CN203867472U - Combined drill bit combining PDC drill bit and roller bit to break rock - Google Patents
Combined drill bit combining PDC drill bit and roller bit to break rock Download PDFInfo
- Publication number
- CN203867472U CN203867472U CN201420171308.8U CN201420171308U CN203867472U CN 203867472 U CN203867472 U CN 203867472U CN 201420171308 U CN201420171308 U CN 201420171308U CN 203867472 U CN203867472 U CN 203867472U
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- bit
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- drill bit
- rock
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Abstract
The utility model discloses a combined drill bit combining a PDC drill bit and a roller bit to break rock. The combined drill bit combining the PDC drill bit and the roller bit to break the rock is characterized by comprising the PDC drill bit and the roller bit which are connected with each other, the PDC drill bit comprises a round steel body, multiple blade wing sets and multiple grooves are milled on the side face of the round steel body, each blade wing set comprises a first blade wing and a second blade wing, the first blade wing and the second blade wing of each blade wing set are straight integrated blade wings, the roller bit comprises multiple toothed palms, the toothed palms are mounted in the grooves, a toothed roller set is arranged on the lower portion of each toothed palm, the toothed roller sets are in one-to-one correspondence to the blade wing sets, each toothed roller set comprises a first toothed roller and a second toothed roller, the outer side of each first toothed roller and the outer side of each second toothed roller form a toothed roller cone crushing surface and a toothed roller arc crushing surface respectively, and the round steel body is provided with a roller bit oil storage sealing bearing system and a hydraulic jetting system. According to the combined drill bit combining the PDC drill bit and the roller bit to break the rock, rock breaking efficiency of the combined drill bit is improved, the service life of the combined drill bit is guaranteed, the work indexes of well drilling are good, and cost of well drilling is lowered.
Description
Technical field
The invention belongs to petroleum geology drilling well and use drill bit field, specifically, relate to the combined drill of a kind of PDC drill bit and rock bit combined-breaking rock.
Background technology
In the prior art, in the time that drilling well runs into hard formation, conventional PDC drill bit is mainly to realize down-hole by scraping motion mode to creep into, and cutting element main on the nose of diamond bit and shoulder is difficult to effective wedging bottom rock, and it is very slow that the rate of penetration of diamond bit will become; And rock bit is to impact crushing mode fractured rock, easily make rock produce darker crushing teeth hole, but because stratum is hard, can not make rock produce volumetric fracture, therefore the stock-removing efficiency of rock bit cutting teeth is also very low, the rate of penetration of rock bit is also very slow.In addition on the one hand, in the time that drill bit runs into the more stratum of some soft or hard interlayers, the cutting element of PDC drill bit is very easily subject to impacting damaged, in order to tackle this situation, Chinese patent literature CN200880016630.0 discloses the Mixed drilling bit being combined by rock bit and PDC diamond bit, though this Mixed drilling bit has stronger combination property, but there is following deficiency: due to the rock breaking mechanism of the peculiar impact crushing of tricone bit, the shock loading that gear wheel rotation produces easily causes the cutting element PDC composite sheet fragmentation of diamond drill machine head part, thereby cause the reduction of drill bit rate of penetration, simultaneously, combinations thereof drill bit efficiency of breaking rock is low, and the section in application life of drill bit, existing drill bit has improved drilling cost simultaneously, be not easy to the popularization of combinations thereof drill bit.
Summary of the invention
For solving the problem in background technology, the invention provides a kind of drill bit efficiency of breaking rock, bit life, brill working index and the reduction PDC drill bit of drilling cost and combined drill of rock bit combined-breaking rock of improving.
Technical scheme of the present invention is:
A combined drill for PDC drill bit and rock bit combined-breaking rock, is characterized in that: comprise interconnective PDC drill bit and rock bit; Described PDC drill bit comprises round steel main body, and on the side of round steel main body, some wing groups are made in milling, and some grooves, and every group of wing comprises a wing and two wings, and a wing and two wings are yi word pattern disjunctor wing; Described rock bit comprises some bit legs, and bit leg is arranged in groove, and the bottom of bit leg is provided with gear wheel group, and described gear wheel group and wing group are one to one; Every group of gear wheel group comprises a gear wheel and two gear wheels, and the outside of a gear wheel and two gear wheels forms respectively the gear wheel conical surface plane of disruption and the gear wheel circular arc plane of disruption; In described round steel main body, be provided with rock bit oil storage sealing bearing system and jetting system.
Improve as one, on the side of described round steel main body, to make the number of wing group be a pair of in milling, comprises a wing and two wings, is respectively arranged with some main teeth and secondary tooth on a wing and two wings; Main tooth and secondary tooth form the broken line in shaft bottom, and the broken line in shaft bottom comprises inner conical surface and arc surface, and on the outer gage surface of a wing and two wings, be provided with carbide button, end face that 1304 teeth and 1004 teeth are made.
Improve as one, in described round steel main body, be provided with some rectangular slots, in rectangular slot, be welded with bit leg.
Improve as one, the gear wheel in described gear wheel group and two gear wheels are locked by jump ring on the axle journal that hangs over bit leg; One gear wheel and two gear wheels comprise respectively conical surface tooth and the main tooth of arc surface gear wheel, and the main tooth of arc surface gear wheel forms arc surface, and on arc surface, are provided with and cut footpath tooth and flat tooth.
Improve as one, described rock bit oil storage sealing bearing system comprises the bearing being arranged between rock bit and PDC drill bit, bearing is the high speed oil storage sealed bearing of locking gear wheel, and high speed oil storage sealed bearing comprises O-ring seals, axle metal ring, floating ring, gear wheel end face, large shaft sleeve, jump ring, copper post, little axle sleeve, little axle, oil storage bag, large axis hole, shafting oil hole, shafting oil groove, pressure transmission hole, oil filler point, oiling plug and palm back of the body tooth; On described gear wheel end face, be provided with little axle, and on gear wheel end face, be provided with O-ring seals, axle metal ring, floating ring, gear wheel end face, large shaft sleeve, jump ring, copper post, little axle sleeve, oil storage bag, large axis hole, shafting oil hole, shafting oil groove, pressure transmission hole, oil filler point, oiling plug and palm back of the body tooth.
Improve as one, described jetting system comprises two groups of side nozzles and central nozzle.
Owing to having adopted technique scheme, compared with prior art, PDC drill bit in the present invention adopts mill teeth post and perforation and two kinds of structures of electric welding steel-tooth post of steel body formula composite teeth, the main tooth of soldering 1608 and 1308 secondary teeth, improve composite teeth and cutter teeth combined-breaking rock region and realized full shaft bottom combined-breaking rock and adopt two side hydrophthalmias and the cleaning of center hydrophthalmia wing, composite teeth and gear wheel and tooth, carried shaft bottom landwaste and be conducive to improve composite teeth life-span and bit performance.
Rock bit jump ring locking gear wheel bearing is high speed oil storage sealed bearing, one gear wheel is the tooth of cone cydariform, the rock of the full well bottom zone of broken PDC drill bit composite teeth, for composite teeth provides the broken hole of tooth macadam, the broken composite teeth circular arc of the tooth region rock of two gear wheels, tooth on gear wheel is the chisel teeth of conisphere tee section, and cutting footpath tooth is the efficiency of breaking rock that protruding top chisel teeth improves composite teeth gear wheel, can improve combined drill life-span and working index and reduce drilling cost.
Combined drill of the present invention is to constitute jointly brokenly rock by PDC drill bit and rock bit, has improved drill bit efficiency of breaking rock, has ensured the application life of drill bit, and the working index of drilling well is good, has reduced the cost of drilling well.
Brief description of the drawings
Fig. 1 is the Facad structure schematic diagram of an embodiment of the present invention;
Fig. 2 is the plan structure schematic diagram of an embodiment of the present invention.
Detailed description of the invention
Embodiment
As shown in Figure 1 and Figure 2, the combined drill of a kind of PDC drill bit and rock bit combined-breaking rock, comprises interconnective PDC drill bit and rock bit.Described PDC drill bit comprises round steel main body 1, and on the side of round steel main body 1, some wing groups are made in milling, and some grooves.Every group of wing comprises a wing 2 and two wings 3, one wing 2 and two wings 3 are yi word pattern disjunctor wing. described rock bit comprises some bit legs 11, bit leg 11 is arranged in groove, and the bottom of bit leg 11 is provided with gear wheel group, and described gear wheel group and wing group are one to one.Every group of gear wheel group comprises that the outside of a gear wheel 12 and two gear wheel 13, one gear wheels 12 and two gear wheels 13 forms respectively the gear wheel conical surface plane of disruption 18 and the gear wheel circular arc plane of disruption 19.In described round steel main body 1, be provided with rock bit oil storage sealing bearing system and jetting system.
In the present embodiment, on the side of described round steel main body 1, to make the number of wing group be a pair of in milling, comprises on a wing 2 and two wing 3, one wings 2 and two wings 3 and be respectively arranged with some main teeth 4 and secondary tooth 5.Main tooth 4 and secondary tooth 5 form the broken line in shaft bottom, and the broken line in shaft bottom comprises inner conical surface 6 and arc surface 7, and on the outer gage surface of a wing 2 and two wings 3, is provided with the end face that carbide button 8,1304 tooth 9 and 1004 teeth 10 are made.
In described round steel main body, be provided with some rectangular slots, in rectangular slot, be welded with bit leg 11.
A gear wheel 12 in described gear wheel group and two gear wheels 13 hang on the axle journal of bit leg by jump ring 25 lockings.One gear wheel 12 and two gear wheels 13 comprise respectively conical surface tooth 14 and the main tooth 15 of arc surface gear wheel, and the main tooth of arc surface gear wheel forms arc surface, and on arc surface, are provided with and cut footpath tooth 16 and flat tooth 17.The cutting of gear wheel is all the chisel teeth in blunt conical-ended shape insert cross section, cutting footpath tooth is protruding top chisel teeth, drift angle is 153 °, tooth top is cut hole diameter and shaft bottom simultaneously, the adjacent teeth cloth tooth that equidistantly staggers in space, the main tooth of two gear wheels and conical surface tooth bear full shaft bottom and Complex closes tooth combined-breaking rock, the rock stratum of closing tooth fragmentation at full shaft bottom PDC drill bit Complex be rock bit tooth impact grinding cross the about 5-6 person of outstanding talent of degree of depth rice give broken rock or rock stratum to be broken, have in improving Complex and close the tooth life-span and improve bit performance and reduce drilling cost.
Described rock bit oil storage sealing bearing system comprises the bearing being arranged between rock bit and PDC drill bit, bearing is the high speed oil storage sealed bearing of locking gear wheel, and high speed oil storage sealed bearing comprises O-ring seals 20, axle metal ring 21, floating ring 22, gear wheel end face 23, large shaft sleeve 24, jump ring 25, copper post 26, little axle sleeve 27, little axle 28, oil storage bag 29, large axis hole 30, shafting oil hole 31, shafting oil groove 32, pressure transmission hole 33, oil filler point 34, oiling plug 35 and palm back of the body tooth 36.On described gear wheel end face, be provided with little axle, and on gear wheel end face, be provided with O-ring seals, axle metal ring, floating ring, gear wheel end face, large shaft sleeve, jump ring, copper post, little axle sleeve, oil storage bag, large axis hole, shafting oil hole and shafting oil groove and palm back of the body tooth.Wherein oil storage bag 29 is to be fixed in large axis hole 30 by the little axle lower end with left-hand thread, in the time that drill bit is worked, normally does by pressure transmission hole 33 equalizer bearing external and internal pressure official post sealed bearings.Bearing seal is O-ring seals and metal ring floating seal, this combination sealing has radial and axial sealing function simultaneously, under promoting, O shape circle axial force make floating ring lower surface be close to axle metal ring end face, floating ring upper surface is close to gear wheel end face and can under ultrahigh rotating speed, be realized end face seal floating ring bearing is normally worked, and can improve bit performance; The profile milling of bit leg body is "T"-shaped and to imbed in drill main body 1 groove electric welding integral, realize the integrated PDC drill bit of having improved of PDC drill bit and rock bit and close the tooth life-span at the efficiency of breaking rock of hard and bad ground and Complex and can reduce drilling cost, improve the working index of combined drill.
Described jetting system comprises two groups of side nozzles 37 and central nozzle 38.The mud of these nozzle ejections cleans Complex and closes tooth, cutter teeth and gear wheel, on the cutting carring of bottom-hole cleaning, returns.
PDC drill bit in the present invention adopts mill teeth post and perforation and two kinds of structures of electric welding steel-tooth post of steel body formula composite teeth, the main tooth of soldering 1608 and 1308 secondary teeth, improve composite teeth and cutter teeth combined-breaking rock region and realized full shaft bottom combined-breaking rock and adopt two side hydrophthalmias and the cleaning of center hydrophthalmia wing, composite teeth and gear wheel and tooth, carried shaft bottom landwaste and be conducive to improve composite teeth life-span and bit performance.Rock bit jump ring locking gear wheel bearing is high speed oil storage sealed bearing, one gear wheel is the tooth of cone cydariform, the rock of the full well bottom zone of broken PDC drill bit composite teeth, for composite teeth provides the broken hole of tooth macadam, the broken composite teeth circular arc of the tooth region rock of two gear wheels, tooth on gear wheel is the chisel teeth of conisphere tee section, and cutting footpath tooth is the efficiency of breaking rock that protruding top chisel teeth improves composite teeth gear wheel, can improve combined drill life-span and working index and reduce drilling cost.
The present invention is not limited to above-mentioned preferred embodiment, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or akin technical scheme with the present invention, all belongs to protection scope of the present invention.
Claims (6)
1. a combined drill for PDC drill bit and rock bit combined-breaking rock, is characterized in that: comprise interconnective PDC drill bit and rock bit; Described PDC drill bit comprises round steel main body, and on the side of round steel main body, some wing groups are made in milling, and some grooves, and every group of wing comprises a wing and two wings, and a wing and two wings are yi word pattern disjunctor wing;
Described rock bit comprises some bit legs, and bit leg is arranged in groove, and the bottom of bit leg is provided with gear wheel group, and described gear wheel group and wing group are one to one; Every group of gear wheel group comprises a gear wheel and two gear wheels, and the outside of a gear wheel and two gear wheels forms respectively the gear wheel conical surface plane of disruption and the gear wheel circular arc plane of disruption;
In described round steel main body, be provided with rock bit oil storage sealing bearing system and jetting system.
2. according to the combined drill of the PDC drill bit described in claim 1 and rock bit combined-breaking rock, it is characterized in that: on the side of described round steel main body, to make the number of wing group be a pair of in milling, comprise a wing and two wings, on a wing and two wings, be respectively arranged with some main teeth and secondary tooth; Main tooth and secondary tooth form the broken line in shaft bottom, and the broken line in shaft bottom comprises inner conical surface and arc surface, and on the outer gage surface of a wing and two wings, be provided with carbide button, end face that 1304 teeth and 1004 teeth are made.
3. according to the combined drill of the PDC drill bit described in claim 2 and rock bit combined-breaking rock, it is characterized in that: in described round steel main body, be provided with some rectangular slots, in rectangular slot, be welded with bit leg.
4. according to the combined drill of the PDC drill bit described in claim 3 and rock bit combined-breaking rock, it is characterized in that: the gear wheel in described gear wheel group and two gear wheels are locked by jump ring on the axle journal that hangs over bit leg; One gear wheel and two gear wheels comprise respectively conical surface tooth and the main tooth of arc surface gear wheel, and the main tooth of arc surface gear wheel forms arc surface, and on arc surface, are provided with and cut footpath tooth and flat tooth.
5. according to the combined drill of the PDC drill bit described in claim 4 and rock bit combined-breaking rock, it is characterized in that: described rock bit oil storage sealing bearing system comprises the bearing being arranged between rock bit and PDC drill bit, bearing is the high speed oil storage sealed bearing of locking gear wheel, and high speed oil storage sealed bearing comprises O-ring seals, axle metal ring, floating ring, gear wheel end face, large shaft sleeve, jump ring, copper post, little axle sleeve, little axle, oil storage bag, large axis hole, shafting oil hole, shafting oil groove, pressure transmission hole, oil filler point, oiling plug and palm back of the body tooth; On described gear wheel end face, be provided with little axle, and on gear wheel end face, be provided with O-ring seals, axle metal ring, floating ring, gear wheel end face, large shaft sleeve, jump ring, copper post, little axle sleeve, oil storage bag, large axis hole, shafting oil hole, shafting oil groove, pressure transmission hole, oil filler point, oiling plug and palm back of the body tooth.
6. according to the combined drill of the PDC drill bit described in claim 5 and rock bit combined-breaking rock, it is characterized in that: described jetting system comprises two groups of side nozzles and central nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171308.8U CN203867472U (en) | 2014-04-10 | 2014-04-10 | Combined drill bit combining PDC drill bit and roller bit to break rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420171308.8U CN203867472U (en) | 2014-04-10 | 2014-04-10 | Combined drill bit combining PDC drill bit and roller bit to break rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867472U true CN203867472U (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420171308.8U Withdrawn - After Issue CN203867472U (en) | 2014-04-10 | 2014-04-10 | Combined drill bit combining PDC drill bit and roller bit to break rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867472U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939022A (en) * | 2014-04-10 | 2014-07-23 | 河北驰恒钻头制造有限公司 | Combined drill bit combining PDC drill bit and roller bit for joint rock breaking |
| CN105350914A (en) * | 2015-12-08 | 2016-02-24 | 苏州新锐合金工具股份有限公司 | Tricone bit with strength protection drill core |
| CN106545299A (en) * | 2015-09-18 | 2017-03-29 | 成都百施特金刚石钻头有限公司 | A kind of new combination tooth PDC drill bit |
| CN110485930A (en) * | 2019-08-26 | 2019-11-22 | 四川宝石机械石油钻头有限责任公司 | PDC- gear wheel composite drill bit |
-
2014
- 2014-04-10 CN CN201420171308.8U patent/CN203867472U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939022A (en) * | 2014-04-10 | 2014-07-23 | 河北驰恒钻头制造有限公司 | Combined drill bit combining PDC drill bit and roller bit for joint rock breaking |
| CN103939022B (en) * | 2014-04-10 | 2015-12-16 | 河北驰恒钻头制造有限公司 | The combined drill of a kind of PDC drill bit and rock bit combined-breaking rock |
| CN106545299A (en) * | 2015-09-18 | 2017-03-29 | 成都百施特金刚石钻头有限公司 | A kind of new combination tooth PDC drill bit |
| CN105350914A (en) * | 2015-12-08 | 2016-02-24 | 苏州新锐合金工具股份有限公司 | Tricone bit with strength protection drill core |
| CN110485930A (en) * | 2019-08-26 | 2019-11-22 | 四川宝石机械石油钻头有限责任公司 | PDC- gear wheel composite drill 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: 20141008 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |