CN2403892Y - Diameter-variable rubber plug - Google Patents
Diameter-variable rubber plug Download PDFInfo
- Publication number
- CN2403892Y CN2403892Y CN 99250673 CN99250673U CN2403892Y CN 2403892 Y CN2403892 Y CN 2403892Y CN 99250673 CN99250673 CN 99250673 CN 99250673 U CN99250673 U CN 99250673U CN 2403892 Y CN2403892 Y CN 2403892Y
- Authority
- CN
- China
- Prior art keywords
- plug
- self
- central tube
- rubber plug
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims description 15
- 238000005987 sulfurization reaction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 230000008685 targeting Effects 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000002775 capsule Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 206010024453 Ligament sprain Diseases 0.000 description 1
- 208000010040 Sprains and Strains Diseases 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a reducing plug is a device that uses in the construction of oil gas well tail pipe well cementation. The outer diameter of the drill stem can change in a larger range along with the change of the inner diameter of the drill stem, so that the cement paste and the replacement fluid are effectively separated under the condition of ensuring that the rubber plug smoothly reaches the tail pipe, and the possibility of residual cement plug in the tail pipe in tail pipe cementing is eliminated. The rubber plug comprises an auxiliary rubber plug 1, a central tube 2, a self-sealing main rubber plug 3, a metal elastic sheet 4, a spherical guide head 5 and the like. Compared with the prior art, the down-flow type sealing device has the advantages of smooth down-flow and reliable sealing. The rubber plug can improve the well cementation quality, simplify the construction process, shorten the working period and reduce the cost.
Description
The utility model relates to the Reducing rubber plug that uses in a kind of oily vapour well drilling liner cementing construction, belongs to the drilling tool class.
Plug plays in well cementing operation isolates for putting liquid and effects such as cement paste and bruising.The plug that uses in the prior art has top cement plug, bottom plug, self-locking plug and twin-stage injecting glue plug etc. multiple.These plugs use in the drilling liner cementing construction and have a common shortcoming, are exactly that the external diameter scope that can change is too little.Because the tubing string internal diameter of drilling liner cementing operation is widely different, the plug that needs to use must change the bigger variation of generation with the internal diameter of tubing string, therefore plug of the prior art can't satisfy the requirement of drilling liner cementing operation, particularly incompatiblely uses sending in the tubing string of being made up of drill string.Adopt large diameter plug, it is stifled to sprain at the minor diameter place easily, adopts the minor diameter plug, can not scrape the cement paste on the tube wall to the greatest extent again, guarantee for put in the process cement paste with for the reliable isolation of putting liquid, influence cementing quality.
It is a kind of in the drilling liner cementing construction that the purpose of this utility model is to provide, and its external diameter can adapt to the novel Reducing rubber plug of drill string internal diameter varies automatically in a big way.This plug can pass through drill string smoothly, although can scrape the cement paste on the wall again, guarantees for the reliable isolation of putting liquid and cement paste.
Reducing rubber plug of the present utility model mainly comprises main plug, flexure strip, central tube, guide head and secondary plug etc.Central tube is a steel tubular part, and the two ends car has screw thread, its function to have two, the one, and as the installation parent tube, the 2nd, as the pressure transmission conduit.For pressure transmission, its underpart is drilled with pressure transmission hole.That guide head is made is streamlined, the form of circular arc type or big chamfering, to reduce descending resistance, prevents to be hampered midway.Guide head is used the lower end that is threaded in central tube.Main plug is installed above the guide head, and main plug is made by elastomeric material, has a plurality of fins, but the shape of its fin is made the hydraulic starting self-sealing structure with hydraulic pressure angle of wedge.Adopt between main plug and the guide head and be threaded or bonding.In the main plug flexure strip is housed, flexure strip has high-intensity elastomeric material by metallic elastic material or other to be made, fit or sulfuration at the plug inner chamber, and in inner chamber, form the hydraulic chamber that can transmit pressure.Central tube is installed secondary plug topmost, and secondary plug is made by metal-cored, rubber and cord sulfuration, has at least more than one fin.
The reducing of Reducing rubber plug is realized by three kinds of modes.The one, the elasticity of dependence capsule self, the 2nd, rely on steel disc elasticity, the 3rd, the hydraulic pressure of dependence hydraulic pressure capsule.When Reducing rubber plug from major diameter when minor diameter is migrated because the effect of plug bottom hydraulic pressure tractive force, the outer skirt section of capsule is undergauge at first, after acquiring a certain degree, capsule extruding steel flexure strip is discharged the liquid in the capsule simultaneously, and the plug external diameter is further dwindled; When Reducing rubber plug from minor diameter when the major diameter place migrates, capsule expands under the effect of hydraulic pressure and steel flexure strip elastic force and becomes big, restores to the original state until the plug skirt section.
The sealing problem of Reducing rubber plug is realized by three kinds of modes: the drilling rod inwall is close in the skirt section of self-sealing plug automatically under the hydraulic action of top; Capsule is at the elastic force of elastic rubber, steel flexure strip and act under the action of hydraulic force of inside capsule wall, makes plug be close to the drilling rod inwall from start to finish; The precompression that the interference fit of plug external diameter forms.The acting in conjunction of above-mentioned three kinds of sealing means has guaranteed the reliable of plug and drilling rod inwall and effectively sealing.
It is pusher plug-type for the top base pressure that the migration mode of Reducing rubber plug is changed simple in the past roof pressure in the drilling rod, and promptly plug is under hydraulic action, and a part acts on the annulus area at plug top, to plug generation thrust; Another part acts on the circular area of plug bottom and produces pulling force, it is descending to drag plug, it is descending that top thrust promotes plug on the one hand, on the other hand the plug skirt section is produced sealing force, act on the pulling force of plug bottom, then when affecting plug descending, the elongation of drive plug, diameter shrinks, and it is stifled to avoid plug to be suppressed when the minor diameter place migrates by major diameter, guarantees plug migration smoothly in drilling rod.
Reducing rubber plug of the present utility model compared with prior art has following advantage and effect:
1. its external diameter can adapt to the variation of drill string internal diameter at work automatically, can guarantee that plug smoothly by drill string, can guarantee the positiver sealing between plug and the drilling rod inwall again.
2. realized for put in the process in the drilling rod cement paste with for the isolation fully of putting liquid, be used with the hollow plug of pre-installing in the tail pipe, make in the tail pipe after the well cementation the not residual water bod, improved cementing quality, simplify construction technology, shortened construction period, reduced drilling cost.
3. to change hydraulic pressure into by traditional push mode plug-type for the stressed down line mode of plug, prevented that plug from taking place in the dead fault of minor diameter place fraud.
Accompanying drawing 1 is the structural representation of Reducing rubber plug
1 given embodiment is further described the utility model below in conjunction with accompanying drawing.
Reducing rubber plug among the embodiment is formed by paying plug 1, central tube 2, self-sealing master plug 3, metallic elastic sheet 4 and spherical guide head 5 etc.The top of plug is secondary plug 1, the secondary plug 1 usefulness central tube 2 that is being threaded, and central tube 2 is outer to be self-sealing master plug 3, and self-sealing master plug 3 inner chamber sulfuration adhesions have metallic elastic sheet 4.Self-sealing master plug 3 is formed a main plug assembly with metallic elastic sheet 4.This assembly link to each other with guide head 5 usefulness screw threads and and central tube 2 between leave the space of transmitting pressure.The centre of guide head 5 is shaped on internal thread, links to each other with the external screw thread of central tube 2 lower ends.The utility model cementing plug with commonly used in actual use is the same, be pre-installed on before the cementing in the cementing head, behind the cemented up, moulding plug, notes, build the pressure and cut off the pin of fixation hollow plug behind the hollow plug of plug arrival tail pipe top arrangement for putting liquid, come downwards to the block ring of tail pipe bottom at last with hollow plug, bruising finishes for the process of putting, and carries out follow-up work.
Claims (3)
1. the Reducing rubber plug that uses in the oil gas well drilling liner cementing, comprise hermetic unit and targeting part, it is characterized in that: hermetic unit is made up of the secondary plug (1) and the self-sealing master plug (3) that are installed on the central tube (2), self-sealing master plug (3) has a plurality of fins, but the shape of fin is made the hydraulic starting self-sealing structure with hydraulic pressure angle of wedge, secondary plug (1) is made by metal-cored, rubber and cord sulfuration, has at least more than one fin.
2. Reducing rubber plug according to claim 1, it is characterized in that: flexure strip (4) is housed in the self-sealing master plug (3), flexure strip (4) has high-intensity elastomeric material by metal material or other and makes, the adhering sulfuration is at the plug inner chamber, and in inner chamber, forming the hydraulic chamber that can transmit pressure, the pressure transmission hole that its pressure is opened by central tube (2) imports into.
