CN217055089U - Sealing equipment for oil extraction well head - Google Patents
Sealing equipment for oil extraction well head Download PDFInfo
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- CN217055089U CN217055089U CN202123226293.XU CN202123226293U CN217055089U CN 217055089 U CN217055089 U CN 217055089U CN 202123226293 U CN202123226293 U CN 202123226293U CN 217055089 U CN217055089 U CN 217055089U
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Abstract
The utility model discloses a sealing device for oil extraction well mouth, which comprises an annular sealing pipe and a square sealing pipe, wherein a polished rod operation hole is integrally formed at the center of the annular sealing pipe and the square sealing pipe, a U-shaped through cavity communicated with the polished rod operation hole is integrally formed in the annular sealing pipe, a blocking rubber ring is stuck at the upper end of the inner cavity of the U-shaped through cavity, a limit ring is welded in the inner cavity of the U-shaped through cavity, a blocking ball is placed between the blocking rubber ring and the limit ring, the U-shaped through cavity is formed in the annular sealing pipe by arranging, so that the oil liquid of well jet is blocked by a first blocking block in the polished rod operation hole, the oil liquid mainly flows to the U-shaped through cavity, the blocking ball in the U-shaped through cavity is pushed out, the blocking ball is seamlessly attached to a sealing ring under the pressure of the well jet, the oil liquid of the well jet is effectively sealed in time, further sealing protection can be provided for the device by arranging the square sealing pipe, the sealing performance of the device is further improved.
Description
Technical Field
The utility model relates to a sealing equipment technical field of oil recovery well head specifically is a sealing equipment for oil recovery well head.
Background
The oil extraction refers to the action of excavating and extracting oil in places where oil is stored, and the oil is deeply buried underground and is an important energy source, but various accidents are often accompanied in the oil extraction process, wherein the blowout accident is the most harmful drilling accident, once serious consequences are often caused, strict preventive measures must be taken, and therefore, the sealing device for the oil extraction well mouth is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sealing equipment for oil recovery well head to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme: a sealing device for oil extraction well mouth comprises an annular sealing tube and a square sealing tube, wherein a polish rod running hole is integrally formed at the center of the annular sealing tube and the square sealing tube, a buffer groove is arranged on one side of the upper part of the inner wall of the polish rod running hole in the annular sealing pipe, a U-shaped through cavity communicated with the polish rod running hole is integrally formed in the annular sealing pipe, the upper end of the U-shaped through cavity and the buffer groove are oppositely arranged by taking the polish rod running hole as a symmetry axis, the lower end of the U-shaped through cavity is arranged at the lower part of the inner wall of the polish rod running hole, a stopping rubber ring is stuck at the upper end of the inner cavity of the U-shaped through cavity, a limiting ring is welded at one side of the blocking rubber ring in the inner cavity of the U-shaped through cavity, a plugging ball is arranged between the blocking rubber ring and the limiting ring, the surface of the plugging ball is pasted with a sealing rubber sleeve, and the top end of the buffer groove is pasted with a sealing ring.
Preferably, the square sealing tube comprises a second plugging block and an internal thread sleeve, an external thread section is arranged on one side of the outside of the second plugging block, the other side of the outside of the second plugging block is a sealing end, a rotating wheel is fixed at the external thread end of the second plugging block, and the rotating wheel is movably connected with a rotating rod through a bolt.
Preferably, the internal thread sleeve is integrally formed in the middle of the outer side of the square sealing tube, the square sealing tube is located at the bottom of the internal thread sleeve and is provided with a connecting hole communicated with the polish rod running hole, the external thread section of the second plugging block is in threaded connection with the internal thread sleeve, the sealing end of the second plugging block is seamlessly and movably inserted into the connecting hole, the inner wall of the square sealing tube is integrally formed with a groove at the opposite position of the connecting hole, and the groove is matched with the sealing end of the second plugging block.
Preferably, the both ends of annular gland bonnet and the equal integrated into one piece in bottom of square gland bonnet have the ring flange, a plurality of internal thread through-holes have been seted up to the equal equidistance of ring flange terminal surface a week, ring flange joint is passed through with the bottom of square gland bonnet in the top of annular gland bonnet.
Preferably, a blocking cavity with an inverted cone-shaped top is formed in the middle of the polished rod running hole in the annular sealing pipe, two guide grooves are symmetrically formed in the inverted cone-shaped position at the top end of the blocking cavity, first blocking blocks are connected in the two guide grooves, a guide rail is fixed at one end of each first blocking block, and the guide rail is connected in the guide grooves in a sliding manner.
Preferably, a polished rod correction ring is fixed at the top end of the blocking cavity, a buffer pad is adhered to the inner wall of one end, close to the polished rod correction ring, of each of the two guide grooves, and a guide block is fixed at the bottom end of each buffer groove.
Compared with the prior art, the beneficial effects of the utility model are that: the annular sealing pipe is provided with the U-shaped through cavity, so that oil in the blowout is mainly enabled to flow to the U-shaped through cavity after being blocked by the first blocking block in the polished rod running hole, the blocking ball in the U-shaped through cavity is pushed out, the blocking ball is enabled to be in seamless fit with the sealing ring under the pressure of the blowout, and the oil in the blowout is effectively sealed in time;
the square sealing pipe can provide further sealing protection for the equipment, so that the sealing performance of the equipment is further improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic view of the internal structure of the annular sealing tube of the present invention;
fig. 3 is a schematic view of the internal structure of the square sealing tube of the present invention;
fig. 4 is an enlarged structural schematic diagram of the area a in fig. 2 according to the present invention;
fig. 5 is a schematic view of the connection structure of the first blocking block and the guide groove of the present invention.
In the figure: 1. an annular seal tube; 2. a square sealing tube; 20. connecting holes; 21. an internal thread sleeve; 22. a second plugging block; 23. a groove; 24. a rotating wheel; 25. a rotating rod; 3. an internally threaded through-hole; 4. a polish rod operation hole; 51. a guide groove; 52. a first plugging block; 53. a guide rail; 61. plugging the ball; 62. sealing the rubber sleeve; 7. a limiting ring; 8. a blocking rubber ring; 91. a seal ring; 92. a guide block; 10. a polished rod straightening ring; 11. a U-shaped through cavity; 12. a buffer tank; 13. a blocking cavity; 14. a cushion pad; 15. a flange plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present invention provides a technical solution: a sealing device for an oil production wellhead comprises an annular sealing pipe 1 and a square sealing pipe 2;
the two ends of the annular sealing pipe 1 and the bottom end of the square sealing pipe 2 are integrally formed with flange plates 15, a plurality of internal thread through holes 3 are uniformly arranged on the periphery of the end face of the flange plate 15 at equal intervals, the top end of the annular sealing pipe 1 is connected to the bottom end of the square sealing pipe 2 in a flange mode, the annular sealing pipe 1 and the square sealing pipe 2 are connected in a flange mode through the flange plates 15, the sealing performance of equipment is guaranteed, the central positions of the annular sealing pipe 1 and the square sealing pipe 2 are integrally formed with polish rod operation holes 4 which are communicated with each other, and the polish rod operation holes 4 are arranged, so that the work of an oil extraction polish rod is facilitated;
a buffer groove 12 is arranged on one side of the upper part of the inner wall of a polish rod running hole 4 in an annular sealing tube 1, a sealing ring 91 is stuck at the top end of the buffer groove 12, a guide block 92 is fixed at the bottom end of the buffer groove 12, a U-shaped through cavity 11 communicated with the polish rod running hole 4 is integrally formed in the annular sealing tube 1, the upper end of the U-shaped through cavity 11 and the buffer groove 12 are oppositely arranged by taking the polish rod running hole 4 as a symmetry axis, the lower end of the U-shaped through cavity 11 is arranged at the lower part of the inner wall of the polish rod running hole 4, a stopping rubber ring 8 is stuck at the upper end of the inner cavity of the U-shaped through cavity 11, a limiting ring 7 is welded at one side of the stopping rubber ring 8 in the inner cavity of the U-shaped through cavity 11, a sealing ball 61 is placed between the stopping rubber ring 8 and the limiting ring 7, the normal-state sealing ball 61 is limited by the stopping rubber ring 8 and the limiting ring 7 to prevent the movement of the sealing ball 61, a sealing rubber sleeve 62 is stuck on the surface of the sealing ball 61 to improve the sealing effect of the sealing ball 61, by arranging the guide block 92, when the blocking ball 61 is flushed out of the U-shaped through cavity 11, the guide block 92 guides the blocking ball 61 to roll below the sealing ring 91 along the slope on the guide block 92, and the blocking ball 61 is completely attached to the sealing ring 91 under the pressure of the blowout, so that the injection of oil in the oil extraction blowout is prevented;
the middle part of a polish rod operation hole 4 in an annular sealing pipe 1 is provided with a blocking cavity 13 with the top part being in an inverted cone shape, the blocking cavity 13 is arranged to temporarily block oil of a blowout when the blowout occurs, two guide grooves 51 are symmetrically arranged at the inverted cone shape position at the top end of the blocking cavity 13, a first blocking block 52 is connected in each guide groove 51, one end of each first blocking block 52 is fixed with a guide rail 53, each guide rail 53 is connected in each guide groove 51 in a sliding mode, the guide rails 53 are matched with the guide grooves 51 to be in sliding connection, the first blocking blocks 52 can be pushed to the top end of the blocking cavity 13 rapidly by the pushing of the blowout force when the blowout occurs, the first blocking blocks 52 can be used for temporarily blocking the oil of the blowout, the flow of the oil of the blowout in the polish rod operation hole 4 is reduced, the oil of the blowout is guided into the U-shaped through cavity 11, and the blocking of the oil of the blowout is completed by the blocking balls 61, a polished rod correction ring 10 is fixed at the top end of the blocking cavity 13, the polished rod correction ring 10 is arranged above the first blocking cavity 13, so that the polished rod for oil extraction can be corrected to a certain extent when the polished rod for oil extraction works, the abrasion of the polished rod for oil extraction can be reduced, a buffer cushion 14 is adhered to the inner wall of one end of each of the two guide grooves 51 close to the polished rod correction ring 10, and the buffer cushion 14 is arranged in each guide groove 51 to reduce the impact of the first blocking block 52;
the square sealing tube 2 comprises a second plugging block 22 and an internal thread sleeve 21 with an internal thread section on the inner wall, one side of the outside of the second plugging block 22 is provided with an external thread section, the other side is a sealing end, the internal thread sleeve 21 is integrally formed in the middle of the outside of the square sealing tube 2, the square sealing tube 2 is positioned at the bottom of the internal thread sleeve 21 and is provided with a connecting hole 20 communicated with the polish rod running hole 4, the external thread section of the second plugging block 22 is in threaded connection with the internal thread sleeve 21, the sealing end of the second plugging block 22 is seamlessly and movably inserted into the connecting hole 20, so that the second plugging block 22 is seamlessly connected with the connecting hole 20, the sealing property of the device is ensured, a groove 23 is integrally formed on the opposite position of the connecting hole 20 on the inner wall of the square sealing tube 2, the groove 23 is matched with the sealing end of the second plugging block 22 and is arranged in the groove 23 matched with the second plugging block 22, and the oil sprayed by a well is completely sealed, the external threaded end of second shutoff piece 22 is fixed with runner 24, and runner 24 has bull stick 25 through bolt swing joint, uses runner 24 and bull stick 25, conveniently carries out the propelling movement to second shutoff piece 22 to and the sealing of the quick completion equipment in time, thereby the fluid of further assurance to the blowout carries out thorough shutoff.
According to the working principle or the structural principle, when the oil well head sealing device is used, the bottom end of the annular sealing tube 1 is connected to an oil extraction device of the oil well head in a seamless mode, then the bottom end of the square sealing tube 2 is connected to the top end of the annular sealing tube 1 in a seamless mode, and finally the oil extraction polished rod is connected to the oil extraction device through the polished rod operation hole 4, so that the oil well head can be guaranteed in a sealing mode;
when a blowout accident occurs, the oil in the blowout is temporarily blocked by the first blocking block 52 in the blocking cavity 13, the oil in the blowout is guided into the U-shaped through cavity 11, then the blocking ball 61 is discharged by the oil in the blowout, then the blocking ball 61 is guided to the position below the sealing ring 91 by the guide block 92, the blocking ball 61 is completely attached to the sealing ring 91 under the pressure of the blowout, the blocking of the oil in the blowout by the blocking ball 61 is ensured, and then a worker timely pushes the second blocking block 22 to the groove 23 by rotating the rotating rod 25, so that the equipment is completely sealed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A sealing device for oil recovery well head, includes annular sealing pipe (1) and square sealing pipe (2), its characterized in that: a polished rod operation hole (4) is integrally formed in the center of the annular sealing pipe (1) and the square sealing pipe (2), a buffer groove (12) is formed in one side of the upper portion of the inner wall of the polished rod operation hole (4) in the annular sealing pipe (1), a U-shaped through cavity (11) communicated with the polished rod operation hole (4) is integrally formed in the annular sealing pipe (1), the upper end of the U-shaped through cavity (11) and the buffer groove (12) are oppositely arranged by taking the polished rod operation hole (4) as a symmetric axis, the lower end of the U-shaped through cavity (11) is arranged at the lower portion of the inner wall of the polished rod operation hole (4), a blocking rubber ring (8) is pasted at the upper end of the inner cavity of the U-shaped through cavity (11), a limiting ring (7) is welded at one side of the inner cavity of the U-shaped through cavity (11) located at the blocking rubber ring (8), a sealing ball (61) is placed between the blocking rubber ring (8) and the limiting ring (7), the surface of shutoff ball (61) is pasted and is had sealed rubber sleeve (62), the top of dashpot (12) is pasted and is had sealing washer (91).
2. A sealing apparatus for a production wellhead according to claim 1, characterised in that: square sealed tube (2) include second shutoff piece (22) and internal thread cover (21), second shutoff piece (22) outside one side is equipped with external screw thread section and opposite side and is the sealed end, the external screw thread end of second shutoff piece (22) is fixed with runner (24), runner (24) have bull stick (25) through bolt swing joint.
3. A sealing apparatus for a production wellhead according to claim 2, in which: internal thread cover (21) integrated into one piece is in square sealed tube (2) outside middle part, square sealed tube (2) are located internal thread cover (21) bottom and offer connecting hole (20) that are linked together with polished rod travel hole (4), the external screw thread section threaded connection of second shutoff piece (22) is in internal thread cover (21), the sealed end seamless activity of second shutoff piece (22) inserts in connecting hole (20), the opposition department integrated into one piece that square sealed tube (2) inner wall is located connecting hole (20) is fluted (23), and the sealed end looks adaptation of recess (23) and second shutoff piece (22).
4. A sealing apparatus for a production wellhead according to claim 1, characterised in that: the equal integrated into one piece in both ends of annular gland bush (1) and the bottom of square gland bush (2) has ring flange (15), a plurality of internal thread through-holes (3) have been seted up to ring flange (15) terminal surface a week equal equidistance, ring flange (15) flange joint is passed through with the bottom of square gland bush (2) in the top of annular gland bush (1).
5. A sealing apparatus for a production wellhead according to claim 1, characterised in that: the utility model discloses a sealing device, including annular sealing tube (1), polished rod travel hole (4) in the annular sealing tube (1) middle part is seted up the top and is blocked chamber (13) of back taper, two guide slot (51) have been seted up to the back taper department symmetry on blocking chamber (13) top, two all be connected with first shutoff piece (52) in guide slot (51), the one end of first shutoff piece (52) is fixed with guide rail (53), guide rail (53) sliding connection is in guide slot (51).
6. A sealing apparatus for a production wellhead according to claim 5, in which: a polished rod correcting ring (10) is fixed at the top end of the blocking cavity (13), a buffer pad (14) is adhered to the inner wall of one end, close to the polished rod correcting ring (10), of each of the two guide grooves (51), and a guide block (92) is fixed at the bottom end of each buffer groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226293.XU CN217055089U (en) | 2021-12-21 | 2021-12-21 | Sealing equipment for oil extraction well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123226293.XU CN217055089U (en) | 2021-12-21 | 2021-12-21 | Sealing equipment for oil extraction well head |
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| Publication Number | Publication Date |
|---|---|
| CN217055089U true CN217055089U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123226293.XU Active CN217055089U (en) | 2021-12-21 | 2021-12-21 | Sealing equipment for oil extraction well head |
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| CN (1) | CN217055089U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115637946A (en) * | 2022-12-23 | 2023-01-24 | 大庆市华禹石油机械制造有限公司 | Petroleum wellhead sealing device |
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2021
- 2021-12-21 CN CN202123226293.XU patent/CN217055089U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115637946A (en) * | 2022-12-23 | 2023-01-24 | 大庆市华禹石油机械制造有限公司 | Petroleum wellhead sealing device |
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