CN108360979B - Split single-cone bit - Google Patents
Split single-cone bit Download PDFInfo
- Publication number
- CN108360979B CN108360979B CN201810495883.6A CN201810495883A CN108360979B CN 108360979 B CN108360979 B CN 108360979B CN 201810495883 A CN201810495883 A CN 201810495883A CN 108360979 B CN108360979 B CN 108360979B
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- China
- Prior art keywords
- cone
- oil guide
- bit
- plug pin
- sealing ring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to a split single-cone bit which mainly comprises a tooth claw, a cone lower body, a cone upper body, teeth, gauge teeth, steel balls, a plug pin, a nozzle tip, an oil plug and a rectangular sealing ring. The tooth claw is connected with the cone lower body and the cone upper body through the bit leg shaft necks with the lower ends offset, and the cone lower body and the cone upper body revolve along with the bit body in the drilling process and rotate around the bit leg shaft necks respectively so as to realize the task of scraping and breaking rocks. The split single-cone bit adopts a split structure, tooth scraping efficiency of the small end gear ring and the middle gear ring is improved, rock breaking efficiency of the bit is improved, and the cone lower body and the cone upper body are of cone structures, so that the split single-cone bit is suitable for breaking harder stratum, and effective service life of the split single-cone bit is prolonged.
Description
Technical Field
The invention relates to a split single cone bit used in the fields of petroleum drilling and geological exploration.
Background
So far, the drill bit with the widest stratum application range is still a roller bit, and particularly, the drill bit can only be used for drilling hard stratum and strong abrasive stratum. The single-cone bit and the tri-cone bit belong to cone type bit, but the difference of the two is not only the difference in the number of the cones, and the single-cone bit has unique advantages, is more suitable for rock formations with high strength and plasticity than the tri-cone bit, and is also suitable for hard interlayers and other complex formations which are difficult to cope with by PDC bits.
The single cone bit mainly comprises a bit body and a cone, wherein the bit body is connected with the cone through a bit leg shaft neck with the lower end offset, and the cone revolves along with the bit body and rotates around the bit leg shaft neck during operation so as to realize the task of scraping and breaking rocks. The ring gear near the bottom of the cone is commonly referred to as the cone large end ring gear, the large end ring gear for short, and the portion near the top of the cone is referred to as the cone small end ring gear for short. Currently, single cone drill bits that have been used in practice have only one cone body, i.e., the cone body has only one rotational speed when rotating around the leg shaft journal, resulting in a certain law of tooth scraping efficiency from the small end ring gear to the large end ring gear: the tooth scraping efficiency of the small end gear ring is the lowest, the tooth scraping efficiency of the large end gear ring is the highest, and the tooth scraping efficiency of the middle gear ring is between the small end gear ring and the large end gear ring, which has an influence on the rock breaking efficiency of the single cone bit.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art and provides the split single cone bit which can crush harder stratum and has wider application range.
The technical scheme of the invention is as follows: the split single-cone bit mainly comprises a tooth claw, a gauge tooth, a nozzle tip, a rectangular sealing ring a, a cone lower body, a steel ball a, a plug pin a, a rectangular sealing ring b, a plug pin b, a cone upper body, a rectangular sealing ring c, a lower nozzle, an oil blocking plug, a steel ball b, a rectangular sealing ring d, teeth and an upper nozzle, and is characterized in that: the tooth claw is provided with a gauge tooth, a tooth leg journal, a mud channel a and a mud channel b, the tooth leg journal is provided with an oil guide hole a, an oil guide hole b, an oil guide hole c and an oil guide hole d, the oil nozzle is arranged at the outer port of the oil guide hole a, the oil blocking plug is arranged at the outer port of the oil guide hole b, and the upper nozzle is arranged at the outlet of the mud channel b; teeth are inlaid in the lower cone body and the upper cone body, a rectangular sealing ring a and a rectangular sealing ring b are respectively arranged in an inner ring a of the lower cone body and an inner ring b of the lower cone body, a rectangular sealing ring c and a rectangular sealing ring d are respectively arranged in an inner ring d of the upper cone body and an inner ring c of the upper cone body, then the lower cone body and the upper cone body are sleeved into shaft pins in sequence, then a steel ball a is placed in a plug pin hole a, a steel ball b is placed in a plug pin hole b, finally a plug pin a is arranged in the plug pin hole a, a plug pin b is arranged in the plug pin hole b, and a lower nozzle is arranged at an outlet at the front end of the upper cone body.
The oil blocking plug and the oil guide hole b, the plug pin a and the plug pin hole a, and the plug pin b and the plug pin hole b in the scheme are in interference fit; the oil guide holes a are axially arranged from the back of the tooth claw, and the number of the oil guide holes a is 1; the oil guide holes b are axially arranged from the front end of the shaft neck of the bit leg, and the number of the oil guide holes is 1; the oil guide holes c and the oil guide holes d are uniformly distributed along the circumferential direction at the positions of channels on the shaft neck of the bit leg, and the number of the oil guide holes c and the oil guide holes d is 2; the oil guide hole a, the oil guide hole b, the oil guide hole c, the oil guide hole d and a channel on the shaft neck of the bit leg form an oil guide channel, and lubricating oil can be replaced periodically through the oil nozzle.
The cone lower body and the cone upper body in the scheme are conical steel bodies, a tiny gap exists between the front end face of the cone lower body and the rear end face of the cone upper body, and the end faces are subjected to strengthening treatment, so that the cone lower body and the cone upper body are good in wear resistance; the teeth are hard alloy teeth; the leg shaft neck of the tooth claw is subjected to strengthening treatment, so that the tooth claw has high strength and good impact resistance toughness.
The rectangular sealing ring a, the rectangular sealing ring b, the rectangular sealing ring c and the rectangular sealing ring d in the scheme are all metal sealing rings, and the surface of the sealing ring is subjected to strengthening treatment, so that the wear resistance of the sealing ring is good.
The beneficial effects of the invention are as follows: (1) The split single-cone bit adopts a split structure, and in the drilling process, the upper cone body and the lower cone body respectively rotate around the shaft neck of the bit leg, so that the tooth scraping efficiency of the small end gear ring and the middle gear ring is improved, and the speed and efficiency are improved; (2) The cone upper body and the cone lower body are both conical steel bodies, and the stress and rock breaking modes at the bottom of the well are different, so that the cone upper body and the cone lower body are suitable for breaking harder stratum, and are beneficial to prolonging the effective service life of the harder stratum; (3) The bearing leg journal is subjected to strengthening treatment, so that the bearing leg journal is high in strength and good in impact resistance and toughness, and the oil guide channel arranged on the bearing leg journal can provide a good lubricating environment.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is an enlarged view of section I of FIG. 1 in accordance with the present invention.
FIG. 3 is a schematic view of the structure of the cone lower body of the present invention.
FIG. 4 is a schematic view of the structure of the cone upper body of the present invention.
Fig. 5 is a schematic view of the structure of the pawl according to the present invention.
The three-dimensional oil-retaining ring is characterized by comprising the following components of a tooth claw 1, a diameter-retaining tooth 2, an oil nozzle 3, a rectangular sealing ring a, a tooth bottom body 5, a steel ball a, a plug pin a,8, a rectangular sealing ring b,9, a plug pin b,10, a tooth top body 11, a rectangular sealing ring c,12, a lower nozzle 13, an oil plug 14, a steel ball b,15, a rectangular sealing ring d,16, teeth 17, an upper nozzle 18, a tooth bottom inner ring a,19, a plug pin hole a,20, a tooth bottom inner ring b,21, a tooth top inner ring c,22, a tooth top inner ring d,23, a plug pin hole b,24, an oil guide hole a,25, an oil guide hole b,26, an oil guide hole c,27, an oil guide hole d,28, a tooth leg, 29, a mud channel a and 30, and a mud channel b.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to the drawings, the split single cone bit is characterized in that: the split single-cone bit mainly comprises a tooth claw 1, a gauge tooth 2, a nipple 3, a rectangular sealing ring a4, a cone lower body 5, a steel ball a6, a plug pin a7, a rectangular sealing ring b8, a plug pin b9, a cone upper body 10, a rectangular sealing ring c11, a lower nozzle 12, an oil blocking plug 13, a steel ball b14, a rectangular sealing ring d15, teeth 16 and an upper nozzle 17, and is characterized in that: the tooth claw 1 is provided with a gauge tooth 2, a bit leg shaft neck 28, a mud channel a29 and a mud channel b30, the bit leg shaft neck 28 is provided with an oil guide hole a24, an oil guide hole b25, an oil guide hole c26 and an oil guide hole d27, the oil nozzle 3 is arranged at the outer port of the oil guide hole a24, the oil blocking plug 13 is arranged at the outer port of the oil guide hole b25, the upper nozzle 17 is arranged at the outlet of the mud channel b30, the lower cone body 5 and the upper cone body 10 are inlaid with teeth 16, the rectangular sealing ring a4 and the rectangular sealing ring b8 are respectively arranged at the inner cone ring a18 and the lower cone inner ring b20, the rectangular sealing ring c11 and the rectangular sealing ring d15 are respectively arranged at the inner cone upper cone inner ring d22 and the upper cone inner ring c21, the lower cone body 5 and the upper cone body 10 are sleeved in sequence into the bit leg shaft neck 28, then the steel ball a6 is placed into the plug pin hole a19, the steel ball b14 is placed into the plug pin hole b23, finally the plug pin a7 is arranged in the plug pin hole a19, the plug pin b9 is arranged in the pin hole b23, and the lower nozzle 12 is arranged at the front of the outlet of the upper nozzle body 10.
The oil blocking plug 13 is in interference fit with the oil guide hole b25, the plug pin a7 is in interference fit with the plug pin hole a19, and the plug pin b9 is in interference fit with the plug pin hole b 23; the oil guide holes a24 are axially arranged from the back of the tooth claw 1, and the number of the oil guide holes is 1; the oil guide holes b25 are axially arranged from the front end of the bit leg journal 28, and the number of the oil guide holes is 1; the oil guide holes c26 and d27 are uniformly distributed along the circumferential direction at the channels on the bit leg shaft neck 28, and the number of the oil guide holes is 2; the oil guide holes a24, b25, c26 and d27 and the channels on the bit leg journals 28 form oil guide channels, and lubricating oil can be replaced periodically through the oil nozzle 3.
The cone lower body 5 and the cone upper body 10 are conical steel bodies, a tiny gap exists between the front end face of the cone lower body 5 and the rear end face of the cone upper body 10, and the end faces are subjected to strengthening treatment, so that the cone lower body has good wear resistance; tooth 16 is a cemented carbide tooth; the leg shaft neck 28 of the tooth claw 1 is strengthened, and has high strength and good impact resistance.
The rectangular sealing rings a4, b8, c11 and d15 are metal sealing rings, and the surfaces of the sealing rings are subjected to strengthening treatment, so that the wear resistance is good.
The claw 1 of the split single-cone bit is connected with the cone lower body 5 and the cone upper body 10 through the bit leg shaft neck 28 with the offset lower end, the cone lower body 5 and the cone upper body 10 revolve along with the bit body during operation and rotate around the bit leg shaft neck 28 respectively so as to realize the task of scraping and crushing rocks, the tooth scraping efficiency of the small end gear ring and the middle gear ring is improved, the rock breaking efficiency of the bit is improved, and the cone lower body 5 and the cone upper body 10 adopt cone structures, are suitable for crushing harder strata and are beneficial to prolonging the effective service life of the harder strata.
Claims (2)
1. The utility model provides a split type single cone bit, includes tooth claw (1), gauge tooth (2), glib (3), rectangular seal circle a (4), cone lower part (5), steel ball a (6), stopper round pin a (7), rectangular seal circle b (8), stopper round pin b (9), cone upper part (10), rectangular seal circle c (11), lower nozzle (12), oil plug (13), steel ball b (14), rectangular seal circle d (15), tooth (16), last nozzle (17), characterized by: the tooth claw (1) is provided with a gauge tooth (2), a bit leg shaft neck (28), a slurry channel a (29) and a slurry channel b (30), the bit leg shaft neck (28) is provided with an oil guide hole a (24), an oil guide hole b (25), an oil guide hole c (26) and an oil guide hole d (27), a nozzle tip (3) is arranged at the outer port of the oil guide hole a (24), an oil blocking plug (13) is arranged at the outer port of the oil guide hole b (25), and an upper nozzle (17) is arranged at the outlet of the slurry channel b (30); teeth (16) are inlaid in the lower cone body (5) and the upper cone body (10), a rectangular sealing ring a (4) and a rectangular sealing ring b (8) are respectively arranged on an inner ring a (18) of the lower cone body and an inner ring b (20) of the lower cone body, a rectangular sealing ring c (11) and a rectangular sealing ring d (15) are respectively arranged on an inner ring d (22) of the upper cone body and an inner ring c (21) of the upper cone body, the lower cone body (5) and the upper cone body (10) are sleeved into a bit leg journal (28) in sequence, then a steel ball a (6) is placed into a plug pin hole a (19), a steel ball b (14) is placed into a plug pin hole b (23), finally a plug pin a (7) is arranged in the plug pin hole a (19), a plug pin b (9) is arranged in the plug pin hole b (23), and a lower nozzle (12) is arranged at the front end outlet of the upper cone body (10); the rectangular sealing ring a (4), the rectangular sealing ring b (8), the rectangular sealing ring c (11) and the rectangular sealing ring d (15) are all metal sealing rings, and the surface of the sealing rings is subjected to strengthening treatment, so that the wear resistance is good; the cone lower body (5) and the cone upper body (10) are conical steel bodies, a tiny gap exists between the front end surface of the cone lower body (5) and the rear end surface of the cone upper body (10), and the end surfaces are subjected to strengthening treatment, so that the cone lower body has good wear resistance; the teeth (16) are hard alloy teeth; the leg shaft neck (28) of the tooth claw (1) is subjected to strengthening treatment, and has high strength and good impact resistance toughness.
2. The split single cone drill bit of claim 1, wherein: the oil blocking plug (13) is in interference fit with the oil guide hole b (25), the plug pin a (7) is in interference fit with the plug pin hole a (19), and the plug pin b (9) is in interference fit with the plug pin hole b (23); the oil guide holes a (24) are axially arranged from the back of the tooth claw (1) and the number of the oil guide holes is 1; the oil guide holes b (25) are axially arranged from the front end of the bit leg shaft neck (28) and are 1 in number; the oil guide holes c (26) and the oil guide holes d (27) are uniformly distributed along the circumferential direction at the channels on the bit leg shaft neck (28), and the number of the oil guide holes is 2; the oil guide hole a (24), the oil guide hole b (25), the oil guide hole c (26), the oil guide hole d (27) and a channel on the bit leg journal (28) form an oil guide channel, and lubricating oil is replaced periodically through the oil nozzle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495883.6A CN108360979B (en) | 2018-05-22 | 2018-05-22 | Split single-cone bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495883.6A CN108360979B (en) | 2018-05-22 | 2018-05-22 | Split single-cone bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108360979A CN108360979A (en) | 2018-08-03 |
| CN108360979B true CN108360979B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810495883.6A Active CN108360979B (en) | 2018-05-22 | 2018-05-22 | Split single-cone bit |
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| CN (1) | CN108360979B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11566473B2 (en) * | 2018-05-29 | 2023-01-31 | Quanta Associates, L.P. | Horizontal directional reaming |
| US11708726B2 (en) * | 2018-05-29 | 2023-07-25 | Quanta Associates, L.P. | Horizontal directional reaming |
| CN110043193A (en) * | 2019-05-28 | 2019-07-23 | 西南石油大学 | Split type single cone PDC composite drill bit |
| CN111411900A (en) * | 2020-03-13 | 2020-07-14 | 西南石油大学 | Combined type strong cutting single cone bit |
| CN111894463A (en) * | 2020-07-17 | 2020-11-06 | 中国石油大学(北京) | Diamond and single cone composite drill bit for drilling hard formation |
| CN111963060A (en) * | 2020-08-26 | 2020-11-20 | 盐城加美机电科技有限公司 | Low nozzle holder roller bit |
Family Cites Families (12)
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| CN1128290C (en) * | 2000-12-13 | 2003-11-19 | 江汉石油钻头股份有限公司 | Bearing sealing structure for rotary drill bit |
| CN1164858C (en) * | 2001-04-13 | 2004-09-01 | 江汉石油钻头股份有限公司 | Hydraulic structure of single gear wheel drilling bit |
| US20050109543A1 (en) * | 2003-07-01 | 2005-05-26 | George Witman | Cutting element arrangement for single roller cone bit |
| US7128171B2 (en) * | 2004-02-23 | 2006-10-31 | Baker Hughes Incorporated | Hydrodynamic pump passages for rolling cone drill bit |
| US7320375B2 (en) * | 2005-07-19 | 2008-01-22 | Smith International, Inc. | Split cone bit |
| WO2010093340A2 (en) * | 2009-02-16 | 2010-08-19 | Kupchinsky Igor Aleksandrovich | Sealed bearing for a drilling bit rolling cutter |
| CN201679448U (en) * | 2010-05-20 | 2010-12-22 | 天津立林钻头有限公司 | High rotating speed high pressure resistant impact-resistance roller bit |
| CN102022084B (en) * | 2010-12-30 | 2013-01-02 | 西南石油大学 | Compound single cone bit |
| CN102628338B (en) * | 2011-06-20 | 2014-06-11 | 成都盛帮密封件股份有限公司 | Novel roller bit sealing ring |
| CN102678050B (en) * | 2012-05-18 | 2015-10-28 | 西南石油大学 | A kind of have the gear wheel composite drill bit impacting cutting structure |
| CN103233682B (en) * | 2013-04-12 | 2015-09-30 | 成都保瑞特钻头有限公司 | The rock bit lubricating system of Micro-positive pressure auto-compensation |
| CN208252037U (en) * | 2018-05-22 | 2018-12-18 | 西南石油大学 | Split type single-cone rotary drill bit |
-
2018
- 2018-05-22 CN CN201810495883.6A patent/CN108360979B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 扭力冲击器在大庆油田肇深17井的试验应用;李欢欢;王玉玺;李秋杰;;探矿工程(岩土钻掘工程)(第04期);全文 * |
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| CN108360979A (en) | 2018-08-03 |
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Effective date of registration: 20230620 Address after: 610500, Xindu Avenue, Xindu District, Sichuan, Chengdu, 8 Applicant after: SOUTHWEST PETROLEUM University Applicant after: Nantong Xieming Technology Co.,Ltd. Applicant after: Sichuan Huming Technology Co.,Ltd. Address before: 610500, Xindu Avenue, Xindu District, Sichuan, Chengdu, 8 Applicant before: SOUTHWEST PETROLEUM University |
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