CN111636844A - Pressure rotary pumping blowout preventer - Google Patents
Pressure rotary pumping blowout preventer Download PDFInfo
- Publication number
- CN111636844A CN111636844A CN202010557310.9A CN202010557310A CN111636844A CN 111636844 A CN111636844 A CN 111636844A CN 202010557310 A CN202010557310 A CN 202010557310A CN 111636844 A CN111636844 A CN 111636844A
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- China
- Prior art keywords
- rod
- shell
- central screw
- connecting flange
- blowout preventer
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- 238000005086 pumping Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 238000003825 pressing Methods 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
- E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The invention is suitable for the field of oil field mechanical equipment, in particular to a pressurized rotary pumping blowout preventer, which comprises a central screw rod rotationally connected to a shell; the central screw is in power transmission connection with a pressing rod, and the pressing rod is movably sleeved outside the central screw; the device also comprises a connecting flange; the connecting flange is detachably arranged on the shell, and the pressing rod penetrates through the shell and penetrates into the connecting flange; the connecting flange is connected with a small well head four-way at one side far away from the shell, and a sucker rod polish rod is arranged in the small well head four-way; a gate plate rubber core is movably inserted into the connecting flange and connected to the pressing rod; the small four-way joint of the well head is connected and sealed on a connecting flange, the pressing rod drives the flashboard rubber core to abut against the sucker rod polished rod, a sealing groove formed in the flashboard rubber core is sealed with the sucker rod polished rod in a detachable mode, and the sucker rod polished rod can be rotated under pressure to achieve operation.
Description
Technical Field
The invention relates to the field of oilfield mechanical equipment, in particular to a pressurized rotary pumping blowout preventer.
Background
With the application of oil field production increasing measures, especially the wide application of fracturing technology, oil-water well heads generate pressure, so that the operation under pressure is widely applied to the construction operation of oil-water wells, and especially the safety of the well heads must be ensured in the dismounting process of the well heads for construction safety.
The mode that present oil field adopted is for carrying out the dismantlement of well head after releasing to the well head non-pressure through releasing, and this kind of mode safe and reliable, but this mode shortcoming is also very obvious, releases the pressure mode through the well head, releases the pressure cycle length to influence the construction progress, influence output.
Disclosure of Invention
The invention aims to provide a pressurized rotary pumping blowout preventer, which aims to solve the problems that the existing mode adopted by an oil field is to disassemble a wellhead after the wellhead is depressurized to be pressureless, the mode is safe and reliable, but the mode has obvious defects, and the wellhead depressurization mode has long depressurization cycle, so that the construction progress is influenced and the yield is influenced; in order to realize the purpose, the following technical scheme is specifically provided:
a pressurized rotary pumping blowout preventer comprises a central screw rod which is rotationally connected to a shell;
the central screw is in power transmission connection with a pressing rod, the pressing rod is movably sleeved outside the central screw, and the central screw limited and rotated by the shell is used for lifting and adjusting the pressing rod through power transmission matching;
the device also comprises a connecting flange;
the connecting flange is detachably arranged on the shell, and the pressing rod penetrates through the shell to be inserted into the connecting flange and is sealed through a plurality of sealing structures;
the connecting flange is connected with a small wellhead four-way at one side far away from the shell and is arranged in a sealing manner, and a sucker rod polish rod is arranged in the small wellhead four-way;
the inside activity interlude of flange has flashboard rubber core, and flashboard rubber core connects on compressing tightly the pole, drives flashboard rubber core and supports and lean on the sucker rod polished rod at compressing tightly the pole decline in-process to utilize the last seal groove of seting up of flashboard rubber core and sucker rod polished rod formation sealed, seal the pressure between about the little cross of well head.
The compressing rod penetrates into the connecting flange to be sealed through a multi-sealing structure, the small four-way joint of the well mouth is connected and sealed on the connecting flange, after the compressing rod is adjusted in a lifting mode through power transmission fit by utilizing a central lead screw of limiting rotation of a shell, the compressing rod drives a flashboard rubber core to abut against a sucker rod polished rod in the pressing process, sealing grooves formed in the flashboard rubber core are sealed with the sucker rod polished rod, the pressure between the upper portion and the lower portion of the small four-way joint of the well mouth is sealed, the well mouth is free of pressure, operation under the pressure is conducted on the well mouth, sealing grooves formed in the specific flashboard rubber core and the sucker rod polished rod can be used for detachably sealing the sucker rod polished rod, and.
In the invention: the shell comprises an upper shell and a lower shell, a guide sleeve is arranged between the upper shell and the lower shell, and a plurality of guide grooves are formed in the guide sleeve;
wherein, the uide bushing is connected as an organic whole with last casing and/or lower casing.
Further scheme: the guide sleeve is integrally connected with the upper shell and/or the lower shell through welding.
In the invention: the power transmission connection is a threaded transmission connection, the compression rod is movably sleeved outside the central screw rod, and the compression rod is adjusted in a lifting mode through the threaded transmission fit by the aid of the central screw rod with the shell limited and rotating.
Further scheme: the central screw rod is sleeved with a bearing A and a bearing B and is in interference fit with the inner walls of the bearing A and the bearing B;
the bearing A and the bearing B are fixed on the inner wall of the shell;
the central screw rod is sleeved with a sliding nut in a threaded manner, and the central screw rod is matched with the sliding nut to complete threaded transmission connection; the sliding nut is integrally connected to the pressing rod;
the sliding nut is limited on the shell through a plurality of guide screws in a guiding mode.
Further scheme: the central screw rod is sleeved with an upper gland, and the upper gland is detachably fixed on the shell through a plurality of screws A;
the bolt A is an M inner hexagonal socket head bolt.
In the invention: the central screw rod is sleeved with a handle and is limited by a limiting back cap;
the handle is provided with a plurality of limiting grooves A, and the central screw rod is provided with a limiting groove B in a matching mode.
In the invention: the connecting flange is detachably arranged on the shell through a plurality of screws B, wherein the screws B are M hexagon socket head cap screws.
In the invention: the sealing structure comprises a sealing rubber ring and a sealing ring.
In the invention: the flashboard rubber core is connected to the pressing rod through the flashboard framework, the rectangular groove is formed in the flashboard framework and used for limiting the pressing rod, and the flashboard framework is connected in a rotating mode.
In the invention: the connecting flange and the small four-way joint of the wellhead are connected through a clamping hoop and are arranged in a sealing mode through a sealing steel ring.
The invention relates to a pressurized rotary pumping blowout preventer, which comprises a central screw rod rotationally connected to a shell; the central screw is in power transmission connection with a pressing rod, the pressing rod is movably sleeved outside the central screw, and the central screw limited and rotated by the shell is used for lifting and adjusting the pressing rod through power transmission matching; the device also comprises a connecting flange; the connecting flange is detachably arranged on the shell, and the pressing rod penetrates through the shell to be inserted into the connecting flange and is sealed through a plurality of sealing structures; the connecting flange is connected with a small wellhead four-way at one side far away from the shell and is arranged in a sealing manner, and a sucker rod polish rod is arranged in the small wellhead four-way; the connecting flange is movably inserted with a flashboard rubber core in a penetrating way, the flashboard rubber core is connected to the pressing rod, the flashboard rubber core is driven to abut against the polish rod of the sucker rod in the descending process of the pressing rod, and a sealing groove formed in the flashboard rubber core is used for forming sealing with the polish rod of the sucker rod, so that the pressure between the upper part and the lower part of the small four-way joint of the well head is sealed; the compressing rod penetrates into the connecting flange to be sealed through a multi-sealing structure, the small four-way joint of the well mouth is connected and sealed on the connecting flange, after the compressing rod is adjusted in a lifting mode through power transmission fit by utilizing a central lead screw of limiting rotation of a shell, the compressing rod drives a flashboard rubber core to abut against a sucker rod polished rod in the pressing process, sealing grooves formed in the flashboard rubber core are sealed with the sucker rod polished rod, the pressure between the upper portion and the lower portion of the small four-way joint of the well mouth is sealed, the well mouth is free of pressure, operation under the pressure is conducted on the well mouth, sealing grooves formed in the specific flashboard rubber core and the sucker rod polished rod can be used for detachably sealing the sucker rod polished rod, and.
Drawings
Fig. 1 is a schematic structural view of the pressurized rotary pumping blowout preventer according to the present invention.
Fig. 2 is a schematic structural view of the handle of fig. 1.
In the figure: 1-back cap, 2-handle, 3-screw A, 4-upper gland, 5-bearing A, 6-bearing B, 7-upper shell, 8-guide screw, 9-sliding nut, 10-pressing rod, 11-central screw, 12-guide sleeve, 13-lower shell, 14-screw B, 15-sealing rubber ring, 16-sealing ring, 17-connecting flange, 18-gate plate framework, 19-gate plate rubber core, 20-sealing steel ring, 21-clamp, 22-small well head four-way, 23-sucker rod polish rod, 31-guide groove, 32-rectangular groove, 33-sealing groove and 34-limiting groove A.
Detailed Description
The invention aims to provide a pressurized rotary pumping blowout preventer, which aims to solve the problems that the existing mode adopted by an oil field is to disassemble a wellhead after the wellhead is depressurized to be pressureless, the mode is safe and reliable, but the mode has obvious defects, and the wellhead depressurization mode has long depressurization cycle, so that the construction progress is influenced and the yield is influenced; in order to realize the purpose, the following technical scheme is specifically provided:
in the embodiment of the invention, as shown in fig. 1, the pressurized rotary pumping blowout preventer comprises a central screw rod 11 which is rotatably connected to a shell; the central screw 11 is in power transmission connection with a pressing rod 10, the pressing rod 10 is movably sleeved outside the central screw 11, and the central screw 11 which rotates in a limiting mode through the shell is used for adjusting the lifting of the pressing rod 10 through power transmission matching; the device further comprises a connecting flange 17; the connecting flange 17 is detachably arranged on the shell, and the pressing rod 10 penetrates through the shell to be inserted into the connecting flange 17 and is sealed through a plurality of sealing structures; the connecting flange 17 is connected with a small wellhead four-way 22 at one side far away from the shell and is arranged in a sealing way, and a sucker rod polish rod 23 is arranged in the small wellhead four-way 22; the inside activity interlude of flange 17 has flashboard rubber core 19, and flashboard rubber core 19 is connected on compressing tightly pole 10, drives flashboard rubber core 19 and supports and lean on sucker rod polished rod 23 in compressing tightly the decline in-process of pole 10 to utilize the last seal groove 33 of seting up of flashboard rubber core 19 to form sealedly with sucker rod polished rod 23, seal the pressure between the top and bottom of little cross 22 of well head.
In the embodiment of the invention, a pressing rod 10 penetrates into a connecting flange 17 to be sealed through a plurality of sealing structures, a small wellhead four-way 22 is connected and sealed on the connecting flange 17, after the pressing rod 10 is lifted and adjusted through power transmission matching by utilizing a central lead screw 11 which rotates in a limiting way of a shell, a gate plate rubber core 19 is driven to abut against a sucker rod polished rod 23 in the pressing process of the pressing rod 10, a sealing groove 33 formed in the gate plate rubber core 19 is utilized to form sealing with the sucker rod polished rod 23, the pressure between the upper part and the lower part of the small wellhead four-way 22 is sealed, the wellhead non-pressure is realized, the wellhead operation under pressure is carried out, the sucker rod 23 is detachably sealed by the sealing groove 33 formed in the specific gate plate rubber core 19 and the sucker rod 23, and the operation of rotating the sucker rod polished rod.
In the embodiment of the present invention, as shown in fig. 1, the housing includes an upper housing 7 and a lower housing 13, a guide sleeve 12 is disposed between the upper housing 7 and the lower housing 13, and a plurality of guide grooves 31 are disposed on the guide sleeve 12; wherein, the guide sleeve 12 is connected with the upper shell 7 and/or the lower shell 13 in an integrated manner; in a further scheme, the guide sleeve 12 and the upper shell 7 and/or the lower shell 13 are integrally connected through welding.
In the embodiment of the invention, as shown in fig. 1, the power transmission connection is a threaded transmission connection, the compression rod 10 is movably sleeved outside the central screw rod 11, and the central screw rod 11 which is limited and rotated by the shell is used for lifting and adjusting the compression rod 10 through threaded transmission matching; in a further scheme, a bearing A5 and a bearing B6 are sleeved on the central lead screw 11 and are in interference fit with the inner walls of the bearing A5 and the bearing B6; the bearing A5 and the bearing B6 are fixed on the inner wall of the shell; the central screw rod 11 is sleeved with the sliding nut 9 in a threaded manner, and the central screw rod 11 is matched with the sliding nut 9 to complete threaded transmission connection; wherein, the sliding nut 9 is integrally connected with the pressing rod 10; the sliding nut 9 is guided and limited in a guide sleeve 12 arranged on the shell through a plurality of guide screws 8. Preferably, the central screw 11 is sleeved with an upper gland 4, and the upper gland 4 is detachably fixed on the shell through a plurality of screws a 3; wherein the screw A3 is an M16 socket head cap screw.
In the embodiment of the invention, as shown in fig. 1 and 2, a handle 2 is sleeved on a central screw rod 11, and the central screw rod is limited by a limiting back cap 1; the handle 2 is provided with a plurality of limiting grooves A34, and the central screw 11 is provided with a limiting groove B in a matching manner.
In the embodiment of the present invention, as shown in fig. 1, the connecting flange 17 is detachably mounted on the housing by a plurality of screws B14, wherein the screws B14 are M16 socket head cap screws; the sealing structure comprises a sealing rubber ring 15 and a sealing ring 16; the gate plate rubber core 19 is connected to the pressing rod 10 through the gate plate framework 18, and the gate plate framework 18 is provided with a rectangular groove 32 for limiting the pressing rod 10 to complete rotary connection; the connecting flange 17 and the small four-way joint 22 of the wellhead are connected through a hoop 21 and are arranged in a sealing mode through a sealing steel ring 20.
The invention relates to a pressurized rotary pumping blowout preventer, which comprises a central screw rod 11 rotationally connected to a shell; the central screw 11 is in power transmission connection with a pressing rod 10, the pressing rod 10 is movably sleeved outside the central screw 11, and the central screw 11 which rotates in a limiting mode through the shell is used for adjusting the lifting of the pressing rod 10 through power transmission matching; the device further comprises a connecting flange 17; the connecting flange 17 is detachably arranged on the shell, and the pressing rod 10 penetrates through the shell to be inserted into the connecting flange 17 and is sealed through a plurality of sealing structures; the connecting flange 17 is connected with a small wellhead four-way 22 at one side far away from the shell and is arranged in a sealing way, and a sucker rod polish rod 23 is arranged in the small wellhead four-way 22; the connecting flange 17 is movably inserted with a flashboard rubber core 19, the flashboard rubber core 19 is connected to the pressing rod 10, the flashboard rubber core 19 is driven to abut against the sucker rod polished rod 23 in the descending process of the pressing rod 10, and a sealing groove 33 formed in the flashboard rubber core 19 is used for forming sealing with the sucker rod polished rod 23, so that the pressure between the upper part and the lower part of the small well head four-way 22 is sealed; the pressing rod 10 penetrates into the connecting flange 17 to be sealed through a plurality of sealing structures, the small wellhead four-way 22 is connected and sealed on the connecting flange 17, after the pressing rod 10 is adjusted in a lifting mode through power transmission matching by means of the central lead screw 11 of limiting rotation of the shell, the gate plate rubber core 19 is driven to abut against the sucker rod polish rod 23 in the pressing process of the pressing rod 10, a sealing groove 33 formed in the gate plate rubber core 19 is used for sealing with the sucker rod polish rod 23, the pressure between the upper portion and the lower portion of the small wellhead four-way 22 is sealed, wellhead non-pressure is achieved, wellhead operation under pressure is conducted, the sealing groove 33 formed in the specific gate plate rubber core 19 and the sucker rod polish rod 23 can be detachably sealed, and operation of rotating the sucker rod polish rod 23 under pressure is achieved.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A pressurized rotary pumping blowout preventer, which is characterized in that,
comprises a central screw rod which is rotationally connected with a shell;
the central screw is in power transmission connection with a pressing rod, the pressing rod is movably sleeved outside the central screw, and the central screw limited and rotated by the shell is used for lifting and adjusting the pressing rod through power transmission matching;
the device also comprises a connecting flange;
the connecting flange is detachably arranged on the shell, and the pressing rod penetrates through the shell to be inserted into the connecting flange and is sealed through a plurality of sealing structures;
the connecting flange is connected with a small wellhead four-way at one side far away from the shell and is arranged in a sealing manner, and a sucker rod polish rod is arranged in the small wellhead four-way;
the inside activity interlude of flange has flashboard rubber core, and flashboard rubber core connects on compressing tightly the pole, drives flashboard rubber core and supports and lean on the sucker rod polished rod at compressing tightly the pole decline in-process to utilize the last seal groove of seting up of flashboard rubber core and sucker rod polished rod formation sealed, seal the pressure between about the little cross of well head.
2. The blowout preventer according to claim 1, wherein the rotary pumping unit comprises a first pump unit,
the shell comprises an upper shell and a lower shell, a guide sleeve is arranged between the upper shell and the lower shell, and a plurality of guide grooves are formed in the guide sleeve;
wherein, the uide bushing is connected as an organic whole with last casing and/or lower casing.
3. The blowout preventer according to claim 2, wherein the guide sleeve is integrally connected to the upper casing and/or the lower casing by welding.
4. The blowout preventer according to claim 1, wherein the power transmission connection is a threaded transmission connection, the hold-down rod is movably sleeved outside the central screw, and the hold-down rod is adjusted to be lifted by the threaded transmission fit of the central screw which is limited to rotate by the housing.
5. The blowout preventer according to claim 4, wherein the rotary pumping unit comprises a first pump unit,
the central screw rod is sleeved with a bearing A and a bearing B and is in interference fit with the inner walls of the bearing A and the bearing B;
the bearing A and the bearing B are fixed on the inner wall of the shell;
the central screw rod is sleeved with a sliding nut in a threaded manner, and the central screw rod is matched with the sliding nut to complete threaded transmission connection; the sliding nut is integrally connected to the pressing rod;
the sliding nut is limited on the shell through a plurality of guide screws in a guiding mode.
6. The blowout preventer according to claim 5, wherein the central screw is sleeved with an upper gland, and the upper gland is detachably fixed to the housing by a plurality of screws A.
7. The blowout preventer according to claim 1, wherein the rotary pumping unit comprises a first pump unit,
the central screw rod is sleeved with a handle and is limited by a limiting back cap;
the handle is provided with a plurality of limiting grooves A, and the central screw rod is provided with a limiting groove B in a matching mode.
8. The blowout preventer of claim 1, wherein the sealing structure comprises a sealing rubber ring and a sealing ring.
9. The blowout preventer according to claim 1, wherein the rubber core of the gate plate is connected to the hold-down rod through a gate plate framework, and the gate plate framework is provided with a rectangular groove for limiting the hold-down rod, thereby completing the rotational connection.
10. The blowout preventer according to claim 1, wherein the connecting flange and the wellhead small cross are connected by a clamp and are sealed by a sealing steel ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010557310.9A CN111636844A (en) | 2020-06-18 | 2020-06-18 | Pressure rotary pumping blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010557310.9A CN111636844A (en) | 2020-06-18 | 2020-06-18 | Pressure rotary pumping blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111636844A true CN111636844A (en) | 2020-09-08 |
Family
ID=72326907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010557310.9A Pending CN111636844A (en) | 2020-06-18 | 2020-06-18 | Pressure rotary pumping blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111636844A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113027349A (en) * | 2021-04-29 | 2021-06-25 | 盐城市大冈石油工具厂有限责任公司 | Multifunctional polish rod converter |
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| CN113027349A (en) * | 2021-04-29 | 2021-06-25 | 盐城市大冈石油工具厂有限责任公司 | Multifunctional polish rod converter |
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Application publication date: 20200908 |