CN1165907A - Bit of preventing gear wheel from dropping off - Google Patents
Bit of preventing gear wheel from dropping off Download PDFInfo
- Publication number
- CN1165907A CN1165907A CN 96117558 CN96117558A CN1165907A CN 1165907 A CN1165907 A CN 1165907A CN 96117558 CN96117558 CN 96117558 CN 96117558 A CN96117558 A CN 96117558A CN 1165907 A CN1165907 A CN 1165907A
- Authority
- CN
- China
- Prior art keywords
- gear wheel
- bit
- tooth
- dropping
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
A drill bit preventing rollers from dropping into well is an improvement on three-roller bit and is composed of anti-dropping roller indicator, ultrafine solid lubricating system, dual-material axial sealing or combined O-shaped radial dynamic sealing, bottom jet regulator and clamping band ratchet tooth locked bearing. By fluid sesning to worn face of roller bit, the dropping of roller can be predicted. Its drilling speed and service life are increased by 70% or more.
Description
The present invention relates to petroleum drilling technology, particularly the improvement of the rock bit used of drilling well.
Be to improve drilling technology, shortening drilling period is the primary pursuit of modern drilling engineering, in the drilling process anti-lost, the drilling life of bit of gear wheel and cutting stratum efficient etc. has been proposed requirements at the higher level to drill bit.In recent years, no matter be both at home and abroad, or the drilling life of bit aspect all is greatly improved in drilling technology, but safety creep into improve with drilling speed on, also far can not be satisfied with the needs of modern drilling engineering.Drill bit is the point of drilling engineering, also has major defect on properties of product and function, allly falls a gear wheel the lighter and causes bigger economic loss, and is heavy then cause a bite well to scrap to be common occurrence, both to delay the duration like this that economic loss is bigger.Adopt drill bit conservative use regularly at present, the human and material resources that cause waste also is very big.This is the difficult problem in the phase of drilling engineering.From the present state of domestic and international drill bit industry, Sai Ke company is on the basis of Rui De company drill bit plate V-shaped ring, improved external waviness, bearing life has improved some, this product is prepared to produce jointly with China a company, its more than ten drill bits are on probation in the oil gas field of two maximums in east and Sichuan, maximum life span less than 40 hours/is to making joint disintegration; The drill bit seal en-hancement of Hughes Electronics is bimetallic axial seal, than original drill bit radially " O " type improve more than 20% sealing life, but still undesirable, a professional research institute and a company of China, the MP of two common developments in oil field
1The type drill bit has high speed drilling well characteristics, and at the authoritative product of the large-scale evaluation in Jiangxi, low 40% with the arc tooth contrast service index of our development, the product of other company is just poorer.In a word, the improvement of cutting structure is slowly, uses steel-tooth before the fifties, developed a new range hard alloy spherical-teeth later on again, the seventies is improved to edge tungsten-cobalt alloy wedge tooth, and the eighties has been promoted similar scoop chisel insert, has finished the supporting level of bit model substantially.Diamond tooth is because problems such as cost manufacturing process fail to obtain popularization.Domestic and international machine-made capsule balance benefit tastes device accommodation and sensitivity is all poor.All do not achieve one's goal in the instantaneous temperature difference method of all attempting bit wear aspect the measure of preventing gear wheel from dropping off both at home and abroad.High compressed steel and occupied the method that tooth scratches outside the bit body of Luo Ke company design because the hard-metal insert that relies on will fracture or fragmentation after the drill bit abrasion sometimes equally, so success rate is very low, also fail to promote.Bearing is locked with pellet shot from a slingshot, reduces axle journal intensity, and is also pretty troublesome during assembling.Hughes Electronics locks with jump ring, requires material and matching requirements height, easily goes out waste product.
In recent years, we have done some renewals by " a kind of rock bit " utility model patent (patent No. 91230004.3) of development, but diamond tooth fails to reinforce heart portion, plating tooth technology is poor, and the design of the preventing gear wheel from dropping off device cross-section of river is unreasonable.The patent of invention (patent No. 911072039) that " is used for the bottom jet regulator on the drill bit " still need be improved after on probation, and is few as regulating class, complex structure, and stability and sensitivity are relatively poor.
The objective of the invention is in order to overcome the weak point of various rock bit in the above prior art, provide a kind of by the preventing gear wheel from dropping off indicator, float equalizer and watering spills that the formula ultrafine solids is lubricated, sliding agent, (rank ring) axial seal of two materials or combination " O " shape dynamic radial seal, the protruding cover bottom jet of curve amount automatic regulator, the rock bit that the locking of clip hook tooth, bearing slip ring etc. are formed.This rock bit long service life, rate of penetration is fast, and can predict gear wheel and be about to well, in time pulls out of hole and uses green bit instead.
