CN102678052A - Disc cutter composite drill bit - Google Patents
Disc cutter composite drill bit Download PDFInfo
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- CN102678052A CN102678052A CN2012101555874A CN201210155587A CN102678052A CN 102678052 A CN102678052 A CN 102678052A CN 2012101555874 A CN2012101555874 A CN 2012101555874A CN 201210155587 A CN201210155587 A CN 201210155587A CN 102678052 A CN102678052 A CN 102678052A
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Abstract
The invention discloses a disc cutter composite drill bit belonging to the field of rock blasting tools for drilling equipment for oil and gas, mine engineering and building foundation engineering construction, geology, hydrology and the like. The disc cutter composite drill bit comprises a drill bit body and a disc cutter cutting structure arranged on the drill bit body; the drill bit body is also provided with an impact cutting structure; and the impact cutting structure comprises a force transferring mechanism for transferring impact force and impact cutting teeth, wherein the impact cutting teeth are solidified on a punch arranged at the tail end of the force transferring mechanism, and the punch can slide or slidingly impact relative to the drill bit body in the impact force transferring direction. Compared with a drill bit (also named as wheel type drill bit) with the disc cutter cutting structure, the disc cutter composite drill bit is not only beneficial to the drilling of the cutting teeth of the drill bit to stratums and the increment of the rock blasting efficiency, but also beneficial to the retardance of the wear rate of the cutting teeth and particularly has remarkable technical advantages for higher-strength and stronger-abrasiveness stratums which are difficult to drill.
Description
Technical field
The invention belongs to drilling equipments such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology and use the rock crushing tool field.
Background technology
Drill bit be in the drilling engineering in order to fractured rock, form the rock crushing tool of pit shaft.Employed conventional bit mainly contains tricone bit, polycrystalline diamond compact bit (being the PDC drill bit) and percussion bit (also claiming to spin drill bit or bore bit) etc. in the drilling engineering now.
Tricone bit mainly breaks rock with the form of crushing (tooth is pressed into rock and causes catalase), suitable stratum wider range, but capacity usage ratio is not high, and efficiency of breaking rock is relatively low.Particularly when deep formation crept into, the cuttings hold-down effect in shaft bottom was fairly obvious under the high density drilling fluid action condition, and tooth is difficult to be pressed into the stratum and forms effectively fragmentation, and the drill bit rate of penetration is very limited.Bearing life is low to be one of the principal element in restriction tricone bit application life.Tricone bit needs big the pressure of the drill could guarantee higher efficiency of breaking rock, so the load amplitude of bearing is high, the operating principle that while gear wheel upper teeth replaces fractured rock must cause the axial or extensional vibration of drill bit, and bearing load by a relatively large margin fluctuates.Cone bit bearing is in the work under bad environment of down-hole in addition, and the life-span of bearing seal is difficult to ensure, so the bearing life of tricone bit is shorter relatively.
The PDC drill bit is that a kind of composite polycrystal-diamond (be the PDC tooth, also be called for short tooth) that utilizes is cut scraping of rock or the drill bit of the broken rock of shear action.Owing to possessing outstanding superiority aspect cutting element performance and the broken rock mode, thus the PDC drill bit at soft efficiency of breaking rock to medium ground apparently higher than tricone bit.Now, the PDC drill bit uses more and morely in drilling engineering, and ratio is increasing, but for hardness, stratum and serious inhomogeneous stratum that abrasiveness is high, the PDC drill bit still is difficult to adapt to.Existing P DC drill bit all belongs to fixed cutter drill bits (movement-less part on the drill bit).As far as the PDC drill bit, under the identical condition of drill speed, the pressure of the drill, the efficiency of breaking rock of drill bit depends primarily on the ability of PDC tooth wedging rock, and the degree of depth of PDC tooth wedging rock is big more, and the drill bit efficiency of breaking rock is just high more.Usually, when soft formation crept into, the depth of tooth penetration of PDC bit cutting tooth was bigger, and the efficiency of breaking rock of drill bit is higher; When hard formation crept into, the wedging ability of cutting teeth just died down, and depth of tooth penetration diminishes, and the drilling efficiency of drill bit just obviously reduces.The shortcoming that mainly contains of PDC drill bit is: the first, and when the intensity of rock or hardness were higher, the PDC tooth is difficult to the wedging rock to be cut to form effectively to scrape, and particularly after the PDC tooth had wearing and tearing, tooth was difficult to the wedging stratum more, and the rate of penetration of drill bit can sharply reduce.Second; The PDC tooth is rock cutting continuously; Because violent fricative heat can make tooth reach quite high temperature, when temperature delimited above one, the rate of wear of PDC tooth obviously rose; Thereby cause the generation of (when PDC tooth operating temperature was higher than a certain specified temp, the phenomenon that its abrasion resistance obviously descends was called the thermal wear phenomenon of PDC tooth) of thermal wear phenomenon.The 3rd; The rate of wear obvious difference of the PDC tooth on the different radial zones of PDC drill bit; Obviously faster than the tooth in heart portion zone, cutting teeth abrasion equilibrium property is poor, thereby has reduced the combination property of drill bit for the cutter-wear rate in general bit exterior zone (particularly outer 1/3 zone of drill bit radius).
Percussion bit is the fixed teeth rock crushing tool that cooperates down-the-hole air hammer (being the down-the-hole hammer) to use in the rotary percussion drilling.The structure of percussion bit is similar with the PDC drill bit, does not have moveable element on the drill bit, and fixed some can cover the cutting teeth that broken zone is treated in the shaft bottom on the bit body.Difference mainly is: the cutting element of PDC drill bit is mainly the PDC tooth, and the cutting element of percussion bit is mainly carbide alloy similar with the rock bit teeth patterning or the compound tooth of diamond.The crushing mechanism of the rock breaking mechanism of percussion bit and rock bit and the cutting scheme of PDC drill bit all have significant difference.Percussion bit relies on the instant impact of its tooth to realize the fragmentation to bottom rock.The upper end of percussion bit is connecting down-the-hole air hammer; Down-the-hole air hammer is when work; Its block stamp moves back and forth under the effect of circulation of fluid (drilling fluid or recyclegas); Clash into drill bit or bore bit repeatedly, thereby for the contacted drill teeth of bottom rock pulsatile impact load to be provided, rock takes place under the instant impact effect of tooth broken.Because the shock loading of drill bit depends on down-the-hole air hammer; So; (these characteristics and rock bit have remarkable difference need not apply very big the pressure of the drill in the percussion bit course of work; Rock bit must be depressed at wammel could obtain higher efficiency of breaking rock), only need drill bit to be pressed in the shaft bottom and get final product with very little the pressure of the drill.Generally, percussion bit can be obtained higher efficiency of breaking rock when the particularly harder brittle formation of brittle formation is crept into.In addition, at the bigger easy tiltedly layer of stratigraphic dip, adopt percussion bit to creep into and help reducing hole deviation trend.But because percussion bit is the fixed teeth drill bit; When a small amount of cutting teeth damages inefficacy; It is responsible for broken well bottom zone can't be broken; This will influence the efficiency of breaking rock and the drilling ability of whole drill bit, and the inefficacy meeting of a small amount of cutting teeth causes the infringement of bit body very soon, and then influences the application life of drill bit.
Southwest Petrol University proposes " a kind of wheel-type drill with the broken rock of cutting form " (number of patent application: 201010229375.7); The runner of this drill bit (is a dise knife; Claim flywheel knife again) have bigger deviation angle (scope of deviation angle is 20 °～90 °), big deviation angle makes the cutting teeth on the drill bit runner slowly replace fractured rock to cut or to scrape the butt formula.Flywheel knife deviation angle of the present invention is bigger, and during the drill bit rotary drilling, the wheel body speed ratio ratio of drill speed (the runner rotating speed with) is less, and the runner rotation slowly.The slow alternation of the cutting teeth of this drill bit, the drill bit initial failure that reduces or avoided fixed cutter drill bits to lose efficacy and bring because of the minority cutting teeth; Cutting teeth alternation wearing and tearing are even, and the ability to work of each cutting teeth can be fully used; The cutting teeth good cooling results is difficult for taking place thermal wear; The pressure of the drill required when drill bit creeps into is little, and the suffered load of bearing is little, and the load fluctuation amplitude is low, and bearing relatively rotates slowly, generates heat few, and the bearing working life-span of drill bit is long.This drill bit still mainly relies on the pressure of the drill to make cutting teeth wedging stratum; The degree of depth of the big more PDC tooth of the pressure of the drill wedging rock is big more, and the drill bit efficiency of breaking rock is just high more, but the increase of the pressure of the drill is limited; And increase the wearing and tearing that the pressure of the drill can aggravate PDC tooth and bearing, reduce the working life of drill bit.In the creeping into of hard formation, this drill bit is because the cutting teeth depth of tooth penetration is little, and the drilling efficiency of drill bit is not high.
Summary of the invention
The objective of the invention is to: a kind of dise knife composite drill bit is provided; On dise knife drill bit (or claiming wheel-type drill) basis, increase and impact cutting structure, make full use of the advantage of impact cutting rock mode, promote the wedging of bit cutting tooth rock; Improve efficiency of breaking rock; Slow down the rate of wear of cutting teeth, increase drilling life of bit, promote the service behaviour of drill bit at the more high bad ground of intensity.
The object of the invention realizes through following technical proposals:
A kind of dise knife composite drill bit (abbreviation composite drill bit); Comprise bit body and be arranged on the dise knife cutting structure on the bit body; Composite drill bit is provided with the impact cutting structure; Impacting cutting structure comprises the force transmission mechanism that transmits impact force and impacts cutting teeth, and impact cutting teeth and be cemented on the terminal drift of force transmission mechanism, said drift can be done slip with respect to bit body or slide and impact on the impact force direction of transfer.
Particularly; The dise knife composite drill bit comprises bit body, dise knife cutting structure, impacts cutting structure and hydraulic structure, also can comprise the beater mechanism that produces impact force, impacts cutting structure and comprises the force transmission mechanism that transmits impact force and impact cutting teeth; Force transmission mechanism comprises anvil body, dowel bar and the drift that connects successively; Form slip relatively between anvil body and the bit body, form relatively between dowel bar and the bit body and slide, or both allowed relative slip through the formation of swing slide block; Allow again to connect in relative rotation; Drift is connected the end of dowel bar, impacts cutting teeth and is cemented on the drift, and drift can be done slip with respect to bit body or slide and impact on the impact force direction of transfer.Said bit body is in order to adhere to, supporting or receiving drill bit dise knife cutting structure, to impact the matrix of cutting structure and beater mechanism, also is the matrix of nozzle being installed, being formed the drill bit runner.The upper end of bit body (also be the circulation of fluid arrival end, be called for short arrival end) is provided with in order to connect the screw thread of drill string.The top of bit body is tubular structure, and its tube wall had both had the function of transmitting the pressure of the drill, also plays effect pipe is interior, that the pipe external space is isolated, and its endoporus space is used for being provided with the elements such as anvil body of force transmission mechanism, and beater mechanism also can be located therein.The bottom of bit body is mainly the matrix of dise knife cutting structure, has offered hole or groove in order to hold dowel bar on it, has also offered the circulation of fluid spray-hole.Except the extending part of drift, impact cutting teeth and dowel bar, other part of impacting cutting structure all is positioned at the inner space of bit body, and installs from top to bottom according to the order of anvil body-dowel bar-drift.When composite drill bit comprised beater mechanism, top-down erection sequence was: beater mechanism-anvil body-dowel bar-drift, the impact force action that beater mechanism produces are passed to dowel bar, drift by the anvil body on the anvil body again.The upper surface of anvil body is the work plane of load of withstanding shocks, and the lower end is connected with dowel bar, can be to be slidingly connected, and also can be hinged (being that hinge connects), perhaps directly connection etc.When employing is slidingly connected, can slide relatively along contact surface between anvil body and the dowel bar; When adopting articulated manner to connect, can relatively rotate around hinged center between anvil body and the dowel bar.Drift is connected the other end of dowel bar with modes such as screw thread, interference fit, pin, welding, or constitutes an integral element with dowel bar.Drift, fixed impact cutting teeth and the dowel bar that matches on it constitute one and impact cutting unit, impact the quantity of cutting unit and can have only one, also several can be arranged.In same impact cutting unit, the quantity of dowel bar is one or more than one, and when the quantity of dowel bar during more than one, each dowel bar is connected in series each other, wherein has each other between the adjacent dowel bar of relative motion to be connected through the hinge.Between force transmission mechanism and the bit body and being connected or mounting means between each element of force transmission mechanism, make drift on the shock loading direction of transfer, do slip with respect to bit body.The dise knife cutting structure is arranged on the bit body bottom, includes the wheel palm and dise knife (also claiming runner), and the wheel palm is fixed with bit body to be one, and dise knife is installed on the axle journal of the wheel palm, forms with the wheel palm to be rotationally connected, and dise knife is provided with the dise knife cutting teeth.Hydraulic structure mainly comprises inside and outside runner of drilling well circulatory mediator, and the nozzle that is installed in the inner flow passage exit.On drill bit, also be provided with some auxiliary elements, be included as the location supporting positive cover that guarantees the correct operating position of anvil body and be provided with, and be elements such as the slide block realizing being provided with being connected between anvil body and the dowel bar, bearing pin, and potted component etc.
One of key of the present invention is: the dise knife cutting structure combines with the impact cutting structure and constitutes the combined cut structure; Impact cutting teeth on the drift constantly impacts the shaft bottom with certain frequency under impact force action, cooperate the common fragmentation of accomplishing bottom rock of dise knife cutting structure.About dise knife cutting structure and arrangement and the quantity of impact cutting structure on bit body, those skilled in the art combine prior art that numerous selections can be arranged under this specification teaches, and these technical schemes are all within protection domain of the present invention.
Two of key of the present invention is: drift can be done slip with respect to bit body or slide and impact on the impact force direction of transfer.Resultant effect is: the first, and the pressure of the drill that is delivered on the bit body by drill string can not be applied on the impact cutting teeth, thereby has avoided impacting cutting teeth in the quick wearing and tearing that continue under big the pressure of the drill pressure holding; The second, the pulsatile impact load of impacting cutting structure can not be delivered on bit body and even the drill string, the adverse effect of having avoided pulsatile impact load possibly cause the safety of bit body and even drill string; The 3rd, help the beater mechanism air defense to play the realization of function.About impacting the frame mode in order to realize that drift slides with respect to bit body on impact direction in the cutting structure; Those skilled in the art combine prior art that numerous selections can be arranged under this specification teaches, and these technical schemes are all within protection domain of the present invention.
Dise knife cutting teeth on the said dise knife cutting structure is a composite polycrystal-diamond; Also can be TSP, natural diamond and impregnated with diamond cutting teeth; The impact cutting teeth that impacts on the cutting structure is a hard-metal insert, or does the hard-metal insert that the surface is strengthened with diamond.Profile of tooth as the hard-metal insert that impacts cutting teeth can be hemi-spherical ended shape insert, blunt conical-ended shape insert, chisel teeth, wedge crested chisel insert and scoop chisel insert, also can be the tooth with other shape of good impact rock breaking efficiency.
On force transmission mechanism (mainly being dowel bar) and slide plane that bit body matches, sealing device is set; Leakage and the fluid of avoiding circulation of fluid in the leakage process to the erosion of dowel bar, bit body, simultaneously because circulation of fluid is higher than outside the bit body at the pressure of bit body inner chamber; The external and internal pressure difference acts on force transmission mechanism; Generation is with the thrust of drift to extrapolation, and this thrust can make the cutting teeth on the drift press rock surface, helps improving the impact efficiency of breaking rock of cutting teeth.
The impact cutting teeth of said impact cutting structure can be arranged within the radially coverage of said dise knife cutting structure dise knife cutting teeth; Also can independently arrange the radially coverage overlaid of dise knife cutting structure dise knife cutting teeth (not with), or part is independent arranges.
As optimal way, the impact cutting teeth of said impact cutting structure and said dise knife cutting structure dise knife cutting teeth arrange that in radially overlapping covering the impact cutting teeth that impacts cutting structure is arranged within the radial zone beyond the drill bit radius 1/3rd.
As optimal way, the impact cutting teeth of said impact cutting structure and said dise knife cutting structure dise knife cutting teeth arrange that in radially overlapping covering the impact cutting teeth that impacts cutting structure is arranged within the radial zone beyond the drill bit radius 1/2nd.
As optimal way, the impact cutting teeth of said impact cutting structure and said dise knife cutting structure dise knife cutting teeth arrange that in radially overlapping covering the impact cutting teeth that impacts cutting structure is arranged within the radial zone beyond the drill bit radius 2/3rds.
As optimal way, the impact cutting teeth of said impact cutting structure is arranged in drill bit radius 1/3rd with within the interior radial zone.
Also can be provided with anti-rotation structure on the said force transmission mechanism, rotate around the dowel bar axle in the course of the work to avoid drift.
Also can be provided with anti-drop structure on the said force transmission mechanism, under the extrapolability of drilling fluid, gravity etc. or pulling capacity effect, come off from drill bit to avoid drift and dowel bar.
As optimal way, the cutting teeth of said dise knife cutting structure adopts the PDC tooth, the carbide alloy tooth that the cutting teeth of said impact cutting structure adopts the carbide alloy tooth or strengthens with superhard materials such as diamonds.
As optimal way, the cutting teeth of said dise knife cutting structure adopts circular composite polycrystal-diamond, and the cutting teeth of said impact cutting structure adopts the hard-metal insert or the diamond composite hard alloy tooth of conisphere shape or wedge shape.
As optimal way, when said composite drill bit comprised beater mechanism, bit body adopted split-type structural, can beater mechanism and pairing bit body part thereof be separated from composite drill bit, constituted independent parts.This moment, bit body was formed by connecting impactor body that is provided with beater mechanism and the cutting structure body that is provided with dise knife cutting structure and impact cutting structure; Beater mechanism is installed in the hollow part of impactor body, and the impactor body is used to hold, install beater mechanism.At this moment, composite drill bit just be divided into two on the function with make relatively independent part, the i.e. rock crushing tool of the impactor on top and bottom.The function of impactor just provides pulsatile impact power, and the function of rock crushing tool is transmitted impact force exactly, and implements the direct fragmentation to rock with the dise knife cutting structure.Adopt split-type structural more to help the manufacturing and the use of composite drill bit, impactor parts and rock crushing tool parts can be made respectively, go into to fit together before well uses again.
For the dise knife composite drill bit that comprises beater mechanism, its course of work is:
The dise knife composite drill bit is connected the least significant end of drill string.Go into after the well, drill bit moves closer to, arrives the shaft bottom.(when circulation of fluid was drilling fluid, driving arrangement was a borehole pump to start the circulation of fluid driving arrangement; When circulation of fluid be gas or when being mainly gas, driving arrangement is a gas compressor), make circulation of fluid in the inside and outside circulation of drill string.On drill bit, apply the pressure of the drill, the beginning rotary drilling, the cutting teeth on the drill bit dise knife cutting structure promptly begins broken bottom rock.Meanwhile, because circulation of fluid has begun circulation, under the driving of drill string inner loop fluid; Beater mechanism is started working; Apply the pulsatile impact load of certain frequency scope continuously to the anvil body, shock loading is passed to dowel bar through the anvil body, is passed to drift again; Finally be applied to and impact on the cutting teeth, thereby realize impacting the fragmentation of cutting structure bottom rock.After circulation of fluid flows through beater mechanism, flow out from bit port or nozzle through inner flow passage again, accomplish the cooling cutting teeth, clean drill bit, bottom-hole cleaning and cutting carring function.Although the dise knife cutting structure carries out with the broken rock work of impacting cutting structure separately, rock breaking mechanism also has nothing in common with each other, and each other useful influencing each other can take place.Combined drill is the main cutting structure with the dise knife cutting structure usually, and impacting cutting structure is the assisted machining structure.Cutting teeth in the dise knife cutting structure is generally PDC tooth (or be main with the PDC tooth); So it (is wheel-type drill that the dise knife cutting structure on the composite drill bit just is equivalent to a common dise knife cutter drill bits; Or pan of a steelyard cutter drill bit, flywheel knife drill bit), the key of its efficiency of breaking rock is the wedging effect of PDC tooth to bottom rock.Increase the depth of tooth penetration of PDC tooth, can only increase the pressure of the drill usually, and the increase of the pressure of the drill is limited, and increase the wearing and tearing that the pressure of the drill can aggravate PDC tooth and bearing, reduce the working life of drill bit.The essence of technical scheme of the present invention is exactly on the dise knife cutter drill bits, to introduce to impact cutting structure, and this technical scheme can effectively be utilized the characteristics and the advantage of impact cutting rock mode, promotes the efficiency of breaking rock and the cutting teeth working life of dise knife cutting structure significantly.Impact cutting structure and rely on the pulsatile impact load fractured rock of impact cutting teeth the certain frequency of rock; Therefore very low to the requirement of work the pressure of the drill; Cutting teeth is that the hole is cheated or is pressed in the fragmentation that the respective regions in the shaft bottom forms one by one to the impact effect of bottom rock; These broken generations of cheating or being pressed into the hole have directly promoted the wedging of dise knife cutting structure respective regions PDC tooth to bottom rock, have alleviated the live load of these PDC teeth simultaneously.In other words; When on the cutting teeth of dise knife cutting structure has the scraggly shaft bottoms in many broken holes, creeping into; Its rate of penetration will be apparently higher than the rate of penetration at the bottom of the no broken mine pit, and the rate of wear of its cutting teeth is starkly lower than the rate of wear when at the bottom of the no broken mine pit, creeping into.
In the impact cutting structure of composite drill bit, impact each element (comprising anvil body, dowel bar, drift and cutting teeth etc.) that bears pulsatile impact load in the cutting structure and can on the shock loading direction of transfer, do slip or the impact of sliding with respect to bit body.Like this, in the normal drilling process of drill bit, impact cutting structure and do not bear the pressure of the drill, also the do not withstand shocks pulsatile impact load of cutting structure of dise knife cutting structure from drill string and bit body.These characteristics both can have been avoided damage or the adverse effect of pulsatile impact load to dise knife cutting structure cutting teeth, bearing, bit body and even upper drilling string, also can avoid impacting cutting teeth because of continuing to bear the quick wearing and tearing that big work the pressure of the drill causes.In addition, these characteristics are also beaten function for the air defense that realizes composite drill bit necessary condition are provided.Being lowered in the process of drill bit; Because the effect of gravity and circulation of fluid inside and outside differential pressure; Impacting anvil body, dowel bar, the drift in the cutting structure and impact cutting teeth can be together to lower slider one segment distance; The impact cutting teeth is protruded in outside the dise knife cutting structure cutting teeth envelope contour face, and impacting the residing position of cutting structure this moment is that the position is beaten in air defense, on this position; The air defense of beater mechanism sets meter can make the impact hammer in the beater mechanism stop the hammering to the anvil body, to realize the no-load protection of impact cutting structure.Move closer at drill bit, when arriving the shaft bottom, outstanding impact cutting teeth at first contacts the shaft bottom, further in place along with drill bit then, the said elements that impacts in the cutting structure is retracted to normal operation position gradually.When drill bit after the shaft bottom is fully in place, drill bit begins rotary drilling, impacts cutting structure and begins to carry out to break normally rock work with the dise knife cutting structure.When carrying drill bit on the needs when (as pulling out of hole or the continued access drill string),, opposite with going down process along with the rising gradually of bit location; Dise knife cutting structure on the drill bit at first leaves the shaft bottom, still keeps contacting with bottom rock and impact cutting teeth, simultaneously; The downward slippage of impacting in the cutting structure of the relative bit body of aforementioned other related elements is beaten the position until arriving air defense; After this impact the cutting teeth load that no longer withstands shocks, break away from the shaft bottom then, rise with other part of drill bit.
For the dise knife composite drill bit that does not comprise beater mechanism, the course of work that produces pulsatile impact load is no longer accomplished by composite drill bit, accomplishes and change by impactor.In addition, all the other courses of work are identical with the course of work of the dise knife composite drill bit that comprises beater mechanism.The dise knife composite drill bit that does not comprise beater mechanism is not the drill bit of a telotism, must with the use of just going into the well after the supporting installation of corresponding impactor.In fact the composite drill bit of this moment is exactly the rock crushing tool parts of split type dise knife composite drill bit.When concrete the use, generally should earlier supporting impactor and composite drill bit be linked together (impactor is connected on the composite drill bit), and then the impactor that combines, composite drill bit be connected the drill string end.After installing, the use of can going into the well.
Beneficial effect of the present invention:
(1) when composite drill bit in the shaft bottom during rotary drilling, in dise knife cutting teeth and the well bottom zone of impacting the overlapping covering of cutting teeth, owing to impact the continuous impact of cutting teeth to rock, the surface, shaft bottom has formed and has been pressed into hole or broken hole.Under the identical condition of cutting depth (depth of tooth penetration) or ablation volume (being cut the fragmented rock volume); Wedging power (perpendicular to the be pressed into power of rock surface), main cutting force (at cutting force cutting speed direction on) and the cutting power of PDC tooth when having formed the rock surface cutting that is pressed into hole or broken hole is starkly lower than the working angles under rock surface opposed flattened (the not having broken hole) condition; The difficulty of cutting teeth wedging rock obviously reduces, and broken rock energy consumption also obviously reduces.So, to compare with wheel-type drill, composite drill bit can reach higher efficiency of breaking rock on the stratum (stratum that hardness is higher) that cutting teeth is difficult to wedging when creeping into.
(2) as previously mentioned; Under the identical condition of cutting depth or ablation volume; The friction power loss of PDC tooth when the rock surface cutting that broken hole is arranged is starkly lower than the working angles under rock surface opposed flattened (the not having broken hole) condition, and the heat that produces owing to friction also obviously reduces.On the other hand, when the rock surface cutting that broken hole is arranged, frequent variations can take place in contact area between cutting teeth and the rock and contact condition, and the cooling effect of cutting teeth can improve.So; Compare with wheel-type drill; The cutter-wear rate of composite drill bit dise knife cutting structure is lower; Can reach higher working life, thereby when the bad grounds such as high abrasive, high rigidity and high inhomogeneity that wheel-type drill is difficult to adapt to used, composite drill bit can reach better drilling effect.
(3) force transmission mechanism in the composite drill bit can be done slip with respect to bit body on the shock loading direction of transfer; Resultant beneficial effect is: first; The pressure of the drill that is delivered on the bit body by drill string can not be applied on the impact cutting teeth, thereby has avoided impacting cutting teeth in the quick wearing and tearing that continue under big the pressure of the drill pressure holding; Second; The pulsatile impact load of impacting cutting structure can not be delivered on bit body and even the drill string; The do not withstand shocks pulsatile impact load of cutting structure of dise knife cutting structure, this can be avoided damage or the adverse effect of pulsatile impact load to dise knife cutting structure cutting teeth, bearing, bit body and even upper drilling string; The 3rd, help the beater mechanism air defense to play the realization of function.
(4) centre of dise knife cutter drill bits has an inner cone zone usually; Composite drill bit can be provided with the impact cutting structure in this zone; At the bottom of the tapered well of protuberance under the impact force action that impacts cutting teeth volumetric fracture takes place more easily; The catalase speed in centre, shaft bottom is significantly accelerated, thereby promotes the raising of drill bit efficiency of breaking rock.
(5) can cover all composite drill bits of (or near all) radial zone of shaft bottom for the dise knife cutting structure, when beater mechanism or impact cutting structure because a variety of causes causes losing efficacy or during inefficiency, the dise knife cutting structure still can work alone.These characteristics of composite drill bit are superior to conventional percussion bit.
Description of drawings
Fig. 1 is a structural representation of the present invention, and composite drill bit does not comprise beater mechanism among the figure, has 2 runners, and 2 covers impact cutting unit, the alternate layout of runner and drift.
Fig. 2 is that composite drill bit shown in Figure 1 is from the view (vertical view) of cutting structure end when tip side is seen.
Fig. 3 does the impact cutting structure cross-sectional schematic after part is dissectd to composite drill bit shown in Figure 1.
Fig. 4 is the decomposing schematic representation (for showing the relation of installation, bit body 1 having been carried out horizontal subdivision from the middle part) to composite drill bit shown in Figure 1.
Fig. 5 is the structural principle sketch map that is provided with anvil body supporting positive cover between anvil body of the present invention and the bit body, and supporting positive cover works to set upright the location to the anvil body.
Fig. 6 is that anvil body of the present invention is set upright positioning principle sketch map (anvil body 323 contacts with the endoporus hole wall of bit body 1, forms matched in clearance, realizes the location of setting upright of anvil body) when not having supporting positive cover.
Fig. 7 is the composite drill bit drape tooth figure radially when impacting cutting teeth and being arranged in zone beyond the drill bit radius 1/3rd.
Fig. 8 is the composite drill bit drape tooth figure radially when impacting cutting teeth and being arranged in zone beyond the drill bit radius 1/2nd.
Fig. 9 is the composite drill bit drape tooth figure radially when impacting cutting teeth and being arranged in drill bit radius 2/3rds with exterior domain.
Figure 10 is the composite drill bit drape tooth figure radially when impacting cutting teeth and being arranged in drill bit radius 1/3rd with inner region.
Figure 11 is the composite drill bit drape tooth figure radially when impacting cutting teeth and being arranged in except that bit central with whole radial extension the zone such as fraction such as grade, rule footpath.
Figure 12 is that composite drill bit of the present invention has 3 wheel discs and 1 cover impacts cutting unit, and the vertical view when impacting cutting unit and being arranged in drill bit heart portion.
Figure 13 is the force transmission mechanism principle schematic of structure shown in Figure 1, and in this force transmission mechanism, drift is fixedly connected with dowel bar, and dowel bar and anvil body form and be slidingly connected (sliding pair).
Figure 14 is the principle schematic of a kind of force transmission mechanism of the present invention; In this force transmission mechanism; Impact in the cutting unit 2 dowel bars are arranged; One of them dowel bar (one) is fixedly connected (or for integral structure) with drift, another dowel bar (two) is connected (formation revolute pair) through hinge with the anvil body, between 2 dowel bars also through hinge be connected (formation revolute pair).
Figure 15 is the principle schematic of a kind of force transmission mechanism of the present invention, and in this force transmission mechanism, drift is fixedly connected with dowel bar; Dowel bar and anvil body are connected through the hinge; Be provided with the swing slide block between dowel bar and the bit body, swing slide block and dowel bar are hinged, and swing slide block and bit body are slidingly connected; Be to have formed and both allow relative slip through the swing slide block between dowel bar and the bit body; Allow again to connect in relative rotation, dowel bar and drift be bit body slip relatively both, also can rotate around the center of rotation of swing slide block.
Figure 16 is provided with the swing slide block between dowel bar and the bit body of force transmission mechanism shown in Figure 15, and the swing slide block is hinged with dowel bar, the structural representation when swinging slide block and bit body and being slidingly connected.
Figure 17 is the principle schematic of a kind of force transmission mechanism of the present invention, and in this force transmission mechanism, drift is fixedly connected with dowel bar; Dowel bar and anvil body are connected through the hinge; Be provided with the swing slide block between dowel bar and the bit body, swing slide block and dowel bar are slidingly connected, and swing slide block and bit body are hinged; Dowel bar and drift be bit body slip relatively both, also can rotate around the center of rotation of swing slide block.
Figure 18 is the structural representation of a kind of force transmission mechanism of the present invention, and in this force transmission mechanism, drive link and drift are fixed, and the impact direction that impacts cutting structure is parallel to the drill axis direction.
Figure 19 is an impact cutting teeth of the present invention sketch map when adopting diamond to do the hard-metal insert of strengthening on the surface.
Figure 20 comprises beater mechanism, and the composite drill bit structural representation when adopting integral structure.
Figure 21 comprises beater mechanism, and adopts the composite drill bit structural representation of split-type structural.
Figure 22 is for preventing that drift and dowel bar from rotating, the structural concept sketch map when between dowel bar and bit body, adopting spline to be connected.
Figure 23 comes off the structural concept sketch map when on dowel bar and bit body, being provided with the slip-off preventing step for what prevent drift and dowel bar etc.
Figure 24 is that composite drill bit is in the structural representation of air defense when beating the position.
Wherein: 1, bit body, 12, bit body slip-off preventing step, 2, the dise knife cutting structure, 21, the dise knife cutting teeth, 22, runner; 3, impact cutting structure, 31, impact cutting teeth, 311, carbide alloy, 312, the diamond enhancement Layer, 32, force transmission mechanism; 321, drift, 322, dowel bar, 323, the anvil body, 324, supporting positive cover, 325, sealing ring; 328, swing slide block, 3221, dowel bar (), 3222, dowel bar (two), 3223, dowel bar slip-off preventing step, 33, beater mechanism; 331, block stamp, 41, runner, 42, nozzle, 5, the impactor parts; 51, impactor body, 52, the impactor block stamp, 6, the cutting structure parts, 61, the cutting structure body.
The specific embodiment
Following non-limiting examples is used to explain the present invention.
Embodiment 1:
Like Fig. 1 to Fig. 4, Fig. 7, Figure 13 and shown in Figure 19; A kind of dise knife composite drill bit; Comprise bit body 1, the hydraulic structure that bit body 1 is provided with dise knife cutting structure 2, impacts cutting structure 3 and be made up of runner 41 and nozzle 42, dise knife cutting structure 2 includes dise knife cutting teeth 21; Impacting cutting structure 3 comprises the force transmission mechanism 32 that transmits impact force and impacts cutting teeth 31; Force transmission mechanism 32 comprises drift 321, dowel bar 322 and anvil body 323, and impact cutting teeth 31 is cemented on the drift 321 of force transmission mechanism 32 ends, and drift 321 can be done slip with respect to bit body 1 on the impact force direction of transfer.Composite drill bit does not comprise beater mechanism, has 2 runners, and 2 covers impact cutting unit, runner 22 and drift 321 alternate layouts.Be provided with sealing device (like the sealing ring 325 between dowel bar among Fig. 3 322 and the bit body 1) between bit body 1 and the force transmission mechanism 32.Dise knife cutting teeth 21 can be composite polycrystal-diamond, TSP tooth, natural diamond tooth, impregnated with diamond tooth.The impact cutting teeth 31 that impacts on the cutting structure 3 is a hard-metal insert, or does the hard-metal insert that the surface is strengthened with diamond.Composite polycrystal-diamond, TSP tooth, natural diamond tooth and impregnated with diamond tooth all have fabulous abrasion resistance; Usually be applied on the stationary cutting structure drill bit; Wherein for TSP tooth, natural diamond tooth and impregnated with diamond tooth; Because the characteristics and the restriction of material structure own, its application conditions normally adopts high cloth tooth density to be arranged on the stationary cutting structure bit body.Because cloth tooth density is high, cutting teeth wedging depth of stratum is limited, and fixedly cutting teeth often is difficult to effectively scrape and cuts the broken rock in stratum, even creeps into the broken rock of the extremely low lapping mode of efficient, and therefore generally these three kinds of teeth effect of being applied to wheel-type drill is unsatisfactory.And the present invention combines dise knife cutting structure 2 with impacting cutting structure 3, under the percussion of impacting cutting teeth 31, makes the shaft bottom form rough broken hole; The wedging that can help dise knife cutting teeth 21; Simultaneously the quantity of the cutting teeth synchronization contact bottom rock on the dise knife cutting structure 2 is generally few, and the cutting teeth density of promptly participating in broken rock simultaneously is not high, and the pressure of the drill that single tooth is shared is bigger; Cutting teeth to the stratum to be pressed into power bigger; Be easy to the wedging stratum, therefore, these three kinds of teeth also can be obtained good effect among the present invention; Simultaneously; The cutting teeth that above-mentioned abrasion resistance is good is applied on the dise knife cutting structure 2 of composite drill bit; Rock breaking efficiency and drilling life of bit preferably can be obtained, the scope of application of drill bit can be widened again at bad grounds such as high abrasive, high rigidity and high inhomogeneities.Shown in figure 19, the impact cutting teeth 31 on the drift 321 adopts diamond to do the hard-metal insert that the surface is strengthened, and the abrasion resistance that diamond strengthens obviously improving cutting teeth is done on the surface of hard-metal insert.The profile of tooth of impacting cutting teeth 31 can be blunt conical-ended shape insert, chisel teeth, hemi-spherical ended shape insert, wedge crested chisel insert and scoop chisel insert, also can be the tooth with other shape of good impact rock breaking efficiency.The impact cutting teeth 31 that impacts cutting structure 3 can be arranged within the radially coverage of dise knife cutting teeth 21 of dise knife cutting structure 2, also can independently arrange the radially coverage overlaid of dise knife cutting structure cutting teeth (not with), or part is independent arranges.As preferably, impact cutting teeth 31 and arrange in radially overlapping covering with dise knife cutting teeth 21, the cutting teeth that impacts cutting structure 3 is arranged within the radial extension beyond the drill bit radius 1/3rd (as shown in Figure 7).Generally; The broken task amount in drill bit heart portion zone is less and be easy to fragmentation; And heart portion is relatively large with the broken task amount of exterior domain, and the cutting teeth wearing and tearing want fast than heart portion, therefore; Area arrangements impact cutting teeth helps the fragmentation of corresponding region rock beyond heart portion, and slows down the wearing and tearing of dise knife cutting teeth.Drift 321 on the impact cutting structure 3 is fixed each other with dowel bar 322 to be a fixing integral body, and dowel bar 322 and anvil body 323 are slidingly connected (mechanism principle figure is shown in figure 13).
Embodiment 2:
Present embodiment and embodiment 1 are basic identical; Its difference is: be provided with anvil body supporting positive cover 324 (shown in Figure 5) between anvil body 323 and the bit body 1; Or directly process the surface that forms matched in clearance with bit body 1 endoporus on the anvil body 323, realize the relative slip between anvil body and bit body and set upright location (as shown in Figure 6).
Embodiment 3:
Present embodiment and the foregoing description are basic identical; Its difference is: certain or each impact that dowel bar has two in the cutting unit; The characteristics of motion of two dowel bars has nothing in common with each other, and has relative motion each other, and one of them dowel bar (one) 3221 is fixedly connected with drift 321; Another dowel bar (two) 3222 is hinged with anvil body 323, is connected through the hinge between two dowel bars (shown in figure 14).Far away and its impact direction greatly the time, adopts two dowel bars that are hinged to be easier to realize the transformation of impact direction and the transmission of impact force with the drill axis angle from bit central when drift 321.
Embodiment 4:
Present embodiment and the foregoing description are basic identical, and its difference is: the impact cutting teeth 31 that impacts cutting structure 3 is arranged within the radial extension beyond the drill bit radius 1/2nd (as shown in Figure 8).
Embodiment 5:
Present embodiment and embodiment 4 are basic identical, and its difference is: the impact cutting teeth 31 that impacts cutting structure 3 is arranged within the radial extension beyond the drill bit radius 2/3rds (as shown in Figure 9).Generally; The live load (the broken rock amount of on average bearing that refers to cutting teeth) of (the particularly zone beyond the drill bit radius 2/3rds) cutting teeth is big more more outward on the drill bit radius region; The tooth that the wearing and tearing of cutting teeth or rate of decay are regional faster than heart portion more; On this zone, arrange and impact cutting teeth, can also reduce its rate of decay when this zone dise knife cutting teeth efficiency of breaking rock is improved, thereby prolong the application life of bit cutting tooth.
Embodiment 6:
Present embodiment and the foregoing description are basic identical, and its difference is: the impact cutting teeth 31 that impacts cutting structure 3 is arranged in drill bit radius 1/3rd with (like Figure 10 and shown in Figure 12) within the interior radial extension.The centre of drill bit has an inner cone zone usually; When in the big stratum of the high fragility of hardness, creeping into; Near the drill bit heart portion zone impact cutting teeth is set; Under the percussion of impacting cutting teeth, be easier to the brittle crush (being volumetric fracture) of heart portion rock, help improving the drill bit drilling efficiency.
Embodiment 7:
Present embodiment and the foregoing description are basic identical, and its difference is: the impact cutting teeth 31 that impacts cutting structure 3 is arranged in except that waiting in the whole radial extension the fraction zone (shown in figure 11) in bit central and rule footpath.In the bad ground high in intensity, that plasticity is big, all be furnished with the impact cutting teeth in the whole radial extension of drill bit, can in whole radial zone, strengthen the rock breaking capacity of drill bit, improve the efficiency of breaking rock of composite drill bit in this kind bad ground.
Embodiment 8:
Present embodiment and the foregoing description are basic identical; Its difference is: drift 321 is fixedly connected with dowel bar 322, and dowel bar 322 is connected with anvil body 323 hinges, is provided with swing slide block 328 between dowel bar 322 and the bit body 1; Swing slide block 328 is hinged with dowel bar 322; Swing slide block 328 is slidingly connected (like Figure 15 and shown in Figure 16) with bit body 1, has promptly formed and both allows relative slip through swinging 328 of cunnings between dowel bar 322 and the bit body 1, allows again to connect in relative rotation; Dowel bar 322 and drift 321 both bit body 1 slip relatively also can rotate around the center of rotation of swing slide block 328.When the impact direction of drift 321 and drill bit shaft when angle is big, the introducing of swing slide block 328 can make the transmission of impact force more smooth and easy.
Embodiment 9:
Present embodiment and embodiment 8 are basic identical; Its difference is: shown in figure 17; Swing slide block 328 is slidingly connected with dowel bar 322; Swing slide block 328 is hinged with bit body 1, and dowel bar 322 and drift 321 both bit body 1 slip relatively also can rotate around the center of rotation of swing slide block 328.The effect of present embodiment and embodiment 8 are basic identical.
Embodiment 10:
In the present embodiment, the impact direction of said impact cutting structure is parallel to the drill axis direction.Shown in figure 18, with this understanding, transmission mechanism 32 need not labyrinth, only needs dowel bar 322 fixed drifts 321 to get final product.Other technologies scheme those skilled in the art can be under feasible prerequisite independent assortment in the manual technical scheme or other embodiment.
Embodiment 11:
Present embodiment and the foregoing description are basic identical, and its difference is: composite drill bit comprises beater mechanism 33, and beater mechanism 33 is integral structure (shown in figure 20) with bit body.The impact force that beater mechanism 33 is produced during drill bit work acts on the anvil body 323 of force transmission mechanism 32 through the block stamp on the beater mechanism 33 331.Integral structure makes that the composite drill bit internal construction is compacter, reliability is higher.
Embodiment 12:
Present embodiment and embodiment 11 are basic identical; Its difference is: bit body 1 adopts split-type structural; Be formed by connecting impactor body that is provided with beater mechanism 51 and the cutting structure body 61 that is provided with dise knife cutting structure 2 and impact cutting structure 3; The hollow part that beater mechanism is installed in impactor body 51 forms impactor parts 5, and dise knife structure 2, impact cutting structure 3 and cutting structure body 61 constitute cutting structure parts 6 (shown in figure 21).The impact force that impactor parts 5 are produced during drill bit work acts on the anvil body 323 of force transmission mechanism through the block stamp on the beater mechanism 52.Adopt split-type structural to help the manufacturing and the use of composite drill bit, impactor parts and rock crushing tool parts can be made respectively, go into to fit together before well uses again.
Embodiment 13:
In the present embodiment, for preventing the rotation of drill bit when work dowel bar 322 and drift 321 grades, between drift 321 and the bit body 1 or (and) be provided with anti-rotation structure between dowel bar 322 and the bit body 1.Shown in figure 22, spline is set between dowel bar 322 and the bit body 1 connects, rotate around the dowel bar axle in the course of the work to avoid dowel bar 322 and drift 321 grades.
Embodiment 14:
In the present embodiment, for preventing coming off of dowel bar 322 and drift 321 grades, between drift 321 and the bit body 1 or (and) be provided with anti-drop structure between dowel bar 322 and the bit body 1.Shown in figure 23, on dowel bar 322 and bit body 1, be respectively arranged with slip-off preventing step 3223 and 12, come off from drill bit under the pulling capacity effect in order to avoid dowel bar 322 and drift 321 grades.
Embodiment 15:
In the present embodiment, for prevent that drill bit is lowered in the process or on block stamp is to the hammering of anvil body 323 when carrying drill bit, composite drill bit is provided with air defense knotting structure.Shown in figure 24; When drill bit does not contact the shaft bottom; Because the effect of gravity and circulation of fluid inside and outside differential pressure; Impact anvil body 323, dowel bar 322, the drift 321 in the cutting structure 3 and impact cutting teeth 31 and can impact cutting teeth 31 protruded in outside the envelope contour face of dise knife cutting structure cutting teeth 21, impact cutting structure 3 residing positions this moment and beat the position for air defense together to lower slider one segment distance.On this position, the air defense of beater mechanism sets meter can make the jump bit in the beater mechanism stop the hammering to the anvil body, to realize the no-load protection of impact cutting structure.。
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. dise knife composite drill bit; Comprise bit body (1) and be arranged on the dise knife cutting structure (2) on the bit body (1); It is characterized in that: said bit body (1) also is provided with and impacts cutting structure (3); Impacting cutting structure (3) comprises the force transmission mechanism (32) that transmits impact force and impacts cutting teeth (31); Impact cutting teeth (31) and be cemented on the terminal drift (321) of force transmission mechanism (32), said drift (321) can be done slip with respect to bit body (1) or slide and impact on the impact force direction of transfer.
2. a kind of dise knife composite drill bit according to claim 1 is characterized in that: said bit body (1) also is provided with the beater mechanism (33) that produces impact force and transmitted impact force by said force transmission mechanism (32).
3. a kind of dise knife composite drill bit according to claim 2; It is characterized in that: said bit body (1) adopts split-type structural; Be formed by connecting impactor body (51) that is provided with said beater mechanism and the cutting structure body (61) that is provided with said dise knife cutting structure (2) and impacts cutting structure (3), beater mechanism is installed in the hollow part of impactor body (51).
4. according to claim 1 and 2 or 3 described a kind of dise knife composite drill bits, it is characterized in that: be furnished with said impact cutting teeth (31) in the radial zone beyond the drill bit radius 1/3rd.
5. according to claim 1 and 2 or 3 described a kind of dise knife composite drill bits, it is characterized in that: be furnished with said impact cutting teeth (31) in the radial zone beyond the drill bit radius 1/2nd.
6. according to claim 1 and 2 or 3 described a kind of dise knife composite drill bits, it is characterized in that: be furnished with said impact cutting teeth (31) in the radial zone beyond the drill bit radius 2/3rds.
7. according to claim 1 and 2 or 3 described a kind of dise knife composite drill bits, it is characterized in that: drill bit radius 1/3rd is to be furnished with said impact cutting teeth (31) in the interior radial zone.
8. according to claim 1 and 2 or 3 described a kind of dise knife composite drill bits; It is characterized in that: said force transmission mechanism (32) comprises anvil body (323), dowel bar (322) and the drift (321) that connects successively; Form relatively between anvil body (323) and the bit body (1) and slide; Form relatively between dowel bar (322) and the bit body (1) and slide, or both allowed relative slip, allow again to connect in relative rotation through swing slide block (328) formation; Said drift (321) is connected the end of dowel bar (322), or constitutes an integral element with dowel bar (322).
9. a kind of dise knife composite drill bit according to claim 8; It is characterized in that: in same impact cutting unit; The quantity of dowel bar is one or more than one; When the quantity of dowel bar during more than one, each dowel bar is connected in series each other, wherein has each other between the adjacent dowel bar of relative motion to be connected through the hinge.
10. according to claim 1 or 2 or 3 described a kind of dise knife composite drill bits; It is characterized in that: the dise knife cutting teeth (21) on the said dise knife cutting structure (2) is a composite polycrystal-diamond; Also can be TSP, natural diamond and impregnated with diamond cutting teeth; The impact cutting teeth (31) that impacts on the cutting structure (3) is a hard-metal insert, or does the hard-metal insert that the surface is strengthened with diamond.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101555874A CN102678052A (en) | 2012-05-18 | 2012-05-18 | Disc cutter composite drill bit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101555874A CN102678052A (en) | 2012-05-18 | 2012-05-18 | Disc cutter composite drill bit |
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| CN102678052A true CN102678052A (en) | 2012-09-19 |
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| CN2012101555874A Pending CN102678052A (en) | 2012-05-18 | 2012-05-18 | Disc cutter composite drill bit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089154A (en) * | 2013-02-28 | 2013-05-08 | 西南石油大学 | Composite drill bit |
| WO2013170788A1 (en) * | 2012-05-18 | 2013-11-21 | 西南石油大学 | Combination scraping and impacting drill bit |
| CN107529581A (en) * | 2017-09-06 | 2018-01-02 | 中国石油大学(华东) | The wear-resistant drag reduction drill bit of vibration damping |
| CN108561072A (en) * | 2018-05-25 | 2018-09-21 | 邵金安 | Wheeled roll off band percussion drilling method, drilling apparatus, drilling system and drilling machine |
| CN109025831A (en) * | 2018-09-11 | 2018-12-18 | 中国石油大学(北京) | Hybrid power PDC drill bit based on fluidics |
| CN109779533A (en) * | 2019-03-29 | 2019-05-21 | 莱州市原野科技有限公司 | PDC drill bit |
| CN111411897A (en) * | 2020-05-28 | 2020-07-14 | 西南石油大学 | Punching PDC drill bit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63167889A (en) * | 1986-12-27 | 1988-07-11 | 株式会社 利根ボ−リング | Multi-air hammer device |
| CN1487168A (en) * | 2002-07-10 | 2004-04-07 | 林秉德 | Drilling bit percussion apparatus for drill |
| CN2685530Y (en) * | 2004-03-09 | 2005-03-16 | 伍利钱 | Drill bits for enlarging the borehole |
| US20070181340A1 (en) * | 2001-06-05 | 2007-08-09 | Andergauge Limited | Drilling apparatus with percussive action cutter |
| CN100422502C (en) * | 2003-06-12 | 2008-10-01 | 国际壳牌研究有限公司 | Percussive drill bit |
| CN101892810A (en) * | 2010-07-16 | 2010-11-24 | 西南石油大学 | Combined drill breaking rocks by cutting method |
| CN102392605A (en) * | 2011-11-30 | 2012-03-28 | 四川深远石油钻井工具有限公司 | Compound bit formed by PDC (polycrystalline diamond compact) bits and rotary cutting bit |
| WO2012039630A1 (en) * | 2010-09-21 | 2012-03-29 | Flexidrill Limited | Hybrid drill bit |
| CN202659148U (en) * | 2012-05-18 | 2013-01-09 | 西南石油大学 | Disc-cutter compound drill bit |
-
2012
- 2012-05-18 CN CN2012101555874A patent/CN102678052A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63167889A (en) * | 1986-12-27 | 1988-07-11 | 株式会社 利根ボ−リング | Multi-air hammer device |
| US20070181340A1 (en) * | 2001-06-05 | 2007-08-09 | Andergauge Limited | Drilling apparatus with percussive action cutter |
| CN1487168A (en) * | 2002-07-10 | 2004-04-07 | 林秉德 | Drilling bit percussion apparatus for drill |
| CN100422502C (en) * | 2003-06-12 | 2008-10-01 | 国际壳牌研究有限公司 | Percussive drill bit |
| CN2685530Y (en) * | 2004-03-09 | 2005-03-16 | 伍利钱 | Drill bits for enlarging the borehole |
| CN101892810A (en) * | 2010-07-16 | 2010-11-24 | 西南石油大学 | Combined drill breaking rocks by cutting method |
| WO2012039630A1 (en) * | 2010-09-21 | 2012-03-29 | Flexidrill Limited | Hybrid drill bit |
| CN102392605A (en) * | 2011-11-30 | 2012-03-28 | 四川深远石油钻井工具有限公司 | Compound bit formed by PDC (polycrystalline diamond compact) bits and rotary cutting bit |
| CN202659148U (en) * | 2012-05-18 | 2013-01-09 | 西南石油大学 | Disc-cutter compound drill bit |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170788A1 (en) * | 2012-05-18 | 2013-11-21 | 西南石油大学 | Combination scraping and impacting drill bit |
| CN103089154A (en) * | 2013-02-28 | 2013-05-08 | 西南石油大学 | Composite drill bit |
| CN103089154B (en) * | 2013-02-28 | 2015-07-08 | 西南石油大学 | Composite drill bit |
| CN107529581A (en) * | 2017-09-06 | 2018-01-02 | 中国石油大学(华东) | The wear-resistant drag reduction drill bit of vibration damping |
| CN108561072A (en) * | 2018-05-25 | 2018-09-21 | 邵金安 | Wheeled roll off band percussion drilling method, drilling apparatus, drilling system and drilling machine |
| CN109025831A (en) * | 2018-09-11 | 2018-12-18 | 中国石油大学(北京) | Hybrid power PDC drill bit based on fluidics |
| CN109025831B (en) * | 2018-09-11 | 2020-03-13 | 中国石油大学(北京) | Hybrid PDC drill bit based on jet technology |
| CN109779533A (en) * | 2019-03-29 | 2019-05-21 | 莱州市原野科技有限公司 | PDC drill bit |
| CN111411897A (en) * | 2020-05-28 | 2020-07-14 | 西南石油大学 | Punching PDC drill bit |
| CN111411897B (en) * | 2020-05-28 | 2023-07-14 | 西南石油大学 | Punching PDC drill bit |
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