CN210714561U - Well control blowout preventer for rotary operation in well repair - Google Patents
Well control blowout preventer for rotary operation in well repair Download PDFInfo
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- CN210714561U CN210714561U CN201921018350.5U CN201921018350U CN210714561U CN 210714561 U CN210714561 U CN 210714561U CN 201921018350 U CN201921018350 U CN 201921018350U CN 210714561 U CN210714561 U CN 210714561U
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Abstract
The utility model provides a rotary operation well control blowout preventer for well workover, which comprises a square drill rod, a square bushing, a shell, a self-sealing rubber core, a centering bearing, a lower flange, a high-pressure rotary sealing ring, a bearing and a cooling and lubricating system; the square bushing is connected with the square drill rod, the square bushing is positioned above the shell, the self-sealing rubber core is positioned in the shell, the self-sealing rubber core shell is arranged outside the self-sealing rubber core, a centering bearing and a bearing are arranged between the self-sealing rubber core shell and the shell, and the bearing is positioned below the centering bearing; the upper part of the shell is provided with an inlet, and the lower part of the shell is provided with an outlet; the cooling and lubricating system is connected with the bearing. The cooling and lubricating system is connected with the bearing, so that the annular space of the drill rod and the sleeve can be sealed, the safety risk of well control is avoided, and the environment pollution caused by liquid outflow in the well is avoided.
Description
Technical Field
The utility model relates to a rotatory operation in the aspect of the oil field workover, in particular to workover is with rotatory operation well control blowout preventer.
Background
When carrying out the rotatory operation of carousel, because the particularity of carousel, there is not relevant well control supporting device, can't seal the annular space of drilling rod and sheathed tube when carrying out rotatory operation, there is well control safety risk, and liquid outflow in the well causes environmental pollution. In order to avoid the problems, the well control blowout preventer for rotary operation for well repair is specially designed and manufactured.
Disclosure of Invention
In order to overcome the problem that liquid outflow in current well caused environmental pollution and had well control safety risk, the utility model provides a supply workover with rotatory operation well control blowout preventer, the utility model discloses rational in infrastructure has realized the good sealed effect of oil jacket annular space. The utility model is used for seal the annular space between drilling rod, kelly and the sleeve pipe, can prevent liquid blowout in the well at rotatory operation in-process, avoid the liquid outflow polluted environment.
The utility model adopts the technical proposal that:
the well control blowout preventer for rotary operation in well repair comprises a square drill stem, a square bushing, a shell, a self-sealing rubber core, a centering bearing, a lower flange, a high-pressure rotary sealing ring, a bearing and a cooling and lubricating system; the square bushing is connected with the square drill rod, the square bushing is positioned above the shell, the self-sealing rubber core is positioned in the shell, the self-sealing rubber core shell is arranged outside the self-sealing rubber core, a centering bearing and a bearing are arranged between the self-sealing rubber core shell and the shell, and the bearing is positioned below the centering bearing; the upper part of the shell is provided with an inlet, and the lower part of the shell is provided with an outlet; the cooling and lubricating system is connected with the bearing.
The square bushing is internally provided with a hole matched with the square drill rod, and the lower part of the square bushing is seated on a self-sealing rubber core shell in the shell.
The shell is cylindrical.
The self-sealing rubber core is made of rubber.
The lower flange is a 250 wellhead flange.
And a high-pressure rotary sealing ring is arranged between the self-sealing rubber core shell and the shell.
The high-pressure rotary sealing ring is a plurality of circular rubber rings.
The utility model has the advantages that:
the utility model discloses a during the field usage, install the device on the well head ring flange, it can carry out the practicality to adorn square drill plate and kelly.
The device provided by the utility model realize sealing up drilling rod and sheathed tube annular space, stop well accuse safety risk, avoided liquid outflow in the well to cause environmental pollution.
The following will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a rotary well control blowout preventer for workover;
FIG. 2 is a schematic view of a cooling and lubrication system;
FIG. 3 is a schematic view of a specialized installation tool;
in the figures, the reference numbers are: 1. reinforcing the heart by a square method; 2. a housing; 3. self-sealing rubber core; 301 self-sealing rubber core shell; 4. righting the bearing; 5. a lower flange; 6. a high-pressure rotary seal ring; 7. cooling and lubricating the system; 8. a load bearing; 9. an inlet; 10. an outlet; 11. a kelly bar; 12. a drill pipe joint; 13. a center pole; 14. a drill pipe bushing; 15. an upper joint; 16. lifting the short section; 17. Reducing coupling.
Detailed Description
Example 1:
in order to overcome the problem that liquid outflow in the current well causes environmental pollution and has well control safety risk, the utility model provides a repair well with rotatory operation well control blowout preventer as shown in fig. 1-3, the utility model discloses rational in infrastructure has realized the annular space good sealed effect of oil jacket. The utility model is used for seal the annular space between drilling rod, kelly and the sleeve pipe, can prevent liquid blowout in the well at rotatory operation in-process, avoid the liquid outflow polluted environment.
The well control blowout preventer for rotary operation in well repair comprises a kelly 11, a square bushing 1, a shell 2, a self-sealing rubber core 3, a centralizing bearing 4, a lower flange 5, a high-pressure rotary sealing ring 6, a bearing 8 and a cooling and lubricating system 7; the square bushing 1 is connected with a kelly bar, the square bushing 1 is positioned above the shell 2, the self-sealing rubber core 3 is positioned in the shell 2, a self-sealing rubber core shell 301 is arranged outside the self-sealing rubber core 3, a centering bearing 4 and a bearing 8 are arranged between the self-sealing rubber core shell 301 and the shell 2, and the bearing 8 is positioned below the centering bearing 4; the upper part of the shell 2 is provided with an inlet 9, and the lower part of the shell 2 is provided with an outlet 10; the cooling and lubricating system 7 is connected with a bearing 8.
When the rotary operation well control blowout preventer for well repair is used, the self-sealing rubber core 3 of the drill rod adopts a self-sealing structure, so that the drill rod cannot be directly penetrated by hands, and an auxiliary mounting tool is used. As shown in the figure 3, during installation, the upper connector of the central rod 13 is firstly unscrewed, the central rod 13 penetrates through the drill rod self-sealing rubber core 3, the central rod 13 is then connected with the upper connector 15, the tool penetrating through the rubber sleeve is connected to the kelly 11 in series, the tool string is lifted by the hook, and the kelly 11 is connected with a wellhead drill rod. And after connection, lifting the tool and the drill rod in the well, slowly lowering the tool and the drill rod until the rubber sleeve enters the rotary operation well control blowout preventer for well repair, and then screwing the rubber sleeve into the rotary operation well control blowout preventer for well repair by using a special wrench and fixing the rubber sleeve. And further lifting the whole pipe string until the drill rod joint in the well penetrates out of the rotary operation well control blowout preventer for well repair, then disassembling the tool, and connecting the square drill rod 11 with the drill rod in the well. And finally, clamping the two half square bushing 1 on the square drill stem 11, and sitting in a corresponding groove at the upper part of the rotary operation well control blowout preventer for well repair to complete the installation of the rotary operation well control blowout preventer for well repair. Connect cooling and lubrication system 7 at last, start cooling and lubrication system 7, just can normally realize rotatory operation, the utility model provides a cooling and lubrication system 7 is prior art, the utility model discloses in will not carry out further description.
When the device is used, the self-sealing rubber core 3 is installed in the blowout preventer and fixed by using a special auxiliary installation tool, the self-sealing rubber core shell 301 is driven to rotate by the square bushing 1 during rotation, and the internal sealing element seals the annular space of the drill rod and the sleeve, so that the effect of the device is exerted.
Example 2:
based on the embodiment 1, in the embodiment, the inside of the square bushing 1 is a hole matched with the kelly 11, and the lower part of the square bushing 1 is seated on a rotary shell in the shell 2.
The shell 2 is cylindrical.
The self-sealing rubber core 3 is made of rubber.
The lower flange 5 is a 250 wellhead flange.
And a high-pressure rotary sealing ring 6 is arranged between the self-sealing rubber core shell 301 and the shell 2.
The high-pressure rotary sealing ring 6 is a plurality of circular rubber rings. The circular rubber ring is a temperature-resistant rubber ring.
The utility model discloses in, square bushing 1, inside be with the square hole of 11 complex of kelly bar, with the 11 phase-matches of kelly bar of two kinds of different specifications, square bushing 1 symmetry divide into two, through two bolted connection between two, square bushing 1 lower part is sat on 2 internal rotation casings of blowout preventer casing, and square drill plate drives kelly bar 11 and rotates, and square bushing 11 drives square bushing 1, and square bushing 1 drives the rotation casing and rotates.
The shell 2 is similar to a cylindrical barrel and is used for supporting and fixing all parts inside, and the effects of torque transmission, oil sleeve annulus sealing, rotation and cooling are achieved.
The self-sealing rubber core 3 is made of rubber products and is matched with two types of square drill rods 11 of different models, so that the oil sleeve annulus is sealed during workover rotary operation, and fluid in a well is prevented from flowing out from between the rubber sleeve and the square drill rods; the outside is connected with the rubber sleeve shell, and the upper part fixes the rubber sleeve in the rubber sleeve shell by a cover plate matched with the square bushing 1.
The centralizing bearing 4 is used for centralizing the radial force applied by the kelly 11 to the well control blowout preventer and preventing the kelly 11 from moving in the device.
The lower flange 5 is a 250 wellhead flange matched with the lower flange, and a conversion flange for converting the 250 wellhead flange into a 350 wellhead flange is further designed, and can be connected with the 250 wellhead flange and the 350 wellhead flange, so that the application range of the lower flange is enlarged.
The high-pressure rotary sealing ring 6 is a plurality of circular temperature-resistant rubber rings, so that a channel between the rubber sleeve shell and the shell 2 is sealed in the rotating process, liquid is prevented from flowing outwards from a sealing position, and the liquid of the cooling bearing between the two shells is prevented from being polluted by fluid at the lower part.
As shown in fig. 3, the cooling and lubricating system 7 at least comprises an electric motor, a liquid pump, a cooling tank, a cooling liquid and a circuit inlet pipeline, and is used for cooling and lubricating the device bearings.
The utility model discloses a during the field usage, install the device on the well head ring flange, it can carry out the practicality to adorn square drill plate and kelly. When the rotary operation well control blowout preventer for well repair is used, the drill rod self-sealing rubber core 3 adopts a self-sealing structure and cannot be directly penetrated on a drill rod by hands, an auxiliary mounting tool is used and is connected by adopting a special tool, the special tool at least comprises a reducing coupling 17, a lifting nipple 16, an upper joint 15, a drill rod bushing 14 and a central rod 13, the drill rod bushing 14 is sleeved on the central rod 13, the upper end of the central rod 13 is connected with the upper joint 15, and the upper end of the upper joint 15 is connected with the reducing coupling 17 through the lifting nipple 16; the lower end of the center rod 13 is connected with a kelly bar through a drill rod joint 12. As shown in the figure 3, during installation, the upper connector 15 on the central rod 13 is firstly unscrewed, the central rod 13 penetrates through the drill rod self-sealing rubber core 3, the central rod 13 is then connected with the upper connector 15, the tool penetrating through the rubber sleeve is connected to the kelly 11 in series, the tool string is lifted by the hook, and the kelly 11 is connected with a wellhead drill rod. And after connection, lifting the tool and the drill rod in the well, slowly lowering the tool and the drill rod until the rubber sleeve enters the rotary operation well control blowout preventer for well repair, and then screwing the rubber sleeve into the rotary operation well control blowout preventer for well repair by using a special wrench and fixing the rubber sleeve. And further lifting the whole pipe string until the drill rod joint in the well penetrates out of the rotary operation well control blowout preventer for well repair, then disassembling the tool, and connecting the square drill rod 11 with the drill rod in the well. And finally, clamping the two half square bushing 1 on the square drill stem 11, and sitting in a corresponding groove at the upper part of the rotary operation well control blowout preventer for well repair to complete the installation of the rotary operation well control blowout preventer for well repair. Connect cooling and lubrication system 7 at last, start cooling and lubrication system 7, just can normally realize rotatory operation, the utility model discloses can realize sealing up drilling rod and sheathed tube annular space, stop well accuse safety risk, avoid liquid outflow in the well to cause environmental pollution. When the self-sealing rubber core 3 is used, the self-sealing rubber core 3 is installed in the blowout preventer and fixed by the square bushing 1, and the internal sealing element seals the annular space of a drill rod and a sleeve, so that the effect of the self-sealing rubber core is exerted.
The above illustration is merely an illustration of the present invention, and does not limit the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The structure and system of the apparatus not described in detail in this embodiment are well known and commonly used in the art, and will not be described herein.
Claims (7)
1. Well workover is with rotatory operation well control blowout preventer, its characterized in that: the self-sealing type square drill pipe comprises a square drill pipe (11), a square bushing core (1), a shell (2), a self-sealing rubber core (3), a centering bearing (4), a lower flange (5), a high-pressure rotary sealing ring (6), a bearing (8) and a cooling and lubricating system (7); the square bushing core (1) is connected with a kelly bar, the square bushing core (1) is positioned above the shell (2), the self-sealing rubber core (3) is positioned in the shell (2), a self-sealing rubber core shell (301) is arranged outside the self-sealing rubber core (3), a centering bearing (4) and a bearing (8) are arranged between the self-sealing rubber core shell (301) and the shell (2), and the bearing (8) is positioned below the centering bearing (4); an inlet (9) is arranged at the upper part of the shell (2), and an outlet (10) is arranged at the lower part of the shell (2); the cooling and lubricating system (7) is connected with the bearing (8).
2. The rotary work well control blowout preventer of claim 1, wherein: the square compensation core (1) is internally provided with a hole matched with the square drill stem (11), and the lower part of the square compensation core (1) is seated on a self-sealing rubber core shell (301) in the shell (2).
3. The rotary work well control blowout preventer of claim 1, wherein: the shell (2) is cylindrical.
4. The rotary work well control blowout preventer of claim 1, wherein: the self-sealing rubber core (3) is made of rubber.
5. The rotary work well control blowout preventer of claim 1, wherein: the lower flange (5) is a 250-well flange.
6. The rotary work well control blowout preventer of claim 1, wherein: and a high-pressure rotary sealing ring (6) is arranged between the self-sealing rubber core shell (301) and the shell (2).
7. The rotary work well control blowout preventer of claim 6, wherein: the high-pressure rotary sealing ring (6) is a plurality of circular rubber rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921018350.5U CN210714561U (en) | 2019-07-02 | 2019-07-02 | Well control blowout preventer for rotary operation in well repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921018350.5U CN210714561U (en) | 2019-07-02 | 2019-07-02 | Well control blowout preventer for rotary operation in well repair |
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| Publication Number | Publication Date |
|---|---|
| CN210714561U true CN210714561U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921018350.5U Active CN210714561U (en) | 2019-07-02 | 2019-07-02 | Well control blowout preventer for rotary operation in well repair |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236185A (en) * | 2021-05-24 | 2021-08-10 | 中海油田服务股份有限公司 | High-temperature-resistant heat-insulation blowout preventer |
| CN113236184A (en) * | 2021-05-24 | 2021-08-10 | 中海油田服务股份有限公司 | High-temperature wellhead heat insulation system |
| CN115977537A (en) * | 2023-01-05 | 2023-04-18 | 中海石油(中国)有限公司海南分公司 | Rotary control head lower sleeve assembly and J-shaped groove taking and placing tool |
-
2019
- 2019-07-02 CN CN201921018350.5U patent/CN210714561U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236185A (en) * | 2021-05-24 | 2021-08-10 | 中海油田服务股份有限公司 | High-temperature-resistant heat-insulation blowout preventer |
| CN113236184A (en) * | 2021-05-24 | 2021-08-10 | 中海油田服务股份有限公司 | High-temperature wellhead heat insulation system |
| CN115977537A (en) * | 2023-01-05 | 2023-04-18 | 中海石油(中国)有限公司海南分公司 | Rotary control head lower sleeve assembly and J-shaped groove taking and placing tool |
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