3. Reducing rubber plug according to claim 2, it is characterized in that: this plug is by paying plug (1), central tube (2), self-sealing master plug (3), metallic elastic sheet (4) and spherical guide head (5) are formed, the top of plug is secondary plug (1), secondary plug (1) is connected on the central tube (2), central tube (2) is outer to be self-sealing master plug (3), self-styled main plug (3) inner chamber sulphur closes and is bonded with metallic elastic sheet (4), they link to each other with guide head (5), and and central tube (2) between leave the space of transmitting pressure, guide head (5) is connected the lower end of central tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250673 CN2403892Y (en) | 1999-12-16 | 1999-12-16 | Diameter-variable rubber plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99250673 CN2403892Y (en) | 1999-12-16 | 1999-12-16 | Diameter-variable rubber plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2403892Y true CN2403892Y (en) | 2000-11-01 |
Family
ID=34035365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99250673 Expired - Fee Related CN2403892Y (en) | 1999-12-16 | 1999-12-16 | Diameter-variable rubber plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2403892Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522878A (en) * | 2016-12-08 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Anti-seizing rubber plug |
| CN106555563A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Casing recess cleans well cementing impact pressure plug |
| CN107605426A (en) * | 2017-08-31 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of double containment bruising device |
| CN108036685A (en) * | 2017-12-11 | 2018-05-15 | 中铁广州建设有限公司 | A kind of rock multiple-row blasting device and its method for blocking dry ice fracturing rock blasthole |
| CN108179991A (en) * | 2017-12-18 | 2018-06-19 | 中国石油天然气股份有限公司 | Bridge plug capable of being salvaged after fracturing |
| CN110630216A (en) * | 2019-10-15 | 2019-12-31 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Drill rod mud scraper and using method thereof |
| CN112845425A (en) * | 2020-12-24 | 2021-05-28 | 北京大地高科地质勘查有限公司 | Dynamic sealing rubber plug device for reinforcing coal seam roof |
| CN113309487A (en) * | 2021-05-24 | 2021-08-27 | 中煤科工集团西安研究院有限公司 | Recoverable fixed-point grouting device and method for directional long drilling hole in underground coal mine |
-
1999
- 1999-12-16 CN CN 99250673 patent/CN2403892Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106555563A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Casing recess cleans well cementing impact pressure plug |
| CN106555563B (en) * | 2015-09-24 | 2019-09-20 | 中国石油化工股份有限公司 | Casing recess cleans well cementing impact pressure rubber plug |
| CN106522878A (en) * | 2016-12-08 | 2017-03-22 | 中国石油集团西部钻探工程有限公司 | Anti-seizing rubber plug |
| CN107605426A (en) * | 2017-08-31 | 2018-01-19 | 中国石油集团渤海钻探工程有限公司 | A kind of double containment bruising device |
| CN108036685A (en) * | 2017-12-11 | 2018-05-15 | 中铁广州建设有限公司 | A kind of rock multiple-row blasting device and its method for blocking dry ice fracturing rock blasthole |
| CN108179991A (en) * | 2017-12-18 | 2018-06-19 | 中国石油天然气股份有限公司 | Bridge plug capable of being salvaged after fracturing |
| CN108179991B (en) * | 2017-12-18 | 2020-08-07 | 中国石油天然气股份有限公司 | Bridge plug capable of being salvaged after fracturing |
| CN110630216A (en) * | 2019-10-15 | 2019-12-31 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Drill rod mud scraper and using method thereof |
| CN112845425A (en) * | 2020-12-24 | 2021-05-28 | 北京大地高科地质勘查有限公司 | Dynamic sealing rubber plug device for reinforcing coal seam roof |
| CN112845425B (en) * | 2020-12-24 | 2022-07-22 | 北京大地高科地质勘查有限公司 | Dynamic sealing rubber plug device for reinforcing coal seam roof |
| CN113309487A (en) * | 2021-05-24 | 2021-08-27 | 中煤科工集团西安研究院有限公司 | Recoverable fixed-point grouting device and method for directional long drilling hole in underground coal mine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2403892Y (en) | Diameter-variable rubber plug | |
| CN201991473U (en) | Casing suspension device for well repair | |
| CN204436320U (en) | A kind of hydraulic releasing big orifice packer | |
| CN107558946B (en) | A kind of packer | |
| CN202249929U (en) | Combined self-locking reducing rubber plug for casing | |
| CN201062505Y (en) | Hollow suspension sub-releasing axle plug | |
| CN200968198Y (en) | Telescopic compression sealing grouting device | |
| CN104481453B (en) | Combined self-locking type reducing rubber plug | |
| CN209339883U (en) | Hydraulic pressure lasts restriction type flow controller deblocking instrument of being of a specified duration | |
| CN108316885B (en) | A kind of bridge plug with combination packing element | |
| CN2274688Y (en) | Core catcher for rope coring tool | |
| CN201593393U (en) | Automatic expansion type external pipe packer | |
| CN204782834U (en) | Novel continuous outside of tubes slips connector | |
| CN2740771Y (en) | Self-pulping arrow back pressure valve | |
| CN200964823Y (en) | Liner well-cementing hollow rubber plug | |
| CN208858321U (en) | Change lower completion tubing string | |
| CN203230365U (en) | Anchoring device in oil pipe | |
| CN208441803U (en) | Low power unseals long packing element type well packer capable of flushing well | |
| CN206625814U (en) | It can unseal, unjaming packing formula extension hanger | |
| CN2736529Y (en) | Sand proof packing tool | |
| CN2451722Y (en) | Hydraulic expand tube type casing pipe subsidiary tool | |
| CN2929156Y (en) | Oil-water well casing tandem connector | |
| CN210564458U (en) | Sealing rubber cylinder for packer | |
| CN2668822Y (en) | Side-drilling windowing whipstock | |
| CN2675843Y (en) | Centralizing type adjustable tie-back sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |