CN210068059U - Shear flashboard with sealing function - Google Patents
Shear flashboard with sealing function Download PDFInfo
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- CN210068059U CN210068059U CN201920610468.0U CN201920610468U CN210068059U CN 210068059 U CN210068059 U CN 210068059U CN 201920610468 U CN201920610468 U CN 201920610468U CN 210068059 U CN210068059 U CN 210068059U
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- shearing
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- sealing
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Abstract
The utility model relates to a shear gate plate with sealing function, which comprises an upper shear gate plate component and a lower shear gate plate component which are matched with each other; the upper shearing flashboard component comprises an upper shearing flashboard body and an upper shearing rubber core assembly, wherein the tail end of the upper shearing flashboard assembly is embedded in and fixed in the upper shearing flashboard body; the lower shear flashboard component comprises a lower shear flashboard body and a lower shear rubber core assembly, wherein the tail end of the lower shear flashboard assembly is embedded in and fixed in the lower shear flashboard body; the upper shearing rubber core assembly comprises an upper shearing knife and a first sealing rubber core arranged at the bottom of the tail end of the upper shearing knife; the lower shearing rubber core assembly comprises a lower shearing knife and a second sealing rubber core arranged at the bottom of the tail end of the lower shearing knife; during shearing, the upper shearing knife and the lower shearing knife are folded for shearing; and when the sealing is carried out after the shearing, the upper shearing knife is in contact sealing with the second sealing rubber core. The utility model discloses a shear flashboard with sealing function, the cutting that can be quick and sealed the coiled tubing, guaranteed the security that the coiled tubing took out the back well head.
Description
Technical Field
The utility model relates to a well control preventer field especially relates to a shear ram with sealing function.
Background
The coal bed gas is hydrocarbon gas stored in coal beds and coal-series stratums, mainly contains methane, is an associated mineral resource of coal, and belongs to unconventional natural gas. At present, the exploration and development of coal bed gas have attracted wide attention internationally, and China has issued a coal bed gas industry policy and developed the coal bed gas industry into an important new energy industry. For the exploration and development of the coal bed gas, the related technology of coiled tubing operation is mostly adopted for mining in China.
Coiled tubing blowout preventers are important components of coiled tubing operations as well control devices, while shear rams are core components of coiled tubing blowout preventers and can be sheared by hydraulic actuation when a coiled tubing becomes stuck or is used as a production string. After the coiled tubing is lowered to the bottom coal layer, the coiled tubing is suspended by a lifting device, then the coiled tubing is cut off, the coiled tubing above a blowout preventer is extracted, and the part below the flashboard needs to be sealed before extraction to ensure the safety of a wellhead. At present, the conventional shear gate plate has a single function, only has a shearing function, does not have a sealing function, and cannot meet the requirement of safe working conditions of coal bed gas, so that the shear gate plate capable of being rapidly sealed needs to be developed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a shear gate board with sealing function, the cutting that can be quick and sealed the coiled tubing, guaranteed the security that the coiled tubing took out the back well head.
The utility model provides a technical scheme that its technical problem adopted is: a shear ram having a sealing function, comprising an upper shear ram assembly and a lower shear ram assembly for cooperation; the upper shearing flashboard component comprises an upper shearing flashboard body and an upper shearing rubber core assembly, wherein the tail end of the upper shearing flashboard assembly is embedded in and fixed in the upper shearing flashboard body; the lower shear flashboard component comprises a lower shear flashboard body and a lower shear rubber core assembly, wherein the tail end of the lower shear flashboard assembly is embedded in and fixed in the lower shear flashboard body; the upper shearing rubber core assembly comprises an upper shearing knife and a first sealing rubber core arranged at the bottom of the tail end of the upper shearing knife; the lower shearing rubber core assembly comprises a lower shearing knife and a second sealing rubber core arranged at the bottom of the tail end of the lower shearing knife; during shearing, the upper shearing knife and the lower shearing knife are folded for shearing; and when the sealing is carried out after the shearing, the upper shearing knife is in contact sealing with the second sealing rubber core.
The first sealing rubber core and the rear end of the upper shearing knife are provided with a first fixing hole at the same position; and a first fixing ring is arranged in the first fixing hole and is fixed with the upper shearing flashboard body through a screw and a fixing block.
And a support ring is further arranged at the front end of the first sealing rubber core at the bottom side of the upper shearing knife.
A second fixing hole is formed in the same position of the first sealing rubber core and the rear end of the lower shearing knife; and a second fixing ring is arranged in the second fixing hole and is fixed with the lower shear flashboard body through a screw and a fixing block.
The top of going up the shear ram body leans on terminal position and the top of lower shear ram body leans on terminal position to be provided with sealed recess respectively to be equipped with the sealed gluey core of top in the interpolation of sealed recess.
