CN202659202U - Wellhead nucleus-aligning device - Google Patents
Wellhead nucleus-aligning device Download PDFInfo
- Publication number
- CN202659202U CN202659202U CN 201220338282 CN201220338282U CN202659202U CN 202659202 U CN202659202 U CN 202659202U CN 201220338282 CN201220338282 CN 201220338282 CN 201220338282 U CN201220338282 U CN 201220338282U CN 202659202 U CN202659202 U CN 202659202U
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- sphere
- aligning device
- wellhead
- nucleus
- upper sphere
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Abstract
The utility model relates to a wellhead nucleus-aligning device. The wellhead nucleus-aligning of device comprises an upper flange, an upper sphere, a coat, a lower sphere and a lower flange, wherein the upper sphere and the lower sphere are both hollow. The external diameter of the upper sphere fits the internal diameter of a centre cavity of the lower sphere. The upper flange and the upper sphere are designed in an integral mode. The lower sphere and the lower flange are designed in an integral mode. The lower end of the upper sphere is arranged inside the centre cavity of the lower sphere in a sitting mode. The coat is sleeved outside the conjunct part of the upper sphere and the lower sphere in a sealing mode. The wellhead nucleus-aligning device is used for connecting a wellhead and a rotatable blowout preventer. Through the cooperated usage of the upper sphere and the lower sphere, in the operations of well repairing and well drilling and rotating, the nucleus-aligning device swings with the rotatable blowout preventer to reduce the force born by the rotatable blowout preventer. Accordingly, though the wellhead nucleus-aligning device is in a state of decentraction, abnormal wear of inner parts of the rotatable blowout preventer is avoided. The wellhead nucleus-aligning device is simple in structure and easy to popularize and apply in an oil field on a large scale.
Description
Technical field
The utility model relates to drilling machinery equipment, particularly a kind of well head aligning device.
Background technology
At present, in oil well or wellbore construction process, in order to carry out well control work, well head need to install blowout hookup additional, particularly must install rotating blowout preventer additional when rotary operation.But owing to being subjected to well head, rig floor, the angle impact of combination hook-block, glue core and pressure-loaded bearing in the rotating blowout preventer are are very easily worn and torn, cause well head overflow or leakage, the general well head mode of increasing that adopts of solution in the past, improving the pliability of the following link of rotating blowout preventer, but this method is from falling flat, and the abrasive effect of rotating blowout preventer is still very serious.Therefore, the needs invention is a kind of can to cooperate rotating blowout preventer, adjusts the wellhead assembly of concentricity during rotary operation.
Summary of the invention
The purpose of this utility model provides a kind of well head aligning device, solves present well head owing to there not being aligning device, causes the rotating blowout preventer serious wear, causes the problem of well head overflow or leakage.
The utility model is achieved through the following technical solutions: the well head aligning device, this device comprises upper flange, upper sphere, overcoat, lower sphere and lower flange, wherein, upper sphere and lower sphere are hollow, the interior diameter of the external diameter of upper sphere and lower sphere central cavity matches, upper sphere and upper flange are integrated design, lower sphere and lower flange are integrated design, and lower the sitting up straight of upper sphere is contained in the middle cavity of lower sphere, and the part outside of upper sphere and lower sphere combination is set with overcoat and sealing.
Described upper sphere external circumferential is provided with groove, and the inboard position corresponding with the groove of upper sphere of lower sphere is provided with groove, and the cavity that forms between two grooves is built-in with a plurality of limited blocks, and limited block is circumferentially evenly arranged along cavity.
Described limited block is spindle.
Described limited block is 6.
The part of described upper sphere and lower sphere combination is equipped with sealing ring.
Adopt the good effect of technique scheme: the utility model is used for connecting well head and rotating blowout preventer, be used in conjunction with by upper sphere and lower sphere, when well workover or drilling rotary operation, aligning device swings with rotating blowout preventer, reduce the active force that rotating blowout preventer bears, so that even decentraction can not cause heel and toe wear to the interior fittings of rotating blowout preventer yet, also prevent well head overflow or leakage simultaneously; In addition, installed stopping means additional, the aligning scope of upper lower sphere has been limited hyperkinesia when preventing from rotating; This apparatus structure is simple, is easy to apply on a large scale in the oil field.
Description of drawings
Fig. 1 is longitudinal section of the present utility model;
Fig. 2 is the top view of upper sphere and lower sphere binding site among Fig. 1.
Among the figure, 1 upper flange, 2 upper spheres, 3 overcoats, 4 lower spheres, 5 lower flanges, 6 limited blocks, 7 sealing rings.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is longitudinal section of the present utility model, as shown in the figure, the well head aligning device, this device comprises upper flange 1, upper sphere 2, overcoat 3, lower sphere 4 and lower flange 5, upper flange 1 is used for being connected with rotating blowout preventer, lower flange 5 is used for being connected with well head, wherein, upper sphere 2 and lower sphere 4 are hollow, the interior diameter of the external diameter of upper sphere 2 and lower sphere 4 central cavity matches, upper sphere 2 and upper flange 1 are integrated design, lower sphere 4 and lower flange 5 are integrated design, and the lower of upper sphere 2 sat up straight in the cavity that is contained in lower sphere 4 centres, like this, and upper flange 1, upper sphere 2, the cavity of lower sphere 4 and lower flange 5 central authorities formed oily passage, upper sphere 2 and lower sphere 4 are owing to being circular all, therefore, lower the sitting up straight in the cavity that is contained in lower sphere 4 centres of upper sphere 2 causes upper sphere 2 that certain skew can occur, and cooperates the rotation of rotating blowout preventer.The part outside of upper sphere 2 and lower sphere 4 combinations is set with overcoat 3 and sealing, prevents the well head overflow.
Fig. 2 is the top view of upper sphere and lower sphere binding site among Fig. 1, and is excessive in order to prevent that this device from cooperating rotating blowout preventer to rotate the scope of hour offset as shown in the figure, need to the motion of upper sphere 2 and lower sphere 4 be limited.Be provided with groove in upper sphere 2 external circumferential, the inboard positions corresponding with the groove of upper sphere 2 of lower sphere 4 are provided with groove, and the cavity that forms between two grooves is built-in with a plurality of limited blocks 6, and limited block 6 is circumferentially evenly arranged along cavity.Under the effect of limited block 6, so that the skew of upper sphere 2 is subject to certain limitation.Because the lower end of upper sphere 2 is circular arc, when skew occurs in upper sphere 2, can comply with the circular arc of upper sphere 2 lower ends in order to make limited block 6, be convenient to the run-off the straight skew, limited block 6 is designed to spindle, be that centre pointed at both ends is thick, the peak that the corresponding upper sphere 2 lower end circular arcs in the position, two of limited block 6 rise.Because limited block 6 is circumferentially evenly arranged along cavity, can the skew of upper sphere 2 all directions be limited.When limited block 6 numbers are too many, excessive to the movement limit of upper sphere 2, lost the useful effect of aligning; When limited block 6 numbers very little the time, do not have again corresponding position-limiting action.Therefore, consider above factor, in the utility model, limited block 6 is set to 6, can satisfy the demand.
In order further to strengthen sealing effectiveness, oil stream seepage occurs when preventing that upper sphere 2 and lower sphere 4 are subjected to displacement mutually, in the part of upper sphere 2 and lower sphere 4 combinations sealing ring 7 is housed, the sealing effectiveness of overcoat 3 is done further replenished.
During use, upper flange 1 is connected with rotating blowout preventer, lower flange 5 is connected with well head, and in the rotary course of rotating blowout preventer, upper sphere 2 and lower sphere 4 prevent the damage of rotating blowout preventer internals along with certain skew occurs in the rotation of rotating blowout preventer.
Claims (5)
1. well head aligning device, it is characterized in that: this device comprises upper flange (1), upper sphere (2), overcoat (3), lower sphere (4) and lower flange (5), wherein, upper sphere (2) and lower sphere (4) are hollow, the interior diameter of the external diameter of upper sphere (2) and lower sphere (4) central cavity matches, upper sphere (2) and upper flange (1) are integrated design, lower sphere (4) and lower flange (5) are integrated design, and lower the sitting up straight of upper sphere (2) is contained in the middle cavity of lower sphere (4), and the part outside of upper sphere (2) and lower sphere (4) combination is set with overcoat (3) and sealing.
2. well head aligning device according to claim 1, it is characterized in that: described upper sphere (2) external circumferential is provided with groove, the inboard position corresponding with the groove of upper sphere (2) of lower sphere (4) is provided with groove, the cavity that forms between two grooves is built-in with a plurality of limited blocks (6), and limited block (6) is circumferentially evenly arranged along cavity.
3. well head aligning device according to claim 2 is characterized in that: described limited block (6) is spindle.
4. well head aligning device according to claim 2, it is characterized in that: described limited block (6) is 6.
5. well head aligning device according to claim 1, it is characterized in that: the part of described upper sphere (2) and lower sphere (4) combination is equipped with sealing ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338282 CN202659202U (en) | 2012-07-13 | 2012-07-13 | Wellhead nucleus-aligning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338282 CN202659202U (en) | 2012-07-13 | 2012-07-13 | Wellhead nucleus-aligning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659202U true CN202659202U (en) | 2013-01-09 |
Family
ID=47454112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220338282 Expired - Lifetime CN202659202U (en) | 2012-07-13 | 2012-07-13 | Wellhead nucleus-aligning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747978A (en) * | 2012-07-13 | 2012-10-24 | 大庆井泰石油工程技术股份有限公司 | Wellhead centering device |
-
2012
- 2012-07-13 CN CN 201220338282 patent/CN202659202U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747978A (en) * | 2012-07-13 | 2012-10-24 | 大庆井泰石油工程技术股份有限公司 | Wellhead centering device |
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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: 20130109 |
|
| CX01 | Expiry of patent term |