CN201460748U - Anti-clogging cover for oil bit port - Google Patents
Anti-clogging cover for oil bit port Download PDFInfo
- Publication number
- CN201460748U CN201460748U CN200920098225XU CN200920098225U CN201460748U CN 201460748 U CN201460748 U CN 201460748U CN 200920098225X U CN200920098225X U CN 200920098225XU CN 200920098225 U CN200920098225 U CN 200920098225U CN 201460748 U CN201460748 U CN 201460748U
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- China
- Prior art keywords
- bit port
- screen cloth
- utility
- model
- drilling
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- 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
The utility model belongs to the field of drilling tools, in particular relates to an anti-clogging cover for an oil bit port, which comprises a screen mesh and an elastic frame, wherein the mesh size of the screen mesh can be selected as required; three elasticity increasing grooves are uniformly arranged on the circumferences of both ends of a tubular frame respectively to form the elastic frame, the interval between every two grooves is 120 degrees, both of the two ends have a 60-degree mutual deviation, and the depth of each elasticity increasing groove exceeds one half of the total height of a tube body so that the frame can generate elastic effect in the radial direction and can be successfully arranged in a device hole of a bit port body with a larger tolerance range. The anti-clogging cover of the utility model is suitable for the device hole of the bit port body with a larger tolerance range, is favorable for being assembled in the drilling field, can be used conveniently, and can effectively filter slurry in a drilling hole to prevent the water port from being clogged.
Description
Technical field
The utility model belongs to the drilling tool field, be applicable to drilling bit in the process of going into the well hydrophthalmia prevent stop up, what ensure drillng operation normally carries out particularly a kind of oil bit port Anti-stop cover.
Background technology
In petroleum drilling operation, bit change or handle other down-hole accident more, drill bit is in the drilling well process of being inevitable of going into the well midway.Either large or small landwaste and rock fragment inevitably suspend in well mud, in drill bit is gone into the well process, the rock fragment less than bit port of some suspensions is by the anti-drill string centre bore that enters of hydrophthalmia, if it is too much to build up quantity, when beginning to creep into, because the flow velocity of mud is very fast, pressure is very big, probably the rock fragment that suspends is accumulated in the hydrophthalmia inboard and is compacted, block hydrophthalmia, drillng operation can't normally be carried out.Solve the situation that hydrophthalmia is blocked, need device, the mud that enters the drill string centre bore by hydrophthalmia in the well is filtered with a kind of similar strainer.
Summary of the invention
The purpose of this utility model is exactly at above-mentioned existing issue, and a kind of filter-oil bit port Anti-stop cover is provided.This device is applicable to the bit port body device hole that the margin of tolerance is bigger, is beneficial in the situ of drilling well assembling, and is easy to use, can filter the mud in the well effectively, prevents to block hydrophthalmia.
In order to achieve the above object, the technical solution of the utility model is: a kind of oil bit port Anti-stop cover, it is characterized in that: constitute by screen cloth and elastic skeleton, screen cloth can be selected the size of sieve aperture as required, described elastic skeleton is respectively the two ends of tubular armature evenly to be opened three at circumference to increase the bullet groove, 120 ° at interval of every grooves, 60 ° of two ends mutual deviations, increase the degree of depth that plays groove and should surpass 1/2 of body overall height, so that skeleton radially can produce elastic effect, the bit port body device hole that the margin of tolerance of packing into smoothly is bigger.
Above-mentioned screen cloth is welded on the elastic skeleton by the method for soldering, available soldering, silver soldering or brazing.
Above-mentioned screen cloth mesh wire diameter is no more than 0.5 millimeter.
The beneficial effects of the utility model are:
1, the utility model is slurry filter when going into the well, and stops rock fragment to enter the drill string centre bore.
2, after finishing filtration, mud pressure powerful during drilling well can destroy it, can the normal injection of hydrophthalmia mud not impacted.
3, owing to adopt elastic skeleton, the bigger bit port body device hole of the margin of tolerance that is easy to pack into makes things convenient for the situ of drilling well operation.
Description of drawings
Fig. 1 is the hydrophthalmia drawing of site of the utility model at drill bit.
Fig. 2 is that the utility model is at the hydrophthalmia position of drill bit enlarged drawing.
Fig. 3 increases the drawing of site that plays groove for the utility model elastic skeleton.
Fig. 4 is the position view of the utility model " point " weldering screen cloth it " point ".
The specific embodiment
Accompanying drawing Fig. 1 has summarized the drawing of site of the utility model at bit port.Fig. 2 is that the utility model is at the hydrophthalmia position of drill bit enlarged drawing.Fig. 3 increases the drawing of site that plays groove in the utility model elastic skeleton.Fig. 4 is the position view of the utility model " point " weldering screen cloth it " point ".1 is that oil use drill bit among the figure, and 2 be hydrophthalmia, and 4 be the utility model, promptly oilyly uses the bit port Anti-stop cover, and 40 is elastic skeleton of the present utility model, and 41 is screen cloth, and 42 increase the bullet groove under being, 43 increase the bullet groove on being, 44 is the weldering " point " of screen cloth.
As Fig. 1, Fig. 3, shown in Figure 4, the utility model is made of screen cloth (41) and elastic skeleton (40), screen cloth (41) can be selected the size of sieve aperture as required, elastic skeleton (40) is respectively the two ends of tubular armature evenly to be opened three at circumference to increase the bullet groove, 120 ° at interval of every grooves, 60 ° of two ends mutual deviations, increase the degree of depth that plays groove and should surpass 1/2 of body overall height, so that elastic skeleton (40) radially can produce elastic effect, the hydrophthalmia body device hole (2) of the drill bit that the margin of tolerance of packing into smoothly is bigger (1).
As with screen cloth (41) soldering on elastic skeleton (40).Weldering as shown in Figure 4 " point " (44).Available soldering, silver soldering or brazing are implemented in soldering.The weld strength of soldering is low, is destroyed by powerful mud pressure easily, and effect is better." point " welder skill is also destroyed designed by mud after finishing its style of work easily.Weldering " point " (44) should be located at elastic skeleton (40) circumference on increase and play groove (43) and increase the centre position that plays groove (42) down, prevent that scolder from invading and increase bullet groove (42), (43) and follow the string.Elastic skeleton (40) adopts elasticity material preferably; Screen cloth (41) mesh wire diameter is no more than 0.5 millimeter, is influenced drilling well in order to avoid destroy the back.
Claims (3)
1. an oil is used the bit port Anti-stop cover, it is characterized in that: constitute by screen cloth and elastic skeleton, screen cloth can be selected the size of sieve aperture as required, described elastic skeleton is respectively the two ends of tubular armature evenly to be opened three at circumference to increase the bullet groove, 120 ° at interval of every grooves, 60 ° of two ends mutual deviations increase the degree of depth that plays groove and should surpass 1/2 of body overall height.
2. oil bit port Anti-stop cover according to claim 1 is characterized in that: described screen cloth is welded on the elastic skeleton by the method for soldering, available soldering, silver soldering or brazing.
3. oil bit port Anti-stop cover according to claim 1 is characterized in that: described screen cloth mesh wire diameter is no more than 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920098225XU CN201460748U (en) | 2009-08-05 | 2009-08-05 | Anti-clogging cover for oil bit port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920098225XU CN201460748U (en) | 2009-08-05 | 2009-08-05 | Anti-clogging cover for oil bit port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201460748U true CN201460748U (en) | 2010-05-12 |
Family
ID=42388102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920098225XU Expired - Fee Related CN201460748U (en) | 2009-08-05 | 2009-08-05 | Anti-clogging cover for oil bit port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201460748U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606159A (en) * | 2017-09-21 | 2018-01-19 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit hydrophthalmia Anti-blocking structure |
-
2009
- 2009-08-05 CN CN200920098225XU patent/CN201460748U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606159A (en) * | 2017-09-21 | 2018-01-19 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit hydrophthalmia Anti-blocking structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20160805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |