CN101886523A - High-strength and wear-resistant roller bit - Google Patents
High-strength and wear-resistant roller bit Download PDFInfo
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- CN101886523A CN101886523A CN2010102279266A CN201010227926A CN101886523A CN 101886523 A CN101886523 A CN 101886523A CN 2010102279266 A CN2010102279266 A CN 2010102279266A CN 201010227926 A CN201010227926 A CN 201010227926A CN 101886523 A CN101886523 A CN 101886523A
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Abstract
The invention discloses a high-strength and wear-resistant roller bit for petroleum and gas drilling. The roller bit comprises teeth (1), a roller cone (2) and a roller palm (3) and is characterized in that an embedded ring (4) is arranged at the internal bottom end of the roller cone (2), the embedded ring (4) and the roller cone (2) are connected in the compound manner of hot embedding, a bush (5) is arranged on the internal wall of the roller cone (2), the bush (5) and the roller cone (2) are connected in the compound manner of hot embedding, a compound seal ring (6) is hot embedded between the roller cone (2) and the outermost edge of the roller palm (3), the embedded ring (4) and the bush (5) are made from ceramic materials of carbide, nitride or oxide, and the seal ring (6) is made from cermets or the ceramic materials. Ceramics, cermets and the bit are skillfully combined into a whole, the ceramics and the cermets are not only utilized as connecting pieces, but also play the role of protecting the bit; high strength, wear resistance and corrosion resistance of the ceramics are displayed, and service life and reliability of bit parts are also ensured.
Description
Technical field:
The present invention relates to the rock bit technical field, is a kind of high-strength and wear-resistant roller bit specifically, is applicable to oil and natural pneumatic drill well system.
Technical background:
Along with the development of petroleum industry, research both at home and abroad improves, multiple nonpetroleum rig has been innovated in exploitation.In order to adapt to the exploration and the exploitation of different areas oil-gas reservoirs such as shallow sea, seabeach, desert and hills, various types of oil bits have successively been developed.Oil bit is the important tool of oil drilling, and the quality of its service behaviour will directly influence drilling quality, drilling efficiency and drilling cost.What application was maximum in present oil drilling and the geological drilling is rock bit.Because rock bit has the effect of impact, crushing and shearing-crushing formation rock when rotated, thus it can adapt to soft, in, hard various stratum.But, the requirement of equipment and service life is also improved constantly along with the harshness of environmental requirement.
Traditional steel drill bit rotates fractured rock in the shaft bottom by gear wheel, its stress complexity, should bear static load, bear dynamic load and oscillating load again, also be subjected to the erosion of mud and the influence of shaft bottom HTHP simultaneously, particularly under the condition of high drilling speed and high the pressure of the drill during drilling well, gear wheel and bit leg contact portion very easily produce adhesive wear or interlock, cause the drill bit premature failure.Therefore, drill bit material is required to have high intensity and high toughness, the particularly abrasion resistance that will have high hardness to become reconciled.
Relevant gear wheel oil bit structure and material aspect, existing a large amount of patents and research paper report, and pluses and minuses are respectively arranged.As the utility model " a kind of journal bearing bit " (notification number CN2571987) of Heilungkiang Daqing oil field application and the utility model " a kind of rock bit sliding bearing " (notification number CN2438829) of Hanjiang Petroleum drill stock Co., Ltd, " a kind of slide bushing bearing arrangement rock bit " (notification number CN2424294), " rolling bearing rock bit " (notification number CN2514109) and patent of invention " cone bit bearing sealing device " patents such as (notification number CN1436914) have all adopted lining, but lagging material is Hardmetal materials, because drill bit is at high drilling speed, under the working condition of high the pressure of the drill, require it to have higher abrasion resistance, therefore, its abrasion resistance is relatively poor, in addition, Hardmetal materials all adopts the mode of built-up welding to be connected on the drill bit, and drill bit is when high speed rotating, can be subjected to bigger shearing force, material in the built-up welding is easily come off, shortened the service life of drill bit.
In addition, the utility model of Hanjiang Petroleum drill stock Co., Ltd's application and patent of invention " high-strength wear-resistant polydonita wheel drill bit " (notification number CN2653111) and (notification number CN1540130) are improved the gear wheel surface, promptly adopt different tip configuration gear wheels to constitute polydonita wheel drill bit, and do not considered wearing and tearing and interlock problem between gear wheel and the bit leg.
Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned prior art, and a kind of high-strength and wear-resistant roller bit is provided, mainly solve the easy generation brittle fracture in drilling process of existing oil bit and cause short this bottleneck difficult problem of life-span.
In order to achieve the above object, the present invention is achieved in that high-strength and wear-resistant roller bit, it comprises tooth, gear wheel and bit leg, its special character is that the edge ring is established in the bottom in the gear wheel, the two adopts heat to inlay the complex method connection, establishes lining on the gear wheel inwall, and the two adopts heat to inlay the complex method connection, heat is inlayed composite sealing ring between gear wheel and bit leg outermost edge, plays sealing function; Described edge ring and lining adopt ceramic materials, and sealing ring adopts cermet or ceramic materials; Above-mentioned heat is inlayed complex method and is required processing and assembly precision all to want high, calculate prestressing force by mechanics of materials thick cyclinder model, thereby select suitable fitting allowance to apply prestressing force for ceramic chamber lining and gear wheel steel and resist the shearing stress that drill bit rotates, prevent that ceramic chamber lining from sliding, overcome the problem that brittle fracture easily takes place ceramic materials in drilling process.
High-strength and wear-resistant roller bit of the present invention, its described edge ring and lining adopt a kind of in silicon nitride, carborundum or the oxide ceramic material, its intensity height, wear-resistant, and has a certain toughness, can overcome corresponding stress between gear wheel, bit leg, effectively improve bite-resistant ability and supporting capacity between gear wheel and bit leg, and the application life of improving drill bit, drilling cost reduced; Sealing ring adopts a kind of in nitride, carbide cermet or the ceramic materials, replace traditional rubber seal and metal o-ring, it is reliable to have the drill bit sealing, the down-hole is longer service time, and can effectively prevent the erosion characteristics of S2-, F-, H+ etc. in the oil, particularly can prevent drill bit shaft bottom mud drum when using water-base mud, be optimum a kind of drilling tool in the drilling well high-end applications.
Compared with the prior art high-strength and wear-resistant roller bit of the present invention has outstanding substantive distinguishing features and marked improvement: 1, heat is inlayed the composite ceramic material parts between gear wheel and bit leg parts, replace traditional steel material, solved the problem of original bit cone serious wear, and ceramic chamber lining is difficult for broken, effectively improves the drilling life of drill bit; 2, adopt cermet or ceramic seal circle to replace traditional rubber, metal material, the drill bit sealing is reliable, the down-hole is longer service time, and can effectively prevent the erosion of S2-, F-, H+ etc. in the oil, particularly when using water-base mud, can prevent drill bit shaft bottom mud drum, effectively improve the corrosion resistance of drill bit, improved the application life and the reliability of drill bit, thereby reduced cost for oil production; 3, adopt heat to inlay compound mode and replace traditional built-up welding connected mode, significantly improved the mar proof between gear wheel and bit leg; 4 and adopt heat to inlay the compound combination that applies compressive pre-stress, overcome the weakness of ceramic materials toughness deficiency, the scope of application of reaming bit makes it be promoted on the stratum harder, that abrasion is stronger and changeable significantly.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
The specific embodiment:
In order to understand better and to implement, embodiments of the invention are described further below in conjunction with accompanying drawing:
Embodiment 1, referring to Fig. 1, is processed into gear wheel 2, and tooth 1 is installed on gear wheel 2, according to the design needs, with gear wheel 2 inner ring bottoms and inwall respectively car remove 2～6mm thickness; Adopt the carbofrax material of high-strength wearable to make pottery edge ring 4, thickness should be 2～6mm mutually, and roughness is 0.8 μ m, is shaped as cylindric; Adopt the silicon nitride material of high-strength wearable to make ceramic chamber lining 5, thickness is 2～6mm, and roughness is 0.8 μ m, is shaped as cylindric; Adopt the titanium carbide ceramic material of wear-and corrosion-resistant to make cermet sealing ring 6, thickness is 2～6mm, and roughness is 0.8 μ m, is shaped as cylindric; Adopting heat to inlay complex method on the pottery edge ring 4 that processes is connected with the interior bottom of gear wheel 2, adopts heat to inlay complex method on the inwall of gear wheel 2 and connect ceramic chamber lining 5; Inner chamber at gear wheel 2 is installed bit leg 3, and heat is inlayed composite cermet sealing ring 6 between gear wheel 2 and bit leg 3 outermost edge, makes high-strength and wear-resistant roller bit.Above-mentioned pottery edge ring 4, ceramic chamber lining 5 are inlayed compound mode with having adopted heat being connected of cermet sealing ring 6 and gear wheel 2, this recombination process requires processing and assembly precision all to want high, calculate prestressing force by mechanics of materials thick cyclinder model, thereby select suitable fitting allowance to apply prestressing force for ceramic chamber lining and gear wheel steel and resist the shearing stress that drill bit rotates, prevent that ceramic chamber lining from sliding, overcome the problem that brittle fracture easily takes place ceramic materials in drilling process.
Embodiment 2, and with embodiment 1, difference is to adopt the alumina material of high-strength wearable to make pottery edge ring 4, adopts the carbofrax material of high-strength wearable to make ceramic chamber lining 5, adopts the zirconia ceramics material of wear-and corrosion-resistant to make cermet sealing ring 6.
Embodiment 3, and with embodiment 1, difference is to adopt the zirconia material of high-strength wearable to make pottery edge ring 4, adopts the alumina material of high-strength wearable to make ceramic chamber lining 5, adopts the silicon-carbide metal ceramic materials of wear-and corrosion-resistant to make cermet sealing ring 6.
High-strength and wear-resistant roller bit of the present invention during work, is connected drill bit with drill string, drill string drives drill bit by mechanical rotation, transmits required mechanical energy and the pressure of the drill of fractured rock, carries out high drilling speed and creeps into.The application life of carbide alloy tooth is all more than 200 hours at present, and drill bit is because the wearing and tearing of its gear wheel and bit leg, most of application life is less than 60 hours all, high-strength and wear-resistant roller bit of the present invention, reached more than 150 hours the application life of drill bit, basic synchronous with tooth life, not only improved drilling efficiency, and the reduction cost for oil production.
Claims (2)
1. high-strength and wear-resistant roller bit, it comprises tooth (1), gear wheel (2) and bit leg (3), it is characterized in that the interior bottom of gear wheel (2) establishes edge ring (4), the two adopts heat to inlay the complex method connection, on gear wheel (2) inwall, establish lining (5), the two adopts heat to inlay the complex method connection, and heat is inlayed composite sealing ring (6) between gear wheel (2) and bit leg (3) outermost edge; Described edge ring (4) and lining (5) adopt ceramic materials, and sealing ring (6) adopts cermet or ceramic materials.
2. high-strength and wear-resistant roller bit according to claim 1, it is characterized in that described edge ring (4) and lining (5) adopt a kind of in silicon nitride, carborundum or the oxide ceramic material, sealing ring (6) to adopt a kind of in nitride, carbide cermet or the ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102279266A CN101886523A (en) | 2010-07-14 | 2010-07-14 | High-strength and wear-resistant roller bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102279266A CN101886523A (en) | 2010-07-14 | 2010-07-14 | High-strength and wear-resistant roller bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101886523A true CN101886523A (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102279266A Pending CN101886523A (en) | 2010-07-14 | 2010-07-14 | High-strength and wear-resistant roller bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101886523A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826752A (en) * | 2012-08-23 | 2012-12-19 | 北京大清生物技术有限公司 | Bioactive mineral powder containing quasi-nanometer particles, preparation method and application thereof in dental treatment |
| CN103850652A (en) * | 2014-03-27 | 2014-06-11 | 湖南易通矿山工程机械有限公司 | Process for inlaying alloy teeth of rock drilling bit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2454521Y (en) * | 2000-11-17 | 2001-10-17 | 江汉石油钻头股份有限公司 | Slip-in structure gear-wheel |
| CN1094167C (en) * | 1999-09-06 | 2002-11-13 | 江汉石油钻头股份有限公司 | Roller bit with solid lubricant layer |
| US20060042789A1 (en) * | 2004-08-27 | 2006-03-02 | Zbigniew Kubala | Washpipe seal assembly |
-
2010
- 2010-07-14 CN CN2010102279266A patent/CN101886523A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094167C (en) * | 1999-09-06 | 2002-11-13 | 江汉石油钻头股份有限公司 | Roller bit with solid lubricant layer |
| CN2454521Y (en) * | 2000-11-17 | 2001-10-17 | 江汉石油钻头股份有限公司 | Slip-in structure gear-wheel |
| US20060042789A1 (en) * | 2004-08-27 | 2006-03-02 | Zbigniew Kubala | Washpipe seal assembly |
Non-Patent Citations (2)
| Title |
|---|
| 徐志跃等: "新型材料在牙轮钻头轴承中的应用", 《西南石油学院学报》 * |
| 陈家庆等: "牙轮钻头滑动衬套轴承结构和材料", 《石油机械》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826752A (en) * | 2012-08-23 | 2012-12-19 | 北京大清生物技术有限公司 | Bioactive mineral powder containing quasi-nanometer particles, preparation method and application thereof in dental treatment |
| CN102826752B (en) * | 2012-08-23 | 2015-07-15 | 北京大清生物技术有限公司 | Bioactive mineral powder containing quasi-nanometer particles, preparation method and application thereof in dental treatment |
| CN103850652A (en) * | 2014-03-27 | 2014-06-11 | 湖南易通矿山工程机械有限公司 | Process for inlaying alloy teeth of rock drilling bit |
| CN103850652B (en) * | 2014-03-27 | 2015-11-18 | 湖南易通矿山工程机械有限公司 | A kind of rock bit carbide button mosaic technology |
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Application publication date: 20101117 |