The upper shearing knife and the first sealing rubber core are vulcanized into a whole; the lower shearing knife and the second sealing rubber core are vulcanized into a whole.
The upper shearing knife and the lower shearing knife adopt a double-circular knife edge design, and the section of the continuous tube is ensured to be circular after shearing.
The utility model has the advantages that: the shear flashboard with the sealing function can rapidly cut and seal the continuous pipe, and ensures the safety of a well mouth after the continuous pipe is taken out; meanwhile, the cut pipe orifice is circular, so that the pipe orifice can be conveniently taken out of the blowout prevention box rubber barrel, the blockage is not easy to occur, the use efficiency is improved, and the field operation progress is accelerated.
Drawings
FIG. 1 is a schematic illustration of the internal structure of an embodiment of a shear ram having a sealing function;
FIG. 2 is a schematic view of an external configuration of a shear ram having a sealing function according to an embodiment;
FIG. 3 is a schematic view of an upper shear plug assembly of an embodiment of a shear ram having a sealing function;
FIG. 4 is a schematic view of a lower shear plug assembly of an embodiment of a shear ram having a sealing function;
FIG. 5 is a schematic illustration of a condition of a shear coiled tubing sealed wellhead of a shear ram having a sealing function according to an embodiment.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Examples
1-5, the present embodiment provides a shear ram having a sealing function that includes an upper shear ram assembly A and a lower shear ram assembly B cooperating together; the upper shearing flashboard assembly A comprises an upper shearing flashboard body 1 and an upper shearing rubber core assembly 2, wherein the tail end of the upper shearing flashboard assembly is embedded in and fixed in the upper shearing flashboard body 1; the lower shear flashboard component B comprises a lower shear flashboard body 3 and a lower shear rubber core assembly 4, wherein the tail end of the lower shear flashboard assembly is embedded in and fixed in the lower shear flashboard body 3; the upper shearing rubber core assembly 2 comprises an upper shearing knife 21 and a first sealing rubber core 24 arranged at the bottom of the tail end of the upper shearing knife 21; the lower shearing rubber core assembly 4 comprises a lower shearing knife 41 and a second sealing rubber core 42 arranged at the bottom of the tail end of the lower shearing knife 41; during shearing, the upper shearing knife 21 and the lower shearing knife 41 are folded for shearing; when sealing is carried out after shearing, the upper shearing knife 21 is in contact with the second sealing rubber core 42 for sealing; the first sealing rubber core 24 and the rear end of the upper shearing knife 21 are provided with a first fixing hole at the same position; a first fixing ring 23 is arranged in the first fixing hole and is fixed with the upper shear flashboard body 1 through a screw 7 and a fixing block 6; the bottom side of the upper shearing knife 21 is positioned at the front end of the first sealing rubber core 24 and is also provided with a support ring 22; a second fixing hole is formed in the same position of the first sealing rubber core 42 and the rear end of the lower shearing knife 41; a second fixing ring 43 is arranged in the second fixing hole and is fixed with the lower shear flashboard body 3 through a screw 7 and a fixing block 6; the top of the upper shear flashboard body 1 and the top of the lower shear flashboard body 3 are respectively provided with a sealing groove near the tail end, and a top sealing rubber core 5 is inserted into the sealing grooves; the upper shearing knife 21 and the first sealing rubber core 24 are vulcanized into a whole; the lower shearing knife 41 and the second sealing rubber core 42 are vulcanized into a whole; the upper shearing knife 21 and the lower shearing knife 41 adopt a double-circular knife edge design, and the section of the continuous tube after shearing is ensured to be circular.
The utility model provides a shear ram with sealing function, the space that holds and cut the coiled tubing is left to the flashboard body, and the lower shear knife is when cutting the coiled tubing, guarantees to be cut the coiled tubing the latter half and can not take place to interfere with the cutting edge rubber packing element, and the seal structure has been cut to the integral type has reduced size chain tolerance, and the precision is controlled more easily. The blade is sealed to adopt special design, and the area of the contact of the rake face of lower shearing sword and last shearing sword is great, has reduced the pressure that acts on the sealed gluey core of second effectively, has prolonged life. Possess more and extrude rubber ability, when continuous pipe axial displacement is restricted, still can guarantee reliable sealed, improved the security of well head operation.
The shear flashboard with the sealing function is characterized in that the blades are made of high-strength alloy steel and can bear huge impact load, the blades are designed to be double-circular knife edges, the knife edge stress peak value is low, the deformation is small, the shearing performance of the shear flashboard is improved, the rear section of a continuous shearing pipe is guaranteed to be circular, the continuous shearing pipe is enabled to have the largest overflowing section, and meanwhile the continuous shearing pipe passes through a blowout prevention box rubber barrel easily.
