CN202081828U - Special polycrystalline diamond compact for gauge protection of petroleum drill bit - Google Patents
Special polycrystalline diamond compact for gauge protection of petroleum drill bit Download PDFInfo
- Publication number
- CN202081828U CN202081828U CN2011201908171U CN201120190817U CN202081828U CN 202081828 U CN202081828 U CN 202081828U CN 2011201908171 U CN2011201908171 U CN 2011201908171U CN 201120190817 U CN201120190817 U CN 201120190817U CN 202081828 U CN202081828 U CN 202081828U
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- diamond
- composite bed
- special
- hard alloy
- protruding blade
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Abstract
The utility model discloses a special polycrystalline diamond compact for gauge protection of a petroleum drill bit, which comprises a diamond composite layer and a hard alloy matrix, the diamond composite layer is coated on one surface of the hard alloy matrix and a convex edge part is arranged at the middle part of the diamond composite layer. The special polycrystalline diamond compact can overcome the defects in the prior art and has the advantages of simple structure, low cost, good gauge protection and long service life.
Description
Technical field
The utility model relates to probing and uses apparatus field, is specifically related to a kind of oil bit and protects the special-purpose composite polycrystal-diamond in footpath.
Background technology
Diamond compact is that sintering under HTHP forms by diadust and cemented carbide substrate, has high strength, high-wearing feature, high impact toughness and solderability.Be widely used in industries such as oil, coal.At present, diamond compact bit is general use be still the planar diamond compact, there is following defective in this type of diamond compact in the drilling process of reality: because stressed concentrated at drilling process, the peripheral edge portion component velocity is fast, resistance is big, therefore phenomenons such as disintegrating tablet even whole diamond layer delamination appear in diamond composite bed periphery easily, abrasion resistance reduces, and causes diamond compact guarantor footpath effect and drill bit to lose efficacy in advance, and application life is short.
The utility model content
The purpose of this utility model is to provide a kind of oil bit to protect the special-purpose composite polycrystal-diamond in footpath, has overcome the defective that prior art exists, simple in structure, with low cost, good, the long service life of guarantor's footpath property.
The utility model is by the following technical solutions:
A kind of oil bit is protected the special-purpose composite polycrystal-diamond in footpath, wherein, comprises diamond composite bed and hard alloy substrate, and described diamond composite bed is coated in the one side of hard alloy substrate, at described diamond composite bed middle part one protruding blade is set.
Further, the corresponding protruding blade of described hard alloy substrate position is provided with a groove or plane, diamond coated composite bed in groove.
Further, the vertical height of described protruding blade and two side plane diamond composite beds is not less than 0.1mm.
The beneficial effects of the utility model are:
The utility model is simple in structure, with low cost, utilizes protruding blade can effectively prevent composite sheet stressed problems such as causing delamination of too concentrating in actual drilling process, and plays and strengthen the composite sheet abrasion resistance and protect the footpath effect.
Other advantages, target and the feature of utility model will be set forth to a certain extent in the following description, and to a certain extent, based on being conspicuous to those skilled in the art, perhaps can from practice of the present utility model, obtain instruction to investigating hereinafter.Target of the present utility model and other advantages can realize by following manual specifically noted structure and obtain.
Description of drawings:
Fig. 1 is the structural representation of protruding blade of embodiment 1 the utility model and diamond composite bed vertical transition;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is the structural representation of the protruding blade of the utility model and diamond composite bed angled transition among the embodiment 2;
Fig. 4 is the reeded structural representation of the utility model carbide alloy base strap among the embodiment 3.
The specific embodiment:
Below in conjunction with embodiment the utility model is further described:
Embodiment 1:
As shown in Figure 1 and Figure 2, diamond composite bed 2 is coated on hard alloy substrate 1, at diamond composite bed 2 is a protruding blade 3 at the middle part, and protruding blade 3 exceeds diamond composite bed 2 0.1mm, and to diamond composite bed 2 vertical transitions, this structure is than the plane diamond compact, drilling process convexity blade 3 at first pierces the stratum, disperses the composite sheet circumferential pressure, reduces the disintegrating tablet frequency, life-saving is suitable for than soft formation.
Embodiment 2:
As shown in Figure 3, the utility model comprises diamond composite bed 2 and hard alloy substrate 1, diamond composite bed 2 is coated on the one side of hard alloy substrate 1, protruding blade 3 is at the middle part of diamond composite bed 2, protruding blade 3 is 0.1mm with the vertical height of diamond composite bed 2, and to both sides plane inclination transition, protruding blade and diamond composite bed inclination angle are 45o, this structure is at actual drilling process, the protruding blade 3 in diamond compact middle part is formation drilling at first, and the angled transition face disperses protruding blade 3 and diamond composite bed 2 pressures, can effectively prevent stressed the concentrating of composite sheet integral body and protruding blade edge and cause phenomenons such as composite sheet edge disintegrating tablet and delamination, thereby play and protect the footpath and act on and prolong its application life, be fit to medium ground.
Embodiment 3:
As shown in Figure 4, diamond composite bed 3 is coated on the hard alloy substrate 1, protruding blade 3 is at the middle part of diamond composite bed 2, protruding blade 3 is identical material with diamond composite bed 2, a groove is set on the position of corresponding protruding blade 3 on the hard alloy substrate 1, diamond coated composite bed in the groove, protruding blade 3 is 0.1mm with the vertical height of diamond composite bed 2, this structure is in actual drilling process, not only can avoid composite sheet integral body and protruding blade edge to cause composite sheet edge disintegrating tablet phenomenon because of stressed concentrating, the groove of carbide alloy substrate can prevent effectively that also the integral body of diamond layer from coming off, and is applicable to hard formation.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, other modifications that those of ordinary skills make the technical solution of the utility model or be equal to replacement, only otherwise break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. an oil bit is protected the special-purpose composite polycrystal-diamond in footpath, and it is characterized in that: comprise diamond composite bed and hard alloy substrate, described diamond composite bed is coated in the one side of hard alloy substrate, at described diamond composite bed middle part one protruding blade is set.
2. oil bit as claimed in claim 1 is protected the special-purpose composite polycrystal-diamond in footpath, it is characterized in that: the corresponding protruding blade of described hard alloy substrate position can be provided with a groove or plane, diamond coated composite bed in groove.
3. oil bit as claimed in claim 1 or 2 is protected the special-purpose composite polycrystal-diamond in footpath, and it is characterized in that: the vertical height of described protruding blade and two side plane diamond composite beds is not less than 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201908171U CN202081828U (en) | 2011-06-08 | 2011-06-08 | Special polycrystalline diamond compact for gauge protection of petroleum drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201908171U CN202081828U (en) | 2011-06-08 | 2011-06-08 | Special polycrystalline diamond compact for gauge protection of petroleum drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081828U true CN202081828U (en) | 2011-12-21 |
Family
ID=45342464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201908171U Expired - Lifetime CN202081828U (en) | 2011-06-08 | 2011-06-08 | Special polycrystalline diamond compact for gauge protection of petroleum drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202081828U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075107A (en) * | 2013-01-16 | 2013-05-01 | 弘元超硬材料(河南)有限公司 | Diamond gauge protection composite tooth drill bit and manufacture method of diamond gauge protection composite tooth drill bit |
| CN105064925A (en) * | 2015-07-29 | 2015-11-18 | 桂林星钻超硬材料有限公司 | Embedded diamond gauge tooth |
| USD997219S1 (en) | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
| US11772977B2 (en) | 2019-07-10 | 2023-10-03 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom |
| USD1006073S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular structure |
-
2011
- 2011-06-08 CN CN2011201908171U patent/CN202081828U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075107A (en) * | 2013-01-16 | 2013-05-01 | 弘元超硬材料(河南)有限公司 | Diamond gauge protection composite tooth drill bit and manufacture method of diamond gauge protection composite tooth drill bit |
| CN105064925A (en) * | 2015-07-29 | 2015-11-18 | 桂林星钻超硬材料有限公司 | Embedded diamond gauge tooth |
| US11772977B2 (en) | 2019-07-10 | 2023-10-03 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact table with polycrystalline diamond extensions therefrom |
| USD997219S1 (en) | 2021-10-14 | 2023-08-29 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a double-layer structure |
| USD1006073S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised surface sloping to a peripheral extension |
| USD1006074S1 (en) | 2021-10-14 | 2023-11-28 | Sf Diamond Co., Ltd. | Polycrystalline diamond compact with a raised triangular structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |