CN102747978A - Wellhead centering device - Google Patents
Wellhead centering device Download PDFInfo
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- CN102747978A CN102747978A CN2012102415734A CN201210241573A CN102747978A CN 102747978 A CN102747978 A CN 102747978A CN 2012102415734 A CN2012102415734 A CN 2012102415734A CN 201210241573 A CN201210241573 A CN 201210241573A CN 102747978 A CN102747978 A CN 102747978A
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- sphere
- sphere body
- upper sphere
- flange
- well head
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Abstract
The invention relates to a wellhead centering device. The device comprises an upper flange, an upper sphere body, an outer sleeve, a lower sphere body and a lower flange, wherein the upper sphere body and the lower sphere body are hollow; the outer diameter of the upper sphere body is matched with the inner diameter of a central cavity of the lower sphere body; the upper sphere body and the upper flange are integrally designed; the lower sphere body and the lower flange are integrally designed; the lower end of the upper sphere body is arranged in the cavity in the middle of the lower sphere body; and the outer side of the combined part of the upper sphere body and the lower sphere body is sleeved with the outer sleeve and is sealed. The wellhead centering device disclosed by the invention is used for connecting a wellhead with a rotary anti-spraying device; and by virtue of the coordination of the upper sphere body and the lower sphere body, the centering device swings along with the rotary anti-spraying device during rotation operation of well repairing or well drilling, so that an acting force borne by the rotary anti-spraying device is reduced, inner accessories of the rotary anti-spraying device are not abnormally abraded even if the rotary anti-spraying device is not centered, and meanwhile, the wellhead is prevented from being subjected to overflow or leakage. The device has a simple structure and is easily popularized and applied in a large scale on an oil field.
Description
Technical field
What the present invention relates to is drilling machinery equipment, particularly a kind of well head aligning device.
Background technology
At present, in oil field well workover or wellbore construction process, in order to carry out well control work, well head need install blowout hookup additional, particularly when rotary operation, must install rotating blowout preventer additional.But owing to receive well head, rig floor; The angle of combination hook-block is is very easily worn and torn glue core and pressure-loaded bearing in the rotating blowout preventer, causes 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, the wellhead assembly of adjustment concentricity during rotary operation.
Summary of the invention
The purpose of this invention is to provide a kind of well head aligning device, solve present well head, cause the rotating blowout preventer serious wear, cause the problem of well head overflow or leakage owing to there is not aligning device.
The present invention realizes through following technical scheme: well head aligning device, and 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, and upper sphere and upper flange design for one, and lower sphere and lower flange design for one; And following the sitting up straight of upper sphere is contained in the middle cavity of lower sphere, and the part outside that upper sphere and lower sphere combine is set with overcoat and sealing.
Described upper sphere external circumferential is provided with groove, and the inboard corresponding position of groove with 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 a spindle.
Described limited block is 6.
The part that described upper sphere and lower sphere combine is equipped with sealing ring.
Adopt the good effect of technique scheme: the present invention is used to connect well head and rotating blowout preventer; Be used through upper sphere and lower sphere; When well workover or drilling well rotary operation, the aligning device is swung with rotating blowout preventer, reduces the active force that rotating blowout preventer bore; Even make that 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 last lower sphere has been limited hyperkinesia when preventing to rotate; This apparatus structure is simple, is easy on the oil field, apply on a large scale.
Description of drawings
Fig. 1 is a longitudinal section of the present invention;
Fig. 2 is the vertical 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 present invention is done further explanation:
Fig. 1 is longitudinal section of the present invention, and is as shown in the figure, well head aligning device; This device comprises upper flange 1, upper sphere 2, overcoat 3, lower sphere 4 and lower flange 5, and upper flange 1 is used for being connected with rotating blowout preventer, and lower flange 5 is used for being connected with well head; Wherein, upper sphere 2 is hollow with lower sphere 4, and 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 for one designs, and lower sphere 4 and lower flange 5 are for one designs, and the following of upper sphere 2 sat up straight in the cavity that is contained in lower sphere 4 centres; Like this; The cavity of upper flange 1, upper sphere 2, lower sphere 4 and lower flange 5 central authorities formed oily passage, and upper sphere 2 and lower sphere 4 are owing to being circular all, therefore; Following 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 take place, and cooperates the rotation of rotating blowout preventer.Upper sphere 2 is set with overcoat 3 and sealing with the part outside that lower sphere 4 combines, and prevents the well head overflow.
