CN213016277U - Blowout preventer for thick oil thermal recovery wellhead - Google Patents
Blowout preventer for thick oil thermal recovery wellhead Download PDFInfo
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- CN213016277U CN213016277U CN202021974090.1U CN202021974090U CN213016277U CN 213016277 U CN213016277 U CN 213016277U CN 202021974090 U CN202021974090 U CN 202021974090U CN 213016277 U CN213016277 U CN 213016277U
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Abstract
The utility model provides a viscous crude thermal recovery well head blowout preventer, which comprises an outer shell, the shell is the decurrent cylindric of opening, shell top surface central point puts and has seted up first through-hole, the fixed diaphragm that is equipped with in the shell inner chamber, the second through-hole has been seted up to diaphragm central point, the sucker rod is worn to be equipped with jointly inside first through-hole and the second through-hole, the diaphragm below is equipped with annular clamp plate, annular clamp plate's hole and sucker rod clearance fit, annular clamp plate's periphery then with shell inside wall sliding fit, the first exhaust hole of several has been seted up on the diaphragm, then fixed mounting has several shutoff. This device on the one hand can continuously discharge the gas that the downhole heating produced when normal use, avoids the pressure in the pit to rise, and on the other hand can automatic shutoff well head avoid the blowout when taking place unexpected blowout accident, and this device need not external power and electrical control device, has the advantage that simple structure is reliable, low cost easily produces, is particularly suitable for promoting in viscous crude thermal recovery well production field.
Description
Technical Field
The utility model belongs to viscous crude thermal recovery well field, specifically speaking are viscous crude thermal recovery well head blowout preventer.
Background
The wellhead blowout preventer is a safety device capable of preventing gas and oil in the well from being sprayed out from the wellhead due to suddenly increased pressure, and for thick oil thermal recovery, the blowout preventer needs to normally discharge gas generated by heating in time on one hand and process the gas, and on the other hand, the blowout preventer also needs to be capable of immediately plugging the wellhead once a blowout accident occurs, and in addition, once a sucker rod is pulled out from the well or falls off accidentally, the blowout preventer can also cause an accident caused by failure of a blowout prevention function if the oil rod cannot be plugged in the first time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a viscous crude thermal recovery well head blowout preventer for solve the defect among the prior art.
The utility model discloses a following technical scheme realizes:
a blowout preventer for thick oil thermal recovery well mouth comprises a shell, wherein the shell is in a cylinder shape with a downward opening, a first through hole is formed in the center of the top surface of the shell, a transverse plate is fixedly arranged in an inner cavity of the shell, a second through hole is formed in the center of the transverse plate, a sucker rod is jointly penetrated through the first through hole and the second through hole, an annular pressing plate is arranged below the transverse plate, an inner hole of the annular pressing plate is in clearance fit with the sucker rod, the periphery of the annular pressing plate is in sliding fit with the inner side wall of the shell, a plurality of first exhaust holes are formed in the transverse plate, a plurality of plugging cones are fixedly arranged on the top surface of the annular pressing plate and are respectively positioned below the corresponding first exhaust holes, a plurality of second exhaust holes are also vertically formed in the annular pressing plate, a plurality of first threaded through holes are formed in the top surface of, the shell is provided with a plurality of adjusting bolts, the screw rod parts of the adjusting bolts respectively downwards penetrate through the corresponding first thread through holes and the corresponding second thread through holes and are in thread fit with the first thread through holes and the second thread through holes, the lower ends of the peripheries of the adjusting bolts are provided with bearings for unthreaded polished rods and fixed sleeves, the top surface of the annular pressing plate is respectively and fixedly provided with a plurality of springs, the upper ends of the springs are respectively and fixedly connected with corresponding bearing outer rings, the upper part of the periphery of the shell is fixedly connected with an exhaust pipe, one end of the exhaust pipe is communicated with the inner cavity of the shell.
According to the blowout preventer for the thick oil thermal recovery wellhead, the sealing rings are fixedly mounted in the first through hole and the second through hole respectively, and inner rings of the sealing rings are in contact with the periphery of the sucker rod.
According to the blowout preventer for the thick oil thermal recovery wellhead, the upper ends of the stud parts of the adjusting bolts are all provided with the limiting nuts in a threaded mode, and the limiting nuts are all located above the shell.
According to the blowout preventer for the thick oil thermal recovery wellhead, the flange is fixedly installed at the bottom end of the outer periphery of the shell, and the inner ring of the flange is fixedly connected with the outer periphery of the shell.
According to the blowout preventer for the thick oil thermal recovery well mouth, the top surface of the inner cavity of the shell and the bottom surface of the transverse plate are respectively and fixedly provided with the torsion spring bearing seat, the torsion spring bearing seats are respectively and rotatably connected with one end of the connecting rod, and the other end of the connecting rod is respectively and fixedly provided with the universal ball wheel.
The utility model has the advantages that: when the device is used, a user penetrates the sucker rod into a well from the first through hole and the second through hole to carry out normal oil extraction operation, the user can adjust the vertical distance between the annular pressing plate and the transverse plate by rotating the adjusting bolt so as to adjust the length of the plugging cone inserted into the corresponding first exhaust hole, thereby realizing dynamic adjustment of the exhaust volume of the first exhaust hole, and gas generated by underground heating can be sent to an external waste gas treatment device through the second exhaust hole, the first exhaust hole and the exhaust pipe; when a blowout accident happens underground and a large amount of gas or oil is suddenly sprayed to a wellhead, the second exhaust hole with a smaller opening can not pass through a large amount of fluid in a short time, the annular pressing plate is directly pushed upwards by huge air pressure or oil pressure, the first exhaust hole can be immediately plugged by the plugging cone to avoid the blowout, and after plugging is finished, if a user is well prepared, the user can rotate the adjusting bolt to move downwards and push the annular pressing plate to move downwards to reopen the first exhaust hole, so that the device can stably relieve pressure; this device on the one hand can continuously discharge the gas that the downhole heating produced when normal use, avoids the pressure in the pit to rise, and on the other hand can automatic shutoff well head avoid the blowout when taking place unexpected blowout accident, and this device need not external power and electrical control device, has the advantage that simple structure is reliable, low cost easily produces, is particularly suitable for promoting in viscous crude thermal recovery well production field.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of the present invention.
Description of the drawings: 1. the shell, 11, first through-hole, 2, diaphragm, 21, second through-hole, 3, sucker rod, 4, annular clamp plate, 22, first exhaust hole, 41, shutoff awl, 42, second exhaust hole, 12, first screw thread through-hole, 23, second screw thread through-hole, 5, adjusting bolt, 51, bearing, 52, spring, 13, blast pipe, 53, stop nut, 6, flange, 7, torsional spring bearing frame, 71, connecting rod, 72, universal ball wheel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
A blowout preventer for a thick oil thermal recovery well mouth comprises a shell 1, wherein the shell 1 is in a cylindrical shape with a downward opening, a first through hole 11 is formed in the center of the top surface of the shell 1, a transverse plate 2 is fixedly arranged in the inner cavity of the shell 1, the periphery of the transverse plate 2 is fixedly connected with the inner side wall of the shell 1, a second through hole 21 is formed in the center of the transverse plate 2, the first through hole 11 and the second through hole 21 have the same diameter and are concentric with each other, a sucker rod 3 jointly penetrates through the first through hole 11 and the second through hole 21, an annular pressure plate 4 is arranged below the transverse plate 2, the inner hole of the annular pressure plate 4 is in clearance fit with the sucker rod 3, the periphery of the annular pressure plate 4 is in sliding fit with the inner side wall of the shell 1, a plurality of first exhaust holes 22 are formed in the transverse plate 2, a plurality of plugging cones 41 are fixedly, the diameter of the cylindrical part of the plugging cone 41 is larger than that of the first exhaust hole 22, the plugging cone 41 is respectively positioned below the first exhaust holes 22, a plurality of second exhaust holes 42 are also vertically arranged on the annular pressing plate 4, a plurality of first threaded through holes 12 are arranged on the top surface of the shell 1, a plurality of second threaded through holes 23 are arranged on the transverse plate 2, the first threaded through holes 12 and the second threaded through holes 23 are respectively in one-to-one correspondence in position, a plurality of adjusting bolts 5 are arranged on the shell 1, the screw rod parts of the adjusting bolts 5 respectively downwards penetrate through the corresponding first threaded through holes 12 and the corresponding second threaded through holes 23 and are in threaded fit with the first threaded through holes and the second threaded through holes, the lower end of the periphery of each adjusting bolt 5 is a polished rod without threads, bearings 51 are fixedly sleeved on the lower end of the periphery of each adjusting bolt, the bearings 51 are all positioned below the transverse plate 2, an exhaust pipe 13 is fixedly connected to the upper portion of the periphery of the housing 1, one end of the exhaust pipe 13 is communicated with the inner cavity of the housing 1, and the other end of the exhaust pipe 13 is connected with an external waste gas treatment device through a pipeline, wherein the external waste gas treatment device is not shown in the figure. When the sucker rod is used, a user penetrates the sucker rod 3 into a well from the first through hole 11 and the second through hole 21 to carry out normal oil extraction operation, the user can adjust the vertical distance between the annular pressing plate 4 and the transverse plate 2 by rotating the adjusting bolt 5 to adjust the length of the plugging cone 41 inserted into the corresponding first exhaust hole 22, so that the dynamic adjustment of the exhaust volume of the first exhaust hole 22 is realized, the longer the plugging cone 41 is inserted into the first exhaust hole 22, the smaller the gap between the conical surface of the plugging cone 41 and the inner peripheral surface of the first exhaust hole 22 is, the smaller the exhaust volume of the first exhaust hole 22 is, and gas generated by underground heating can be sent to an external waste gas treatment device through the second exhaust hole 42, the first exhaust hole 22 and the exhaust; when a blowout accident occurs underground and a large amount of gas or oil is suddenly sprayed to a wellhead, the second exhaust hole 42 with a smaller opening cannot pass a large amount of fluid in a short time, the diameter of the second exhaust hole 42 is about 3 mm, the total amount of the second exhaust hole is about one tenth of the diameter of the wellhead, the annular pressure plate 4 can be directly pushed upwards by huge air pressure or oil pressure, the spring 52 is of a type of about 50N in compression, the underground pressure is far greater than the elastic force of the spring 52 when the blowout accident occurs, the plugging cone 41 can immediately plug the first exhaust hole 22 to avoid blowout, after plugging is completed, if a user has prepared properly, for example, a pressure relief device is connected to the exhaust pipe 13, the user can rotate the adjusting bolt 5 to move downwards to push the annular pressure plate 4 to move downwards to reopen the first exhaust hole 22, and the device can perform stable pressure relief; this device on the one hand can continuously discharge the gas that the downhole heating produced when normal use, avoids the pressure in the pit to rise, and on the other hand can automatic shutoff well head avoid the blowout when taking place unexpected blowout accident, and this device need not external power and electrical control device, has the advantage that simple structure is reliable, low cost easily produces, is particularly suitable for promoting in viscous crude thermal recovery well production field.
Specifically, as shown in fig. 1, in the present embodiment, sealing rings are respectively and fixedly installed inside the first through hole 11 and the second through hole 21, and inner rings of the sealing rings are both in contact with an outer periphery of the sucker rod 3. This structure can improve the sealing performance between sucker rod 3 and shell 1 and diaphragm 2, avoids the oil to spill over.
Specifically, as shown in fig. 1, in the present embodiment, the upper end of the stud portion of the adjusting bolt 5 is provided with a limiting nut 53 through threads, and the limiting nuts are located above the housing 1. Because if the user screws the adjusting bolt 5 too far down, even if the spring 52 is pushed by the pressure in the well to be completely compressed, the annular pressure plate 4 does not move upwards for enough distance to completely block the first exhaust hole 22 by the blocking cone 41, the device loses the blowout prevention blocking function, and the structure can limit the downward displacement of the adjusting bolt 5 by the limit nut 53; if when a blowout accident occurs, the annular pressing plate 4 moves upwards to block the first exhaust hole 22, and at this time, a user is ready to perform corresponding preparation, when pressure relief needs to be performed in the well, the user firstly rotates the limit nut 53 to move the limiting nut upwards to increase the downward displacement range of the adjusting bolt 5, then the adjusting bolt 5 can be rotated to continue moving downwards to push the annular pressing plate 4 downwards, the spring 52 cannot continue to be compressed after being compressed to the limit length, and therefore the annular pressing plate 4 is pushed to move downwards, and the blocking cone 41 can downwards exit the first exhaust hole 22 to recover the exhaust.
Further, as shown in fig. 1, in the present embodiment, a flange 6 is fixedly installed at the bottom end of the outer periphery of the housing 1, and an inner ring of the flange 6 is fixedly connected with the outer periphery of the housing 1. This structure can be convenient for the user utilize flange 6 with this device fixed mounting on the well head, but the preferred welding of mounting means or bolted connection, the mounting means of flange be current mature technology, no longer give unnecessary details here.
Furthermore, as shown in fig. 1, in this embodiment, the top surface of the inner cavity of the housing 1 and the bottom surface of the transverse plate 2 are respectively and fixedly installed with a torsion spring bearing seat 7, the torsion spring bearing seats 7 are respectively and rotatably connected to one end of a connecting rod 71, the bearing seat with a torsion spring is the prior art, the detailed structure thereof is not repeated herein, the other end of the connecting rod 71 is respectively and fixedly installed with a universal ball wheel 72, and the fixed housing of the universal ball wheel 72 is respectively and fixedly connected to the corresponding connecting rod 71. When the sucker rod 3 is inserted into the device downwards from the first through hole 11 and the second through hole 21, the sucker rod 3 can turn and push the universal ball wheel 72 downwards around the torsion spring bearing seat 7, the rolling ball of the universal ball wheel 72 can be in rolling fit with the periphery of the sucker rod 3, when the sucker rod 3 is pulled out or an accidental slipping accident occurs, the universal ball wheel 72 can be driven by the torsion spring bearing seat 7 to turn upwards, the ball wheel of the universal ball wheel 72 can plug the corresponding first through hole 11 and the second through hole 21 so as to prevent oil or gas from being sprayed out from the first through hole 11 and the second through hole 21, and the device can still maintain a normal plugging function, and the structure of the universal ball wheel 72 can reduce the abrasion of the structure to the periphery of the sucker rod 3.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. The utility model provides a viscous crude thermal recovery well head blowout preventer, includes shell (1), and shell (1) is the downward cylindric of opening, characterized in that: a first through hole (11) is formed in the center of the top surface of the shell (1), a transverse plate (2) is fixedly arranged in the inner cavity of the shell (1), a second through hole (21) is formed in the center of the transverse plate (2), the first through hole (11) and the second through hole (21) jointly penetrate through the sucker rod (3), an annular pressing plate (4) is arranged below the transverse plate (2), an inner hole of the annular pressing plate (4) is in clearance fit with the sucker rod (3), the periphery of the annular pressing plate (4) is in sliding fit with the inner side wall of the shell (1), a plurality of first exhaust holes (22) are formed in the transverse plate (2), a plurality of plugging cones (41) are fixedly arranged on the top surface of the annular pressing plate (4), the plugging cones (41) are respectively located below the corresponding first exhaust holes (22), a plurality of second exhaust holes (42) are also vertically formed in the annular pressing plate (4), a plurality of, a plurality of second thread through holes (23) are formed in the transverse plate (2), the first thread through holes (12) are in position one-to-one correspondence with the second thread through holes (23) respectively, a plurality of adjusting bolts (5) are arranged on the shell (1), screw rod parts of the adjusting bolts (5) respectively downwards penetrate through the corresponding first thread through holes (12) and the second thread through holes (23) and are in thread fit with the first thread through holes and the second thread through holes, bearings (51) are fixedly sleeved on the lower ends of the peripheries of the adjusting bolts (5) and are unthreaded polish rods, a plurality of springs (52) are fixedly mounted on the top surface of the annular pressing plate (4) respectively, the upper ends of the springs (52) are fixedly connected with outer rings of the corresponding bearings (51) respectively, an exhaust pipe (13) is fixedly connected to the upper portion of the periphery of the shell (1), one end of the exhaust pipe (13) is communicated with.
2. The blowout preventer for the thick oil thermal recovery wellhead according to claim 1, wherein: and sealing rings are respectively and fixedly installed in the first through hole (11) and the second through hole (21), and inner rings of the sealing rings are in contact with the periphery of the sucker rod (3).
3. The blowout preventer for the thick oil thermal recovery wellhead according to claim 1, wherein: and the upper end of the stud part of the adjusting bolt (5) is provided with a limiting nut (53) in a threaded manner, and the limiting nuts are positioned above the shell (1).
4. The blowout preventer for the thick oil thermal recovery wellhead according to claim 1, wherein: the bottom end of the periphery of the shell (1) is fixedly provided with a flange (6), and the inner ring of the flange (6) is fixedly connected with the periphery of the shell (1).
5. The blowout preventer for the thick oil thermal recovery wellhead according to claim 1, wherein: the top surface of the inner cavity of the shell (1) and the bottom surface of the transverse plate (2) are respectively and fixedly provided with a torsion spring bearing seat (7), the torsion spring bearing seats (7) are respectively and rotatably connected with one end of a connecting rod (71), and the other end of the connecting rod (71) is respectively and fixedly provided with a universal ball wheel (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021974090.1U CN213016277U (en) | 2020-09-11 | 2020-09-11 | Blowout preventer for thick oil thermal recovery wellhead |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021974090.1U CN213016277U (en) | 2020-09-11 | 2020-09-11 | Blowout preventer for thick oil thermal recovery wellhead |
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| CN213016277U true CN213016277U (en) | 2021-04-20 |
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| CN202021974090.1U Active CN213016277U (en) | 2020-09-11 | 2020-09-11 | Blowout preventer for thick oil thermal recovery wellhead |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023115663A1 (en) * | 2021-12-21 | 2023-06-29 | 烟台杰瑞石油装备技术有限公司 | Oil extraction system, blowout prevention device and oil extraction method |
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2020
- 2020-09-11 CN CN202021974090.1U patent/CN213016277U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023115663A1 (en) * | 2021-12-21 | 2023-06-29 | 烟台杰瑞石油装备技术有限公司 | Oil extraction system, blowout prevention device and oil extraction method |
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Effective date of registration: 20230913 Address after: 257000 Shengli Industrial Park, Dongying City, Shandong Province (south of No. 4 road and west of No. 9 road of Shengyuan sub district office) Patentee after: SHANDONG DESHI PETROLEUM EQUIPMENT Co.,Ltd. Address before: 257081 Shengli Industrial Park, Dongying District, Dongying City, Shandong Province Patentee before: SHANDONG DESHI PETROLEUM EQUIPMENT Co.,Ltd. Patentee before: Deshi Energy Technology Group Co.,Ltd. |