The shear flashboard with the sealing function can rapidly shear and seal the continuous pipe, and ensures the safety of a wellhead after the continuous pipe is taken out; meanwhile, the cut pipe orifice is circular, so that the pipe orifice can be conveniently taken out of the blowout prevention box rubber barrel, the blockage is not easy to occur, the use efficiency is improved, and the field operation progress is accelerated.
As shown in fig. 5, in the shear ram with a sealing function of the embodiment, in use, an upper shear ram assembly a and a lower shear ram assembly B are respectively installed at the piston heads of a left hydraulic cylinder C and a right hydraulic cylinder F of a blowout preventer, after a coiled tubing E is lowered to a bottom coal layer position, the coiled tubing is suspended by using a lifting device, the upper shear ram assembly a and the lower shear ram assembly B are closed through hydraulic control of the blowout preventer, and the rams enter an inner cavity of a shell D; during closing, the upper shearing knife and the lower shearing knife are folded to firstly shear the continuous pipe E, the continuous pipe E is continuously closed, the upper shearing knife is in contact with the second sealing rubber core of the lower shearing knife, the second sealing rubber core is further embedded into the rear part of the cutting edge of the upper shearing knife, and meanwhile, the top sealing rubber core and the shell are compressed in an interference manner to seal the top part, so that initial sealing is formed; when pressure exists in the well, the well pressure pushes the second sealing rubber core to further extrude and deform, and meanwhile, the well pressure pushes the flashboard body to float from the lower part and tightly cling to the upper sealing surface of the shell, so that well pressure sealing is formed, and finally, the effect of complete sealing is achieved.
The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.
Claims (7)
1. A shear ram having a sealing function, characterized in that: comprises an upper shear ram assembly and a lower shear ram assembly used in cooperation; the upper shearing flashboard component comprises an upper shearing flashboard body and an upper shearing rubber core assembly, wherein the tail end of the upper shearing flashboard assembly is embedded in and fixed in the upper shearing flashboard body; the lower shear flashboard component comprises a lower shear flashboard body and a lower shear rubber core assembly, wherein the tail end of the lower shear flashboard assembly is embedded and fixed in the lower shear flashboard body; the upper shearing rubber core assembly comprises an upper shearing knife and a first sealing rubber core arranged at the bottom of the tail end of the upper shearing knife; the lower shearing rubber core assembly comprises a lower shearing knife and a second sealing rubber core arranged at the bottom of the tail end of the lower shearing knife; during shearing, the upper shearing knife and the lower shearing knife are folded for shearing; and when the sealing is carried out after the shearing, the upper shearing knife is in contact sealing with the second sealing rubber core.
2. A shear ram having a sealing function according to claim 1, wherein: the first sealing rubber core and the rear end of the upper shearing knife are provided with a first fixing hole at the same position; and a first fixing ring is arranged in the first fixing hole and is fixed with the upper shearing flashboard body through a screw and a fixing block.
3. A shear ram having a sealing function according to claim 1 or 2, wherein: and a support ring is further arranged at the front end of the first sealing rubber core at the bottom side of the upper shearing knife.
4. A shear ram having a sealing function according to claim 1, wherein: a second fixing hole is formed in the same position of the first sealing rubber core and the rear end of the lower shearing knife; and a second fixing ring is arranged in the second fixing hole and is fixed with the lower shear flashboard body through a screw and a fixing block.
5. A shear ram having a sealing function according to claim 1, wherein: the top of going up the shear ram body leans on terminal position and the top of lower shear ram body leans on terminal position to be provided with sealed recess respectively to be equipped with the sealed gluey core of top in the interpolation of sealed recess.
6. A shear ram having a sealing function according to claim 1, wherein: the upper shearing knife and the first sealing rubber core are vulcanized into a whole; the lower shearing knife and the second sealing rubber core are vulcanized into a whole.
7. A shear ram having a sealing function according to claim 1, wherein: the upper shearing knife and the lower shearing knife adopt a double-circular knife edge design, and the section of the continuous tube is ensured to be circular after shearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920610468.0U CN210068059U (en) | 2019-04-29 | 2019-04-29 | Shear flashboard with sealing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920610468.0U CN210068059U (en) | 2019-04-29 | 2019-04-29 | Shear flashboard with sealing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068059U true CN210068059U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920610468.0U Active CN210068059U (en) | 2019-04-29 | 2019-04-29 | Shear flashboard with sealing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068059U (en) |
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2019
- 2019-04-29 CN CN201920610468.0U patent/CN210068059U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230427 Address after: No. 16, Xihenggang Street, Yangchenghu Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215138 Patentee after: Suzhou Dawson Drilling and Production Equipment Co.,Ltd. Address before: 215137 Taiping Town, Suzhou, Jiangsu, Xiangcheng District Patentee before: SUZHOU DOUSON DRILLING & PRODUCTION EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |