CN2451714Y - Diamond bit for petroleum prospecting well drilling - Google Patents
Diamond bit for petroleum prospecting well drilling Download PDFInfo
- Publication number
- CN2451714Y CN2451714Y CN 00232425 CN00232425U CN2451714Y CN 2451714 Y CN2451714 Y CN 2451714Y CN 00232425 CN00232425 CN 00232425 CN 00232425 U CN00232425 U CN 00232425U CN 2451714 Y CN2451714 Y CN 2451714Y
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- Prior art keywords
- cutting teeth
- secondary cutting
- row
- tooth
- wing
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- Expired - Lifetime
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Abstract
The utility model relates to a diamond bit for petroleum exploration and well drilling, which comprises a bit body. The bit body is provided with a main knife blade and an auxiliary knife blade, wherein the main knife blade and the auxiliary knife blade are provided with main cutting teeth. The diamond bit for petroleum exploration and well drilling is characterized in that one to two rows of auxiliary cutting teeth of which the blade outlet heights are lower than the main cutting teeth are arranged behind the main cutting teeth. The auxiliary cutting teeth of the utility model not only can limit the depth of the main cutting teeth moving in the stratum to reduce vibration but also can bear a part of cutting tasks to make the bit have stronger cutting capability. The diamond bit for petroleum exploration and well drilling can be suitable for drilling the stratums with definite abrasiveness, or the sandwich stratums with staggered soft stratums and hard stratums, or some gravel stratums from the softer stratum to the harder stratum and can obtain better effect.
Description
The utility model relate to a kind of be suitable for having certain abrasiveness or the staggered interlayer of soft or hard or some layer of gravel in the soft diamond bit of using to the oil exploration drilling of medium ground.
In recent years, diamond bit has obtained using widely in the oil exploration drilling engineering.Diamond bit is made up of bit body, cutting teeth and hydraulic structure etc., and it is with contacting of formation rock its generation extruding and shearing rock stratum to be come fractured rock by cutting teeth.Usually diamond bit soft in can obtain higher rate of penetration during drilling well in the hard big section even quality layer, but since the impact resistance of various superhard materials that its cutting element adopted such as PDC (polycrystalline diamond) tooth, TSP tooth etc. and in the stronger stratum of abrasiveness its abrasion resistance relatively poor, thereby limited the use of this drill bit in stratum with the staggered interlayer of abrasiveness or soft or hard or layer of gravel.
On the other hand, diamond bit is as a kind of cutting structure fixed reamer head, it has long service life, drilling depth height, rate of penetration is fast, down-hole accident is few advantage, thereby people constantly study its scope of application of expansion, comprising the stratum that how to be applied to have the staggered interlayer of abrasiveness or soft or hard or some layer of gravel.For achieving the above object, a method the most commonly used is the cloth tooth density that increases drill bit, but the simple method that increases cloth tooth density that adopts is difficult to the effect that reaches good.Another kind method is that certain position is provided with height of protrusion low " cushion blocking " than cutting teeth behind the cutting teeth of drill bit, described in United States Patent (USP) 4991670 and 5090492." cushion blocking " can not cut the stratum, thereby but can reach the optimized cutting effect with the shock resistance that strengthens cutting teeth by the degree of depth that it limits cutting teeth wedging stratum.Adopt this structure that the abrasion resistance of tooth is had relatively high expectations, in case because cutting teeth may wear to equally with " cushion blocking " when high, the pressure of the drill just is difficult to add, can cause rate of penetration to cross slow thus and influences the functional performance of drill bit.
The purpose of this utility model be to overcome the deficiencies in the prior art and provide a kind of be suitable for having certain abrasiveness or the staggered interlayer of soft or hard or some layer of gravel in the soft diamond bit of using to the oil exploration drilling on medium hardness stratum.
The technical scheme that realizes the utility model purpose is: include bit body, bit body is provided with the operator wing 3 and secondary wing 4, be installed on main cutting tooth 2 on the major and minor wing, its difference is that main cutting tooth rear is provided with 1～2 and discharges the secondary cutting teeth 1 that the sword height is lower than the main cutting tooth.
Press such scheme, described secondary cutting teeth is cylindrical or multi-edge column-shaped or be the mixing setting of cylindrical and many prismatics; The appearance and size (diameter and cross section) of secondary cutting teeth is less than the appearance and size of main cutting tooth; Secondary cutting teeth can be arranged on the main cutting tooth rear on the operator wing, and secondary cutting teeth also can be arranged on the main cutting tooth rear on the secondary wing, also can be arranged on the main cutting tooth rear of major and minor wing simultaneously, and secondary cutting teeth is made of TSP (TSP) tooth.
The utility model is by being provided with anti-abrasiveness and the resistance to impact that secondary cutting teeth strengthens drill bit behind the main cutting tooth of drill bit.When drill bit crept in than soft formation, the master cut cutting teeth and plays main shear action the preceding; When bore meeting than hard formation, after secondary cutting teeth both can limit front main cutting tooth wedging stratum the degree of depth to reduce vibration, can bear part cutting task again; When bore meeting hard interbedded layer or abrasiveness strongly when layer or layer of gravel, wearing and tearing along with front main cutting tooth, secondary cutting teeth will be born the cutting task, after getting out these stratum, because the cutting element of drill bit still has stronger cutting power, so drill bit still can creep into gratifying speed, the cutting ability of diamond bit and the scope of application are effectively expanded.
Fig. 1,2,3,4,5,6,7,8,9,10,11,12 is respectively the drill bit perspective view of each embodiment of the utility model.
Figure 13,14,15 is respectively several difform secondary cutting teeths drill bit lateral profile schematic diagram when laying.
Figure 16 is a major and minor cutting teeth back rake angle schematic diagram of the present utility model.
Further specify embodiment of the present utility model below in conjunction with accompanying drawing, include bit body, bit body is provided with the operator wing 3 and secondary wing 4, main, have recessed face groove 7 between the secondary wing, the end of bit body offers nozzle 5, leading, be installed on main cutting tooth 2 on the secondary wing, the main cutting tooth is cylindrical, it is hemispherical that afterbody is, behind main cutting tooth on the operator wing, be installed on the secondary cutting teeth 1 of 1 row, leading, between the secondary cutting teeth scrap slot 6 is set, secondary cutting teeth is cylindrical or triangular prism shaped, is perhaps laid by cylindrical and the interlaced mixing of prismatic, the height of protrusion of secondary cutting teeth is lower than main cutting tooth 0.5～2mm, the appearance and size of secondary cutting teeth is less than the appearance and size of main cutting tooth, as Fig. 9, shown in 10, the back rake angle b of secondary cutting teeth
2The back rake angle b of 〉=main cutting tooth
1, along the secondary cutting teeth of stretching the back rake angle that increases gradually, b can be arranged laterally from bit central
2Value be generally 20 °～30 °, the laying of secondary cutting teeth is from the nose 8 of bit body, finishes to the bit body profile outside 9, shown in Figure 13,14.The utility model can above-mentioned be provided with one row secondary cutting teeth the basis on, behind the secondary cutting teeth of the 1st row on the operator wing, install the secondary cutting teeth 1 of the 2nd row, the secondary cutting teeth of the 2nd row can be installed with the 1st secondary cutting teeth of row and column alignment, perhaps install with the secondary cutting teeth of the 1st row is staggered side by side, the secondary cutting teeth of two rows can adopt identical shaped profile of tooth, perhaps also can be difform profile of tooth, the secondary height of protrusion of cutting tooth of the 2nd row equals the height of protrusion of the secondary cutting teeth of the 1st row for a short time, and the back rake angle of the secondary cutting teeth of the 2nd row equals the back rake angle of the secondary cutting teeth of the 1st row for a short time.
Second embodiment of the utility model as shown in Figure 1, it is to be provided with 1～2 to discharge the secondary cutting teeth 1 that the sword height is lower than the main cutting tooth at the main cutting tooth rear portion of major and minor wing, promptly behind the main cutting tooth of the operator wing, install the secondary cutting teeth of 1～2 row, behind the main cutting tooth of secondary wing, also install the secondary cutting teeth of 1～2 row, the mode of installing can with operator identical on the wing, between the main cutting tooth of secondary wing and secondary cutting teeth, also be provided with scrap slot 6.
The 3rd embodiment of the utility model as shown in Figure 2, its feature is to install 1～2 to discharge the secondary cutting teeth 1 that the sword height is lower than the main cutting tooth behind the main cutting tooth 2 of secondary wing 4, the structural parameters of secondary cutting teeth are identical with first embodiment.
Claims (9)
1, a kind of diamond bit that is used for oil exploration drilling, include bit body, bit body is provided with the operator wing (3) and secondary wing (4), be installed on main cutting tooth (2) on the major and minor wing, it is characterized in that main cutting tooth rear is provided with 1～2 and discharges the secondary cutting teeth (1) that the sword height is lower than the main cutting tooth.
2,, it is characterized in that described secondary cutting teeth is arranged on the main cutting tooth rear on the operator wing (3) by the described diamond bit that is used for oil exploration drilling of claim 1.
3,, it is characterized in that secondary cutting teeth is arranged on the main cutting tooth rear on the secondary wing (4) by claim 1 or the 2 described diamond bits that are used for oil exploration drilling.
4, by claim 1 or the 2 described diamond bits that are used for oil exploration drilling, it is characterized in that secondary cutting teeth (1) for cylindrical or multi-edge column-shaped or be the mixing setting of cylindrical and many prismatics, the appearance and size of secondary cutting teeth is less than the appearance and size of main cutting tooth.
5,, it is characterized in that the height of protrusion of secondary cutting teeth is lower than main cutting tooth 0.5～2mm by claim 1 or the 2 described diamond bits that are used for oil exploration drilling.
6,, it is characterized in that the back rake angle b of secondary cutting teeth by claim 1 or the 2 described diamond bits that are used for oil exploration drilling
2The back rake angle b of 〉=main cutting tooth
1, along the secondary cutting teeth of stretching the back rake angle that increases gradually, b are arranged laterally from bit central
2Value be generally 20 °～30 °.
7, by claim 1 or the 2 described diamond bits that are used for oil exploration drilling, it is characterized in that behind the secondary cutting teeth of last the 1st row of the operator wing (3), installing the 2nd row's secondary cutting teeth (1), the 2nd secondary cutting teeth of row and the 1st secondary cutting teeth of row and column alignment are installed, perhaps install with the secondary cutting teeth of the 1st row is staggered side by side, the secondary cutting teeth of two rows adopts identical shaped profile of tooth, it perhaps is difform profile of tooth, the secondary height of protrusion of cutting tooth of the 2nd row equals the height of protrusion of the secondary cutting teeth of the 1st row for a short time, and the back rake angle of the secondary cutting teeth of the 2nd row equals the back rake angle of the secondary cutting teeth of the 1st row for a short time.
8,, it is characterized in that behind the main cutting tooth of secondary wing (4), also installing the secondary cutting teeth of 1～2 row by the described diamond bit that is used for oil exploration drilling of claim 7.
9, by claim 1 or the 2 described diamond bits that are used for oil exploration drilling, it is characterized in that having recessed face groove (7) between the major and minor wing, the end of bit body offers nozzle (5), and scrap slot (6) is set between major and minor cutting teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232425 CN2451714Y (en) | 2000-11-16 | 2000-11-16 | Diamond bit for petroleum prospecting well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232425 CN2451714Y (en) | 2000-11-16 | 2000-11-16 | Diamond bit for petroleum prospecting well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2451714Y true CN2451714Y (en) | 2001-10-03 |
Family
ID=33595061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00232425 Expired - Lifetime CN2451714Y (en) | 2000-11-16 | 2000-11-16 | Diamond bit for petroleum prospecting well drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2451714Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105793514A (en) * | 2013-12-06 | 2016-07-20 | 哈里伯顿能源服务公司 | Rotary drill bit including multi-layer cutting elements |
| CN105849355A (en) * | 2013-12-18 | 2016-08-10 | 哈里伯顿能源服务公司 | Cutting structure design with secondary cutter methodology |
| CN106194033A (en) * | 2015-05-06 | 2016-12-07 | 成都百施特金刚石钻头有限公司 | Hybrid downhole drill drill bit |
| WO2018000781A1 (en) * | 2016-06-28 | 2018-01-04 | 四川川庆石油钻采科技有限公司 | Double-cutting impregnated diamond drill |
| US10036207B2 (en) | 2012-05-30 | 2018-07-31 | Halliburton Energy Services, Inc. | Rotary drill bit and method for designing a rotary drill bit for directional and horizontal drilling |
| CN108798525A (en) * | 2018-06-12 | 2018-11-13 | 中国五冶集团有限公司 | The single-cone rotary drill bit of stack process |
| US10214966B2 (en) | 2012-07-13 | 2019-02-26 | Halliburton Energy Services, Inc. | Rotary drill bits with back-up cutting elements to optimize bit life |
| CN116517475A (en) * | 2023-06-30 | 2023-08-01 | 西南石油大学 | Novel wear-resistant and anti-collision beak-shaped tooth multi-blade PDC drill bit |
-
2000
- 2000-11-16 CN CN 00232425 patent/CN2451714Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10036207B2 (en) | 2012-05-30 | 2018-07-31 | Halliburton Energy Services, Inc. | Rotary drill bit and method for designing a rotary drill bit for directional and horizontal drilling |
| US10590711B2 (en) | 2012-05-30 | 2020-03-17 | Multi-Chem Group, Llc | Rotary drill bit and method for designing a rotary drill bit for directional and horizontal drilling |
| US10214966B2 (en) | 2012-07-13 | 2019-02-26 | Halliburton Energy Services, Inc. | Rotary drill bits with back-up cutting elements to optimize bit life |
| CN105793514A (en) * | 2013-12-06 | 2016-07-20 | 哈里伯顿能源服务公司 | Rotary drill bit including multi-layer cutting elements |
| CN105793514B (en) * | 2013-12-06 | 2018-01-16 | 哈里伯顿能源服务公司 | Include the rotary drilling-head of multilayer cutting element |
| US10329845B2 (en) | 2013-12-06 | 2019-06-25 | Halliburton Energy Services, Inc. | Rotary drill bit including multi-layer cutting elements |
| US10781642B2 (en) | 2013-12-06 | 2020-09-22 | Halliburton Energy Services, Inc. | Rotary drill bit including multi-layer cutting elements |
| US10920496B2 (en) | 2013-12-18 | 2021-02-16 | Halliburton Energy Services, Inc. | Cutting structure design with new backup cutter methodology |
| CN105849355A (en) * | 2013-12-18 | 2016-08-10 | 哈里伯顿能源服务公司 | Cutting structure design with secondary cutter methodology |
| US11542754B2 (en) | 2013-12-18 | 2023-01-03 | Halliburton Energy Services, Inc. | Cutting structure design with secondary cutter methodology |
| CN106194033A (en) * | 2015-05-06 | 2016-12-07 | 成都百施特金刚石钻头有限公司 | Hybrid downhole drill drill bit |
| WO2018000781A1 (en) * | 2016-06-28 | 2018-01-04 | 四川川庆石油钻采科技有限公司 | Double-cutting impregnated diamond drill |
| CN108798525A (en) * | 2018-06-12 | 2018-11-13 | 中国五冶集团有限公司 | The single-cone rotary drill bit of stack process |
| CN116517475A (en) * | 2023-06-30 | 2023-08-01 | 西南石油大学 | Novel wear-resistant and anti-collision beak-shaped tooth multi-blade PDC drill bit |
| CN116517475B (en) * | 2023-06-30 | 2023-10-03 | 西南石油大学 | Novel wear-resistant and anti-collision beak-shaped tooth multi-blade PDC drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20101116 Granted publication date: 20011003 |