CN201802311U - Tricone bit for drilling well at high rotating speed - Google Patents
Tricone bit for drilling well at high rotating speed Download PDFInfo
- Publication number
- CN201802311U CN201802311U CN2010205392552U CN201020539255U CN201802311U CN 201802311 U CN201802311 U CN 201802311U CN 2010205392552 U CN2010205392552 U CN 2010205392552U CN 201020539255 U CN201020539255 U CN 201020539255U CN 201802311 U CN201802311 U CN 201802311U
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- bit
- rotating speed
- high rotating
- tricone
- drilling well
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Abstract
The utility model relates to a tricone bit for drilling a well at high rotating speed. The tricone bit comprises three bit legs and three roller cones. Teeth are distributed on each roller cone. The upper parts of the three bit legs are integrally connected to form a bit body. A spray nozzle seat is arranged on the bit body. A spray nozzle is arranged in the spray hole of the spray nozzle seat. The tricone bit is characterized in that a bit bearing between each roller cone and a bit leg shaft is a rolling and sliding composite bearing with rollers and arc sliding blocks which are arranged at intervals, and the seal of the bit bearing between each roller cone and the bit leg shaft is a metallic seal. Since the rolling and sliding composite bearing can bear high rotating speed and high load and has high impact resistance, the service life of the bearing when the tricone bit works at high rotating speed and medium-high bit pressure; a six-point gauge protection structure can enhance the stability of the bit, the probability of tooth rupture caused by the vibration of the bit is reduced and the service life of the teeth is further improved; and the tricone bit is suitable for high rotating speed and medium-high bit pressure, and the drilling efficiency is high and the service life is long.
Description
Technical field
The utility model relates to a kind of tricone bit, relates in particular to a kind of tricone bit that is used for high rotating speed drilling well, belongs to geological drilling and petroleum drilling technology field.
Technical background
Existing tricone bit has generally included a bit body, and three bit legs are arranged on the bit body, and gear wheel is installed on the bit leg axle of bit leg lower end inclination, and bit leg axle and gear wheel endoporus are provided with bearing pair, and the pressure of the drill and moment of torsion are passed to gear wheel.At present, cone bit bearing mainly contains sliding bearing and two kinds of forms of rolling bearing.Have steel-tooth or carbide alloy inserted on the gear wheel, drilling fluid enters the drill bit runner from drill string, then from three nozzle ejections.Nozzle is installed in the nozzle carrier, and drilling fluid returns from the nozzle carrier both sides after impacting the shaft bottom.Injection stream sprays in the middle of two gear wheels and the close borehole wall.3 contact boreholes wall are arranged on the outer rows of teeth of bit cone, and contact point is in the front side of each gear wheel.When cooperating the high rotating speed drilling well of turbine or high-speed screws, there is following problems in above-mentioned existing rock bit: sliding bearing can not bear high rotating speed, and rolling bearing is difficult to bear high the pressure of the drill, so bearing life significantly reduces; High rotating speed drilling well will cooperate higher the pressure of the drill simultaneously, and the suffered impact of tooth relatively obviously increases, and the horizontal and vertical vibration of drill bit is more serious, thereby tooth wear is fast, and fracture of tooth takes place easily, thereby reduces drilling efficiency.In addition, high rotating speed drill bit uses at hard formation, and the tooth wear heating is fast, can not get timely cooling, causes the tooth premature failure.
Summary of the invention
Technical problem to be solved in the utility model is the deficiency that exists at above-mentioned prior art and a kind of tricone bit that is used for high rotating speed drilling well is provided, it can cooperate higher the pressure of the drill to carry out work under high rotating speed, can reduce the impact force of tooth, strengthen efficiency of breaking rock, thereby improve the drilling efficiency and the resultant effect of rock bit.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is: include three bit legs and the gear wheel that is installed in the bit leg lower end, lay tooth on the gear wheel, the top of three bit legs is linked into one and constitutes bit body, on bit body, be installed on nozzle carrier, be installed on nozzle in the spray orifice of nozzle carrier, its difference is that the bit bearing of gear wheel and bit leg between centers is roller and the spaced apart roll-slide combined bearing of arc shaped slider, and the bit bearing of gear wheel and bit leg between centers is sealed into metallic seal.
Press such scheme, the arc shaped slider exterior arc surface diameter of described roll-slide combined bearing is identical with the gear wheel diameter of bore, length is identical with roller, the radial thickness of arc shaped slider is greater than the roller diameter, greater than amount is 0.03～2.00mm, greater than the amount relevant with bit diameter, bit diameter from φ 75mm to φ 660mm; Arc shaped slider pitch circle arc length (arc length on slide block and the roller design contact point place circle) is less than or equal to 2 times roller diameter.
Press such scheme, between roll-slide combined bearing and bit leg axle, sliding sleeve is set; Described sliding sleeve material is a tool steel.
Press such scheme, side, described arc shaped slider both sides parallels; Arc shaped slider is made by tool steel or spring steel, and roller is made by bearing steel.
Press such scheme, the top rear side of the described bit leg palm back of the body segment distance that extends back, form and extend blocks, the tactical diameter that extends blocks is slightly less than rock bit rule footpath, is 0.3～1.5mm less than amount, form the gage surface on bit leg top, extend insert 2～3 row's gauge teeths on the blocks, 2～3 gauge teeths of every row, interleaved is arranged, constitute six with gear wheel thus and protect the footpath point, promptly three gear wheels and three palm backs respectively are provided with one and protect the footpath point.Described gauge teeth is hard-metal insert or diamond composite teeth.
Press such scheme, on the inside and outside arc surface of described arc shaped slider oil groove is set all, the angle of oil groove and arc shaped slider axial end is 0～75 °, and the oil groove spaced and parallel is provided with; Position and direction that oil groove on the inside and outside arc surface is provided with are interlaced.
Press such scheme, described metallic seal is bimetallic (spring cone) seal, comprises the rubber seal and the metal o-ring that are installed on the bit leg axle, is installed in the rubber seal and the metal o-ring of gear wheel endoporus, the end face of two metal o-rings cooperates, and forms the end face rotary dynamic seal.
Press such scheme, the tooth of laying on the described gear wheel comprises main cutting tooth and outer rows of teeth, and the main cutting tooth is a convex tooth top tooth, comprises protruding top chisel teeth (CN200510019419.2), and outer rows of teeth is chisel teeth or hemi-spherical ended shape insert.
Press such scheme, install nozzle carrier in the extension blocks of the top rear side of the described bit leg palm back of the body, install nozzle in the nozzle carrier, the injection stream injection direction towards a back gear wheel the place ahead.
Press such scheme, described bit leg leading flank integral body is deflection backward, and the angle of deflection is 10 °～30 ° backward, and with the rear side formation spiral return flow line of previous bit leg, drilling fluid returns from the spiral return flow line after impacting the shaft bottom.
The beneficial effects of the utility model are: 1, roll-slide combined bearing can bear high rotating speed and higher load, and possesses stronger shock resistance, thereby guaranteed rock bit high rotating speed and in bearing life under high the pressure of the drill condition, and bearing seal is adopted the metallic seal that adapts to high rotating speed and worst hot case that bearing life is further guaranteed and is improved; 2, between roll-slide combined bearing and bit leg axle, sliding sleeve is set and slip and the lubrication state that oil groove has improved arc shaped slider is set on arc shaped slider, help rock bit in the further raising of rotating speed under high the pressure of the drill condition; 3, because the aggressiveness of cutter with convex tooth-tip is stronger, be easy to fractured rock, under high-speed state, can improve the drilling efficiency of rock bit, can guarantee the Acceptable life of tooth under high rotating speed again; And the top rear side of the bit leg palm back of the body segment distance that extends back forms the gage surface on bit leg top, and 6 gauge structures have strengthened the stability of drill bit, have reduced the fracture of tooth that drill vibration caused, and further improved the application life of tooth; 4, the spiral return flow line helps returning on the landwaste of shaft bottom, and vectored injection strengthens tooth cooling, the raising of favourable drilling efficiency.
The utility model has made up roll-slide combined bearing, metallic seal, bit leg palm back portion rear side enlarged diameter forms technology such as gage surface, matching design bit cutting structure and hydraulic structure, a kind of rock bit that is used for high rotating speed, high the pressure of the drill drilling well that forms, this drill bit is in use obtained good effect, under the pressure of the drill 80～140KN, rotating speed 400r/min condition, drilling depth and application life all improve more than the twice than existing common metal sealing drill bit, obviously have higher drilling efficiency and application life.
Description of drawings
Fig. 1 is the elevation of an embodiment of the utility model.
Fig. 2 is the sectional view of an embodiment middle (center) bearing part of the utility model.
Fig. 3 is the sectional view of metallic seal among embodiment of the utility model.
Fig. 4 is the vertical view of arc shaped slider among embodiment of the utility model.
Fig. 5 is the tooth profile of tooth stereogram of an embodiment of the utility model.
Fig. 6 is the elevation of a downward state of embodiment gear wheel of the utility model.
The specific embodiment
Further describe embodiment of the present utility model below in conjunction with accompanying drawing.
A kind of tricone bit, the top that includes three bit legs 3 and 4, three bit legs 3 of gear wheel that are installed in the bit leg lower end is linked into one by assembly welding and constitutes bit body, and the top of bit body is provided with taper thread 1, in order to connect with drill string; Gear wheel passes through steel ball 20 axial location on bit leg axle 13, bit bearing 6 at gear wheel and bit leg between centers is roller 7 and arc shaped slider 8 spaced apart roll-slide combined bearings, side, arc shaped slider 8 both sides 10 parallels and is symmetrical with the arc shaped slider center line, its external arc 11 diameters are identical with gear wheel endoporus 12 diameters, its radial thickness W is 0.08～0.20mm greater than the roller diameter d greater than amount; Its length is identical with roller, and arc shaped slider pitch circle arc length S (arc length on slide block and the roller design contact point place circle) is 1.5 with the ratio of roller diameter d, and the arc shaped slider material is a tool steel, and roller is made by bearing steel; On the arc shaped slider 8 inside and outside arc surfaces oil groove 33 is set all, oil groove 33 is α with the angle of slide block axial end 34, and α is 45 °; The direction (rotation direction) that inside and outside arc surface finishing bathtray is provided with is opposite, and is interlaced.Also be provided with sliding sleeve 14 between slide block 8, roller 7 and bit leg axle 13, the monolateral radial thickness of sliding sleeve is 2～4 millimeters, and the sliding sleeve material is a tool steel.
Adopt bimetallic (spring cone) seal 22 to seal between gear wheel and the bit leg axle.Bimetallic (spring cone) seal by pair of metal ring 25 and 25 ' and a pair of rubber ring 26 and 26 ' and the seal groove 28 in the seal groove 27 of bit leg 3 roots 23 and gear wheel 4 endoporus apertures constitute.Metal ring 25 closely contacts with 25 ' end face 30, constitute the axial end sealing, this is sealed into rotary dynamic seal, compare with the movable sealing of General Purpose Rubber O shape circle, can bear relative rotation speed between the higher palm of roller bits and higher environment temperature, rubber ring 26 and 26 ' is an O type circle, wherein rubber ring 26 ' is 31 with the contact surface of bit leg 3 seal grooves 27, with the contact surface of metal ring 25 ' be 29 ', contact surface 31 becomes the α angle with 29 ' with the teeth palm bearing center line, rubber ring 26 is 32 with the contact surface of gear wheel 4 seal grooves 28, with the contact surface of metal ring 25 be 29, contact surface 32 becomes the β angle with 29 with the teeth palm bearing center line.Rubber ring 26 is to guarantee that with 26 ' main effect two metal rings 25 closely contact with 25 ', plays the static seal effect simultaneously.
Be laid with main cutting tooth 5 and outer rows of teeth 21 on the described gear wheel 4, main cutting tooth 5 is a convex tooth top tooth, and promptly tooth top 19 is a convex surface; Outer rows of teeth 21 is chisel teeth or hemi-spherical ended shape insert.Described bit leg leading flank 15 integral body are deflection backward, and the angle of deflection is 20 °～30 ° backward, and with the trailing flank formation spiral return flow line of previous bit leg, drilling fluid returns from the spiral return flow line after impacting the shaft bottom.The top rear side of the described bit leg palm back of the body segment distance that extends back, form and extend blocks, the tactical diameter that extends blocks is slightly less than rock bit rule footpath, is 1.0～1.5mm less than amount, forms the gage surface on bit leg top, this extends insert 2～3 row's gauge teeths on the blocks, 2～3 gauge teeths 9 of every row, interleaved is arranged, and the radius of gyration at gauge teeth place is than the little 0.5mm of drill bit radius, and protect the footpath points for three that form palm back from top to bottom, reduce gradually from front to back, thus.Be installed on 2～3 row's gauge teeths on this external bit leg, 4～8 gauge teeths of every row.In the extension blocks of the top rear side of the bit leg palm back of the body, install nozzle carrier 2 and nozzle 16, injection stream 17 injection directions towards a back gear wheel the place ahead 18.
Claims (11)
1. tricone bit that is used for high rotating speed drilling well, include three bit legs and the gear wheel that is installed in the bit leg lower end, lay tooth on the gear wheel, the top of three bit legs is linked into one and constitutes bit body, on bit body, be installed on nozzle carrier, be installed on nozzle in the spray orifice of nozzle carrier, the bit bearing that it is characterized in that gear wheel and bit leg between centers is roller and the spaced apart roll-slide combined bearing of arc shaped slider, and the bit bearing of gear wheel and bit leg between centers is sealed into metallic seal.
2. by the described tricone bit that is used for high rotating speed drilling well of claim 1, the arc shaped slider exterior arc surface diameter that it is characterized in that described roll-slide combined bearing is identical with the gear wheel diameter of bore, length is identical with roller, the radial thickness of arc shaped slider is 0.03～2.00mm greater than the roller diameter greater than amount; Arc shaped slider pitch circle arc length is less than or equal to 2 times roller diameter.
3. by claim 1 or the 2 described tricone bits that are used for high rotating speed drilling well, it is characterized in that between roll-slide combined bearing and bit leg axle, sliding sleeve being set; Described sliding sleeve material is a tool steel.
4. by claim 1 or the 2 described tricone bits that are used for high rotating speed drilling well, it is characterized in that side, described arc shaped slider both sides parallels; Arc shaped slider is made by tool steel or spring steel, and roller is made by bearing steel.
5. by claim 1 or the 2 described tricone bits that are used for high rotating speed drilling well, the top rear side that it is characterized in that the described bit leg palm back of the body segment distance that extends back, form and extend blocks, the tactical diameter that extends blocks is slightly less than rock bit rule footpath, less than amount is 0.3～1.5mm, form the gage surface on bit leg top, extend insert 2～3 row's gauge teeths on the blocks, 2～3 gauge teeths of every row.
6. by claim 1 or the 2 described tricone bits that are used for high rotating speed drilling well, it is characterized in that on the inside and outside arc surface of described arc shaped slider oil groove being set all, the angle of oil groove and arc shaped slider axial end is 0～75 °, and the oil groove spaced and parallel is provided with.
7. by the described tricone bit that is used for high rotating speed drilling well of claim 6, it is characterized in that the position and the direction of the oil groove setting on the described inside and outside arc surface is interlaced.
8. by claim 1 or the 2 described tricone bits that are used for high rotating speed drilling well, it is characterized in that described metallic seal is bimetallic (spring cone) seal, comprise the rubber seal and the metal o-ring that are installed on the bit leg axle, be installed in the rubber seal and the metal o-ring of gear wheel endoporus, the end face of two metal o-rings cooperates the formation rotary dynamic seal.
9. by claim 1 or the 2 described tricone bits that are used for high rotating speed drilling well, it is characterized in that the tooth of laying on the described gear wheel comprises main cutting tooth and outer rows of teeth, the main cutting tooth is a convex tooth top tooth, and outer rows of teeth is chisel teeth or hemi-spherical ended shape insert.
10. by the described tricone bit that is used for high rotating speed drilling well of claim 5, it is characterized in that installing nozzle carrier in the extension blocks of top rear side of the described bit leg palm back of the body, install nozzle in the nozzle carrier, the injection stream injection direction towards a back gear wheel the place ahead.
11. by the described tricone bit that is used for high rotating speed drilling well of claim 5, it is characterized in that described bit leg leading flank integral body deflection backward, the angle of deflection is 10 °～30 ° backward, form the spiral return flow line with the rear side of previous bit leg, drilling fluid returns from the spiral return flow line after impacting the shaft bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205392552U CN201802311U (en) | 2010-03-09 | 2010-09-15 | Tricone bit for drilling well at high rotating speed |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020129517.8 | 2010-03-09 | ||
| CN201020129517 | 2010-03-09 | ||
| CN2010205392552U CN201802311U (en) | 2010-03-09 | 2010-09-15 | Tricone bit for drilling well at high rotating speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802311U true CN201802311U (en) | 2011-04-20 |
Family
ID=43871816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205392552U Expired - Lifetime CN201802311U (en) | 2010-03-09 | 2010-09-15 | Tricone bit for drilling well at high rotating speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802311U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967956A (en) * | 2010-03-09 | 2011-02-09 | 江汉石油钻头股份有限公司 | Tricone bit used for high-rotation speed drilling |
| WO2013044460A1 (en) * | 2011-09-28 | 2013-04-04 | 江汉石油钻头股份有限公司 | Tricone rock bit for horizontal wells and hard formation wells |
| CN103075106A (en) * | 2013-01-11 | 2013-05-01 | 西南石油大学 | Hollow rolling and sliding composite bearing for rock bit |
| CN104968882A (en) * | 2013-03-14 | 2015-10-07 | 三菱综合材料株式会社 | Digging tool |
| RU2575373C2 (en) * | 2011-09-28 | 2016-02-20 | Кингдрим Паблик Лтд. Ко. | Three-cutter drill bit for horizontal wells and those in hard rock |
| CN107620571A (en) * | 2017-11-03 | 2018-01-23 | 西南石油大学 | A kind of casing failure well reparation long-life composite drill bit |
| CN109386236A (en) * | 2018-10-16 | 2019-02-26 | 西南石油大学 | A kind of Customised corneal ablation formula tricone bit |
| CN110792391A (en) * | 2018-08-01 | 2020-02-14 | 中国石油化工股份有限公司 | High-temperature resistant jet impactor |
| CN114320163A (en) * | 2022-03-14 | 2022-04-12 | 西南石油大学 | Sealing element for roller bit and roller bit |
-
2010
- 2010-09-15 CN CN2010205392552U patent/CN201802311U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967956B (en) * | 2010-03-09 | 2013-06-05 | 江汉石油钻头股份有限公司 | Tricone bit used for high-rotation speed drilling |
| CN101967956A (en) * | 2010-03-09 | 2011-02-09 | 江汉石油钻头股份有限公司 | Tricone bit used for high-rotation speed drilling |
| CN103781986B (en) * | 2011-09-28 | 2016-08-17 | 江汉石油钻头股份有限公司 | A kind of for horizontal well with the tricone bit of hard formation well |
| WO2013044460A1 (en) * | 2011-09-28 | 2013-04-04 | 江汉石油钻头股份有限公司 | Tricone rock bit for horizontal wells and hard formation wells |
| CN103781986A (en) * | 2011-09-28 | 2014-05-07 | 江汉石油钻头股份有限公司 | Tricone rock bit for horizontal wells and hard formation wells |
| RU2575373C2 (en) * | 2011-09-28 | 2016-02-20 | Кингдрим Паблик Лтд. Ко. | Three-cutter drill bit for horizontal wells and those in hard rock |
| US9410378B2 (en) | 2011-09-28 | 2016-08-09 | Kingdream Public Ltd. Co. | Tricone rock bit for horizontal wells and hard formation wells |
| CN103075106A (en) * | 2013-01-11 | 2013-05-01 | 西南石油大学 | Hollow rolling and sliding composite bearing for rock bit |
| US9869134B2 (en) | 2013-03-14 | 2018-01-16 | Mitsubishi Materials Corporation | Drilling tool |
| CN104968882A (en) * | 2013-03-14 | 2015-10-07 | 三菱综合材料株式会社 | Digging tool |
| CN107620571A (en) * | 2017-11-03 | 2018-01-23 | 西南石油大学 | A kind of casing failure well reparation long-life composite drill bit |
| CN110792391A (en) * | 2018-08-01 | 2020-02-14 | 中国石油化工股份有限公司 | High-temperature resistant jet impactor |
| CN109386236A (en) * | 2018-10-16 | 2019-02-26 | 西南石油大学 | A kind of Customised corneal ablation formula tricone bit |
| CN109386236B (en) * | 2018-10-16 | 2020-11-24 | 西南石油大学 | Personalized cutting type tricone bit |
| CN114320163A (en) * | 2022-03-14 | 2022-04-12 | 西南石油大学 | Sealing element for roller bit and roller bit |
| CN114320163B (en) * | 2022-03-14 | 2022-05-10 | 西南石油大学 | Sealing element for roller bit and roller bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110420 Effective date of abandoning: 20130605 |
|
| RGAV | Abandon patent right to avoid regrant |