CN201024969Y - Rotary ejection preventer for under balance drilling well - Google Patents
Rotary ejection preventer for under balance drilling well Download PDFInfo
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- CN201024969Y CN201024969Y CNU200720153972XU CN200720153972U CN201024969Y CN 201024969 Y CN201024969 Y CN 201024969Y CN U200720153972X U CNU200720153972X U CN U200720153972XU CN 200720153972 U CN200720153972 U CN 200720153972U CN 201024969 Y CN201024969 Y CN 201024969Y
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Abstract
The utility model relates to a rotary blowout preventer used for balancing the digging of the well, mainly solving the disadvantages of the prior rotary blowout preventers that the production of the prior rotary blowout preventers is difficult and the eccentricity is easy to happen. The utility model is characterized in: an upper shell and a lower shell(1, 2) are respectively provided with an upper rotary body and a lower rotary body(3, 4), with the lower rotary body(4) provided with a hole(5) which is internally provided with a piston assembly(6). The lower part of the upper rotary body(3) is inserted into and sealed with the middle hole of the lower rotary body(4), and the upper part of the lower rotary body is connected with the upper rotary body(3) through a positioning pin(7). The upper part of the upper rotary body(3) is orderly connected with a clamping sleeve assembly(4) and a drive sleeve(9). An upper steering shaft(10) is arranged between the upper rotary body(3) and the upper shell(1) and a lower steering shaft(11) is arranged between the lower rotary body(4) and the lower shell(2). The rotary blowout preventer is easy to be produced and convenient to be disassembled and the eccentricity is not to happen during the operation.
Description
Technical field:
The utility model relates to preventer used in the oil drilling machine field, belongs to the under balance pressure drilling rotating blowout preventer.
Background technology:
In Process of Oil Well Drilling, when drilling well fluid column fluid pressure during less than formation fluid pressure, formation fluid will enter well, cause well kick, and this just need utilize preventer to prevent the generation of " blowout " phenomenon.According to the function difference, preventer can be divided into ram preventer, omnipotent preventer and rotating blowout preventer, Chinese patent 03207139.6 discloses a kind of rotating blowout preventer, cover is integral structure in the rotation in this preventer, the centre has the hole, the fluid power piston that connects the promotion slips is installed in this hole, is adding required precision in man-hour height, processing difficulties; Eccentric wear easily takes place and makes the black box damage in when rotation cover in rotation in addition, and what be unfavorable for producing carries out smoothly.
The utility model content:
In order to overcome existing rotating blowout preventer processing difficulties and the deficiency of eccentric wear easily to take place, the utility model provides a kind of under balance pressure drilling rotating blowout preventer, and this preventer has the advantages that to be easy to process, eccentric wear does not take place when easy installation and removal, work.
The technical solution of the utility model is: this under balance pressure drilling comprises lower house with rotating blowout preventer, rotary body up and down is housed respectively in the last lower house, have the hole on the following rotary body, piston assembly is housed in the hole, the lower end of last rotary body insert in the interstitial hole of rotary body down and with its sealing, following rotary body upper end links to each other with last rotary body by alignment pin, and last rotary body upper end connects chucking cover assembly and actuating sleeve successively; Between last rotary body and the upper shell alignment bearing is housed, between following rotary body and the lower house alignment bearing is housed down.
The utlity model has following beneficial effect: owing to take such scheme, cover in the rotation in original preventer is divided into rotary body up and down, is easy to guarantee precision man-hour adding, be easy to processing, easy installation and removal.Because alignment bearing is being housed between last rotary body and the upper shell, between following rotary body and the lower house alignment bearing is housed down, the frictional force that when rotary body rotates up and down, reduces to rotate, the eccentric wear phenomenon does not take place during work, and making up and down by the support of the bearing group of precision-fit and centralizing function, rotary body has good working order.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present utility model.
1-upper shell among the figure, 2-lower house, the last rotary body of 3-, rotary body under the 4-, 5-hole, 6-piston assembly, 7-alignment pin, 8-chucking cover assembly, 9-actuating sleeve, the last alignment bearing of 10-, alignment bearing under the 11-.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this under balance pressure drilling comprises lower house (1 with rotating blowout preventer, 2), rotary body (3 up and down is housed respectively in the last lower house (1,2), 4), have hole 5 on the following rotary body 4, piston assembly 6 be housed in hole 5, the lower end of last rotary body 3 insert in the interstitial hole of rotary body 4 down and with its sealing, following rotary body 4 upper ends link to each other with last rotary body 3 by alignment pin 7, and alignment pin 7 has played the effect of location and transfer torque.Last rotary body 3 upper ends connect chucking cover assembly 8 and actuating sleeve 9 successively; Between last rotary body 3 and the upper shell 1 alignment bearing 10 is housed, between following rotary body 4 and the lower house 2 alignment bearing 11 is housed down.
The utility model is optimal design and the improvement to Chinese patent 03207139.6 " a kind of rotating blowout preventer ", and cover in the rotation wherein is divided into up and down rotary body (3,4), is easy to guarantee precision man-hour adding, and is easy to processing, easy installation and removal.Owing between last rotary body 3 and upper shell 1, alignment bearing 10 is housed, between following rotary body 4 and the lower house 2 alignment bearing 11 is housed down, when rotary body (3 up and down, reduced the frictional force of rotation when 4) rotating, the eccentric wear phenomenon does not take place during work, making up and down by the support of the bearing group of precision-fit and centralizing function, rotary body (3,4) has good working order.
Claims (1)
1. under balance pressure drilling rotating blowout preventer, comprise lower house (1,2), it is characterized in that: go up lower house (1, rotary body (3 up and down is housed respectively 2), 4), have hole (5) on the following rotary body (4), piston assembly (6) is housed in hole (5), the lower end of last rotary body (3) insert in the interstitial hole of rotary body (4) down and with its sealing, following rotary body (4) upper end links to each other with last rotary body (3) by alignment pin (7), and last rotary body (3) upper end connects chucking cover assembly (8) and actuating sleeve (9) successively; Between last rotary body (3) and the upper shell (1) alignment bearing (10) is housed, between following rotary body (4) and the lower house (2) alignment bearing (11) is housed down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720153972XU CN201024969Y (en) | 2007-05-22 | 2007-05-22 | Rotary ejection preventer for under balance drilling well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720153972XU CN201024969Y (en) | 2007-05-22 | 2007-05-22 | Rotary ejection preventer for under balance drilling well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201024969Y true CN201024969Y (en) | 2008-02-20 |
Family
ID=39098826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720153972XU Expired - Fee Related CN201024969Y (en) | 2007-05-22 | 2007-05-22 | Rotary ejection preventer for under balance drilling well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201024969Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761320B (en) * | 2009-12-26 | 2012-09-26 | 杨颖辉 | Rotary ring-shaped blowout preventer |
| CN103015886A (en) * | 2012-12-29 | 2013-04-03 | 西南石油大学 | Top drive driver of rotating control head |
| CN113775312A (en) * | 2021-10-27 | 2021-12-10 | 四川艾文思创能源科技有限公司 | Rotary load-bearing flashboard |
-
2007
- 2007-05-22 CN CNU200720153972XU patent/CN201024969Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761320B (en) * | 2009-12-26 | 2012-09-26 | 杨颖辉 | Rotary ring-shaped blowout preventer |
| CN103015886A (en) * | 2012-12-29 | 2013-04-03 | 西南石油大学 | Top drive driver of rotating control head |
| CN103015886B (en) * | 2012-12-29 | 2014-09-10 | 西南石油大学 | Top drive driver of rotating control head |
| CN113775312A (en) * | 2021-10-27 | 2021-12-10 | 四川艾文思创能源科技有限公司 | Rotary load-bearing flashboard |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20160522 |