CN201963247U - Rotary blowout preventer - Google Patents
Rotary blowout preventer Download PDFInfo
- Publication number
- CN201963247U CN201963247U CN2011200841263U CN201120084126U CN201963247U CN 201963247 U CN201963247 U CN 201963247U CN 2011200841263 U CN2011200841263 U CN 2011200841263U CN 201120084126 U CN201120084126 U CN 201120084126U CN 201963247 U CN201963247 U CN 201963247U
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- CN
- China
- Prior art keywords
- blowout preventer
- assembly
- core assembly
- seal assembly
- glue core
- 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 - Fee Related
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Abstract
The utility model discloses a rotary blowout preventer. A casing is provided with a clamp, a rotary assembly is arranged in the casing, an upper rubber seal assembly and a lower rubber seal assembly are arranged inside the rotary assembly, the upper rubber seal assembly and the lower rubber seal assembly are both sealed rubber seals, and a hydraulic control device is connected with the upper rubber seal assembly and the lower rubber seal assembly. The rotary blowout preventer adopts the hydraulic control device, enables the sealed rubber seals to clamp a drill stem and maintain the same falling speed as the drill stem in working condition, avoids the sliding friction between the rubber seals and the drill stem, thereby greatly retarding the pulling damage of the rubber seals, and prolonging the service life of the rubber seals. By adopting the clamp structure, the exchange of rubber seals is time-saving and labor-saving, the drilling cycle is shortened, and the production cost is reduced.
Description
Technical field
The utility model belongs to the oil drilling and extracting equipment technical field, relates to a kind of rotating blowout preventer.
Background technology
Rotating blowout preventer is the necessaries of under balance pressure drilling, geothermal drilling, coal bed gas drilling well.The major function of rotating blowout preventer provides pressure control, realizes rotatory sealing, so that carry out drillng operation as usual under the situation of certain well head pressure.The drilling tool sealing is a rotating blowout preventer most principal work element, and for drilling fluid is shunted from bore hole annulus effectively, the drilling tool sealing must seal up irregular drilling tool securely, as drilling rod, the downhole tool that will pass through, kelly bar etc. in the drilling process.Packing unit is the core component of rotating blowout preventer, and the profile of glue core, material property and processing technology etc. have crucial effect to the functional performance of rotating blowout preventer, directly influence its application life.Present employed rotating blowout preventer is a kind of to be that passive type pressure is controlled, realize sealing by the interference fit between glue core and the tubing string, and there is not pressure compensation, maximum static seal pressure is 35MPa, and maximum movable sealing pressure is 17.5MPa, though this preventer volume is little, in light weight, it is convenient to change the glue core, but the application life of glue core is short, replacing is frequent, has increased drilling period and cost of production; And another kind of active rotating blowout preventer, maximum static pressure power is 35MPa, maximum movable sealing pressure is 21MPa, has a piston to promote the glue core below the glue core of this preventer, makes the glue core tightly embrace drill string, wearing and tearing along with the glue core, make the sealing load of glue core be higher than the borehole pressure certain numerical value all the time, thereby guarantee to seal up the casing pressure in the well, this rotating blowout preventer volume is big, Heavy Weight, install and change the glue core difficulty, waste time and energy, the cost of production height, what be unfavorable for producing carries out smoothly.In addition, because drilling rod is rotation and a duty descending, and the glue core only hugs the drilling rod rotation and does not descend thereupon existing rotating blowout preventer, causes pulling of glue core so extremely easily, makes glue core serious wear, the life-span weak point in the process of work.
Summary of the invention
The purpose of this utility model provides a kind of rotating blowout preventer, has solved that the glue core that exists in the prior art is very easily impaired, application life is short and the problem that wastes time and energy when changing.
The technical scheme that the utility model adopted is, a kind of rotating blowout preventer, be included in housing and be provided with clip, in housing, be provided with the rotation assembly, rotation assembly inside is provided with gluing core assembly and lower glue core assembly, gluing core assembly and lower glue core assembly are packing unit, are connected with hydraulic control device between gluing core assembly and the lower glue core assembly.
The beneficial effects of the utility model are that the employing hydraulic control device makes any packing unit can hug drilling rod in the unlatching duty and descends with speed, has weakened the wearing and tearing of glue core greatly, prolongs its application life; Simultaneously,, be convenient to the replacing of glue core, shortened drilling period, reduced cost of production owing to use the structure of clip.
Description of drawings
Fig. 1 is the assembly structure schematic diagram of the utility model device.
Among the figure, 1. rotate assembly, 2. housing, 3. clip, 4. lower glue core assembly, 5. hydraulic control device, 6. first travel switch, 7. second travel switch, 8. gluing core assembly.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
As shown in Figure 1, the structure of rotating blowout preventer of the present utility model is, be included in housing 2 and be provided with clip 3, in housing 2, be provided with rotation assembly 1, rotation assembly 1 inside is provided with gluing core assembly 8 and lower glue core assembly 4, gluing core assembly 8 and lower glue core assembly 4 are packing unit, be connected with hydraulic control device 5 between gluing core assembly 8 and the lower glue core assembly 4, the up and down extreme position of gluing core assembly 8 is provided with two travel switches, it is first travel switch 6 of lower end, second travel switch 7 of upper end, hydraulic control device 5, first travel switch 6, second travel switch 7 of upper end all is connected with controller, the work of united and coordinating control gluing core assembly 8 and lower glue core assembly 4 and drilling rod.
At the hydraulic control device 5 that designs between glue core assembly gluing core assembly 8, the lower glue core assembly 4 up and down, described hydraulic control device 5 is left and right each one group, can Collaborative Control gluing core assembly 8 and the upper and lower reciprocating motion of lower glue core assembly 4 energy.
The operating principle of the utility model device is, when rotating blowout preventer unlatching work, gluing core assembly 8 at first hugs drilling rod and forms sealing, hydraulic control device 5 control gluing core assemblies 8 descend with speed with drilling rod, after having arrived certain position, touch first travel switch 6, gluing core assembly 8 quits work and unclamps drilling rod, lower glue core assembly 4 is opened, hugging drilling rod descends with speed with drilling rod under hydraulic control device 5 controls, the core assembly of gluing simultaneously 8 begins to rise up to initial position, touch second travel switch 7, lower glue core assembly 4 quits work and unclamps drilling rod, and gluing core assembly 8 is opened, it holds drilling rod tightly with speed decline, and lower glue core assembly 4 begins to rise up to initial position at this moment; Move in circles successively.
The utility model has adopted hydraulic control device, makes packing unit hold drilling rod in working order tightly and its maintenance descends with speed, has avoided the sliding friction between glue core and the drilling rod, has slowed down pulling of glue core so greatly, glue core long service life; Since adopted the yoke configurations setting, time saving and energy saving when changing the glue core, shortened drilling period, saved cost of production.
Claims (3)
1. rotating blowout preventer, it is characterized in that: be included in housing (2) and be provided with clip (3), in housing (2), be provided with rotation assembly (1), rotation assembly (1) inside is provided with gluing core assembly (8) and lower glue core assembly (4), gluing core assembly (8) and lower glue core assembly (4) are packing unit, are connected with hydraulic control device (5) between gluing core assembly (8) and the lower glue core assembly (4).
2. rotating blowout preventer according to claim 1, it is characterized in that: the up and down extreme position of described gluing core assembly (8) is respectively arranged with a travel switch, be first travel switch (6) of lower end, second travel switch (7) of upper end, hydraulic control device (5), first travel switch (6), second travel switch (7) all are connected with controller.
3. rotating blowout preventer according to claim 1 is characterized in that: described hydraulic control device (5) is provided with left and right each one group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200841263U CN201963247U (en) | 2011-03-28 | 2011-03-28 | Rotary blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200841263U CN201963247U (en) | 2011-03-28 | 2011-03-28 | Rotary blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963247U true CN201963247U (en) | 2011-09-07 |
Family
ID=44525782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200841263U Expired - Fee Related CN201963247U (en) | 2011-03-28 | 2011-03-28 | Rotary blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963247U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108845A (en) * | 2011-03-28 | 2011-06-29 | 宝鸡石油机械有限责任公司 | Rotary blowout preventer |
| CN103573206A (en) * | 2013-11-22 | 2014-02-12 | 中国石油天然气集团公司 | Rotary assembly of active sealing type rotary blowout preventer |
| CN116677310A (en) * | 2023-07-06 | 2023-09-01 | 西安宇星石油机械新技术开发有限公司 | Rotary blowout-preventing hydraulic turntable |
-
2011
- 2011-03-28 CN CN2011200841263U patent/CN201963247U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108845A (en) * | 2011-03-28 | 2011-06-29 | 宝鸡石油机械有限责任公司 | Rotary blowout preventer |
| CN102108845B (en) * | 2011-03-28 | 2013-12-04 | 宝鸡石油机械有限责任公司 | Rotary blowout preventer |
| CN103573206A (en) * | 2013-11-22 | 2014-02-12 | 中国石油天然气集团公司 | Rotary assembly of active sealing type rotary blowout preventer |
| CN103573206B (en) * | 2013-11-22 | 2017-01-18 | 中国石油天然气集团公司 | Rotary assembly of active sealing type rotary blowout preventer |
| CN116677310A (en) * | 2023-07-06 | 2023-09-01 | 西安宇星石油机械新技术开发有限公司 | Rotary blowout-preventing hydraulic turntable |
| CN116677310B (en) * | 2023-07-06 | 2024-04-09 | 西安宇星石油机械新技术开发有限公司 | Rotary blowout-preventing hydraulic turntable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20140328 |