Fig. 2 is the vertical view of upper sphere and lower sphere binding site among Fig. 1, and is as shown in the figure, excessive in order to prevent that this device from cooperating rotating blowout preventer to rotate the scope of hour offset, need the motion of upper sphere 2 and lower sphere 4 be limited.Be provided with groove in upper sphere 2 external circumferential, the inboard corresponding positions of groove with 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, make the skew of upper sphere 2 receive certain limitation.Because the lower end of upper sphere 2 is a circular arc; When skew takes place in upper sphere 2; In order to make limited block 6 can comply with the circular arc of upper sphere 2 lower ends, 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 limit movement of upper sphere 2, lost the useful effect of aligning; When limited block 6 numbers very little the time, do not have corresponding position-limiting action again.Therefore, take all factors into consideration above factor, in the present invention, limited block 6 is set to 6, can satisfy the demand.
In order further to strengthen sealing effectiveness, prevent to take place when upper sphere 2 and lower sphere 4 are subjected to displacement each other oil stream seepage, in upper sphere 2 and the part that lower sphere 4 combines 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 the rotation generation certain skew of lower sphere 4 along with rotating blowout preventer prevent the damage of rotating blowout preventer internals.
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, and 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) design for one; Lower sphere (4) and lower flange (5) be for one designs, and upper sphere (2) following sit up straight in the cavity that is contained in the middle of the lower sphere (4), and the part outside that upper sphere (2) and lower sphere (4) combine is set with overcoat (3) and seals.
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 corresponding position of groove with 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 a spindle.
4. well head aligning device according to claim 2 is characterized in that: described limited block (6) is 6.
5. well head aligning device according to claim 1 is characterized in that: the part that described upper sphere (2) and lower sphere (4) combine is equipped with sealing ring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102415734A CN102747978A (en) | 2012-07-13 | 2012-07-13 | Wellhead centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102415734A CN102747978A (en) | 2012-07-13 | 2012-07-13 | Wellhead centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102747978A true CN102747978A (en) | 2012-10-24 |
Family
ID=47028433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102415734A Pending CN102747978A (en) | 2012-07-13 | 2012-07-13 | Wellhead centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102747978A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3433504A (en) * | 1966-07-05 | 1969-03-18 | Ventura Tool Co | Flexible connectors |
| EP0397874A1 (en) * | 1988-11-22 | 1990-11-22 | Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti | Device for closing off a complication zone in a well |
| CN101182760A (en) * | 2007-10-29 | 2008-05-21 | 金湖卫东机械有限公司 | Under balance drilling revolution control device |
| CN101608537A (en) * | 2009-06-26 | 2009-12-23 | 大庆油田有限责任公司 | Multifunctional oil-extractor polish-rod double-aligning anti-theft mobile packing box |
| CN201747314U (en) * | 2010-09-09 | 2011-02-16 | 李红宾 | Energy-saving oil production wellhead device |
| CN202659202U (en) * | 2012-07-13 | 2013-01-09 | 大庆井泰石油工程技术股份有限公司 | Wellhead nucleus-aligning device |
-
2012
- 2012-07-13 CN CN2012102415734A patent/CN102747978A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3433504A (en) * | 1966-07-05 | 1969-03-18 | Ventura Tool Co | Flexible connectors |
| EP0397874A1 (en) * | 1988-11-22 | 1990-11-22 | Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti | Device for closing off a complication zone in a well |
| CN101182760A (en) * | 2007-10-29 | 2008-05-21 | 金湖卫东机械有限公司 | Under balance drilling revolution control device |
| CN101608537A (en) * | 2009-06-26 | 2009-12-23 | 大庆油田有限责任公司 | Multifunctional oil-extractor polish-rod double-aligning anti-theft mobile packing box |
| CN201747314U (en) * | 2010-09-09 | 2011-02-16 | 李红宾 | Energy-saving oil production wellhead device |
| CN202659202U (en) * | 2012-07-13 | 2013-01-09 | 大庆井泰石油工程技术股份有限公司 | Wellhead nucleus-aligning device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121024 |