spider 5 internal taper holes, and slips 4 waists are provided with rectangle concave ring groove setting-in spacing ring 4.1, the equipped screw 5.1 locking spacing rings 4.1 of the radially screw that slip spider 5 waists are uniformly distributed with.Sleeve pipe 6 nominal diameters of present embodiment suspension are 343.66mm, and sleeve pipe 6 is formed hermetically-sealed construction with seal receptacle 1 inner chamber by O RunddichtringO 2.The slips 4 of adapted is a split-type structural; Little because of supporting sleeve pipe bore, to form by watt shape piece of four equalizations so set slips 4, split type slips 4 constitutes the radial floating structure by being positioned at spacing ring 4.1 axial limitings of waist; Slips 4 was accurately in place in slip spider 5 internal taper holes when bolt 3 was regulated; Radial force is even, and sleeve pipe 6 tube walls of suspension are indeformable, so do not influence the sealing of upper end hermetically-sealed construction.Through above-mentioned improvement, sleeve pipe 6 suspension is reliable, seal tightly, does not want any greasing during use and operates, and promotes the safety of products performance greatly, directly reduces use cost.
Claims (2)
1. a sleeve pipe does not have the leakage suspension arrangement, and it comprises that with sleeve pipe (6) be seal receptacle (1), sealing ring (2), slips (4) and the slip spider (5) that axle connects; Said seal receptacle (1) is for being provided with the straight-through pipe fitting of two flanges; Be positioned at slip spider (5) internal taper hole and slips (4) outer wall taper fit under the seal receptacle (1), slips (4) inner hole wall that cooperates with sleeve pipe (6) outer wall axially is uniformly distributed with alveolus and constitutes the suspension Skidproof structure; Seal receptacle (1) connects slip spider (5) through bolt (3), and relative sleeve pipe (6) axial displacement of slip spider (5) can be adjusted the power of radially tightening of slips (4); The endoporus that seal receptacle (1) matches with sleeve pipe (6) is provided with the hermetically-sealed construction of embedded sealing ring (2); It is characterized in that: said slips (4) is formed conical sleeve by watt shape piece of 4～6 equalizations and is cooperated with slip spider (5) internal taper hole; Slips (4) waist is provided with rectangle concave ring groove setting-in spacing ring (4.1), equipped screw (5.1) locking of the radially screw that slip spider (5) waist is uniformly distributed with spacing ring (4.1).
2. sleeve pipe according to claim 1 does not have the leakage suspension arrangement, it is characterized in that: said sealing ring (2) is the O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204185992U CN202273633U (en) | 2011-10-28 | 2011-10-28 | Leakage-free suspension device for cased pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204185992U CN202273633U (en) | 2011-10-28 | 2011-10-28 | Leakage-free suspension device for cased pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202273633U true CN202273633U (en) | 2012-06-13 |
Family
ID=46193997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204185992U Expired - Lifetime CN202273633U (en) | 2011-10-28 | 2011-10-28 | Leakage-free suspension device for cased pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202273633U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418491A (en) * | 2011-10-28 | 2012-04-18 | 江苏曙光石油钻采设备有限公司 | Leak-free sleeve suspending device |
| CN104989315A (en) * | 2015-05-26 | 2015-10-21 | 美钻能源科技(上海)有限公司 | Center hole sealing and locking apparatus for tubing hanger of underwater horizontal Christmas tree |
| CN105408580A (en) * | 2013-05-30 | 2016-03-16 | 通用电气石油和天然气压力控制有限公司 | Combination fluid pumping sub and hanger lockdown tool |
-
2011
- 2011-10-28 CN CN2011204185992U patent/CN202273633U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418491A (en) * | 2011-10-28 | 2012-04-18 | 江苏曙光石油钻采设备有限公司 | Leak-free sleeve suspending device |
| CN105408580A (en) * | 2013-05-30 | 2016-03-16 | 通用电气石油和天然气压力控制有限公司 | Combination fluid pumping sub and hanger lockdown tool |
| CN105408580B (en) * | 2013-05-30 | 2017-08-29 | 通用电气石油和天然气压力控制有限公司 | Composite fluid pumps joint and hanger locking tool |
| CN104989315A (en) * | 2015-05-26 | 2015-10-21 | 美钻能源科技(上海)有限公司 | Center hole sealing and locking apparatus for tubing hanger of underwater horizontal Christmas tree |
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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: 20120613 |
|
| CX01 | Expiry of patent term |