CN208396659U - A kind of anti abrasive compact bit of outer diameter - Google Patents
A kind of anti abrasive compact bit of outer diameter Download PDFInfo
- Publication number
- CN208396659U CN208396659U CN201821068104.6U CN201821068104U CN208396659U CN 208396659 U CN208396659 U CN 208396659U CN 201821068104 U CN201821068104 U CN 201821068104U CN 208396659 U CN208396659 U CN 208396659U
- Authority
- CN
- China
- Prior art keywords
- bit
- outer diameter
- anti abrasive
- abrasive compact
- cylindrical composite
- 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.)
- Active
Links
Abstract
The utility model relates to compact bit fields, more particularly to a kind of anti abrasive compact bit of outer diameter, including the bar portion and bizet on bit body, the bizet includes wing and chip space, the tapering of the wing is provided with cutting tooth, the cutting tooth includes cylindrical composite piece and the outer ring for being looped around cylindrical composite piece outer layer, between the outer ring and cylindrical composite piece there are each point on gap and gap being equidistant to cylindrical composite piece, the height of the outer ring is lower than cylindrical composite piece, solves the technological deficiency that composite sheet tooth post present in prior art problem is easily chipping in drilling process or fractures.The utility model provides a kind of with being not susceptible to collapse tooth and fall the compact bit of piece.
Description
Technical field
The utility model relates to compact bit fields, and in particular to a kind of anti abrasive compact bit of outer diameter.
Background technique
From the point of view of the wear characteristic of PDC drill bit, can be divided into two kinds of abrasions: one is normal wear.Composite sheet cutting tooth
Contact and friction accomplished continuously or intermittently are generated with rock, thus fractured rock.It is produced during cutting tooth mutually rubs with rock
Raw micro-cutting, delineation, scratch etc. make its abrasion, rust, the more curved side for being characterized in polycrystalline diamond layer and contacting with stratum
There is continuous channel form polishing scratch in face and tooth post, but seldom cracked at groove, and the polycrystalline diamond layer at other positions
Do not occur delamination.Another kind abrasion be heel and toe wear, such as collapse tooth, fall piece, polycrystalline diamond layer falls off；Diamond is multiple
The operating condition for closing piece drill bit is extremely harsh, and PDC not only bears huge pressure at work, while also subject to the impact of alternation
Power, the compound action of various power cause the friction in cutting process extremely fierce.In the specific use process, due to geological conditions
There is places lack of standardization for complexity, manual operation, process etc., make the advantage of PDC fail to bring into play well, make
At the loss that should not have.
Utility model content
For composite sheet tooth post present in prior art problem in drilling process the easily chipping or technology that fractures
Defect.The utility model provides a kind of new anti abrasive compact bit of outer diameter, the anti abrasive compact bit tool of the outer diameter
There is the performance for being not susceptible to collapse tooth He falling piece.
The purpose of this utility model is achieved through the following technical solutions:
To solve drawbacks described above, a kind of anti abrasive compact bit of outer diameter is provided, including the bar portion and hat on bit body
Portion, the bizet include wing and chip space, and the tapering of the wing is provided with cutting tooth, and the cutting tooth includes cylindrical multiple
It closes piece and is looped around the outer ring of cylindrical composite piece outer layer, there are on gap and gap between the outer ring and cylindrical composite piece
Each point being equidistant to cylindrical composite piece, the height of the outer ring is lower than cylindrical composite piece；The gauge of the wing
The end of section is provided with back-reaming cutting teeth；Water hole, the water channel among the water hole and bit body are provided on the chip space
Connection is provided with nozzle on the water hole.Because the stratum containing hard interbedded layer is a weight for leading to cutting tooth heel and toe wear
Factor is wanted, therefore designs a circle auxiliary cutting element in the outer ring of composite sheet cutting tooth, the height of outer ring is lower than composite sheet, is containing
When creeping into the stratum of hard interbedded layer, advantageously ensure that cutting tooth can continuously creep into subterranean layer, i.e. guarantee rate of penetration is stablized not
Become, reduces a possibility that drill bit causes various vibrations at the interface on soft or hard stratum, increase the stability of bit operation.Work as brill
After head enters compared with hard formation, contact with stratum deeper, compound pad wear is more serious, the supplementary structure of outer ring thus reduces effect
Load on cutting tooth diamond layer reduces heat aggregation and tungsten carbide wear area and impact probability.
As a further improvement, the outer ring is hard alloy, and the hardness that hard alloy has due to itself is higher,
It is commonly used for the production of drill bit, using the biggish hard alloy of hardness as outer loop material, effectively has divided to have walked composite sheet cutting tooth
On load.
As a further improvement, the outer cone length of the wing is greater than inner cone, and the cutting tooth is arranged on bit body side
The quantity of edge is greater than close to the position at bit body center.
As a further improvement, the tooth form of the back-reaming cutting teeth is taper or cylinder, and setting is effective in reverse direction
The bit freezing situation for reducing drill bit and occurring in underground activities, drill bit is above mentioned by back water ocular structure, it is laborsaving.
As a further improvement, the junction of the bar portion and bizet is arc-shaped transition face, and the bar portion presents width
Under narrow frustum cone structure.
As a further improvement, the jet angle of the nozzle is towards chip space.
Compared with prior art, the utility model has the beneficial effects that:
Effect one, the cutting tooth of the utility model include cylindrical composite piece and are looped around the outer of cylindrical composite piece outer layer
Circle, outer ring is hard alloy, and PDC drill bit is in drilling process, when being drilled into hard formation from soft formation, due to by bit profile shape
Limitation, bit face cut tooth contact different hardness stratum, cutting tooth cut stratum when unbalance stress, cause drill bit cannot
It works normally, bit bouncing, bouncing of drilling tool phenomenon occurs, by the setting of composite sheet cutting tooth in a circle hard alloy, abrasion makes assisted machining
Element is contacted with stratum, thus reduces the load acted on cutting tooth diamond layer, extends the longevity of composite sheet cutting tooth
Life；
Effect two, the utility model are provided with back-reaming cutting teeth in the end of the gauge section of wing, are arranged in reverse direction
It is effectively reduced the bit freezing situation that drill bit occurs in underground activities, is above mentioned drill bit by back water ocular structure, it is laborsaving, also not
It will appear mud drum phenomenon；
Effect three, the quantity that bit body edge is arranged in cutting tooth are greater than close to the position at bit body center, and drill bit is boring
Into when active chip removal, impact that drill margin is subject to is maximum, can be quickly by mud when creeping into so that each force on PDC cutter is balanced
Slurry arranges, and does not generate the breaking capacity for improving drill bit and the centripetal force for improving drill bit, improves drilling life of bit.
Detailed description of the invention
Fig. 1 is the overall structure diagram of compact bit；
Fig. 2 is compact bit side view；
Fig. 3 is the schematic diagram of bit body bizet；
In figure, 1- bar portion, 2- bizet, 3- wing, 4- chip space, 5- cutting tooth, 6- cylindrical composite piece, the outer ring 7-, 8-
Gauge section, 9- back-reaming cutting teeth, the water hole 10-, 11- water channel, the arc-shaped transition face of 12-.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Usually described in attached drawing here
It can arrange and design with a variety of different configurations with the component of the utility model embodiment shown.Therefore, below to
The detailed description of the embodiments of the present invention provided in attached drawing is not intended to limit the model of claimed invention
It encloses, but is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, is fallen within the protection scope of the utility model.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Below by specific embodiment and in conjunction with attached drawing, the utility model is further described in detail.
Embodiment 1
The present embodiment provides a kind of anti abrasive compact bits of outer diameter, including the bar portion 1 and bizet 2 on bit body, institute
Stating bizet 2 includes wing 3 and chip space 4；The outer cone length of the wing 3 is greater than inner cone；The tapering of the wing 3, which is provided with, cuts
Tooth 5 is cut, the cutting tooth 5 includes cylindrical composite piece 6 and the outer ring 7 for being looped around 6 outer layer of cylindrical composite piece, the outer ring 7
Between cylindrical composite piece 6 there are each point on gap and gap being equidistant to cylindrical composite piece 6, the outer ring 7
Height be lower than cylindrical composite piece 6, the outer ring 7 be hard alloy；Drill bit is drilled into hard place in drilling process, from soft formation
When layer, due to being limited by bit profile shape, bit face cuts the stratum of tooth contact different hardness, and cutting tooth cuts stratum
When unbalance stress, cause drill bit cisco unity malfunction, bit bouncing, bouncing of drilling tool phenomenon occur.The load acted on drill bit is mainly concentrated
In the cutting tooth of the fixation of cutting hard formation, outer cone length is big greater than the quantity that bit body edge is arranged in inner cone, cutting tooth 5
It in the position close to bit body center, enables to each force on PDC cutter balanced, can quickly be arranged mud in drilling,
The breaking capacity for improving drill bit and the centripetal force for improving drill bit are not generated, improve drilling life of bit.The guarantor of the wing 3
The end of diameter section 8 is provided with back-reaming cutting teeth 9, and the tooth form of the back-reaming cutting teeth 9 is taper or cylinder, sets in reverse direction
The bit freezing situation for reducing drill bit and occurring in underground activities being set effective, is above mentioned drill bit by back water ocular structure, laborsaving, also
It is not in mud drum phenomenon；Water hole 10, the water hole 10 and the water channel 11 among bit body are provided on the chip space 4
It is logical, nozzle is provided on the water hole 10, the jet angle of the nozzle, can be by the mud etc. in drilling process towards chip space
Substance quickly washes away, and will not continue to cause corrosion and damage.The junction of the bar portion 1 and bizet 2 is arc-shaped transition
Face 12, arc-shaped transition face reduce the friction area of drill bit bar portion and ragstone for right angle, and reducing need not
The abrasion wanted；
Specifically, the bar portion 1 frustum cone structure with a narrow upper and lower width, narrow design meets mechanics design under preceding, reduces
Abrasion.
The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to herein
Disclosed form, should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and
Can be in contemplated scope described herein, modifications can be made through the above teachings or related fields of technology or knowledge.And this field
The modifications and changes that personnel are carried out do not depart from the spirit and scope of the utility model, then all should be in right appended by the utility model
It is required that protection scope in.
Claims (8)
1. a kind of anti abrasive compact bit of outer diameter, which is characterized in that including the bar portion (1) and bizet (2) on bit body, institute
Stating bizet (2) includes wing (3) and chip space (4)；
The tapering of the wing (3) is provided with cutting tooth (5), and the cutting tooth (5) includes cylindrical composite piece (6) and is looped around
The outer ring (7) of cylindrical composite piece (6) outer layer, there are on gap and gap between the outer ring (7) and cylindrical composite piece (6)
Each point being equidistant to cylindrical composite piece (6), the height of the outer ring (7) is lower than cylindrical composite piece (6)；The knife
The end of the gauge section (8) of the wing (3) is provided with back-reaming cutting teeth (9)；
It is provided with water hole (10) on the chip space (4), water channel (11) connection among the water hole (10) and bit body is described
Water hole is provided with nozzle on (10).
2. the anti abrasive compact bit of outer diameter according to claim 1, which is characterized in that the outer ring (7) is hard
Alloy.
3. the anti abrasive compact bit of outer diameter according to claim 1, which is characterized in that the outer cone of the wing (3)
Length is greater than inner cone.
4. the anti abrasive compact bit of outer diameter according to claim 1, which is characterized in that the back-reaming cutting teeth
(9) tooth form is taper or cylinder.
5. the anti abrasive compact bit of outer diameter according to claim 1, which is characterized in that the bar portion (1) and bizet
(2) junction is arc-shaped transition face (12).
6. the anti abrasive compact bit of outer diameter according to claim 5, which is characterized in that the bar portion (1) presents width
Under narrow frustum cone structure.
7. the anti abrasive compact bit of outer diameter according to claim 1, which is characterized in that the jet angle court of the nozzle
To chip space.
8. the anti abrasive compact bit of outer diameter according to claim 1, which is characterized in that cutting tooth (5) setting
Quantity at bit body edge is greater than close to the position at bit body center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068104.6U CN208396659U (en) | 2018-07-06 | 2018-07-06 | A kind of anti abrasive compact bit of outer diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821068104.6U CN208396659U (en) | 2018-07-06 | 2018-07-06 | A kind of anti abrasive compact bit of outer diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208396659U true CN208396659U (en) | 2019-01-18 |
Family
ID=65130695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821068104.6U Active CN208396659U (en) | 2018-07-06 | 2018-07-06 | A kind of anti abrasive compact bit of outer diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208396659U (en) |
-
2018
- 2018-07-06 CN CN201821068104.6U patent/CN208396659U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106089087B (en) | A kind of punching composite drill bit suitable for bad ground | |
| WO2013029347A1 (en) | Composite bit with rotary cut rock-breaking function | |
| CN102434105A (en) | Composite bit with rotary cut rock-breaking function | |
| CN109209241A (en) | A kind of PDC drill bit suitable for high-temperature drilling | |
| CN110359847A (en) | A kind of three concentric drill bits of gear wheel PDC | |
| CN207332768U (en) | A kind of shockproof PDC drill bit | |
| CN211230253U (en) | Anti-balling drill bit with conical teeth | |
| CN211623329U (en) | Hard stratum mixed tooth PDC drill bit | |
| CN106089086B (en) | A kind of bad ground long-life re-drill bit | |
| CN203452651U (en) | Strong cone PDC (Polycrystalline Diamond Compact) vibration reduction acceleration drill bit | |
| CN110145240A (en) | A kind of diamond bit suitable for hard formation drilling | |
| US11326402B2 (en) | Hybrid bit with roller cones having inserts | |
| CN109681122A (en) | A kind of two rank step scraper | |
| CN208364057U (en) | A kind of high-strength abrasion-proof drill bit | |
| CN208396659U (en) | A kind of anti abrasive compact bit of outer diameter | |
| WO2003091531A1 (en) | A roller bit with a journal pin offset from the central axis thereof | |
| CN202441267U (en) | Combined drill bit having rock-breaking function through rotary cutting | |
| CN211448522U (en) | Composite drill bit with independent cutting structure at core part | |
| CN202900050U (en) | Diamond impregnated side-wall coring bit | |
| CN114893128B (en) | Drill bit for petroleum drilling and preparation process thereof | |
| CN112459725A (en) | PDC drill bit for geothermal well | |
| CN201314198Y (en) | Polycrystalline diamond composite sheet | |
| CN208122767U (en) | A kind of active radius retention pad structure of diamond bit | |
| CN208106329U (en) | A kind of diamond bit suitable for hard formation drilling | |
| CN207160988U (en) | The PDC drill bit that a kind of nose is strengthened |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |