CN206409210U - A kind of cementing plug for the resin inner core that PDC drill bit can be bored - Google Patents
A kind of cementing plug for the resin inner core that PDC drill bit can be bored Download PDFInfo
- Publication number
- CN206409210U CN206409210U CN201621474833.2U CN201621474833U CN206409210U CN 206409210 U CN206409210 U CN 206409210U CN 201621474833 U CN201621474833 U CN 201621474833U CN 206409210 U CN206409210 U CN 206409210U
- Authority
- CN
- China
- Prior art keywords
- inner core
- nitrile rubber
- outer layer
- rubber outer
- drill bit
- 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
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Abstract
A kind of cementing plug for the resin inner core that can be bored the utility model discloses PDC drill bit, including：The inner core that the phenolic resin of corrosion-and high-temp-resistant is made, the middle part of the inner core is provided with the groove being distributed along its length；The outside of the inner core is provided with nitrile rubber outer layer；The outline of the nitrile rubber outer layer is formed with several grooves, and the nitrile rubber outer layer formation closing space embeds inner core；Wherein, it is provided with lubrication layer of paste close to the position of inner core in the nitrile rubber outer layer；Reserve liquid layer is additionally provided with towards away from lubrication layer of paste in the nitrile rubber outer layer, the top of the reserve liquid layer is provided with the seal rubber plug that can be flicked under a high pressure.Plug of the present utility model, corrosion resistance is strong.
Description
Technical field
The utility model is related to device arts of the petroleum gas in Drilling oil, gas well cementing operation, especially relates to
And.
Background technology
In well cementing operation, cement mortar can be influenceed and severe contamination by mud, filter cake in well, cause second interface of cementing the well
Sealing system sealing fails, also unobvious even if extension curing time effect.In addition, drilling company is improves drilling efficiency, no
Only to improve the effect of isolation, scraping, also to improve the drillability of plug.In view of the foregoing, external each company increases glue
The R＆D intensity of plug, and achieve significant effect.
Traditional cementing plug takes aluminium alloy to be inner core, when aluminium alloy runs into acidic liquid or akaline liquid in underground,
Meeting corrosion failure because of chemical reaction, the problems demand is solved.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art and provide the resin that a kind of PDC drill bit can be bored
The well cementation glue of inner core.
To achieve the above object, the utility model provides a kind of well cementation glue for the resin inner core that PDC drill bit can be bored, including：
The inner core that the phenolic resin of corrosion-and high-temp-resistant is made, the middle part of the inner core is provided with what is be distributed along its length
Groove；
The outside of the inner core is provided with nitrile rubber outer layer；The outline of the nitrile rubber outer layer is formed with several ditches
Groove, the nitrile rubber outer layer formation closing space embeds inner core；
Wherein, it is provided with lubrication layer of paste close to the position of inner core in the nitrile rubber outer layer；In the nitrile rubber outer layer
Reserve liquid layer is additionally provided with towards away from lubrication layer of paste, the top of the reserve liquid layer is provided with the seal rubber plug that can be flicked under a high pressure.
It is preferred that, the groove includes conical section, the cylindrical segment below conical section.The groove can be by PDC
Drill bit is stretched into.
It is preferred that, the groove, which is divided equally, is provided with four.
The beneficial effects of the utility model are：A kind of can be bored the utility model discloses PDC drill bit resin inner core is consolidated
Well plug, traditional cementing plug takes aluminium alloy to be inner core, when aluminium alloy runs into acidic liquid or akaline liquid in underground, meeting
The corrosion failure because of chemical reaction.The inner core of this novel rubber plug is made up of the phenolic resin of corrosion-and high-temp-resistant, with outside rubber
It is firm that glue material is combined, and can be bored and remove by PDC drill bit.Elastomeric material is high temperature resistant（Resistance to 160 degree of high temperature）, acid and alkali-resistance, the fourth of oil resistant
Nitrile rubber.In order to increase the operating efficiency of PDC drill bit, when drill bit extend into groove, due to drill bit and groove interference fit, drill bit
The surface of inner core is torn, so that lubrication layer of paste be exposed, due to being filled with cup grease in lubrication layer of paste, drill chuck can be prevented
Firmly, so as to lift drilling efficiency.Further, since drilling when, nitrile rubber outer layer is also under pressure, thus reserve liquid layer also by
Pressure, seal rubber plug is ejected under high pressure, and cleaning fluid is contained with reserve liquid layer, for cleaning drill bit, so as to reach clear to aiding in
The purpose washed, in this way, also extending the working time of drill bit, it is to avoid frequent maintenance drill bit.Plug of the present utility model, corrosion-resistant energy
Power is strong.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the embodiment of the utility model one；
Fig. 2 is the schematic diagram of another embodiment, and Fig. 2 is Fig. 1 further expansion；
Reference：
Inner core 10；Nitrile rubber outer layer 20；Groove 30；Lubricate layer of paste 40；Reserve liquid layer 50；Seal rubber plug 60；Groove 70.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Referring to Figures 1 and 2, the well cementation glue for the resin inner core 10 that a kind of PDC drill bit can be bored, including：Corrosion-and high-temp-resistant
The inner core 10 that phenolic resin is made, the middle part of the inner core 10 is provided with the groove 70 being distributed along its length；The inner core 10
Outside be provided with nitrile rubber outer layer 20；The outline of the nitrile rubber outer layer 20 is formed with several grooves 30, the butyronitrile
The formation of rubber outer 20 closing space embeds inner core 10；Wherein, close to the position of inner core 10 in the nitrile rubber outer layer 20
Provided with lubrication layer of paste 40；In the nitrile rubber outer layer 20 reserve liquid layer 50, the reserve liquid layer are additionally provided with towards away from lubrication layer of paste 40
50 top is provided with the seal rubber plug 60 that can be flicked under a high pressure.It is preferred that, the groove 70 includes conical section, positioned at taper
Cylindrical segment below section.The groove 70 can be stretched into by PDC drill bit.The groove 30, which is divided equally, is provided with four.
In summary, a kind of cementing plug for the resin inner core 10 that can be bored the utility model discloses PDC drill bit, it is traditional
Cementing plug takes aluminium alloy to be inner core 10, when aluminium alloy runs into acidic liquid or akaline liquid in underground, can be because of chemical reaction
And corrosion failure.The inner core 10 of this novel rubber plug is made up of the phenolic resin of corrosion-and high-temp-resistant, with outside elastomeric material knot
It is firm to close, and can be bored and remove by PDC drill bit.Elastomeric material is high temperature resistant（Resistance to 160 degree of high temperature）, acid and alkali-resistance, the nitrile rubber of oil resistant.For
The operating efficiency of increase PDC drill bit, when drill bit extend into groove 70, because drill bit is interference fitted with groove 70, drill bit will in
The surface tear of core 10, so that lubrication layer of paste 40 be exposed, due to being filled with cup grease in lubrication layer of paste 40, can prevent drill bit
Block, so as to lift drilling efficiency.Further, since in drilling, nitrile rubber outer layer 20 is also under pressure, so that reserve liquid layer 50
Also it is under pressure, seal rubber plug 60 is ejected under high pressure, cleaning fluid is contained with reserve liquid layer 50, for cleaning drill bit, so as to reaches
To the purpose to auxiliary cleaning, in this way, also extending the working time of drill bit, it is to avoid frequent maintenance drill bit.Lubrication layer of paste 40 is set
Contribute to drill bit to rotate, it is to avoid fitchering, set reserve liquid layer to contribute to the self-cleaning of drill bit, so that when extending the work of drill bit
Between.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the range of the utility model, change, replace and
Modification.
Claims (2)
1. a kind of cementing plug for the resin inner core that PDC drill bit can be bored, it is characterised in that including：
The inner core that the phenolic resin of corrosion-and high-temp-resistant is made, the middle part of the inner core is logical provided with what is be distributed along its length
Groove；
The outside of the inner core is provided with nitrile rubber outer layer；The outline of the nitrile rubber outer layer is formed with several grooves, institute
Nitrile rubber outer layer formation closing space is stated to embed inner core；
Wherein, it is provided with lubrication layer of paste close to the position of inner core in the nitrile rubber outer layer；Towards remote in the nitrile rubber outer layer
Reserve liquid layer is additionally provided with from lubrication layer of paste, the top of the reserve liquid layer is provided with the seal rubber plug that can be flicked under a high pressure.
2. the cementing plug for the resin inner core that PDC drill bit according to claim 1 can be bored, it is characterised in that the groove
Include conical section, the cylindrical segment below conical section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621474833.2U CN206409210U (en) | 2016-12-30 | 2016-12-30 | A kind of cementing plug for the resin inner core that PDC drill bit can be bored |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621474833.2U CN206409210U (en) | 2016-12-30 | 2016-12-30 | A kind of cementing plug for the resin inner core that PDC drill bit can be bored |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206409210U true CN206409210U (en) | 2017-08-15 |
Family
ID=59552615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621474833.2U Expired - Fee Related CN206409210U (en) | 2016-12-30 | 2016-12-30 | A kind of cementing plug for the resin inner core that PDC drill bit can be bored |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206409210U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720092A (en) * | 2020-07-03 | 2020-09-29 | 常熟市石油固井工具有限公司 | Spherical high-pressure rubber plug for well cementation operation |
-
2016
- 2016-12-30 CN CN201621474833.2U patent/CN206409210U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720092A (en) * | 2020-07-03 | 2020-09-29 | 常熟市石油固井工具有限公司 | Spherical high-pressure rubber plug for well cementation operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170815 Termination date: 20181230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |