CN107060653A - One kind mixing broken rock mechanism and a kind of long-life Mixed drilling bit - Google Patents
One kind mixing broken rock mechanism and a kind of long-life Mixed drilling bit Download PDFInfo
- Publication number
- CN107060653A CN107060653A CN201710286929.9A CN201710286929A CN107060653A CN 107060653 A CN107060653 A CN 107060653A CN 201710286929 A CN201710286929 A CN 201710286929A CN 107060653 A CN107060653 A CN 107060653A
- Authority
- CN
- China
- Prior art keywords
- broken
- rock
- broken rock
- shaft member
- rolling
- 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
- 239000011435 rock Substances 0.000 title claims abstract description 144
- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 238000005553 drilling Methods 0.000 title claims abstract description 32
- 238000005096 rolling process Methods 0.000 claims abstract description 39
- 210000000515 tooth Anatomy 0.000 claims description 21
- 238000005461 lubrication Methods 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000004744 fabric Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 241000237942 Conidae Species 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000209202 Bromus secalinus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- 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
- E21B10/16—Roller bits characterised by tooth form or arrangement
-
- 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
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
Abstract
One kind mixing broken rock mechanism and a kind of long-life Mixed drilling bit, it is characterized in that, including rolling broken-rock part and fixed broken rock part, recess is provided with the fixed broken rock part, the rolling broken-rock part with can relatively described fixed broken rock part be pivotably arranged in the recess, the rolling broken-rock part includes the broken rock portion of wheel body and the circumferential directions along the wheel body, and the thickness D of the wheel body is with the broken rock portion in the ratio between the size d of the wheel body thickness direction 1.1≤D/d≤4.At least one mixing broken rock mechanism is provided with a kind of long-life Mixed drilling bit, including body, the body.Such rolling broken-rock part is arranged in the recess of fixed broken rock part, two sides are contacted with the inwall of recess, axial thrust is played and spacing effect to rolling broken-rock part body, there is no axial locking, reduce the risk that rolling broken-rock part drops, so as to reduce the probability of down-hole accident generation, so as to save cloth tooth space valuable on drill bit.
Description
Technical field
The present invention relates to oil-gas drilling engineering, mine engineering, building foundation engineering construction, geological drilling, tunnel
Engineering, the hydrology and trenchless technology field, and in particular to one kind mixing broken rock mechanism and a kind of long-life Mixed drilling bit.
Background technology
In oil and gas well drilling engineering, usually using drill bit fractured rock, drill bit is fractured rock formation pit shaft
Rock crushing tool.The drill bit used in current drilling engineering mainly has tricone bit and PDC drill bit, and tricone bit is mainly with punching
Hit the form broken rock of crushing, the wheel body speed ratio of tricone bit（The ratio between gear wheel rotating speed and drill speed when bit is crept into）
More than 1, gear wheel rotating speed is fast when bit is crept into, and the tooth on gear wheel is to bottom rock formation impact granulitization broken rock, energy
Amount utilization rate is not high, and efficiency of breaking rock is relatively low.PDC drill bit by high rigidity, it is wear-resisting, from sharp composite polycrystal-diamond
（Abbreviation PDC teeth）To shear and fractured rock, PDC drill bit rate of penetration in soft-medium hard formation is high, long lifespan, drilling cost
It is low, therefore it is used widely in the drilling of Oil/gas Well.
Gear wheel-PDC hybrid bits that Baker Hughes Inc. proposes are on the basis of traditional PDC cutting structures
Increase formed by gear wheel cutting structure.When Mixed drilling bit rotary drilling, the PDC teeth in fixing wing are broken with scraping butt formula
The main broken rock in the way of impacting crushing of tooth on rock, gear wheel, therefore Mixed drilling bit relies on two ways fractured rock, it
Some special formations-such as gravel stratum, heterogeneity stratum can obtain preferable effect.
In existing gear wheel-PDC Mixed drilling bits, cone body is mounted on independent bit leg, and its bearing supports to be single
Structure, axle journal one end of bearing is fixed on the bit leg of bit body, and the other end is free end, i.e., axle journal is the cantilever of single-ended fixation
Girder construction, gear wheel is sleeved on the axle journal of bit leg to rotate with bit body formation and is connected.To prevent that gear wheel is axially altered during bit operation
Move and come off, axial locking is provided between axle journal and cone body（Such as ball lock device）, axial locking need to
Annular groove is processed in axle journal and cone body, the presence of annular groove have impact on the intensity and bearing abrasive resistance of axle journal and gear wheel,
The service life of bearing is shortened；Second, setting the axial locking of gear wheel in bearing arrangement, however it remains because of axle
Failed to locking device and cause the possibility of cone shedding, cone shedding accident will be produced once occurring to follow-up drilling course
Raw very detrimental effect；Thirdly the intensity in order to ensure gear wheel cutting structure, the bearing arrangement and cone body of its gear wheel are in itself
Volume is too big, occupies the valuable cloth tooth space of drill bit；Its four in order to ensure the intensity of gear wheel bearing be accomplished by increase bearing chi
It is very little, it is just corresponding to reduce the thickness of cone shell, so that the cracking of cone shell is easily caused, the feelings such as permanent tooth insufficient strength of tooth
The generation of condition.The presence of disadvantages mentioned above will seriously restrict the use of Mixed drilling bit；Also, current torque-on-bit is excessive, reduces and bores
Head transverse direction, axial direction, twisting vibration, bit tool face are difficult to control, so as to trigger drill bit bit bouncing, the breaking wing, vibrate and can allow cutting
The problems such as tooth premature failure.
In summary, current gear wheel-PDC Mixed drilling bits exist gear wheel bearing short life, cone shell easily ftracture, tooth
The space that wheel is occupied is excessive and gear wheel still has the problem of dropping.
The content of the invention
It is an object of the invention to：There is gear wheel bearing short life, cone shell for gear wheel-PDC Mixed drilling bits easy
Cracking, the space that occupies of gear wheel be excessive and gear wheel still has the problem of dropping there is provided a kind of compound broken rock mechanism and one kind
Long-life composite drill bit.
To achieve these goals, the technical solution adopted by the present invention is：
It is provided with one kind mixing broken rock mechanism, including rolling broken-rock part and fixed broken rock part, the fixed broken rock part
Recess, the rolling broken-rock part with can relatively described fixed broken rock part be pivotably arranged in the recess, institute
State broken rock portion of the rolling broken-rock part including wheel body and the circumferential directions along the wheel body, the thickness D of the wheel body and institute
Broken rock portion is stated in the ratio between the size d of the wheel body thickness direction 1.1≤D/d≤4.
Preferably, the broken rock portion is PDC cutting tooths or tooth, the two circles broken rock portion is provided with the wheel body,
Efficiency of breaking rock is higher, and more preferably, the life-span is longer for stability.
Preferably, the mixing broken rock mechanism also includes shaft member, the shaft member is arranged on the side wall of the recess, institute
State shaft member to be fixedly connected with the wheel body, rate of depreciation is lower, and the life-span is longer, and stability is more preferable.
Preferably, the mixing broken rock mechanism also includes being provided with axis hole, the shaft member and institute on shaft member, the wheel body
Shaft hole matching is stated, the shaft member is fixedly installed in recess sidewalls, and quality is lighter, and stability is more preferable.
Preferably, being provided with lubrication channel in the shaft member, the lubrication channel is included along the shaft member diametric(al)
The radial hole of arrangement, the axial hole arranged along the shaft member axis and the annular groove set along the shaft member circumferencial direction, the footpath
Axial hole is communicated described in Xiang Kongyu, and the radial hole is communicated with the annular groove, so that the life-span of rolling broken-rock part is longer.
Disclosed herein as well is a kind of long-life Mixed drilling bit, including body, the broken rock machine is provided with the body
Structure.
Preferably, the long-life Mixed drilling bit includes mixing broken rock mechanism described at least two, broken rock is each combined
Be provided with a rolling broken-rock part in mechanism, the fixed broken rock part in a mixing broken rock mechanism with it is another
The fixed broken rock part in one mixing broken rock mechanism is unequal relative to the distance of Z axis.
Preferably, being additionally provided with the fixed broken rock part on the body.
Preferably, being additionally provided with gear wheel on the body.
In summary, by adopting the above-described technical solution, the beneficial effect of the application is：Rolling broken-rock part compared to
It is smaller for conventional gear wheel, thus thickness of shell will greatly increase, effectively reduce existing rock bit because cone shell ftractures or
Breakage etc. causes cone shedding to fall into shaft bottom and produces down-hole accident；Rolling broken-rock part is arranged in the recess of fixed broken rock part
Interior, two sides are contacted with the inwall of recess, will be increased greatly from the bearing capacity without axial locking, bearing arrangement
Plus, extend bearing lifetime of system, bearing can be obviously improved the sealability of bearing in the case of uniform force, prolong so as to improve
The service life of long drill bit；Also, by the inwall of recess axial thrust can be played and spacing work to rolling broken-rock part body
With, can so be substantially reduced the risk that rolling broken-rock part drops so that reduce down-hole accident generation probability；It is broken due to rolling
The very little that petrosa part can be set, no longer for the purpose of broken rock, and can reduce drill bit moment of torsion, reduce drill bit laterally, axially,
Twisting vibration so that bit tool face is more prone to control；Rolling broken-rock part is arranged on the recess on fixed broken rock part
It is interior, avoid the need for setting independent rolling broken-rock structure, for example independent setting gear wheel again, so as to save valuable on drill bit
Cloth tooth space.
Brief description of the drawings
Fig. 1 is the structural representation that the application mixes broken rock mechanism；
Fig. 2 is the structural representation of the application long-life Mixed drilling bit；
Fig. 3 is Fig. 2 top view；
Fig. 4 is the cloth tooth envelope structure chart of the application long-life Mixed drilling bit；
Fig. 5 is another structural representation for the application mixing broken rock mechanism for being different from Fig. 1；
Fig. 6 be Fig. 3 in Section A-A partial view；
Fig. 7 is the partial view of the Section A-A in Fig. 3, is different from Fig. 6 another structure；
Fig. 8 is the partial view of the Section A-A in Fig. 3, is different from Fig. 7 another structure；
Marked in figure：1- bodies, 21- fix broken rock structure, 22-PDC teeth, 23- wings contour line, 3- rolling broken-rocks structure, 31-
Wheel body, 32- broken rocks portion, 33- shaft member, 4- nozzles or hydrophthalmia, 5- sealing rings, 6- recesses, 7- rocks, 8- lubrication channels, 81- are radially
Hole, 82- axial holes, 83- annular grooves, 9- keys, 11- copper bands, 12- plugs or baffle plate.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As shown in figures 1-8, a kind of mixing broken rock mechanism, including rolling broken-rock part and fixed broken rock part, fixed broken rock
The part for fractured rock that part is namely fixedly connected with drilling rod, such as PDC wings, diamond bit or hammer drilling bit
It is that can be relatively fixed the rotation of broken rock part and the relative rock rolling in the case where fixed broken rock part drives Deng, rolling broken-rock part
It is dynamic, rolling broken-rock is carried out, rolling broken-rock part can be replaced by PDC cutting tooths with gear wheel or the tooth on gear wheel
It is provided with novel features or wheel on the novel features of diamond particles, the fixed broken rock part and is provided with recess,
The rolling broken-rock part with can relatively described fixed broken rock part be pivotably arranged in the recess, it is described roll
Broken rock part includes the broken rock portion of wheel body and the circumferential directions along the wheel body, thickness D and the broken rock of the wheel body
Portion is in the ratio between the size d of the wheel body thickness direction 1.1≤D/d≤4, in this way, rolling broken-rock part is compared to conventional gear wheel
Yan Geng little, thus thickness of shell will greatly increase, effectively reduces existing rock bit because cone shell ftractures or breakage etc. causes
Cone shedding falls into shaft bottom and produces down-hole accident；Rolling broken-rock part is arranged in the recess of fixed broken rock part, two sides
Contact, will be greatly increased from the bearing capacity without axial locking, bearing arrangement with the inwall of recess, extend bearing
Lifetime of system, bearing can be obviously improved the sealability of bearing in the case of uniform force, so as to improve making for extension drill bit
Use the life-span；Also, axial thrust can be played and spacing effect to rolling broken-rock part body, can so show by the inwall of recess
Write and reduce the risk that rolling broken-rock part drops, so as to reduce the probability of down-hole accident generation；Because rolling broken-rock part can be with
The very little of setting, no longer for the purpose of broken rock, and can reduce the moment of torsion of drill bit, reduce drill bit transverse direction, axial direction, twisting vibration,
So that bit tool face is more prone to control；Rolling broken-rock part is arranged in the recess on fixed broken rock part, is just not required to
Independent rolling broken-rock structure is being set, for example independent setting gear wheel again, so as to save cloth tooth space valuable on drill bit.
Further, the broken rock portion is to include PDC cutting tooths and/or tooth, is provided with the wheel body described in two circles
Broken rock portion, in this way, efficiency of breaking rock is higher, more preferably, the life-span is longer for stability.
As schemed, 6, mixing broken rock mechanism also includes shaft member, and the shaft member is arranged on the side wall of the recess, the shaft member
It is fixedly connected with the wheel body by key, spline or interference fit, wheel body is not rotated relative to shaft member, but the phase together with shaft member
Fixed broken rock part is rotated, thus, rate of depreciation is lower, and the life-span is longer, and stability is more preferable.
Or, above-mentioned shaft member is different from the wheel body that wheel body is fixedly connected to form, and broken rock part is relatively fixed together with shaft member
Rotate, it would however also be possible to employ other forms, such as mixing broken rock mechanism also includes shaft member, as shown in Fig. 4,7 and 8, is set on the wheel body
Axis hole, the shaft member and the shaft hole matching are equipped with, the shaft member is fixedly installed in recess sidewalls, so that wheel body can be relative
The shaft member is rotated, and the parts for participating in rolling are less, and quality is lighter, and stability is more preferable.
Further, as shown in figs 6-8, lubrication channel is provided with the shaft member, the lubrication channel is included along described
Shaft member diametric(al) arrangement radial hole, along the shaft member axis arrange axial hole and along the shaft member circumferencial direction set
Annular groove, the radial hole is communicated with the axial hole, and the radial hole is communicated with the annular groove, in this way, can be in lubrication channel
Lubricating oil is inside passed through, rate of depreciation is reduced, the lubrication channel is simple in construction, and greasy property is good, more fully, so that rolling broken-rock
The life-span of part is longer, specifically, as illustrated, be provided with the oilhole communicated with a radial hole on fixed broken rock part,
To allow lubricating oil to enter lubrication channel by oilhole.
Present patent application is also disclosed and set on a kind of long-life Mixed drilling bit, such as Fig. 2 and 3, including body, the body
There is above-mentioned mixing broken rock mechanism, so that long-life Mixed drilling bit has all technique effects of mixing broken rock mechanism.
Further, such as Fig. 2 and 3, long-life Mixed drilling bit includes mixing broken rock mechanism described at least two, each compound
The fixed broken rock part in a rolling broken-rock part, a mixing broken rock mechanism is provided with broken rock mechanism
The fixed broken rock part mixed with another described in broken rock mechanism is unequal relative to the distance of Z axis, can form two
Individual broken rock cheats ring, further the moment of torsion of reduction drill bit, reduction drill bit transverse direction, axial direction, twisting vibration so that bit tool face is more
It is easily controlled；Meanwhile, it can also improve efficiency of breaking rock.
The fixed broken rock part is additionally provided with the body, as illustrated, the fixation broken rock part is PDC wings,
In this way, efficiency of breaking rock is higher, the life-span is longer, and can further reduce the moment of torsion of drill bit, reduce drill bit transverse direction, axial direction, torsion
Vibration so that bit tool face is more prone to control.
Gear wheel is additionally provided with the body, specifically, the PDC wings on conventional PDC- gear wheels composite drill bit are replaced by
Above-mentioned compound broken rock mechanism, in this way, efficiency of breaking rock is higher, the life-span is longer.
Any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., should be included in
Within protection scope of the present invention.
Claims (9)
1. one kind mixing broken rock mechanism, it is characterised in that including rolling broken-rock part and fixed broken rock part, the fixed broken rock
Be provided with recess on part, the rolling broken-rock part with can relatively described fixed broken rock part be pivotably arranged in institute
State in recess, the rolling broken-rock part includes the broken rock portion of wheel body and the circumferential directions along the wheel body, the wheel body
Thickness D and the broken rock portion in the ratio between the size d of the wheel body thickness direction 1.1≤D/d≤4.
2. mixing broken rock mechanism according to claim 1, it is characterised in that the broken rock portion is PDC cutting tooths or tooth,
The two circles broken rock portion is provided with the wheel body.
3. mixing broken rock mechanism according to claim 1 or 2, it is characterised in that also including shaft member, the shaft member is arranged on
On the side wall of the recess, the shaft member is fixedly connected with the wheel body.
4. mixing broken rock mechanism according to claim 1 or 2, it is characterised in that also including shaft member, set on the wheel body
There are axis hole, the shaft member and the shaft hole matching, the shaft member is fixedly installed in recess sidewalls.
5. the mixing broken rock mechanism according to claim 1-3 any one, it is characterised in that profit is provided with the shaft member
Slide-through road, the lubrication channel includes the radial hole arranged along the shaft member diametric(al), the axle arranged along the shaft member axis
The annular groove that Xiang Konghe is set along the shaft member circumferencial direction, the radial hole is communicated with the axial hole, the radial hole and institute
Annular groove is stated to communicate.
6. a kind of long-life Mixed drilling bit, including body, it is characterised in that claim 1-5 is provided with the body any
Broken rock mechanism described in one.
7. Mixed drilling bit according to claim 6, it is characterised in that including mixing broken rock mechanism described at least two, often
The fixation being provided with individual compound broken rock mechanism in a rolling broken-rock part, a mixing broken rock mechanism is broken
The fixed broken rock part that petrosa part is mixed with another described in broken rock mechanism is unequal relative to the distance of Z axis.
8. the Mixed drilling bit according to claim 6 or 7, it is characterised in that the fixation is additionally provided with the body and is broken
Petrosa part.
9. Mixed drilling bit according to claim 6, it is characterised in that be additionally provided with gear wheel on the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286929.9A CN107060653B (en) | 2017-04-27 | 2017-04-27 | Mixed rock breaking mechanism and long-service-life mixed drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286929.9A CN107060653B (en) | 2017-04-27 | 2017-04-27 | Mixed rock breaking mechanism and long-service-life mixed drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107060653A true CN107060653A (en) | 2017-08-18 |
| CN107060653B CN107060653B (en) | 2023-11-21 |
Family
ID=59605034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286929.9A Active CN107060653B (en) | 2017-04-27 | 2017-04-27 | Mixed rock breaking mechanism and long-service-life mixed drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107060653B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH428627A (en) * | 1965-02-09 | 1967-01-31 | Graefer Albrecht Dr Ing E H | Roller chisel |
| EP0408379A1 (en) * | 1989-07-14 | 1991-01-16 | David Patrick Payne | Improvements in drills |
| WO1995018692A1 (en) * | 1994-01-07 | 1995-07-13 | Josef Plattner | Cable-saw machine |
| US20050183892A1 (en) * | 2004-02-19 | 2005-08-25 | Oldham Jack T. | Casing and liner drilling bits, cutting elements therefor, and methods of use |
| CN203796171U (en) * | 2013-11-07 | 2014-08-27 | 杨立源 | Composite drill bit |
| US20140326515A1 (en) * | 2011-12-05 | 2014-11-06 | Smith International, Inc. | Rotating cutting elements for pdc bits |
| CN104196456A (en) * | 2014-08-27 | 2014-12-10 | 西南石油大学 | PDC drill tool with alternating cutting trajectory |
| US20150368977A1 (en) * | 2013-02-07 | 2015-12-24 | Liyuan YANG | Composite drill bit provided with disc-type cutting structure on cutter blade |
| CN205422543U (en) * | 2016-04-05 | 2016-08-03 | 刘哲岳 | Strike composite power coupling bearing of cutting and do not have sealed long -life geology drill bit |
| CN106320989A (en) * | 2016-11-03 | 2017-01-11 | 西南石油大学 | Diamond drill bit |
| CN205895148U (en) * | 2016-08-09 | 2017-01-18 | 武汉亿斯达工具有限公司 | Roll and protect footpath PDC drill bit |
| CN206129165U (en) * | 2016-11-03 | 2017-04-26 | 西南石油大学 | Diamond drill bit |
-
2017
- 2017-04-27 CN CN201710286929.9A patent/CN107060653B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH428627A (en) * | 1965-02-09 | 1967-01-31 | Graefer Albrecht Dr Ing E H | Roller chisel |
| EP0408379A1 (en) * | 1989-07-14 | 1991-01-16 | David Patrick Payne | Improvements in drills |
| WO1995018692A1 (en) * | 1994-01-07 | 1995-07-13 | Josef Plattner | Cable-saw machine |
| US20050183892A1 (en) * | 2004-02-19 | 2005-08-25 | Oldham Jack T. | Casing and liner drilling bits, cutting elements therefor, and methods of use |
| US20140326515A1 (en) * | 2011-12-05 | 2014-11-06 | Smith International, Inc. | Rotating cutting elements for pdc bits |
| US20150368977A1 (en) * | 2013-02-07 | 2015-12-24 | Liyuan YANG | Composite drill bit provided with disc-type cutting structure on cutter blade |
| CN203796171U (en) * | 2013-11-07 | 2014-08-27 | 杨立源 | Composite drill bit |
| CN104196456A (en) * | 2014-08-27 | 2014-12-10 | 西南石油大学 | PDC drill tool with alternating cutting trajectory |
| CN205422543U (en) * | 2016-04-05 | 2016-08-03 | 刘哲岳 | Strike composite power coupling bearing of cutting and do not have sealed long -life geology drill bit |
| CN205895148U (en) * | 2016-08-09 | 2017-01-18 | 武汉亿斯达工具有限公司 | Roll and protect footpath PDC drill bit |
| CN106320989A (en) * | 2016-11-03 | 2017-01-11 | 西南石油大学 | Diamond drill bit |
| CN206129165U (en) * | 2016-11-03 | 2017-04-26 | 西南石油大学 | Diamond drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107060653B (en) | 2023-11-21 |
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