CN113846987A - Multiple sealing method and device for gas production wellhead - Google Patents
Multiple sealing method and device for gas production wellhead Download PDFInfo
- Publication number
- CN113846987A CN113846987A CN202111203421.0A CN202111203421A CN113846987A CN 113846987 A CN113846987 A CN 113846987A CN 202111203421 A CN202111203421 A CN 202111203421A CN 113846987 A CN113846987 A CN 113846987A
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- Prior art keywords
- sealing
- pressure disk
- packing
- wellhead
- gas production
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- 238000007789 sealing Methods 0.000 title claims abstract description 153
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012856 packing Methods 0.000 claims abstract description 43
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 11
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 11
- 241001330002 Bambuseae Species 0.000 claims description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 11
- 239000011425 bamboo Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims 5
- 235000014121 butter Nutrition 0.000 abstract description 2
- 230000007850 degeneration Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 30
- 239000003345 natural gas Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 9
- 238000003825 pressing Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000002035 prolonged 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
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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 relates to the technical field of gas production well mouths, in particular to a multiple sealing method and a multiple sealing device for a gas production well mouth; backup pad and sealing cylinder fixed connection, the packing is dismantled with the backup pad and is connected, the pressure disk is dismantled with sealing cylinder and is connected, first sealing washer and pressure disk fixed connection, defeated oil pipe and pressure disk intercommunication, the sealing plug is dismantled with defeated oil pipe and is connected, the dead lever rotates with the pressure disk to be connected, the pressure disk is connected with sealing cylinder and is formed a sealed chamber and seal the well head, packing in the sealing cylinder seals the well head, it supports the packing to rotate the dead lever, it is not hard up to prevent to gather for a long time and arouse the packing, the gas tightness between first sealing washer reinforcing pressure disk and the sealing cylinder, defeated oil pipe channels into the butter and acts on the gas production pole, prevent that the gas production pole wearing and tearing packing from influencing the gas tightness of sealing cylinder, when defeated oil pipe does not use, block up through the sealing plug, it is not hard up to solve current sealing device, lead to the problem that gas leakage appears in the sealed degeneration.
Description
Technical Field
The invention relates to the technical field of gas production well mouths, in particular to a multiple sealing method and device for a gas production well mouth.
Background
In the prior art, with the sharp increase of the energy demand of clean and environment protection, the natural gas exploitation technology is more and more widely used, and the gas production wellhead device is more and more widely used.
At present, the process and the production time of natural gas development are continuously prolonged, the workload of multiple process measures of the natural gas is increased day by day, a gas production wellhead sealing device is important equipment for ensuring the normal production of the natural gas under some working conditions, however, the existing gas production wellhead sealing device is easy to loosen after being used for too long time, and the situation of gas leakage is caused due to the fact that the sealing performance of the device is poor.
Disclosure of Invention
The invention aims to provide a multiple sealing method and device for a gas production wellhead, and aims to solve the problem that the existing sealing device is loosened, so that the sealing performance is poor and gas leakage occurs.
In order to achieve the above object, in a first aspect, the present invention provides a gas production wellhead multiple sealing device, including a sealing assembly and a connecting assembly, where the sealing assembly includes a sealing cylinder, a packing, a support plate, an oil pipe, a first sealing ring, a sealing plug, a pressure plate and a fixing rod, the support plate is fixedly connected with the sealing cylinder and located in the groove, the packing is detachably connected with the support plate and located at one side of the support plate, the pressure plate is detachably connected with the sealing cylinder and located at one side of the sealing cylinder far from the support plate, the first sealing ring is fixedly connected with the pressure plate and located at one side of the pressure plate close to the sealing cylinder, the oil pipe is communicated with the pressure plate and penetrates through the pressure plate, the sealing plug is detachably connected with the oil pipe and located at one side of the oil pipe far from the pressure plate, the fixing rod is rotatably connected with the pressure plate, and run through the pressure disk, seal assembly prevents revealing of natural gas to the multiple seal of well head, coupling assembling will seal assembly and well head are fixed.
Wherein, coupling assembling includes mounting flange, well head flange and gim peg, mounting flange with a sealed section of thick bamboo fixed connection, and be located keep away from pressure disk one side, the well head flange with mounting flange dismantles the connection, and is located mounting flange keeps away from sealed section of thick bamboo one side, the gim peg respectively with mounting flange with well head flange dismantles the connection, and runs through mounting flange with the well head flange, through mounting flange with the well head flange is connected seal assembly and well head, the gim peg will mounting flange with well head flange joint is fixed.
The fixing rod comprises a screw and a pressing block, the screw is connected with the pressure plate in a rotating mode and penetrates through the pressure plate, the pressing block is fixedly connected with the screw and located on one side of the packing, the screw is arranged on the pressure plate in a rotating mode, the pressing block moves downwards to abut against the packing, and the packing is prevented from loosening.
The sealing assembly further comprises a second sealing ring, the second sealing ring is fixedly connected with the oil delivery pipe and located on one side of the sealing barrel, and natural gas is prevented from leaking from the oil delivery pipe and the pressure plate communication position due to the arrangement of the second sealing ring.
Wherein, seal assembly still includes metal seal ring, metal seal ring with pressure disk fixed connection just is located and keeps away from sealed section of thick bamboo one side, metal seal ring's setting prevents that the natural gas from following pressure disk and gas production pole junction are revealed.
The sealing assembly further comprises a rotating head, the rotating head is fixedly connected with the fixing rod and located on one side of the sealing barrel, the fixing rod is kept away from the sealing barrel, and the rotating head is convenient to rotate and supports the packing.
The sealing assembly further comprises a gasket, the gasket is fixedly connected with the fixed flange and located far away from one side of the sealing barrel, the gasket prevents natural gas from leaking between the fixed flange and the wellhead flange, and the sealing effect on a wellhead is further enhanced.
The sealing assembly further comprises a clamping jaw, the clamping jaw is connected with the sealing barrel in a rotating mode and located around the sealing barrel, and the clamping jaw is arranged to strengthen the fixing effect of the pressure plate and the sealing barrel.
In a second aspect, a gas production wellhead multiple sealing method applies the gas production wellhead multiple sealing device of the first aspect, and comprises the following steps,
the sealing cylinder penetrates through a gas production rod and is placed on a wellhead, and a fixing bolt is connected with a wellhead flange and a fixing flange;
packing is put into a sealing barrel in sequence, a pressure plate penetrates through a gas production rod to be connected with the sealing barrel, and a fixed rod is rotated to abut against the packing to complete the installation of the sealing device.
The gas production wellhead multiple sealing device comprises a sealing assembly, a connecting assembly and a fixing rod, wherein the sealing assembly is used for sealing a wellhead in multiple ways and preventing natural gas from leaking, the connecting assembly is used for fixing the sealing assembly and the wellhead, the sealing assembly is connected with a pressure plate through a sealing cylinder to form a sealing ring so as to seal the wellhead, the supporting plate provides supporting and mounting conditions for a packing, the wellhead is sealed through the packing, the fixing rod is abutted against the packing so as to prevent the packing from loosening caused by long-time natural gas collection of a gas production rod, so that the sealing effect of the packing on the wellhead is influenced, the first sealing ring is arranged to enhance the air tightness of the pressure plate and the sealing cylinder and simultaneously play a sealing role in sealing the wellhead, the oil pipeline is blocked, and the sealing plug is removed after the gas production rod produces gas for a period of time, through defeated oil pipe down leading-in butter in the pressure disk to on acting on the gas production pole, prevent the wearing and tearing of gas production pole the packing influences the sealed effect of packing to the well head is solved current sealing device and is become flexible, leads to the problem that gas leakage appears in the leakproofness variation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a gas production wellhead multiple seal arrangement provided by the present invention;
FIG. 2 is an elevation view of a gas production wellhead multiple seal arrangement provided by the present invention;
FIG. 3 is a side view of a gas production wellhead multiple seal arrangement provided by the present invention;
FIG. 4 is a cross-sectional view taken along plane A-A of FIG. 2;
FIG. 5 is a flow chart of a method of using the multiple sealing apparatus of a gas production wellhead provided by the present invention.
In the figure: 1-sealing component, 2-connecting component, 11-sealing barrel, 12-packing, 13-supporting plate, 14-oil pipeline, 15-first sealing ring, 16-sealing plug, 17-pressure plate, 18-fixing rod, 19-second sealing ring, 21-fixing flange, 22-wellhead flange, 23-fixing bolt, 110-metal sealing ring, 111-rotating head, 112-gasket, 113-clamping jaw, 181-screw rod and 182-pressing block.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 4, the invention provides a multiple sealing device for a gas production wellhead, which comprises a sealing assembly 1 and a connecting assembly 2, wherein the sealing assembly 1 comprises a sealing barrel 11, a packing 12, a supporting plate 13, an oil delivery pipe 14, a first sealing ring 15, a sealing plug 16, a pressure plate 17 and a fixing rod 18, the supporting plate 13 is fixedly connected with the sealing barrel 11 and is positioned at one side of the sealing barrel 11, the packing 12 is detachably connected with the supporting plate 13 and is positioned at one side of the supporting plate 13, the pressure plate 17 is detachably connected with the sealing barrel 11 and is positioned at one side of the sealing barrel 11 far away from the supporting plate 13, the first sealing ring 15 is fixedly connected with the pressure plate 17 and is positioned at one side of the pressure plate 17 close to the sealing barrel 11, the oil delivery pipe 14 is communicated with the pressure plate 17 and penetrates through the pressure plate 17, the sealing plug 16 is detachably connected with the oil delivery pipe 14, and the oil pipeline 14 is far away from one side of the pressure plate 17, and the fixing rod 18 is rotatably connected with the pressure plate 17 and penetrates through the pressure plate 17.
In this embodiment, the sealing assembly 1 performs multiple sealing on a wellhead to prevent leakage of natural gas, the connecting assembly 2 fixes the sealing assembly 1 and the wellhead, the sealing assembly 1 is connected with the pressure plate 17 through the sealing barrel 11 to form a sealing ring to seal the wellhead, wherein the support plate 13 provides support and installation conditions for the packing 12, the wellhead is sealed through the packing 12, the fixing rod 18 supports against the packing 12 to prevent the gas production rod from collecting natural gas for a long time to cause the packing 12 to be loosened, so as to affect the sealing effect of the packing 12 on the wellhead, the first sealing ring 15 is arranged to enhance the airtightness of the pressure plate 17 and the sealing barrel 11, and also has a sealing effect on the wellhead, the oil production pipe 14 is blocked by the sealing plug 16, and after the gas production rod produces gas for a certain time, the sealing plug 16 is taken down, grease is guided into the pressure plate 17 through the oil pipeline 14 and acts on the gas production rod, the gas production rod is prevented from being abraded by the packing 12, the sealing effect of the packing 12 on a wellhead is prevented from being affected, and the problem that the sealing property is poor and air leakage occurs due to looseness of an existing sealing device is solved.
Further, coupling assembling 2 includes mounting flange 21, well head flange 22 and gim peg 23, mounting flange 21 with sealed 11 fixed connection of section of thick bamboo, and be located and keep away from pressure disk 17 one side, well head flange 22 with mounting flange 21 is dismantled and is connected, and is located mounting flange 21 keeps away from sealed 11 one side, gim peg 23 respectively with mounting flange 21 with well head flange 22 is dismantled and is connected, and runs through mounting flange 21 with well head flange 22.
In the present embodiment, the seal cartridge 11 and the wellhead are connected by the fixing flange 21 and the wellhead flange 22, and the fixing bolt 23 connects and fixes the fixing flange 21 and the wellhead flange 22.
Further, the sealing assembly 1 further includes a second sealing ring 19, a metal sealing ring 110, a rotating head 111, a gasket 112 and a jaw 113, the second sealing ring 19 is fixedly connected to the oil delivery pipe 14 and located on one side of the oil delivery pipe 14 close to the sealing barrel 11, the metal sealing ring 110 is fixedly connected to the pressure plate 17 and located on one side far away from the sealing barrel 11, the rotating head 111 is fixedly connected to the fixing rod 18 and located on one side far away from the sealing barrel 11 of the fixing rod 18, the gasket 112 is fixedly connected to the fixing flange 21 and located on one side far away from the sealing barrel 11, the jaw 113 is rotatably connected to the sealing barrel 11 and located around the sealing barrel 11, the fixing rod 18 includes a screw 181 and a pressing block 182, the screw 181 is rotatably connected to the pressure plate 17 and penetrates through the pressure plate 17, the pressing block 182 is fixedly connected to the screw 181, and is located on one side of the screw 181 close to the packing 12.
In this embodiment, the second sealing washer 19 prevents that the natural gas from following defeated oil pipe 14 with pressure disk 17 intercommunication department reveals, metal sealing washer 110 prevents that the natural gas from following pressure disk 17 and gas production pole junction reveal, gasket 112 prevents that the natural gas from following mounting flange 21 with reveal between the wellhead flange 22, rotary head 111 is convenient for rotate dead lever 18 supports packing 12, the setting of jack catch 113 is strengthened right pressure disk 17 with the fixed effect of a sealed section of thick bamboo 11, the screw rod 181 is in rotate on the pressure disk 17, make the briquetting 182 move down support packing 12 prevents packing 12 produces not hard up to the sealed effect of influence to the well head.
Referring to fig. 5, in a second aspect, a method for multiple sealing of a gas production wellhead includes the following steps,
s101, the sealing cylinder 11 penetrates through a gas production rod and is placed on a wellhead, and a fixing bolt 23 is connected with a wellhead flange 22 and a fixing flange 21;
the sealing cylinder 11 is placed on the wellhead through the collecting rod, and the connecting flange and the fixing flange 21 are connected with each other through the fixing bolt 23, so that the sealing cylinder 11 is fixed on the wellhead.
S102, packing 12 are sequentially placed into the sealing barrel 11, the pressure plate 17 penetrates through the gas production rod to be connected with the sealing barrel 11, the fixing rod 18 is rotated to abut against the packing 12, and the sealing device is installed.
The sealing device is characterized in that a plurality of packing 12 are sequentially placed on the supporting plate 13 at the bottom of the sealing barrel 11, the pressure plate 17 penetrates through a gas production rod to be connected with the sealing barrel 11, the clamping jaws 113 are rotated to fix the fixing barrel and the pressure plate 17 to form a sealing cavity to seal a well mouth, the rotating head 111 is held to rotate the screw 181, and the pressing block 182 is pressed against the packing 12 to complete the installation and fixation of the sealing device.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A gas production wellhead multiple sealing device, which is characterized in that,
including seal assembly and coupling assembling, seal assembly includes a sealed section of thick bamboo, packing, backup pad, defeated oil pipe, first sealing washer, sealing plug, pressure disk and dead lever, the backup pad with sealed section of thick bamboo fixed connection just is located sealed section of thick bamboo one side, the packing with the backup pad is dismantled and is connected, and is located backup pad one side, the pressure disk with sealed section of thick bamboo is dismantled and is connected, and is located sealed section of thick bamboo is kept away from backup pad one side, first sealing washer with pressure disk fixed connection, and be located the pressure disk is close to sealed section of thick bamboo one side, defeated oil pipe with the pressure disk intercommunication, and run through the pressure disk, the sealing plug with defeated oil pipe dismantles and connects, and is located defeated oil pipe keeps away from pressure disk one side, the dead lever with the pressure disk rotates to be connected, and runs through the pressure disk.
2. A gas recovery wellhead multiple seal arrangement as claimed in claim 1,
coupling assembling includes mounting flange, well head flange and gim peg, mounting flange with a sealing barrel fixed connection just is located and keeps away from pressure disk one side, the well head flange with mounting flange dismantles the connection, and is located mounting flange keeps away from sealing barrel one side, the gim peg respectively with mounting flange with well head flange dismantles the connection, and runs through mounting flange with the well head flange.
3. A gas recovery wellhead multiple seal arrangement as claimed in claim 1,
the dead lever includes screw rod and briquetting, the screw rod with the pressure disk rotates to be connected, and runs through the pressure disk, the briquetting with screw rod fixed connection, and be located the screw rod is close to packing one side.
4. A gas recovery wellhead multiple seal arrangement as claimed in claim 1,
the sealing assembly further comprises a second sealing ring, and the second sealing ring is fixedly connected with the oil delivery pipe and is located on one side, close to the sealing barrel, of the oil delivery pipe.
5. A gas recovery wellhead multiple seal arrangement as claimed in claim 1,
the sealing assembly further comprises a metal sealing ring, and the metal sealing ring is fixedly connected with the pressure plate and located far away from one side of the sealing cylinder.
6. A gas recovery wellhead multiple seal arrangement as claimed in claim 1,
the sealing assembly further comprises a rotating head, the rotating head is fixedly connected with the fixing rod, and the fixing rod is located on one side, away from the sealing barrel, of the fixing rod.
7. A gas production wellhead multiple sealing method, which is to use the gas production wellhead multiple sealing device as claimed in claim 1, and is characterized by comprising the following steps,
the sealing cylinder penetrates through a gas production rod and is placed on a wellhead, and a fixing bolt is connected with a wellhead flange and a fixing flange;
packing is put into a sealing barrel in sequence, a pressure plate penetrates through a gas production rod to be connected with the sealing barrel, and a fixed rod is rotated to abut against the packing to complete the installation of the sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111203421.0A CN113846987A (en) | 2021-10-15 | 2021-10-15 | Multiple sealing method and device for gas production wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111203421.0A CN113846987A (en) | 2021-10-15 | 2021-10-15 | Multiple sealing method and device for gas production wellhead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113846987A true CN113846987A (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111203421.0A Pending CN113846987A (en) | 2021-10-15 | 2021-10-15 | Multiple sealing method and device for gas production wellhead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113846987A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117052340A (en) * | 2023-08-14 | 2023-11-14 | 山东鼎推岩土工程有限公司 | Anti-splashing device and method for down-the-hole hammer construction |
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|---|---|---|---|---|
| CN2802071Y (en) * | 2005-06-20 | 2006-08-02 | 郑伟 | Auto-regulating anti-blowout packing box and special anti-blowout well shut-in appartus for eccentric wellhead |
| CN208267815U (en) * | 2018-04-03 | 2018-12-21 | 盐城金龙达机械制造有限公司 | A kind of metal sealing device equipped with jackscrew |
| CN212296289U (en) * | 2020-05-28 | 2021-01-05 | 南京伟业机械有限公司 | Polished rod lubricating arrangement for gas production wellhead assembly |
| CN212671669U (en) * | 2020-08-04 | 2021-03-09 | 大庆新顺丰石油科技开发有限公司 | Wellhead double-sealing efficient filling device |
| CN214273589U (en) * | 2021-02-03 | 2021-09-24 | 王爱学 | Polished rod sealing device for oil well pumping unit |
-
2021
- 2021-10-15 CN CN202111203421.0A patent/CN113846987A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2802071Y (en) * | 2005-06-20 | 2006-08-02 | 郑伟 | Auto-regulating anti-blowout packing box and special anti-blowout well shut-in appartus for eccentric wellhead |
| CN208267815U (en) * | 2018-04-03 | 2018-12-21 | 盐城金龙达机械制造有限公司 | A kind of metal sealing device equipped with jackscrew |
| CN212296289U (en) * | 2020-05-28 | 2021-01-05 | 南京伟业机械有限公司 | Polished rod lubricating arrangement for gas production wellhead assembly |
| CN212671669U (en) * | 2020-08-04 | 2021-03-09 | 大庆新顺丰石油科技开发有限公司 | Wellhead double-sealing efficient filling device |
| CN214273589U (en) * | 2021-02-03 | 2021-09-24 | 王爱学 | Polished rod sealing device for oil well pumping unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117052340A (en) * | 2023-08-14 | 2023-11-14 | 山东鼎推岩土工程有限公司 | Anti-splashing device and method for down-the-hole hammer construction |
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Application publication date: 20211228 |