CN105874144A - No-waterway or single waterway drill bits and systems and methods for using same - Google Patents
No-waterway or single waterway drill bits and systems and methods for using same Download PDFInfo
- Publication number
- CN105874144A CN105874144A CN201480071762.9A CN201480071762A CN105874144A CN 105874144 A CN105874144 A CN 105874144A CN 201480071762 A CN201480071762 A CN 201480071762A CN 105874144 A CN105874144 A CN 105874144A
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- Prior art keywords
- drill bit
- annular crown
- crown
- external channel
- contemplated
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Links
- 238000000034 method Methods 0.000 title description 6
- 238000005553 drilling Methods 0.000 claims abstract description 33
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims description 34
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 14
- 230000005641 tunneling Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000012530 fluid Substances 0.000 abstract description 11
- 239000007788 liquid Substances 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 11
- 229910003460 diamond Inorganic materials 0.000 description 9
- 239000010432 diamond Substances 0.000 description 9
- 230000009977 dual effect Effects 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/02—Core bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/605—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a core-bit
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
Abstract
A drill bit for forming a hole in a formation. The drill bit has a shank and an annular crown that cooperate to define an interior space that receives water or other drilling fluid. The annular crown defines inner channels spaced circumferentially about an inner surface of the crown and outer channels spaced circumferentially about an outer surface of the crown. The annular crown can completely circumferentially enclose the interior space of the drill bit, or the annular crown can be provided with a single waterway extending between the inner and outer surfaces of the crown.
Description
The cross reference of related application
Patent application claims is filed in the excellent of U.S. Provisional Patent Application No.61/921,847 on December 30th, 2013
First weighing, the entire disclosure of which is incorporated by reference herein.
Technical field
The present invention relates to the drill bit for forming hole in the earth formation, and more particularly to for being formed in the earth formation
The annular bit in hole.
Background technology
Existing drill bit is generally of central row ditch and a series of offer fluid between drill bit side and central row ditch
The passage of connection or slit.These passages and/or slit can reduce the cooling at bit face and flush efficiency.Passage and/or
If the crown that slit also limits the height of drill bit crown-have passage and/or slit is too high, crown will be sent out during holing
Raw fault.Therefore, the life-span of existing drill bit is shortened in the existence of passage and/or slit effectively, thus increases the one-tenth of drill produced
This.
Many boring areas, such as South America and Australia, there is limited water source.In these regions, use conventional bit
Carry out drilling operation and there may be difficulty, because this needs a large amount of water.Even if in the area with bigger water source, it is also desirable to fortune water
Website of holing is delivered in water transport by truck, thus increases the cost of drilling operation.
Therefore, exist in the related art for higher than existing drill bit intensity, wash away drill bit more preferable with cooling effect
Needs.There is also the needs for the drill bit more less than water needed for conventional bit (or other bore liquid) in the related art, from
And reduce the cost of drilling operation.
Summary of the invention
This document describes the drill bit for forming hole in the earth formation.Drill bit has longitudinal axis, handle and annular crown.Annular
Crown has cutting face, inner surface and outer surface.Annular crown and handle coordinate to limit the inner space around longitudinal axis.
Inner space can be configured to receive water or other brill liquid during drill bit uses.
In one aspect, can to limit multiple inner surface around annular crown circumferentially spaced and away from longitudinal direction for annular crown
The inner passage that axis extends radially outwardly.It is circumferentially spaced that annular crown also can limit multiple outer surface around annular crown
And the external channel extended internally radially toward the longitudinal axis.Annular crown can the most circumferentially surround inner space.In example
Property aspect, annular crown does not have the gutter that radially extends between outer surface and the inner space of annular crown.Also describe
Drill bit is used to form the system in hole in the earth formation.
Other advantages of the present invention will be partly articulated below, and part will be obvious from the description, or
Can be known by the practice of the present invention.By the key element particularly pointed out in the following claims and combination, can realize and
Obtain advantages of the present invention.Should be appreciated that above-mentioned general description and described in detail below be only exemplary and explanat, and not
It is to such as being limited by the claimed present invention.
Accompanying drawing explanation
These and other features of the preferred embodiments of the present invention will become more to show in detailed description referring to the drawings
And be clear to, wherein:
Figure 1A is the perspective view of the exemplary drill bit as disclosed herein without gutter or recess.Figure 1B is Figure 1A
The top view of drill bit.
Fig. 2 A is the perspective view of the exemplary drill bit as disclosed herein with single gutter.Fig. 2 B is the brill of Fig. 2 A
The top view of head.
Fig. 3 is the perspective view of the exemplary drill bit as disclosed herein with single gutter.
Fig. 4 is the perspective view of the exemplary drill bit as disclosed herein with single gutter, shows have in figure
The convex center part of the drill bit crown of corresponding interior section and exterior section, this interior section and exterior section adjoin respectively
The inner surface reduced relative to convex center part and outer surface.
Fig. 5 is the perspective view of the exemplary drill bit as disclosed herein with single gutter, shows have in figure
The reduction core of the drill bit crown of corresponding interior section and exterior section, this interior section and exterior section adjoin respectively
Relative to reducing the protruding inner surface of core and outer surface.
Fig. 6 shows do not had the exemplary drill bit of gutter or recess before drilling operation as disclosed herein
Image afterwards.
Fig. 7 is to have arbitrarily showing of single external channel, single inner passage and single gutter as disclosed herein
The perspective view of example drill bit.
Fig. 8 is the perspective view of the drill bit of Fig. 7.
Fig. 9 shows the exemplary hole-drilling system including drill bit as disclosed herein.
Detailed description of the invention
Can more hold by referring to the explanation of described further below, example, drawings and claims and above and below thereof
Change places and understand the present invention.But, before disclosing and describing apparatus of the present invention, system and/or method, it will be appreciated that unless another
Indicate, the invention is not limited in disclosed concrete device, system and/or method, because this type of concrete device, system
And/or method is natural it may happen that change.It should also be recognized that term used herein is merely to describe particular aspects,
And be not intended to limit.
The following description of the present invention is provided as realizing the teachings of the present invention with the most preferred embodiment of prior known.To this end,
Those skilled in the relevant art will recognize and appreciate that, can make many changes in the various aspects of invention described herein, with
Time remain to obtain beneficial effects of the present invention.It is also obvious that can be unfavorable by some features of the selection present invention
Some required beneficial effects of the present invention are obtained by other features.Therefore, those skilled in the art it will be recognized that to this
Many amendments and adjustment that invention is made are possible, and the most desired, and constitute the present invention's
A part.Therefore, below describe be provided as the present invention principle exemplary illustration and and the unrestricted present invention.
As used in text, unless the context clearly dictates otherwise, " ", " a kind of " and " described " of singulative
Including plural references.It is therefoie, for example, mention that " passage " can include two or more this type of passage, unless the context otherwise
Instruction.
Scope can be expressed as starting from " about " a certain particular value and/or terminating in " about " another particular value in this article.Work as table
When reaching this type of scope, on the other hand include from a particular value and/or to another particular value.Similarly, when using antecedent
When being " about " approximation by numerical expression, it will be appreciated that this occurrence also constitutes another aspect.Should also be understood that each model
The end value enclosed is relative to another end value, for being still not dependent on another end value, the most meaningful.
As used herein, term " optional " or " optionally " refer to the event described subsequently or situation it may happen that or can
Can not occur, and described description includes described event or the example of situation wherein occurring and described event or feelings the most not occurring
The example of condition.
Word "or" means any one member in particular list as used herein, and also includes this list member
Any combination.
With reference to Figure 1A-3, described herein is the drill bit 10 for forming hole in the earth formation.Drill bit 10 has longitudinal axis
Line LA.At exemplary aspect, drill bit 10 can include handle 20 and annular crown 30.It is contemplated that brill disclosed herein
Head can increase the intensity of drill bit compared with conventional bit.It can furthermore be envisaged that, the intensity of the increase of drill bit can allow to manufacture
The higher drill bit of drill bit manufactured than usual manner, thus extend the life-span of drill bit.This can be greatly reduced and drill produced then
Relevant cost (produce with conventional bit and compare).It is also contemplated that drill bit disclosed herein is included in outside drill bit
The slit extended between the central row ditch (inner space) of surface and drill bit or window, can provide improvement relative to conventional bit
Wash away and cool down.It is, therefore, contemplated that drill bit disclosed herein more effectively works than conventional bit.
More particularly, it is contemplated that during bit operation disclosed herein, essentially all water (or its
He bores liquid) all can contact the surface of drill bit.It can furthermore be envisaged that, in conventional bit, the abrasion of diamond is derived from formation rock
The height that stone causes rubs and heat.It can furthermore be envisaged that, landwaste is washed away more by the external diameter from the end face of drill bit to drill bit
Hurry up, then the stratum run into is ground and/or cuts the fewest again, thus extends production and the working durability of drill bit.Can also set
Thinking, this kind of improvement in washing away and cooling down can reduce the grinding of matrix, and this can support gold by increasing on bit face
The matrix afterbody of hard rock expands diamond and exposes.It is also contemplated that by the diamond exposed and drilled ground
Layer forms more secondary fragmentation and causes the bigger displacement in stratum, so that boring performance boost.
It can furthermore be envisaged that, drill bit disclosed herein is easily manufactured than conventional bit.It is contemplated that
The method manufacturing drill bit disclosed herein can use the internal circulating load of colding pressing of minimizing, end face gutter and/or the layout of window and/or
End face gutter and/or the manual setting of window.
It is also contemplated that the efficiency washed away and cool down that drill bit disclosed herein provides can reduce drilling operation institute
The water yield needed.In illustrative aspects, it is contemplated that drill bit disclosed herein can be preferably suited for the ground that water source is limited
District, such as South America and Australia.
In one aspect, annular crown 30 can have adjacent outer peripheral surface 34 and the cutting face 32 on inner circumferential surface 35.
It is contemplated that annular crown 30 and handle 20 can coordinate to limit the inner space 25 around longitudinal axes L A.The most permissible
It is contemplated that inner space 25 can be configured to receive water or other brill liquid during using drill bit 10.In one aspect,
Water or other brill liquid can be supplied to inner space 25 at the desired pressure.
It yet still another aspect, annular crown 30 can the most circumferentially surround inner space 25.Optionally, in illustrative aspects,
As shown in figs. 1 and 3, annular crown 30 not included in the annular outer surface 34 of crown and inner surface 35 (and inner space 25) it
Between the gutter that radially extends.
But, at other optional aspects (as discussed further below), it is contemplated that annular crown 30 can include
The single gutter extended from the outer surface of the inner surface of annular crown to annular crown, thus at the outwardly and inwardly sky of drill bit
Between connection is provided between 25.In these areas, it is contemplated that single gutter is optionally the cutting from annular crown
Face is along at least some of recess extended towards handle of the axial length of annular crown.It is optionally possible to it is contemplated that this is recessed
Mouth can extend, until arriving at handle along the whole axial length of annular crown.When annular crown 30 includes single gutter, can
With it is contemplated that single gutter may be buffered in the pressure spike run at cutting face, and needed for reducing at cutting face
Big pressure.It can furthermore be envisaged that, can according to specific boring application needed for pressure and/or rate selectivity adjust single
The size in gutter.In use, it is contemplated that there is single gutter as disclosed herein (such as, single recessed
Mouthful) drill bit be more easily controlled than the conventional bit with multiple gutter in operation.It can furthermore be envisaged that, use list
Individual gutter (such as, single recess) can ensure that drill bit than have that the conventional bit intensity in multiple gutter is higher.Specifically,
It is contemplated that by only using single gutter, the possibility quilt of the leverage generally occurred in position, gutter
It is greatly reduced.And conventional bit uses the multiple gutters relative to the central point of drill bit balance, it can furthermore be envisaged that, make
The most unexpected beneficial outcomes is obtained with single gutter.It is also contemplated that it is the most single
Gutter can be used as pressure release mechanism and cools down for drill bit or the fluid stream very little or none shadow of impact of neighbouring drill bit
Ring.These are different with the conventional bit using multiple gutters to be cooled down by drill bit, and promote the more effective stream of neighbouring drill bit
Body stream.
At extra aspect, the inner surface of annular crown 30 can limit at least one and extend radially outwards from longitudinal axes L A
Inner passage 36.At exemplary aspect, it is contemplated that this at least one inner passage 36 can include multiple around ring
The inner surface of shape crown inner passage 36 that is circumferentially spaced and that extend radially outwardly away from longitudinal axes L A.Optionally, one
The most exemplary aspect, multiple inner passages 36 substantially equally can be spaced around the inner surface circumference of annular crown 30.One
Individual aspect, it is contemplated that multiple inner passages 36 are optionally roughly equal size.In other respects, Ke Yishe
Thinking, at least one in inner passage can have the size different from least one other inner passage.As used herein,
" size " of inner passage 36 typically refers to passage such as 2 dimensional region measured in one plane, and this plane is approximately perpendicular to
The longitudinal axis of drill bit 10.
In another aspect, it is contemplated that, in the cross section of longitudinal axes L A, the surface district of multiple inner passages 36
Territory can be between the scope of about 10% to about 80% for the percentage in the region of inner peripheral surface 35.Optionally, in multiple
The region, surface of portion's passage 36 for the region of inner peripheral surface 35 percentage can between about 25% to about 65%, about
Between 45% to about 60% or in the range of about 55%.
It yet still another aspect, the outer surface of annular crown 30 can limit at least one and extend radially inwardly towards longitudinal axes L A
External channel 38.At exemplary aspect, it is contemplated that this at least one external channel 38 can include multiple around ring
The outer surface of shape crown external channel 38 that is circumferentially spaced and that extend radially inwardly towards longitudinal axes L A.Exemplary at other
Aspect, it is contemplated that annular crown 30 can have the external diameter of the external diameter more than handle 20 so that annular crown is relative to handle
Highlight radially outward.Optionally, at the aspect that some are exemplary, multiple external channels 38 can be around the appearance of annular crown 30
Face 34 circumference is substantially equally spaced.In one aspect, it is contemplated that multiple external channels 38 are optionally substantially phase
Deng size.In other respects, it is contemplated that at least one in external channel can have with at least one outside other
The size that passage is different.As used herein, " size " of external channel 38 typically refers to passage as measured in one plane
2 dimensional region, this plane is approximately perpendicular to the longitudinal axis of drill bit 10.
In one aspect, annular crown can have the radial thickness between inner surface and outer surface, this radial thickness
Corresponding to the difference between annular crown external diameter and internal diameter.In this aspect, it is contemplated that each in multiple inner passages
Inner passage can have the radial dimension of the radial thickness being less than annular crown and (correspond roughly to deep relative to the radial direction of inner surface
Degree).It can furthermore be envisaged that, each external channel in multiple external channels can have the radial thickness less than annular crown
Radial dimension (corresponding roughly to the radial depth relative to outer surface).At exemplary aspect, it is contemplated that annular
Ratio between radial thickness and the radial dimension of multiple inner passage of crown can in the range of about 1.25:1 to about 15:1,
It is highly preferred that can be in the range of about 1.5:1 to about 3.5:1.At exemplary aspect, it is contemplated that annular crown
Ratio between the radial dimension of radial thickness and multiple external channel can be in the range of about 1.25:1 to about 15:1, more preferably
Ground, can be in the range of about 1.5:1 to about 3.5:1.In extra illustrative aspects, it is contemplated that multiple inner passages
Radial dimension can be more than the radial dimension of multiple external channels.At various exemplary unrestriced aspects, it is contemplated that
The radial dimension of inner passage and external channel can be in the range of about 0.050 inch to about 0.30 inch, it is highly preferred that can be
In the range of about 0.090 inch to about 0.250 inch.
In one aspect, the number of inner passage can be identical with the number of external channel.In another aspect, it is contemplated that
It is that the number of inner passage can be more than the number of external channel.It yet still another aspect, it is contemplated that the number of inner passage
It is smaller than the number of external channel.
At exemplary aspect, it is contemplated that the internal diameter of annular crown can be at the model of about 0.9 inch to about 8 inch
In enclosing, this internal diameter corresponds roughly to the relative second point on first inner surface extending to crown from the inner surface of crown
The distance of line, this line is by the central point of the crown overlapping with longitudinal axes L A.For having generally circular cross-section
Crown, this internal diameter may correspond to about 2.8 inches to the interior girth in about 25.1 inch range.In these areas, it can be envisaged that
, inner passage can be provided along interior girth every 1 to 2.5 inch.However, it is contemplated that can use have bigger
Or less internal diameter and the annular crown of interior girth.In some illustrative aspects, it is contemplated that the number of inner passage can
In the range of 3 to 16 inner passages.However, it is contemplated that some example annular crowns can have most about 40
Individual inner passage.At the aspect that some are exemplary, it is contemplated that the internal diameter of annular crown can change around inner surface.?
Extra illustrative aspects, it is contemplated that annular crown can have non-circular profile, takes turns such as, but not limited to ellipse
Wide.In these areas, it is contemplated that the interior girth of annular crown is when it is entirely around the longitudinal axes L A extension of crown
May correspond to total accurate dimension that the inner surface of annular crown is limited.
Optionally, as illustrated in figures 1 a-3, it is contemplated that each external channel in multiple external channels can be circumferential
It is positioned between the continuous inner passage of multiple inner passage.It can furthermore be envisaged that, annular crown optionally has greatly
Cause as snakelike radial contour.In terms of exemplary optional, it is contemplated that each external channel can be along a line and phase
Answering inner passage substantially aligned, this line is prolonged by longitudinal axes L A (LA perpendicularly to the longitudinal axis) of the diameter of transannular shape crown
Stretch.In these areas, it can furthermore be envisaged that, each inner passage can be the most right with respective external passage along a line
Together, this line is extended by longitudinal axes L A (LA perpendicularly to the longitudinal axis) of the diameter of transannular shape crown.
An optional illustrative aspects, as shown in Figure 4, it is contemplated that at least one external channel can be substantially
Overlapping with at least one inner passage so that the line radially extended from longitudinal axes L A passes inner passage and external channel two
Person.In this aspect, it is contemplated that at least one external channel of crown optionally includes single external channel.Additionally
It is contemplated that at least one inner passage of crown optionally includes single inner passage.
Each passage 36,38 in other aspect, multiple inner passages and multiple external channel can have width.Appoint
Selection of land, in these areas, it is contemplated that each passage 36,38 in multiple inner passages and multiple external channel can have
There is variable-width.Such as, the width of each external channel 38 optionally from the outer surface of tunneling boring crown towards longitudinal axis
Reduce when moving radially inward.It is, therefore, contemplated that each passage 38 in multiple passages moves towards longitudinal axes L A
Can be inwardly tapered time dynamic.In other illustrative aspects, it is contemplated that inner passage and external channel can be substantially U
Type passage.
At exemplary aspect, it is contemplated that annular crown 30 can have multiple circumferentially spaced exterior section 40,
This exterior section limits the outer surface (and external diameter) of annular crown.In these areas, it is contemplated that corresponding external channel
Between the 38 adjacent external parts 40 that can be positioned in multiple exterior section.At the aspect that other are exemplary, it is contemplated that
Annular crown 30 can have multiple circumferentially spaced interior section 42, and this interior section limits the inner surface of annular crown (with interior
Footpath).In these areas, it is contemplated that corresponding inner passage 36 can be positioned in the adjacent inner of multiple interior section
Between part 42.
Optionally, in some illustrative aspects, it is contemplated that it is the most flat that the outer surface of handle 20 can limit at least one
Row is in the groove (or groove) of the longitudinal axes L A extension of drill bit 10.In these areas, in this at least one groove of the outer surface of handle
Each groove optionally corresponding to from the outer surface of handle 20 towards the circular groove that extends of the inner surface radial direction of handle ground.Such as Fig. 3
Shown in, it is contemplated that each groove in this at least one groove of the outer surface of handle 20 is optionally oriented to and annular
The respective external passage 38 of crown 30 is in fluid communication.
Optionally, in other illustrative aspects, it is contemplated that the inner surface of handle 20 can limit at least one substantially
It is parallel to the groove (or groove) that longitudinal axes L A of drill bit 10 extends.In these areas, this at least one groove of the inner surface of handle
In each groove optionally corresponding to from the inner surface of handle 20 towards the outer surface of handle circular groove radially.Permissible
It is contemplated that each groove in this at least one groove of the inner surface of handle 20 is optionally oriented to and the phase of annular crown 30
Inner passage 36 is answered to be in fluid communication.
As described in further above, at the aspect that some are optional, and as shown in Fig. 2 A-2B and 4, it is contemplated that
Annular crown 30 can include single gutter, and this gutter extends to the outer surface of annular crown from the inner surface of annular crown.
In these areas, it is contemplated that single gutter can be configured to increase bore the liquid speed in porch, gutter, and because of
This provides the drilling cuttings improved to wash away.
At exemplary aspect, it is contemplated that single gutter can be that axially tapered gutter is (relative to drill bit
Longitudinal axis is tapered).In these areas, it is contemplated that axially tapered gutter can ensure that gutter is in drill bit
Opening in surface is smaller than gutter opening in the outer surface of drill bit.Therefore, by increasing the interior table boring liquid at drill bit
The speed of porch, gutter in face, the effect being similar to nozzle can be acted in gutter.Axially tapered gutter is in order to increase brill
Liquid can provide the drilling cuttings of increase to wash away in the ability of porch, gutter speed, and contributes to preventing the obstruction in gutter.Additionally,
It is contemplated that axially tapered gutter can provide the stream of drilling fluid of improvement without significantly affecting drill main body in inner radius
Volume, or reduce the cutting surface of bit face.It is, therefore, contemplated that boring can be improved in axially tapered gutter
And drill life can be extended.
In some respects, it is contemplated that single gutter can be the most tapered gutter, or changes sentence
Words are said as dual tapered gutter.It is contemplated that this type of dual tapered gutter can help ensure that in gutter from brill
When the inner surface of head extends to the outer surface of drill bit, its size increases on each axis.It is contemplated that increase dual
The size in tapered gutter can reduce the possibility that chip resides in gutter, and therefore promotes the boring performance of drill bit.Separately
It is outer it is contemplated that dual tapered gutter can allow, at the less gutter opening of inner radius, to still allow for boring simultaneously
The big gutter opening of the outer radius of head.It is contemplated that this structure can allow the increase of the matrix material amount in inner radius,
Hence help to extend the life-span of drill bit, also provide for effectively washing away simultaneously.It can furthermore be envisaged that, the prolongation of such drill bit
Life-span by reducing drill string from boring pull-out to change the demand of drill bit of premature abrasion, thus boring cost can be reduced.
As seen in figs. 2a-2b, single gutter can be the recess limited by least three surface 112a, 112b, 112c
112.Specifically, recess 112 can be limited by the first side surface 112a, opposite flank 112b and top surface 112c.Appoint
Selection of land, it is contemplated that each in side surface 112a, 112b can along be approximately perpendicular to crown inner surface direction from
The inner surface of crown extends to the outer surface of crown.It is, therefore, contemplated that recess 112 is at the width of the outer surface of crown
Degree can be substantially equal to the recess 112 width at the inner surface of crown.In other words, recess 112 is in the first side of outer surface
Circumferential distance between surface 112a and the second side surface 112b can be substantially equal to the recess 112 first side surface at inner surface
Circumferential distance between 112a and the second side surface 112b.Alternatively, at the aspect that other are optional, such as following institute
It is described in further detail, it is contemplated that one or more in side surface 112a, 112b can have radially and/or circumferentially bores
Degree.
It is contemplated that recess 112 can have its any shape worked as expected of permission.Specifically, Ke Yishe
Thinking, the shape of recess 112 and structure can be changed according to the characteristic needed for drill bit and/or the characteristic on stratum to be holed.
For example, it is envisioned that, when observing from cutting face, recess optionally has rectangular shape.Alternatively,
At the aspect that other are optional, it is contemplated that recess can have square, triangle, circle, trapezoidal, polygon or ellipse
Shape or their any combination.
It is contemplated that recess 112 can have permission its any width worked as expected or length.Exemplary
Aspect, it is contemplated that the length (distance the most from the inner surface to outer surface) that recess 112 has can more than its width (i.e.
Distance between 112a and 112b of opposite flank).But, in the present invention optional is implemented, recess 112 can have and is more than
The width of its length, or can have the width being substantially equal to its length.
As described above, gutter (i.e. recess 112) can be axially tapered.On exemplary aspect, the top of recess 112
Surface, portion 112c can be along substantially the most tapered towards the direction of handle from cutting face.In other words, it can be envisaged that
, the height of recess 112 or longitudinal size can extend from the inner surface of crown to outer surface along with recess 112 and increase.Cause
This, in some illustrative aspects, recess 112 can be more than the recess 112 longitudinal direction at inner surface at the longitudinal size of outer surface
Size.In other words, recess 112 can extend the first distance to cutting face and at outer surface extension second distance at inner surface
To cutting face, wherein second distance is more than the first distance.
It is contemplated that the axial tapering of recess 112 can help ensure that recess 112 opening at the inner surface of crown
Mouth is less than the recess 112 opening in the outer surface of crown.It can furthermore be envisaged that, this difference on opening size can increase
Speed at inner surface when stream of drilling fluid is moved on the outer surface of crown.Therefore, as it has been described above, the axial tapering of recess 112 can
There is provided more efficiently drilling cuttings to wash away to cool down with cutting face.Furthermore, it is contemplated that, the size that recess increases can also contribute to
Guarantee bore liquid force chip from inner surface migration outer surface time, these chips will not jam or be blocked in recess 112.
Furthermore, it is contemplated that, the axial tapering of recess 112 can be that recess 112 provides the size increased, without subtracting
The size in little cutting face.It can furthermore be envisaged that, the region, surface that cutting face increases can provide more efficiently boring.This
Outward, it is contemplated that the axial tapering of recess can provide washing away and cooling down of enhancing, the most also will not reduce at inner surface
The volume of crown material.It is also contemplated that the volume that increases of crown material can help to extend the brill of drill bit at inner surface
The hole life-span.
Optionally, at exemplary aspect, it is contemplated that crown can limit at least one interior groove, this interior groove
It is in fluid communication with recess 112.In these areas, it is contemplated that this at least one interior groove can start along crown from handle
Inner surface axial extend to recess 112.It can furthermore be envisaged that, this at least one interior groove can help to guide brill liquid
To recess 112.In another optional aspect, it is contemplated that this at least one interior groove can extend to cutting face from handle,
Or extend even along handle.
Optionally, in other illustrative aspects, it is contemplated that drill bit can include at least one external slot.At these
Aspect, it is contemplated that this at least one external slot can extend from the outer surface of crown towards the inner surface radial direction of crown.Can
With it is contemplated that this at least one external slot can help to be directed towards handle by boring liquid from recess along the outer surface of drill bit.Appoint
Selection of land, it is contemplated that this at least one external slot can axially extend to handle from recess 112 along outer surface.At another
Optional aspect, it is contemplated that this at least one external slot can extend to handle from cutting face, or extends even along handle.
As described above, at exemplary aspect, single gutter 112 can be dual tapered gutter.In these areas,
Recess 112 also can have radially tapering in addition to axial tapering.In some respects, the second side surface 112b of recess 112 is permissible
The most clockwise direction is the most tapered around the girth in cutting face.As used herein, term " clockwise "
Relative to the direction of longitudinal axis of drill bit when " counterclockwise " refers to the cutting face observing drill bit.Therefore, the width of recess 112
Outer surface can be extended to along with recess 112 from the inner surface of crown and increase.Therefore, in some respects, recess 112 is at outer surface
The width at place can be more than the recess 112 width at inner surface.In other words, recess 112 is at the first side surface of outer surface
Circumferential distance between 112a and the second side surface 112b can be more than the recess 112 first side surface 112a at inner surface and the
Circumferential distance between two side surface 112b.
In operation, it is contemplated that the radial direction tapering of recess 112 can ensure that recess 112 is at the inner surface of crown
Opening less than recess 112 at the opening of the outer surface of crown.It can furthermore be envisaged that, this difference on opening size can
Increase the speed at inner surface when stream of drilling fluid is moved on the outer surface of crown.Therefore, as set forth above, it is possible to it is contemplated that recessed
The radial direction tapering of mouth 112 can provide more efficiently drilling cuttings to wash away and cutting face cools down.Furthermore, it is contemplated that, recess 112
The width of increase can also contribute to guarantee bore liquid force chip from inner surface migration outer surface time, these chips will not jam
Or be blocked in recess 112.
Optionally, in some respects, the radial direction tapering of recess 112 can be formed by the second tapered side surface 112b.As
Another selects, in other respects, it is contemplated that the first side surface 112a can be tapered.For example, it is envisioned that
Be, the first side surface 112a can along with direction the most counterclockwise around cutting face girth the most gradually
Contracting.Optionally, in some respects, the first side surface 112a and the second side surface 112b may comprise tapering, and this tapering is with substantially
Clockwise direction extends to outer surface around the girth in cutting face from inner surface.In these areas, it is contemplated that second
The radial direction tapering of side surface 112b can have the tapering bigger for side surface 112a than first, and concrete mode is the width of recess 112
Extend to outer surface along with recess 112 from inner surface and increase.
Optionally, at exemplary aspect, the top surface 112c of recess 112 can along substantially from cutting face towards the side of handle
To the most tapered.In other words, it is contemplated that the longitudinal size of recess 112 can along with recess 112 from
The inner surface of crown extends to outer surface and increases.Therefore, in some respects, it is contemplated that recess 112 is in outer surface
Longitudinal size can be more than the recess 112 longitudinal size at inner surface.In other words, it is contemplated that recess 112 can be
Extend at inner surface the first distance to cutting face and outer surface extend second distance to cutting face, wherein second distance is more than
First distance.
In use, it is contemplated that the axial tapering of recess 112 can help ensure that recess 112 is in crown
The opening of surface is less than the recess 112 opening in the outer surface of crown.It is contemplated that this difference on opening size
The speed at inner surface when stream of drilling fluid is moved on the outer surface of crown can be increased.Therefore, as set forth above, it is possible to it is contemplated that
The axial tapering of recess 112 can provide more efficiently drilling cuttings to wash away and cool down with cutting face.Furthermore, it is contemplated that, recess
The size of the increase of 112 can also contribute to guarantee that these chips will not when brill liquid forces chip from inner surface migration outer surface
Jam or be blocked in recess 112.
At exemplary aspect, it is contemplated that dual tapered recess 112 can ensure that recess 112 is in drill bit
When surface extends to outer surface, its size increases on each axis (the most radial and axial).Increase dual tapered recess
The size of 112 can reduce chip and reside in the possibility in recess 112, and therefore promotes the boring performance of drill bit.Additionally, such as it
Described in before, it is contemplated that the size increasing dual tapered recess 112 can help to maximize matrix material at inner surface
Volume, and thus can by reduce at inner surface premature bit failure and extend the life-span of drill bit.
At exemplary aspect, drill bit 10 disclosed herein can be diamond-impregnated bit, and wherein diamond insert exists
In matrix.In these areas, it is contemplated that each drill bit 10 can include multiple selected material, wherein every kind of material
It is provided with the selected percentage by weight of drill bit.It is contemplated that each drill bit 10 can include that any the desired amount of carbon (does not wraps
Include diamond), such as, such as but not limited to, the amount in the range of (in terms of the weight of diamond) from about 0.00% to about 7.00%.
At exemplary aspect, the carbon of drill bit 10 can be provided with at least one in carbon dust and carbon fiber.It can furthermore be envisaged that,
Each drill bit 10 can include any the desired amount of chromium, such as, such as but not limited to, from about 0.00% to about 1.00% (with drill bit
Weight meter) in the range of amount.It can furthermore be envisaged that, each drill bit 10 can include any the desired amount of cobalt, such as, such as
But it is not limited to, the amount in the range of (in terms of the weight of drill bit) from about 0.00% to about 1.00%.Optionally, it can furthermore be envisaged that
It is that each drill bit 10 can include any the desired amount of copper, such as, such as but not limited to, from about 0.00% to about 30.00% (with
The weight meter of drill bit) in the range of amount.It can furthermore be envisaged that, each drill bit 10 can include any the desired amount of iron, such as,
Such as but not limited to, the amount in the range of (in terms of the weight of drill bit) from about 50.00% to about 90.00%.It can furthermore be envisaged that
It is that each drill bit 10 can include any the desired amount of manganese, such as, such as but not limited to, from about 0.00% to about 8.00% (to bore
Head weight meter) in the range of amount.It can furthermore be envisaged that, each drill bit 10 can include any the desired amount of molybdenum, such as, example
Such as, but not limited to, the amount in the range of (in terms of the weight of drill bit) from about 0.00% to about 0.20%.It can furthermore be envisaged that, often
Individual drill bit 10 can include any the desired amount of nickel, such as, such as but not limited to, from about 0.00% to about 6.00% (with drill bit
Weight meter) in the range of amount.It can furthermore be envisaged that, each drill bit 10 can include any the desired amount of silicon, such as, such as but
It is not limited to, the amount in the range of (in terms of the weight of drill bit) from about 0.00% to about 0.50%.It can furthermore be envisaged that, each brill
10 can include any the desired amount of carborundum, such as, such as but not limited to, from about 0.00% to about 2.00% (with drill bit
Weight meter) in the range of amount.It can furthermore be envisaged that, each drill bit 10 can include any the desired amount of silver, such as, such as but
It is not limited to, the amount in the range of (in terms of the weight of drill bit) from about 0.00% to about 12.00%.It can furthermore be envisaged that, each
Drill bit 10 can include any the desired amount of tin, such as, such as but not limited to, (the weight with drill bit from about 0.00% to about 6.00%
Gauge) in the range of amount.It can furthermore be envisaged that, each drill bit 10 can include any the desired amount of tungsten, such as, such as but not
It is limited to, the amount in the range of (in terms of the weight of drill bit) from about 0.00% to about 41.00%.It can furthermore be envisaged that, each brill
10 can include any the desired amount of tungsten carbide, such as, such as but not limited to, from about 0.00% to about 35.00% (with drill bit
Weight meter) in the range of amount.It can furthermore be envisaged that, each drill bit 10 can include any the desired amount of zinc, such as, such as but
It is not limited to, the amount in the range of (in terms of the weight of drill bit) from about 0.00% to about 24.00%.It can furthermore be envisaged that, herein
The matrix of disclosed tunneling boring drill bit can be configured to the supporting construction formed behind of diamond in drill bit, thus prevents behaviour
The diamond inlayed is polished during work.
It can furthermore be envisaged that, the composition of radial direction change matrix thinks that the whole operability drilling area of the crown of drill bit provides
The most consistent abrasion.In one aspect, it is contemplated that crown can be divided into the section that at least three entirety is adjacent, this
A little sections extend to the outer surface of crown from the inner surface of crown along the direction of the inner surface being approximately perpendicular to crown.Firstth district
Section the most substantially becomes cylindrical, and the inner surface formed from crown extends out to from inner surface with required separation distance radially
The first surface at interval.3rd outer sections the most substantially becomes cylindrical, and the outer surface formed from crown inwardly prolongs
Extend from outer surface with radially spaced 3rd surface of required separation distance.Finally, in this example embodiment, it is provided that at least one secondth district
Section, this section substantially becomes cylindrical and radially extends between the first section and the second section, and forming entirety with these two parts.
In one aspect, this at least one second section can include the second section of single second section or multiple radially layered.At this
In example, at least one in the second section of multiple radially layereds is different from another radially layered by having rate of depreciation
The matrix composition of the rate of depreciation of section.At exemplary aspect, owing to conventional bit is to being embedded in corresponding internal diameter and external diameter is attached
Diamond or the support of other cutting elements in nearly matrix reduce, in operation near inner surface and the surface wear of crown
More, it is contemplated that corresponding first section and the 3rd section can be by having than at least one the second section wear rate more
High matrix composition is formed.It is favourable that the matrix material reduced with abrasion forms the second section, because the energy needed for drill bit
Less, and whole crown in operation formed wear patterns be more uniformly distributed.
At exemplary aspect, and with reference to Fig. 5, drill bit disclosed herein can be as a part for hole-drilling system 500
It is provided.In these areas, it is contemplated that hole-drilling system 500 can include drill bit 510, mast 520, rig 530 and bore
Post 550, this drill string is configured to be fixed to rig, and is rotated by rig, as being conventionally known in the art
's.It can furthermore be envisaged that, drill bit 560 can be operably linked to one end of drill string 550.For example, it is envisioned that,
Drill bit 10 can be connected to drill string 550 as disclosed herein.In operation, rotate along with rig 530 and push drill string 550, can
With it is contemplated that drill bit 560 (corresponding to drill bit 10 as disclosed herein) can grind off material in stratum 570.
In use, it is contemplated that disclosed drill bit lacks (or at utmost reduce) gutter slit or
Window can increase the intensity (compared with the conventional bit with such slit or window) of drill bit.It can furthermore be envisaged that, institute herein
Disclosed drill bit can by increase the coolant at neighbouring bit face speed and guide coolant cross bit face lead and
Coolant is not entered gutter slit, passage or window, and allows the flush efficiency improved and improve drill bit cooling.
The intensity of increase and the flush efficiency of improvement due to annular bit disclosed herein, it is contemplated that with
Known drill bit is compared, and disclosed annular bit can show less abrasion and have the functional product life-span of prolongation.Separately
Outward it is contemplated that the intensity of the increase of disclosed tunneling boring drill bit can allow to manufacture higher annular crown with washing away,
Thus extend the life-span of drill bit functional product further.
Experiment embodiment
In an experiment embodiment, during normal operation, annular bit as disclosed herein shows institute's water requirement
Than conventional bit few about 25%.
In another experiment embodiment, during normal operation, it is shown that annular bit is at its end as disclosed herein
At face, the fluid velocity of experience is more than three times of this speed of end of conventional bit design.
In another experiment embodiment, it is shown that not there is the drill bit in gutter as disclosed herein, at any dipping
Depth has the speed of constant.
Illustrative aspects
At exemplary aspect, it is provided that for forming the drill bit in hole in the earth formation, this drill bit has longitudinal axis and wraps
Include: handle；Annular crown, this annular crown its there is cutting face, inner surface and outer surface, tunneling boring crown and handle coordinate with restriction
Around the inner space of longitudinal axis, in wherein the multiple inner surface around annular crown of annular crown restriction is multiple circumferentially-spaced
Portion's passage, the wherein multiple multiple circumferentially-spaced external channel of outer surface around annular crown of annular crown restriction, and wherein
Annular crown the most circumferentially surrounds inner space.
In another illustrative aspects, annular crown does not include extending to annular crown from the inner surface radial direction of annular crown
The gutter of outer surface.In alternative illustrative aspects, annular crown includes prolonging from the inner surface radial direction of annular crown
Reach the single gutter of the outer surface of annular crown.
In another illustrative aspects, annular crown can have radial thickness, Qi Zhongduo between the interior and exterior surfaces
Each inner passage in individual inner passage has a radial dimension of radial thickness less than annular crown, and plurality of outside
Each external channel in portion's passage has the radial dimension of the radial thickness less than annular crown.
Ratio between another illustrative aspects, radial thickness and the radial dimension of multiple inner passage of annular crown
Rate can be in the range of about 1.5:1 to about 3.5:1.
Ratio between another illustrative aspects, radial thickness and the radial dimension of multiple external channel of annular crown
Rate can be in the range of about 1.5:1 to about 3.5:1.
In another illustrative aspects, the radial dimension of multiple inner passages can be more than the radial ruler of multiple external channels
Very little.
In another illustrative aspects, the number of inner passage can be identical with the number of external channel.
In another illustrative aspects, the number of inner passage can be more than the number of external channel.
In another illustrative aspects, the number of inner passage is smaller than the number of external channel.
Each external channel in another illustrative aspects, multiple external channels can be by circumferentially positioned in multiple inside
Between the continuous inner passage of passage.
At other exemplary aspect, it is possible to provide hole-drilling system, this hole-drilling system includes: rig；It is configured to fix
To described rig and the drill string that rotated by described rig；And for forming the drill bit in hole in the earth formation, this drill bit has
Longitudinal axis also includes: handle；Annular crown, this annular crown its there is cutting face, inner surface and outer surface, tunneling boring crown with
Handle coordinates to limit the inner space around longitudinal axis, and wherein annular crown limits multiple inner surface week around annular crown
To spaced apart inner passage, wherein the multiple multiple circumferentially-spaced outside of outer surface around annular crown of annular crown restriction leads to
Road, and wherein annular crown the most circumferentially surrounds inner space.
In another illustrative aspects, the annular crown of drill bit does not include extending to ring from the inner surface radial direction of annular crown
The gutter of the outer surface of shape crown.In alternative illustrative aspects, annular crown includes the inner surface from annular crown
Extend radially into the single gutter of the outer surface of annular crown.
In another illustrative aspects, the annular crown of drill bit can have radial thickness between the interior and exterior surfaces,
Each inner passage in plurality of inner passage has a radial dimension of radial thickness less than annular crown, and wherein
Each external channel in multiple external channels has the radial dimension of the radial thickness less than annular crown.
In another illustrative aspects, multiple inner passages of the radial thickness of the annular crown of drill bit and annular crown
Ratio between radial dimension can be in the range of about 1.5:1 to about 3.5:1.
Radial direction at another illustrative aspects, the radial thickness of the annular crown of drill bit and multiple external channels of drill bit
Ratio between size can be in the range of about 1.5:1 to about 3.5:1.
In another illustrative aspects, the radial dimension of multiple inner passages of drill bit can lead to more than multiple outsides of drill bit
The radial dimension in road.
In another illustrative aspects, the number of the inner passage of drill bit can be with the number phase of the external channel of drill bit
With.
In another illustrative aspects, the number of the inner passage of drill bit can be more than the number of the external channel of drill bit.
In another illustrative aspects, the number of the inner passage of drill bit is smaller than the number of the external channel of drill bit.
Each external channel in another illustrative aspects, multiple external channels of drill bit can be by circumferentially positioned in brill
Between the continuous inner passage of multiple inner passages of head.
Although several embodiments of the present invention disclosed in the description above, but those skilled in the art should
Understanding, many amendments and other embodiments belonging to the present invention will be conceived, its have described above with relevant drawings in
The beneficial effect of existing teaching.It will thus be appreciated that the invention is not restricted to specific embodiment disclosed above and many
Modification and other embodiments are intended to be included in the scope of the appended claims.Although additionally, there is employed herein spy
Fixed term, and claims below also uses specific term, they are used only for general and illustrative meaning
Justice rather than in order to limit the purpose of described invention, be not to limit claims below purpose.
Claims (22)
1., for forming the drill bit in hole in the earth formation, described drill bit has longitudinal axis and includes:
Handle；
Annular crown, described annular crown has cutting face, inner surface and outer surface, described tunneling boring crown and described handle and coordinates
To limit the inner space around described longitudinal axis,
Wherein said annular crown limits multiple multiple circumferentially-spaced inner passage of described inner surface around described annular crown,
Wherein said annular crown limits multiple multiple circumferentially-spaced external channel of described outer surface around described annular crown,
And
Wherein said annular crown the most circumferentially surrounds described inner space.
Drill bit the most according to claim 1, wherein said annular crown does not include the described interior table from described annular crown
Face extends radially into the gutter of the described outer surface of described annular crown.
Drill bit the most according to claim 1, wherein said annular crown has between described inner surface and described outer surface
Radial thickness, each inner passage in wherein said multiple inner passages is had to have the described radial direction less than described annular crown
Each external channel in the radial dimension of thickness, and wherein said multiple external channel has less than described annular crown
The radial dimension of described radial thickness.
Drill bit the most according to claim 3, the described radial thickness of wherein said annular crown leads to the plurality of inside
Ratio between the described radial dimension in road is in the range of about 1.5:1 to about 3.5:1.
Drill bit the most according to claim 4, the described radial thickness of wherein said annular crown leads to the plurality of outside
Ratio between the described radial dimension in road is in the range of about 1.5:1 to about 3.5:1.
Drill bit the most according to claim 3, the described radial dimension of wherein said multiple inner passages is more than the plurality of
The described radial dimension of external channel.
Drill bit the most according to claim 1, the number of wherein said inner passage is identical with the number of described external channel.
Drill bit the most according to claim 1, the number of wherein said inner passage is more than the number of described external channel.
Drill bit the most according to claim 1, the number of wherein said inner passage is less than the number of described external channel.
Drill bit the most according to claim 1, each external channel in wherein said multiple external channels is circumferentially positioned
Between the continuous inner passage of the plurality of inner passage.
11. drill bits according to claim 1, wherein said annular crown includes the described inner surface from described annular crown
Extend radially into the single gutter of the described outer surface of described annular crown.
12. 1 kinds of hole-drilling systems, described hole-drilling system includes:
Rig；
It is configured to the drill string being fixed to described rig and being rotated by described rig；And
For forming the drill bit in hole in the earth formation, described drill bit has longitudinal axis and includes:
Handle；
Annular crown, described annular crown has cutting face, inner surface and outer surface, described tunneling boring crown and described handle and coordinates
To limit the inner space around described longitudinal axis,
Wherein said annular crown limits multiple multiple circumferentially-spaced inner passage of described inner surface around described annular crown,
Wherein said annular crown limits multiple multiple circumferentially-spaced external channel of described outer surface around described annular crown,
And
Wherein said annular crown the most circumferentially surrounds described inner space.
13. hole-drilling systems according to claim 12, the described annular crown of wherein said drill bit does not include from described ring
The described inner surface radial direction of shape crown extends to the gutter of the described outer surface of described annular crown.
14. hole-drilling systems according to claim 12, the described annular crown of wherein said drill bit at described inner surface and
Having radial thickness between described outer surface, each inner passage in wherein said multiple inner passages has less than described ring
Each external channel in the radial dimension of the described radial thickness of shape crown, and wherein said multiple external channel has little
Radial dimension in the described radial thickness of described annular crown.
15. hole-drilling systems according to claim 14, the described radial thickness of the described annular crown of wherein said drill bit
And described annular crown the plurality of inner passage described radial dimension between ratio at about 1.5:1 to about 3.5:1's
In the range of.
16. hole-drilling systems according to claim 15, the described radial thickness of the described annular crown of wherein said drill bit
And the ratio between the described radial dimension of the plurality of external channel of described drill bit is in the scope of about 1.5:1 to about 3.5:1
In.
17. hole-drilling systems according to claim 14, the described radial direction of the plurality of inner passage of wherein said drill bit
Size is more than the described radial dimension of the plurality of external channel of described drill bit.
18. hole-drilling systems according to claim 12, the number of the described inner passage of wherein said drill bit and described brill
The number of the described external channel of head is identical.
19. hole-drilling systems according to claim 12, the number of the described inner passage of wherein said drill bit is more than described
The number of the described external channel of drill bit.
20. hole-drilling systems according to claim 12, the number of the described inner passage of wherein said drill bit is less than described
The number of the described external channel of drill bit.
21. hole-drilling systems according to claim 12, outside each in the plurality of external channel of wherein said drill bit
Portion's passage by circumferentially positioned between the continuous inner passage of the plurality of inner passage of described drill bit.
22. hole-drilling systems according to claim 12, wherein said annular crown includes from described in described annular crown
Inner surface radial direction extends to the single gutter of the described outer surface of described annular crown.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361921847P | 2013-12-30 | 2013-12-30 | |
| US61/921,847 | 2013-12-30 | ||
| PCT/US2014/072683 WO2015103213A1 (en) | 2013-12-30 | 2014-12-30 | No-waterway or single waterway drill bits and systems and methods for using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105874144A true CN105874144A (en) | 2016-08-17 |
Family
ID=53481137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480071762.9A Pending CN105874144A (en) | 2013-12-30 | 2014-12-30 | No-waterway or single waterway drill bits and systems and methods for using same |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US20150184465A1 (en) |
| EP (1) | EP3090118A4 (en) |
| CN (1) | CN105874144A (en) |
| AU (1) | AU2014373896A1 (en) |
| BR (1) | BR112016015209A2 (en) |
| CA (1) | CA2934945A1 (en) |
| CL (1) | CL2016001668A1 (en) |
| PE (1) | PE20160972A1 (en) |
| WO (1) | WO2015103213A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9506298B2 (en) | 2013-11-20 | 2016-11-29 | Longyear Tm, Inc. | Drill bits having blind-hole flushing and systems for using same |
| US8459381B2 (en) | 2006-12-14 | 2013-06-11 | Longyear Tm, Inc. | Drill bits with axially-tapered waterways |
| US9279292B2 (en) | 2013-11-20 | 2016-03-08 | Longyear Tm, Inc. | Drill bits having flushing and systems for using same |
| US9500036B2 (en) | 2006-12-14 | 2016-11-22 | Longyear Tm, Inc. | Single-waterway drill bits and systems for using same |
| PE20171508A1 (en) | 2015-03-05 | 2017-10-20 | Longyear Tm Inc | DISCHARGE DRILL HOLES |
| JP6924214B2 (en) * | 2019-01-18 | 2021-08-25 | 株式会社ミラノ製作所 | Core drill bit |
| CN113802989B (en) * | 2021-09-18 | 2022-04-29 | 吉林大学 | Ultrahigh working layer involute type water gap diamond-impregnated bit and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189015A (en) * | 1978-08-21 | 1980-02-19 | Acker Drill Company, Inc. | Drill bits for obtaining core samples |
| US20070246266A1 (en) * | 2004-07-01 | 2007-10-25 | Goran Larbo | Drill Bit |
| CN101652532A (en) * | 2006-12-14 | 2010-02-17 | 宝长年公司 | Coring bit with matrix height of prolongation |
| CN103097642A (en) * | 2010-09-13 | 2013-05-08 | 长年Tm公司 | Impregnated drill bits with integrated reamers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPQ784300A0 (en) * | 2000-05-31 | 2000-06-22 | Boart Longyear Pty Ltd | Improved core sampling drill bit |
| US8459381B2 (en) * | 2006-12-14 | 2013-06-11 | Longyear Tm, Inc. | Drill bits with axially-tapered waterways |
| USD622745S1 (en) * | 2006-12-14 | 2010-08-31 | Longyear Tm, Inc. | Drill bit with tapered waterway |
| US7984773B2 (en) * | 2008-05-13 | 2011-07-26 | Longyear Tm, Inc. | Sonic drill bit for core sampling |
| US8590646B2 (en) * | 2009-09-22 | 2013-11-26 | Longyear Tm, Inc. | Impregnated cutting elements with large abrasive cutting media and methods of making and using the same |
-
2014
- 2014-12-30 BR BR112016015209A patent/BR112016015209A2/en not_active Application Discontinuation
- 2014-12-30 EP EP14876565.4A patent/EP3090118A4/en not_active Withdrawn
- 2014-12-30 WO PCT/US2014/072683 patent/WO2015103213A1/en active Application Filing
- 2014-12-30 US US14/585,716 patent/US20150184465A1/en not_active Abandoned
- 2014-12-30 PE PE2016000966A patent/PE20160972A1/en not_active Application Discontinuation
- 2014-12-30 AU AU2014373896A patent/AU2014373896A1/en not_active Abandoned
- 2014-12-30 CN CN201480071762.9A patent/CN105874144A/en active Pending
- 2014-12-30 CA CA2934945A patent/CA2934945A1/en not_active Abandoned
-
2016
- 2016-06-29 CL CL2016001668A patent/CL2016001668A1/en unknown
-
2018
- 2018-04-27 US US15/965,243 patent/US20180313160A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4189015A (en) * | 1978-08-21 | 1980-02-19 | Acker Drill Company, Inc. | Drill bits for obtaining core samples |
| US20070246266A1 (en) * | 2004-07-01 | 2007-10-25 | Goran Larbo | Drill Bit |
| CN101652532A (en) * | 2006-12-14 | 2010-02-17 | 宝长年公司 | Coring bit with matrix height of prolongation |
| CN103097642A (en) * | 2010-09-13 | 2013-05-08 | 长年Tm公司 | Impregnated drill bits with integrated reamers |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2934945A1 (en) | 2015-07-09 |
| US20150184465A1 (en) | 2015-07-02 |
| CL2016001668A1 (en) | 2017-02-10 |
| EP3090118A4 (en) | 2017-07-05 |
| AU2014373896A1 (en) | 2016-08-04 |
| EP3090118A1 (en) | 2016-11-09 |
| US20180313160A1 (en) | 2018-11-01 |
| BR112016015209A2 (en) | 2017-08-08 |
| WO2015103213A1 (en) | 2015-07-09 |
| PE20160972A1 (en) | 2016-10-06 |
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