CN103266855B - Cone bit with base plane debris discharging function - Google Patents
Cone bit with base plane debris discharging function Download PDFInfo
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- CN103266855B CN103266855B CN201210287089.5A CN201210287089A CN103266855B CN 103266855 B CN103266855 B CN 103266855B CN 201210287089 A CN201210287089 A CN 201210287089A CN 103266855 B CN103266855 B CN 103266855B
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- baseplane
- bit
- debris
- gear wheel
- removal function
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Abstract
The invention relates to a cone bit with a base plane debris discharging function, which is used for oil and gas drilling. The cone bit comprises cones and legs. The legs are connected with the cones through leg journals at the lower ends of the legs. The cone bit is characterized in that annular debris scraping grooves are formed in the base planes of the cones; debris discharging grooves communicated with the debris scraping grooves are formed at the peripheries of the debris scraping grooves; and debris scrapers corresponding to the debris scraping grooves are arranged on the end faces, which are opposite to the base planes of the cones, of the root parts of the leg journals at the lower ends of the legs. According to the cone bit, the annular debris scraping grooves are circumferentially formed in the base planes of the cones, and are matched and connected with a plurality of debris discharging grooves, and when the cones rotate at high speed, debris entering the base planes is scraped through the debris scrapers, and is extruded into the debris discharging grooves through inclined wedge surfaces to be guided out of contact surfaces, so that the further invasion of the debris can be effectively avoided, the sealing of the bit and bearings are protected, and a better sealing protection function is realized to prolong the service life of the bearings. The cone bit is particularly suitable for the deflection of an extended reach horizontal well.
Description
Technical field
The present invention relates to a kind of for oil, gas drilling and mining drilling applications rock bit, be specifically related to a kind of rock bit with baseplane chip removal function.
Background technology
Extended reach well horizontal well generally uses in each oil field, in drilling well deflecting (especially using heavy camber screw rod deflecting) process, gear wheel by borehole wall thrust and occur regular in move, landwaste string is caused to enter between gear wheel baseplane and bit leg C point face, and progressively in invade and enter sealing, accelerate sealing wear, and then enter bearing and make bearing failure.Mostly therefore, there is bearing initial failure in existing rock bit; have studded with the things such as the carbide button of scraping for alleviating this situation on bit leg C point face; certain protective effect can be served; but discharge that the landwaste swept is omnidirectional; a part still can continue to sealing close, the wearing and tearing of aggravation sealing.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that exists for above-mentioned prior art and provides a kind of rock bit with baseplane chip removal function, it can chip removal in time, reduce sealing wear, thus improve the application life of cone bit bearing, be particularly suited for directional well deflecting.
The technical scheme that the problem that the present invention is the above-mentioned proposition of solution adopts is: include gear wheel and bit leg, bit leg is connected with gear wheel by the bit leg journel of its lower end, it is characterized in that on gear wheel baseplane, offer annular scrapes bits groove, the chip area with its conducting is offered in the periphery of scraping bits groove, and in bit leg lower end, bit leg journel root end face (the bit leg C point face) correspondence of relative gear wheel baseplane is scraped and considered groove to be worth doing and install and scrape bits device.
By such scheme, it is that the column being embedded in bit leg journel root end face scrapes bits tooth that device is considered in described scraping to be worth doing.
By such scheme, described column is scraped bits tooth upper end and is provided with a wedge surface, and described wedge surface is towards gear wheel direction of rotation and to extrinsic deflection 5 ° ~ 60 °.
By such scheme, described annular scrapes bits slot in 1 ∕ 4 to 3 ∕ 4 scope of gear wheel baseplane radial width.
By such scheme, described annular scrapes bits groove radial width 2 ~ 5mm, the degree of depth 1 ~ 5mm.
By such scheme, described chip area is laid along circumference interval, gear wheel baseplane, and scrape bits groove periphery by annular and extend to gear wheel back cone, described chip area is to side deflection, and skew direction rotates contrary with gear wheel.
By such scheme, described chip area is straight trough, crank slot or deep-slotted chip breaker.
By such scheme, the straight line line of described chip area two ends is 10 ° ~ 70 ° with the angle of the radius extended line crossing chip area inner termination.
By such scheme, described width of chip space 2 ~ 5mm, the degree of depth 1 ~ 5mm.
By such scheme, described chip area has 1 ~ 20.
Beneficial effect of the present invention is: 1, in bit leg lower end the bit leg journel root end face of relative gear wheel baseplane stud with one there is orientation scrape bits device, this is scraped bits device and scrapes bits position with cammed surface, scrapes bits device cammed surface towards gear wheel direction of rotation and to extrinsic deflection certain angle; Gear wheel baseplane circumferentially has annular and scrapes bits groove, and be furnished with multiple tracks chip area with scraping and consider groove to be worth doing and be connected, during gear wheel High Rotation Speed, first scrape bits device and the landwaste entering baseplane is swept, and by cammed surface, landwaste is clamp-oned chip area, thus landwaste is exported to outside contact surface.Can effectively avoid landwaste inwardly to invade further thus, protect drill bit sealing and bearing, reach good seal protection effect, thus improve the application life of bearing; 2, chip area is to side deflection, skew direction rotates contrary with gear wheel, the relative motion of gear wheel and bit leg end face has in the chip area of certain angle in relative gear wheel radial direction and produces similar vane pump effect, the kinetic force of the automatic dust lead produced better plays extruding landwaste, thus is exported in time outside contact surface by landwaste.The present invention is particularly suitable for the deflecting of extended reach well horizontal well.
Accompanying drawing explanation
Fig. 1 is the stereogram of one embodiment of the invention.
Fig. 2 is the partial enlarged drawing in Fig. 1, indicates the position of chip area.
Fig. 3 is the partial sectional view at position, one embodiment of the invention gear wheel baseplane.
Fig. 4 is the structure chart that bits device is scraped at the bit leg position of one embodiment of the invention.
Fig. 5 is the top view of Fig. 4.
Fig. 6 is the stereogram scraping bits device in one embodiment of the invention.
Fig. 7 is the gear wheel baseplane structure chart of curve chip area in one embodiment of the invention.
Fig. 8 is the gear wheel baseplane structure chart of another embodiment of the present invention cathetus chip area.
Detailed description of the invention
Embodiments of the invention are further illustrated below in conjunction with accompanying drawing.
For tricone bit, include three gear wheels 1 and three bit legs 2, bit leg is connected with gear wheel by the bit leg journel of its lower end, gear wheel and bit leg journel fit in bearing, bearing is locked by steel ball 9 and is prevented bearing from throwing off, and has sealing ring 10 bearing portions and outside to be separated inside gear wheel baseplane and between bit leg; Gear wheel studs with gauge compact 3, deburring tooth 4 and cutting teeth 5; Gear wheel baseplane is offered annular and scrapes bits groove 7, described annular scrapes bits slot in 1 ∕ 2 place of gear wheel baseplane radial width, the chip area 6 with its conducting is offered in the periphery of scraping bits groove, chip area is laid along circumference interval, gear wheel baseplane, scrape bits groove periphery by annular and extend to gear wheel back cone, described chip area is to side deflection, skew direction rotates contrary with gear wheel, described chip area is deep-slotted chip breaker, the straight line line of deep-slotted chip breaker two ends is 45 ° ~ 55 ° with the angle of the radius extended line crossing chip area inner termination, chip area circumferentially uniform 4; The width that described annular scrapes bits groove and chip area is 3mm, degree of depth 2mm.In bit leg lower end bit leg journel root end face (the bit leg C point face) correspondence of relative gear wheel baseplane scrape bits groove install scrape bits device 8, it is described that to scrape bits device be that the column being embedded in bit leg journel root end face scrapes bits tooth, described column is scraped bits tooth and is comprised cylindrical denticle 12, denticle upper end is provided with the wedge surface 11 of an inclination, and described wedge surface is towards gear wheel direction of rotation and to extrinsic deflection 40 °.
As shown in Figure 8, the main difference part of it and a upper embodiment is that described chip area is straight trough to another embodiment of the present invention, and other structure is identical with a upper embodiment.
Claims (9)
1. one kind has the rock bit of baseplane chip removal function, include gear wheel and bit leg, bit leg is connected with gear wheel by the bit leg journel of its lower end, it is characterized in that on gear wheel baseplane, offer annular scrapes bits groove, the chip area with its conducting is offered in the periphery of scraping bits groove, and in bit leg lower end, the bit leg journel root end face correspondence of relative gear wheel baseplane is scraped bits groove and installed and scrape bits device; Described chip area is laid along circumference interval, gear wheel baseplane, and scrape bits groove periphery by annular and extend to gear wheel back cone, described chip area is to side deflection, and skew direction rotates contrary with gear wheel.
2., by the rock bit with baseplane chip removal function according to claim 1, it is characterized in that device is considered in described scraping to be worth doing is that the column being embedded in bit leg journel root end face scrapes bits tooth.
3., by the rock bit with baseplane chip removal function according to claim 2, it is characterized in that described column is scraped bits tooth upper end and is provided with a wedge surface, described wedge surface is towards gear wheel direction of rotation and to extrinsic deflection 5 ° ~ 60 °.
4., by the rock bit with baseplane chip removal function described in claim 1 or 2, it is characterized in that described annular scrapes bits slot in 1 ∕ 4 to 3 ∕ 4 scope of gear wheel baseplane radial width.
5., by the rock bit with baseplane chip removal function according to claim 4, it is characterized in that described annular scrapes bits groove radial width 2 ~ 5mm, the degree of depth 1 ~ 5mm.
6., by the rock bit with baseplane chip removal function according to claim 1, it is characterized in that described chip area is straight trough or crank slot.
7., by the rock bit with baseplane chip removal function according to claim 6, it is characterized in that the straight line line of described chip area two ends is 10 ° ~ 70 ° with the angle of the radius extended line crossing chip area inner termination.
8., by the rock bit with baseplane chip removal function described in claim 6 or 7, it is characterized in that described width of chip space 2 ~ 5mm, the degree of depth 1 ~ 5mm; Described chip area has 1 ~ 20.
9. by the rock bit with baseplane chip removal function described in claim 1 or 2, it is characterized in that described rock bit is tricone bit, include three gear wheels and three bit legs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287089.5A CN103266855B (en) | 2012-08-14 | 2012-08-14 | Cone bit with base plane debris discharging function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210287089.5A CN103266855B (en) | 2012-08-14 | 2012-08-14 | Cone bit with base plane debris discharging function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103266855A CN103266855A (en) | 2013-08-28 |
| CN103266855B true CN103266855B (en) | 2015-06-10 |
Family
ID=49010509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210287089.5A Active CN103266855B (en) | 2012-08-14 | 2012-08-14 | Cone bit with base plane debris discharging function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103266855B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469446A (en) * | 2019-01-25 | 2019-03-15 | 沧州格锐特钻头有限公司 | A kind of rock bit with chip removal structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202731754U (en) * | 2012-08-14 | 2013-02-13 | 江汉石油钻头股份有限公司 | Roller bit with bottom plane chip-removal function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688651A (en) * | 1986-03-21 | 1987-08-25 | Dresser Industries, Inc. | Cone mouth debris exclusion shield |
| US7044242B2 (en) * | 2001-04-26 | 2006-05-16 | Halliburton Energy Services, Inc. | Roller cone bits with reduced packing |
| US7066287B2 (en) * | 2004-02-17 | 2006-06-27 | Baker Hughes Incorporated | Mud debris diverter for earth-boring bit |
| US7066286B2 (en) * | 2004-03-25 | 2006-06-27 | Baker Hughes Incorporated | Gage surface scraper |
| US7543660B2 (en) * | 2006-02-21 | 2009-06-09 | Halliburton Energy Services, Inc. | Roller cone drill bit with debris diverter plugs |
-
2012
- 2012-08-14 CN CN201210287089.5A patent/CN103266855B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202731754U (en) * | 2012-08-14 | 2013-02-13 | 江汉石油钻头股份有限公司 | Roller bit with bottom plane chip-removal function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103266855A (en) | 2013-08-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Jianghan Petroleum Drilling Bit Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180314 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: SINOPEC OILFIELD EQUIPMENT CORPORATION |