CN203729884U - Diamond-impregnated drill bit with arc teeth - Google Patents
Diamond-impregnated drill bit with arc teeth Download PDFInfo
- Publication number
- CN203729884U CN203729884U CN201420044683.6U CN201420044683U CN203729884U CN 203729884 U CN203729884 U CN 203729884U CN 201420044683 U CN201420044683 U CN 201420044683U CN 203729884 U CN203729884 U CN 203729884U
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- impregnated
- diamond
- arc
- drill bit
- bit
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Abstract
The utility model discloses a diamond-impregnated drill bit with arc teeth, and belongs to the technical field of drill bits for exploration. The diamond-impregnated drill bit comprises a connector and a drill bit body connected to the connector. The arc diamond-impregnated teeth are transversely distributed in the crown area of the drill bit body and cover the crown outline of the drill bit body. PDC composite sheets are distributed in the center area of the drill bit body. According to the diamond-impregnated drill bit with the arc teeth, the arc diamond-impregnated teeth are adopted, the drill bit body is matched with a round well bottom formed by rotating drilling of the arc diamond-impregnated teeth, the contact area of the diamond-impregnated teeth and the rock at the well bottom is increased, and accordingly the mechanical drilling speed of well drilling is improved. The diamond-impregnated teeth are arranged on the surface of the drill bit body, a part of the drill bit body cannot make contact with the rock at the well bottom, and therefore the drill bit body cannot be abraded by the rock, the rock breaking efficiency is improved, and the service life of the drill bit is prolonged.
Description
Technical field
The utility model relates to the probing drill bit that the fields such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology are used, and relates to concretely have the diamond-impregnated bit of arc-shaped gear.
Background technology
Drill bit be in drilling engineering in order to fractured rock, form the rock crushing tool of pit shaft.
diamond-impregnated bitbe widely used in now during probing produces, have that anti-pressure ability is large, abrasion-resistance is strong, the good feature of impact resistance, be applicable to probing PDC drill bit and rock bit are difficult to probing, there is the compact conglomerate of high rigidity, high abrasive stratum.
diamond-impregnated bitbeing distributed in bit matrix thinner diamond uniform exactly, this drill bit is furnished with the carcass of different hardness, can creep into the rock of various hardness, particularly creep into rock more than medium hardness, drilling efficiency is high, cost is low, core recovery is high, drillhole curvature is little, can creep into the boring at any inclination angle.Because the diamond particles of diamond-impregnated bit is thinner, volumetric fracture effect for rock stratum is very little, actual Breaking Rock Mechanism is similar to wheel grinding workpiece, with many on labial surface and little hard points (diamond) to workpiece (hole bed rock stone) delineate, grinding, and along with wearing and tearing gradually and the disappearance of original hard point, carcass is also in continuous abrasion, and new hard point is exposed again out to work on.In fact,
diamond-impregnated bitin high-speed grinding work, self is also consumed, due to its " certainly grinding sword effect " often in sharp keen state.
Because the diamond particles in impregnated with diamond tooth has high abrasion resistance, so diamond-impregnated bit has long-life advantage, can make drill bit obtain higher drilling depth.But generally, the rate of penetration of diamond-impregnated bit is all lower than rock bit and PDC drill bit, need to coordinate well dynamic instrument (high-speed screws drilling tool or turbodrill use), thereby allow, use the high cost of diamond-impregnated bit.If do not use high-speed screws or turbodrill, the rate of penetration of diamond-impregnated bit can be slower, and efficiency of breaking rock is lower, and overall economic efficiency is even lower than rock bit and PDC drill bit.
Utility model content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, a kind of diamond-impregnated bit of arc-shaped gear is provided, adopt the impregnated with diamond tooth of arc form, at the bottom of the circular well that drill bit and its rotary drilling are formed, coincide, increase the contact area of impregnated tooth and bottom rock, thereby improved the rate of penetration of drilling well; Simultaneously impregnated with diamond tooth is arranged in the surface of drill body, and drill body part can not participated in and the contacting of bottom rock, so drill body do not wear and tear by rock, improves efficiency of breaking rock, extends drilling life of bit.
The technical solution adopted in the utility model is as follows:
The diamond-impregnated bit of arc-shaped gear of the present utility model, comprise joint and be connected in the bit body on joint, in crown areas on described bit body, lateral arrangement has arc impregnated with diamond tooth, make described arc impregnated with diamond tooth cover the crown profile line of bit body, in the heart portion region on described bit body, be furnished with PDC composite sheet.
At present, common diamond-impregnated bit there is no to leave high-speed screws or the independent reason of using of turbodrill is: the impregnated tooth employing straight cylinder form on drill bit, the contact area in impregnated tooth and shaft bottom is less, thereby makes its efficiency of breaking rock lower.The utility model is the deficiency based on common diamond-impregnated bit exists in prior art just, change thinking and impregnated tooth is adopted to the arc impregnated with diamond tooth of cylindrical structural, and the whole lateral arrangement of this arc impregnated with diamond tooth are in the crown profile part of bit body, in the time of at the bottom of bit creeps into the circular well of its formation, arc impregnated with diamond tooth can be with identical at the bottom of circular well, increased the contact area of impregnated tooth and bottom rock, thereby improve the rate of penetration of drilling well, arc impregnated with diamond tooth and bit creep at the bottom of the circular well of formation consistent, increased the stability of drill bit, and the whole lateral arrangement of impregnated tooth are on drill bit, therefore impregnated tooth is difficult for being impacted and fractureing by conglomerate, improved the application life of drill bit, and the crown areas of whole bit body is all arc impregnated with diamond tooth, drill body part can not participated in and the contacting of bottom rock, drill body is not is not worn and torn by rock, extend drilling life of bit, wherein arc impregnated with diamond tooth adopts soldering processes to be cemented on bit body, has avoided the impact of sintering permanent tooth process on impregnated tooth performance, can extend the application life of drill bit.Drill bit heart portion adopts PDC composite sheet rock cutting, and drill bit heart portion only has the crown of PDC composite sheet partly to contact rock, therefore can improve the contact stress of drill bit and rock, reaches the object that improves efficiency of breaking rock.
The diamond-impregnated bit of arc-shaped gear of the present utility model, the column structure that described arc impregnated with diamond tooth is circular arc, some arc impregnated with diamond teeth are transversely arranged and be brazed on the crown profile line of bit body successively, the center line of described arc impregnated with diamond tooth is circular arc, and the center of this circular arc overlaps with the rotation of bit body.
Owing to having adopted said structure, the column structure that arc impregnated with diamond tooth is wherein circular arc, and some arc impregnated with diamond teeth are transversely arranged and be brazed on the crown profile line of bit body successively, make to be arc impregnated with diamond tooth in the crown profile part of whole bit body, make drill bit in drilling process, drill body part can not participate in and the contacting of bottom rock, and drill body is not is not worn and torn by rock, extends drilling life of bit, the center line of arc impregnated with diamond tooth is circular arc in addition, the center of this circular arc overlaps with the rotation of bit body, arc impregnated with diamond tooth is distributed in the crown areas of bit body equably, and evenly distributed centered by the rotation of bit body, when drill bit is in drilling process, arc impregnated with diamond tooth can be coincide fully with at the bottom of circular well, there will not be the phenomenons such as eccentric, thereby increased the contact area of impregnated tooth and bottom rock, thereby improve the rate of penetration of drilling well, impregnated tooth is difficult for being impacted and fractureing by conglomerate, improved the application life of drill bit.
The diamond-impregnated bit of arc-shaped gear of the present utility model, the shape of the end surface shape at described arc impregnated with diamond tooth two ends is respectively circular, oval and/or straightway is combined with circular arc line segment composition.
Owing to having adopted said structure, this arc impregnated with diamond tooth is in order to increase Surface Contact area, adopt column structure, this arc impregnated with diamond tooth can adopt various structures simultaneously, wherein the cross section of arc impregnated with diamond tooth and end face can be combined the shape of composition for circular, oval or straightway with circular arc line segment, wherein the two ends of arc impregnated with diamond tooth can be the same or different, when the cross sectional shape at its two ends is different, can be that an end face is circle, other end be oval; Or an end face is oval, other end is that straightway is combined the shape of composition with circular arc line segment; Or an end face is circular, other end is that straightway is combined the shape of composition with circular arc line segment.
The diamond-impregnated bit of arc-shaped gear of the present utility model, the end surface shape at described arc impregnated with diamond tooth two ends is identical or different.
Owing to having adopted said structure, according to the difference of drill bit, select the impregnated tooth of different structure, wherein can select the end surface shape at column two ends different with area, can be that column one end face is circle, other end is oval; Or an end face is oval, other end is that straightway is combined the shape of composition with circular arc line segment; Or an end face is circular, other end is that straightway is combined the shape of composition with circular arc line segment; It can certainly be the little structure in large one end, one end of column; In addition, in order to make drill bit in use, surperficial stress equalization, the end surface shape at arc impregnated with diamond tooth two ends can be made identical, thereby be convenient to manufacture.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are:
1, the diamond-impregnated bit of arc-shaped gear of the present utility model, adopt the impregnated with diamond tooth of arc form, at the bottom of the circular well that drill bit and its rotary drilling are formed, coincide, increased the contact area of impregnated tooth and bottom rock, thereby improve the rate of penetration of drilling well;
2, the diamond-impregnated bit of arc-shaped gear of the present utility model, impregnated with diamond tooth is arranged in the surface of drill body, drill body part can not participated in and the contacting of bottom rock, so drill body is not is not worn and torn by rock, improve efficiency of breaking rock, extend drilling life of bit.
Accompanying drawing explanation
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of drill bit in the utility model;
Fig. 2 is the front view of drill bit in the utility model.
Fig. 3 is the top view of Fig. 2.
Mark in figure: 1-bit body, 2-arc impregnated with diamond tooth, 3-PDC composite sheet, 4-joint, 5-nozzle.
The specific embodiment
Disclosed all features in this manual, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this manual (comprising any accessory claim, summary), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
As shown in Figure 1 to Figure 3, the diamond-impregnated bit of arc-shaped gear of the present utility model, comprise joint 4 and be connected in the bit body 1 on joint 4, in crown areas on described bit body 1, lateral arrangement has arc impregnated with diamond tooth 2, make described arc impregnated with diamond tooth 2 cover the crown profile line of bit body 1, the column structure that wherein arc impregnated with diamond tooth 2 is circular arc, some arc impregnated with diamond teeth 2 are transversely arranged and be brazed on the crown profile line of bit body 1 successively, the center line of described arc impregnated with diamond tooth 2 is circular arc, the center of this circular arc overlaps with the rotation of bit body 1, on outer wimble fraction on described bit body 1, be furnished with some holes, described bit body 1 is provided with and offers some grooves, in heart portion region on described bit body 1, be furnished with PDC composite sheet 3, in the heart portion region on described bit body 1, be provided with the nozzle 5 being communicated with joint 4.
At present, common diamond-impregnated bit there is no to leave high-speed screws or the independent reason of using of turbodrill is: the impregnated tooth employing straight cylinder form on drill bit, the contact area in impregnated tooth and shaft bottom is less, thereby makes its efficiency of breaking rock lower.The utility model is the deficiency based on common diamond-impregnated bit exists in prior art just, change thinking and impregnated tooth is adopted to the circular arc impregnated with diamond tooth of cylindrical structural, and the whole lateral arrangement of this arc impregnated with diamond tooth are in the crown profile part of bit body, in the time of at the bottom of bit creeps into the circular well of its formation, arc impregnated with diamond tooth can be with identical at the bottom of circular well, increased the contact area of impregnated tooth and bottom rock, thereby improve the rate of penetration of drilling well, arc impregnated with diamond tooth and bit creep at the bottom of the circular well of formation consistent, increased the stability of drill bit, and the whole lateral arrangement of impregnated tooth are on drill bit, therefore impregnated tooth is difficult for being impacted and fractureing by conglomerate, improved the application life of drill bit, and the crown areas of whole bit body is all arc impregnated with diamond tooth, drill body part can not participated in and the contacting of bottom rock, drill body is not is not worn and torn by rock, extend drilling life of bit, wherein arc impregnated with diamond tooth adopts soldering processes to be cemented on bit body, has avoided the impact of sintering permanent tooth process on impregnated tooth performance, can extend the application life of drill bit.Drill bit heart portion adopts PDC composite sheet rock cutting, and drill bit heart portion only has the crown of PDC composite sheet partly to contact rock, therefore can improve the contact stress of drill bit and rock, reaches the object that improves efficiency of breaking rock.
In order to increase arc impregnated with diamond tooth surface contact area, therefore this arc impregnated with diamond tooth adopts column structure, this arc impregnated with diamond tooth can adopt various structures, wherein the end surface shape at arc impregnated with diamond tooth 2 two ends can be various structures, the needs that use according to actual production, may be selected to be circle, oval, and/or straightway is combined the shape forming with circular arc line segment, wherein the two ends of arc impregnated with diamond tooth can be the same or different, when the cross sectional shape at its two ends is different, can be that an end face is for circular, other end is oval, or an end face is oval, other end is that straightway is combined the shape of composition with circular arc line segment, or an end face is circular, other end is that straightway is combined the shape of composition with circular arc line segment.
The diamond-impregnated bit of arc-shaped gear of the present utility model, the impregnated with diamond tooth of employing arc form, coincide at the bottom of the circular well that drill bit and its rotary drilling are formed, and has increased the contact area of impregnated tooth and bottom rock, thereby improves the rate of penetration of drilling well; Impregnated with diamond tooth is arranged in the surface of drill body, and drill body part can not participated in and the contacting of bottom rock, so drill body do not wear and tear by rock, improves efficiency of breaking rock, extends drilling life of bit.
The utility model is not limited to the aforesaid specific embodiment.The utility model expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (4)
1. the diamond-impregnated bit of arc-shaped gear, it is characterized in that: it comprises joint (4) and is connected in the bit body (1) on joint (4), in crown areas on described bit body (1), lateral arrangement has arc impregnated with diamond tooth (2), make described arc impregnated with diamond tooth (2) cover the crown profile line of bit body (1), in the heart portion region on described bit body (1), be furnished with PDC composite sheet (3).
2. the diamond-impregnated bit of arc-shaped gear as claimed in claim 1, it is characterized in that: described arc impregnated with diamond tooth (2) is the column structure of circular arc, some arc impregnated with diamond teeth (2) are transversely arranged and be brazed on the crown profile line of bit body (1) successively, the center line of described arc impregnated with diamond tooth (2) is circular arc, and the center of this circular arc overlaps with the rotation of bit body (1).
3. the diamond-impregnated bit of arc-shaped gear as claimed in claim 1 or 2, is characterized in that: the end surface shape at described arc impregnated with diamond tooth (2) two ends is respectively circular, oval and/or straightway and is combined the shape of composition with circular arc line segment.
4. the diamond-impregnated bit of arc-shaped gear as claimed in claim 3, is characterized in that: the end surface shape at described arc impregnated with diamond tooth (2) two ends is identical or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044683.6U CN203729884U (en) | 2014-01-24 | 2014-01-24 | Diamond-impregnated drill bit with arc teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044683.6U CN203729884U (en) | 2014-01-24 | 2014-01-24 | Diamond-impregnated drill bit with arc teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729884U true CN203729884U (en) | 2014-07-23 |
Family
ID=51199965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044683.6U Expired - Fee Related CN203729884U (en) | 2014-01-24 | 2014-01-24 | Diamond-impregnated drill bit with arc teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729884U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758463A (en) * | 2014-01-24 | 2014-04-30 | 四川万吉金刚石钻头有限公司 | Diamond-impregnated bit of arc tooth |
| WO2018000781A1 (en) * | 2016-06-28 | 2018-01-04 | 四川川庆石油钻采科技有限公司 | Double-cutting impregnated diamond drill |
-
2014
- 2014-01-24 CN CN201420044683.6U patent/CN203729884U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758463A (en) * | 2014-01-24 | 2014-04-30 | 四川万吉金刚石钻头有限公司 | Diamond-impregnated bit of arc tooth |
| WO2018000781A1 (en) * | 2016-06-28 | 2018-01-04 | 四川川庆石油钻采科技有限公司 | Double-cutting impregnated diamond drill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20200124 |