The objective of the invention is to be realized by following measure: the preventing gear wheel from dropping off indicator is to utilize down-hole liquid to spread sense, on drill bit slurry hole wall, a through hole is set, be communicated with the formation sidewalk for visually impaired people with pawl point, axle journal position easy to wear, after the arbitrary place abrasion of these positions, the draining section enlarges, pump pressure descends at once, proves that gear wheel is about to well.
The float equalizer adopts the built-in rubber ball float in level and smooth duct, bottom pressure P=P
1± Δ P (P
1Be bearing cavity pressure, Δ P is the poor of bottom pressure and bearing cavity pressure).It has increased pressure-bearing scope and pressure sensing sensitivity.
Water and spill formula ultrafine solids lubricating system, sticky lubricated with the lubricated grease in the past that replaced of solid shape, because the antifriction material that sliding agent is graphite, fluorographite, molybdenum bisuphide to be formed, good fluidity, strong adhesion, the high temperature resistant coefficient of expansion are low.Utilize gear wheel to rotate, with endoporus annular groove storage top-pour sliding agent down, continuous lubricating bearings timely.
Two materials (rank ring) axial seal, be to utilize fluorubber to make static seal, axle journal rotating ring and gear wheel driven torus are paid and an enhancing composite plastic ring for metal ring seal friction, make friction plate, or one of them ring is for strengthening composite plastic, and device is paid in the seal friction that partners, each ring with pay a ring fluorine rubber ring and be sulfided into one respectively, after the anchor ring abrasion, obtain replenishing of fluorubber elongation elastic force, bearing life is significantly improved.
Combination " O " shape dynamic radial seal with original " O " shape sealing ring, increases one deck and strengthens composite plastic on rubbing surface, improve their Frotteurism, reduces friction factor.Bearing clip hook tooth retaining ring has strengthened bearing intensity, has improved assembling effect and quality.
Bottom jet regulator adopts the multistage adjusting of the protruding cover of curve, and the epirelief cover is the symmetrical curve tooth, and following protruding cover is the variation curve tooth, causes resultant curve track between the two, makes the free betwixt flow regulator that drives of hanging column, regulates the cross-section of river.Liquid flow impact bearing plate compression spring, a retaining is once just regulated in every compression, so just increased to regulate retaining, and flexibility and reliability.Flow regulator is at the up and down adjusting flow of the conical surface.Cross-section of river F=HF
1, H is an adjustment factor in the formula,
(adjuster section), the shower nozzle upper end is a taper hole, the bottom is that the cambered surface that 120 ° of symmetries three are worn groove is educated the hole.Make with carbide alloy, overcoat is common metal and screw thread arranged, so that use during assembling.It can be used for also can cooperating on the various prospecting bore bits other nozzle to use separately.Use this ejector, can directly impact shaft bottom 15% by original liquid stream and rise to 85%, can not work being drilled in the shaft bottom and regulating the jet discharge capacity automatically.Such as handling down-hole accident, the anti-down-hole accident of poor hole quality, well-flushing need be adjusted into big discharge capacity before modulation shaft bottom mud, the setting of casing, when normally creeping into soft, hard formation, needs often to adjust discharge capacity etc.In a word, developed drilling technology preferably, played good effect for improving drilling speed, minimizing accident, labor savings, saving drill bit, shortening drilling period etc.
Fig. 1 is the total cross-sectional view of preventing gear wheel from dropping off drill bit of the present invention.
Fig. 2 is the structural representation of bottom jet regulator of the present invention.
Fig. 3 (first) is two materials (rank ring) axial seal enlarged drawings.
Fig. 4 (second) is combination " O " shape dynamic radial seal enlarged drawing.
Fig. 5 is a bearing clip hook tooth retaining ring enlarged drawing.
Below in conjunction with accompanying drawing structure of the present invention, operating principle and embodiment are described in further detail:
Among Fig. 1, rock bit 1, the preventing gear wheel from dropping off indicator is to spread sense by liquid to bore 8- 16mm on slurry hole 2 inwalls, 10 °-35 ° the aperture 3 of having a down dip, interface channel 4 is formed greater than 30mm with blind hole 5
2Cross-section of river closed system, the position of blind hole 5 20 °-60 ° of the either sides of macro-axis center of effort locate all can, the same with pawl point 6, need maintenance 1.5-5mm wall thickness.So no matter arbitrary place wearing and tearing of 5 or 6 all can bring pump pressure to descend, and are indicating that drill bit is about to scrap in the down-hole, thereby are preventing that gear wheel from falling the well accident.The crown heart 7B of portion embeds and the equiform thick 2.5-8mm of crown, height
The hard metal tip that tooth is long also can embed the man-made polycrystalline diamond sheet or the composite sheet of same specification, and the flank of tooth is strengthened with second pulse electroforming gold cast stone or cubic boron nitride, thickness is 0.5～3mm, and sword preceding 7 is a tooth depth
, 7A is a tooth depth behind the sword
Axle journal 8 is 120 ° of stress surfaces, the electroforming bed thickness is 0.05～0.6mm, as macro-axis 9, C point plane 10, two roads only bore 11, little axle 12, pawl point 6, all should the above superhard material of electroforming, the electroformed layer thickness of open-type bearing is 0.4～5mm, employing is oozed and is coated with C60 (bucky-ball), and it oozes and is coated with the thick 0.05～0.2mm of being.
Equalizer is formed by ball 16 and level and smooth duct 17, is subordinate to lubricating system, and the sealed bearing external and internal pressure is played balanced action, and duct 17 is 12- 40mm, and slotted hole and bit body are interlinked to the outside, and the diameter compression ratio 8～30% of float 16 is advisable.Kollag adopts antifriction materials such as the following superfine graphite of 10 μ, fluorographite, molybdenum bisuphide to form, and is full of whole lubricated space, and its dilatancy is little, mobile strong, heatproof, strong adhesion.
Water that to spill the formula ultrafine solids lubricated be to increase a cannelure 18 at the gear wheel endoporus, floating bushing 19, when gear wheel was forced to rotate, ultra-fine sliding agent constantly entered in the groove in the floating bushing opened gap, also constantly water and spill lubricating bearings, empty boasting 19 has also played the friction eceleration effect.
Among Fig. 2, the work of bottom jet regulator 13 is to utilize pressure cap 20 lockings to be bonded in drill bit 1 center, when flushing fluid punching press 13 and compress spring, 13F drives axis 13D and flow regulator 13N moves down, be subjected to the restriction of hanging column 13E, 13E is free between the resultant curve track all the time, hanging column is fallen within some notches of 13B, be exactly the class of adjuster 13h at a certain cross-section of river, when the needs gear shift, stopped to circulate two minutes, that spring 13F recovers is normal, with bearing plate 13C homing once more.The circulation of turn on pump flushing fluid, again towards bearing plate 13C, hanging column falls into down in the adjacent notch of protruding cover, has promptly changed the position of adjuster 13n at 13i, reaches the adjusting of bottom jet like this.
Among Fig. 3, two materials (rank ring) axial seal is rotating ring 14 and Fig. 1 position, driven torus 15 place, promptly on the axle journal 9 14 rotating ring 14A with metal or strengthen composite plastic and make with the 14B vulcanizable fluororubber and bond together; Driven torus 15A on the gear wheel hole 15 makes with the 15B vulcanizable fluororubber with metal or enhancing composite plastic and bonds together, as making with bimetallic, add one on its rubbing surface and strengthen composite plastic friction plate D, like this because the relative compression of fluorubber 14B, 15B, become static seal, mud is isolated, make full use of low-friction coefficient μ=0.05～0.1 that strengthens composite plastic, for strengthening composite plastic, can cancel rank ring D as 14A, 15A.
Among Fig. 4, combination " O " shape dynamic radial seal, assembling diameter 3- 12 " O " shape fluorine rubber ring 22 and the split ring 23 of a kind of thickness of surface sulfuration bonding in seal groove less than the reinforced composite of 1.5mm, utilize the material property characteristics to greatest extent, as the compression bounce of fluorubber, strengthen the low-friction coefficient of composite plastic.
Among Fig. 5, being the enlarged drawing of assembly 21 clip hook tooth retaining rings, is to increase axle journal intensity, and assembling is convenient, improves the design of assembly quality.When the drill bit packing, rock bit seals is placed on the axle journal, the locked clip device ring is placed in the annular groove of gear wheel axis hole, axis hole is placed on the axle journal, firmly be pressed into.With three same subassembly combination vehicle screw threads use product that promptly is shaped.To being of a size of
Above drill bit, screw thread partly is a bit body.
The present invention compared with prior art has the following advantages:
1. because in the rock bit cutting structure, to the utilization of most up-to-date techniques and material to tooth The improvement of shape significantly improves drilling speed, and the drilling speed growth rate reaches more than 72%.
2. owing to the improvement of sealing, lubricating system and bearing material, drilling life of bit is carried High to more than one times.
3. the success of preventing gear wheel from dropping off device has been removed always the operator and has been afraid of drill bit service time Grasp bad misgivings, the bit speed of can concentrating one's energy to pursue, thus saved Lower brill number of times and used less drill bit has reduced accident, has significantly reduced drilling cost.
4. the drilling technology that improved of bottom jet regulator has reduced the down-hole thing So generation, shorten drilling period, saved greatly drilling cost.
5. because drill bit to the adaptability expansion on stratum, can be saved a large amount of aborning Model is changed the line of production, and has also reduced the brill time that puts and drill bit consumption in using.
Claims (3)
1. the drill bit of preventing gear wheel from dropping off adopts make the rock bit that forms after gear wheel, the fine finishining of tooth pawl, the Technology for Heating Processing after assembling.It is characterized in that:
A. preventing gear wheel from dropping off indicator is to utilize shaft bottom liquid to spread sense, on 2 walls of drill bit 1 slurry hole the aperture 3 of 8- 16mm is set, and dips down 10 °-35 °, with pawl point 5, axle journal blind hole 6, position easy to wear, the passage 4 of wall thickness 1.5-5mm, forms greater than 30mm
2The closed system of the cross-section of river spreads sense by liquid and shows, after the abrasion of 5.6 outer walls, can give and show that gear wheel is about to come off well;
B. the float equalizer adopts the level and smooth duct 17 of diameter 10- 40mm, and built-in diameter compression ratio is 8～30% ball floats 16, has strengthened the sensitivity that pressure-bearing scope and pressure show, connects the external shaft bottom of lubricating system fluid column in the duct 17;
C. water and spill formula ultrafine solids lubricating system, sliding agent adopts antifriction materials such as graphite, fluorographite, molybdenum bisuphide to form, and when gear wheel rotates, utilizes the inner annular groove 18 of gear wheel and 19 times storages of empty boasting top-pour sliding agent, reach lubricating bearings timely, empty boasting itself is on-stream to have the anti-attrition effect;
D. two materials (rank ring) axial seal and combination " O " shape dynamic radial seal, the rank ring structure is to adopt metal friction face 14A to strengthen composite plastic friction plate D with rank between the 15A one, or 14A, 15A match with metal and composite material, the behind of 14A, 15A all will be sulfided into one respectively with paying ring 14B, 15B fluorine rubber ring, is to paste mutually to vulcanize less than the enhancing composite plastic split ring 23 of 1.5mm with fluorine rubber ring 22 and thickness to be bonded as one and make up " O " shape dynamic radial seal;
E. 21 lockings of clip hook tooth are adopted in the locking of bearing, are the opening slip rings of spring bearing steel, use hook tooth, have improved axle journal intensity, improve assembling effect and quality;
F. bottom jet regulator adopts the protruding cover fado of curve level to regulate, and epirelief cover 13A is set to the symmetrical curve tooth, and following protruding cover 13B is set to the variation curve tooth, cause resultant curve track between the two, make hanging column free betwixt,, reach the purpose of regulating the cross-section of river to drive flow regulator 13h.
2. according to the said rock bit of claim 1, it is characterized in that the interior cover of the shower nozzle 13g that is jet regulator adopts tungsten-cobalt alloy, it is circular-arc that the bottom is, 120 ° of symmetries three perforation, and the cross-section of river is 130～450mm
2, apply mechanically outward screw thread and spiral shell emit 20 with drill bit with hole 2 bottom perforateds, sealing locking again.
3. according to the said rock bit of claim 1, it is characterized in that being that the arc crown heart 7B of portion can embed hard metal tip, also can embed man-made polycrystalline diamond sheet (composite sheet), the flank of tooth second pulse electroforming diamond or cubic boron nitride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117558A CN1054669C (en) | 1996-05-16 | 1996-05-16 | Bit of preventing gear wheel from dropping off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96117558A CN1054669C (en) | 1996-05-16 | 1996-05-16 | Bit of preventing gear wheel from dropping off |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1165907A true CN1165907A (en) | 1997-11-26 |
| CN1054669C CN1054669C (en) | 2000-07-19 |
Family
ID=5124399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96117558A Expired - Fee Related CN1054669C (en) | 1996-05-16 | 1996-05-16 | Bit of preventing gear wheel from dropping off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1054669C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103080459A (en) * | 2010-06-30 | 2013-05-01 | Skf美国股份有限公司 | Bearing assembly for rotary drills |
| CN103089152A (en) * | 2013-02-28 | 2013-05-08 | 西南石油大学 | Embedded type wide-tooth cone bit |
| CN105745391A (en) * | 2013-11-15 | 2016-07-06 | 哈里伯顿能源服务公司 | Compensator clip ring retainer cap for a roller cone drill bit |
| CN109630027A (en) * | 2017-10-06 | 2019-04-16 | 肯纳金属公司 | Thin-walled earth-boring tools and its manufacturing method |
| CN110331938A (en) * | 2019-04-29 | 2019-10-15 | 江苏和信石油机械有限公司 | A kind of gear wheel drilling rod |
| CN111425139A (en) * | 2019-01-10 | 2020-07-17 | 中国石油化工股份有限公司 | Composite drill bit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070810U (en) * | 1990-04-23 | 1991-02-06 | 江汉石油管理局钻头厂 | Locking device of roller bit |
| CN1069557A (en) * | 1991-08-15 | 1993-03-03 | 石油大学(北京) | Floating metal sealing device for gear wheel drill head |
| CN2104925U (en) * | 1991-09-24 | 1992-05-20 | 李继贤 | Bit of gear wheel |
-
1996
- 1996-05-16 CN CN96117558A patent/CN1054669C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103080459A (en) * | 2010-06-30 | 2013-05-01 | Skf美国股份有限公司 | Bearing assembly for rotary drills |
| CN103089152A (en) * | 2013-02-28 | 2013-05-08 | 西南石油大学 | Embedded type wide-tooth cone bit |
| CN105745391A (en) * | 2013-11-15 | 2016-07-06 | 哈里伯顿能源服务公司 | Compensator clip ring retainer cap for a roller cone drill bit |
| CN105745391B (en) * | 2013-11-15 | 2018-01-02 | 哈里伯顿能源服务公司 | The compensator clasp retention cap of rock bit |
| CN109630027A (en) * | 2017-10-06 | 2019-04-16 | 肯纳金属公司 | Thin-walled earth-boring tools and its manufacturing method |
| CN111425139A (en) * | 2019-01-10 | 2020-07-17 | 中国石油化工股份有限公司 | Composite drill bit |
| CN110331938A (en) * | 2019-04-29 | 2019-10-15 | 江苏和信石油机械有限公司 | A kind of gear wheel drilling rod |
| CN110331938B (en) * | 2019-04-29 | 2020-12-01 | 江苏和信石油机械有限公司 | Roller bit drill rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1054669C (en) | 2000-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6450271B1 (en) | Surface modifications for rotary drill bits | |
| US6065552A (en) | Cutting elements with binderless carbide layer | |
| RU2572617C2 (en) | Coupling device with coating for operation in gas and oil wells | |
| RU2653379C2 (en) | Antifriction coatings with improved abrasion and wear properties and methods of making same | |
| US7600823B2 (en) | Pick assembly | |
| US20090236147A1 (en) | Lubricated Diamond Bearing Drill Bit | |
| CN105156035B (en) | A kind of oscillating tooth PDC drill bit | |
| JPS62111093A (en) | Lock-bit with abrasion-resistant insert | |
| CN1054669C (en) | Bit of preventing gear wheel from dropping off | |
| US5485890A (en) | Rock bit | |
| US3318400A (en) | Hollow crown diamond bit | |
| RU2608454C1 (en) | Coated coupling device for operation in gas and oil wells | |
| EP2065550A1 (en) | Micropore engagement surface for earth boring bit | |
| CN201050313Y (en) | Down-hole pipe string protector | |
| CN2846711Y (en) | Low wear resistance centralizer for horizontal directional drilling well | |
| CN205445459U (en) | Screw rod drilling tool wear -resistant coating transmission shaft | |
| CN2276985Y (en) | Pressure balance sealed bearing tri-cone rotary drill bit | |
| CN210178296U (en) | Special sucker rod centralizer for sulfur-proof wear-resistant paraffin removal | |
| CA2658668C (en) | Seal assembly for drill bit | |
| CN2263194Y (en) | Roller bit with inside strength tooth | |
| CN220469798U (en) | Fluid reamer | |
| CN101886523A (en) | High-strength and wear-resistant roller bit | |
| CN216788303U (en) | PDC drill bit with spinning tooth | |
| CN214697766U (en) | Rupture disc stabilizer | |
| CN112796678B (en) | Sand gravel stratum drilling device and drilling process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1049544 Country of ref document: HK |