CN106255797A - There is the Mixed drilling bit of gear wheel and wheel disc - Google Patents
There is the Mixed drilling bit of gear wheel and wheel disc Download PDFInfo
- Publication number
- CN106255797A CN106255797A CN201480078400.2A CN201480078400A CN106255797A CN 106255797 A CN106255797 A CN 106255797A CN 201480078400 A CN201480078400 A CN 201480078400A CN 106255797 A CN106255797 A CN 106255797A
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- main body
- wheel disc
- axis
- wheel
- gear wheel
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- 238000005553 drilling Methods 0.000 title claims abstract description 65
- 238000005520 cutting process Methods 0.000 claims description 35
- 230000036346 tooth eruption Effects 0.000 claims description 27
- 230000015572 biosynthetic process Effects 0.000 claims description 18
- 238000009987 spinning Methods 0.000 claims description 7
- 210000000515 tooth Anatomy 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000002156 mixing Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 2
- 244000287024 Katherine wheel Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- -1 carbide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000017105 transposition Effects 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
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/12—Roller bits with discs cutters
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
- E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A kind of Mixed drilling bit includes that drill main body, described drill main body have center bit main body axis；Gear wheel, described gear wheel is in described drill main body end and is rotatably coupled to described drill main body around gear wheel axis；And wheel disc, described wheel disc is in the described end of described drill main body and is rotatably coupled to described drill main body around wheel disc axis.Described gear wheel axis extends towards described center bit main body axis.Described wheel disc axis is by the central cross of described wheel disc in the RADIAL of described center bit main body axis, and described wheel disc includes multiple wheel disc cutter.
Description
Background of invention
It relates to for the Mixed drilling bit drilling well in the earth formation, and more particularly, to have gear wheel and
The Mixed drilling bit of wheel disc.
For drill the Mixed drilling bit of well generally include be in drill bit probing end at more than one type cutting knot
Structure or cutting element.Cutting structure and cutting element meet with multiple stratum, object and surface during drilling, hard in such as well
And soft lithostratigraphy, cement plug and well backstop thing, well tool and/or other objects and surface.Because cutting element
Material is removed by different institutions (such as, shear, crush, rupture or a combination thereof) with cutting structure, so some cutting units
Part and cutting structure are more suitable for cutting certain material than other cutting elements and cutting structure.
Accompanying drawing is sketched
Fig. 1 is the Some illustrative sectional view of example well system.
Fig. 2 is the perspective schematic view of exemplary Mixed drilling bit.
Fig. 3 A is the schematic end of exemplary Mixed drilling bit.
Fig. 3 B is the schematic side elevation of exemplary Mixed drilling bit profile.
Fig. 4 A is the Some illustrative side cross-sectional view of exemplary wheel disc.
Fig. 4 B is the Some illustrative side cross-sectional view of exemplary gear wheel.
Fig. 5 is the schematic section end-view of exemplary Mixed drilling bit.
In the various figures, the element that similar reference marks instruction is similar.
Detailed description of the invention
With reference first to Fig. 1, well system 10 generally includes substantial cylindrical well 12, and described well 12 is from being at ground 16
Well head 14 extend downwardly into and the earth enter in one or more subterranean zone 18 (illustrating) interested.Subterranean zone
18 may correspond to single stratum, the part on stratum or the more than one stratum entered by well system 10, and given well system
System 10 can enter one or more than one subterranean zone 18.The part and the pipe that extend to subterranean zone 18 from well head 14 of well 12
The length alignment of part (referred to as sleeve pipe 20).The well system 10 described is peupendicular hole, and well 12 is substantially vertical from ground 16
Extend to subterranean zone 18.But, the concepts herein is applicable to other various configurations of many of well, including horizontal well, inclines
The well of inclined shaft or otherwise deflection and there is the multilateral well of supporting leg from entry well deflection.
Drill string 22 is shown as transferring to well 12 from ground 16.In some instances, drill string 22 is end-to-end
The pipe fitting of a series of bonding lengths being coupled together and/or continuous print (that is, not being to engage) after-combustion pipe fitting.Drill string 22 includes
One or more well tools, including shaft bottom assembly 24.Shaft bottom assembly 24 can such as include drill bit.In the example shown, well 12
It is drilled.Well 12 can be segmented probing, and can be arranged between each section by sleeve pipe 20.
With reference to Fig. 2, the exemplary Mixed drilling bit 100 that can use in the shaft bottom assembly 24 of the well system 10 of Fig. 1 is with perspective
The mode of figure illustrates.Exemplary Mixed drilling bit 100 includes that drill main body 102, described drill main body 102 have and is in drill main body
Pin end 104 on one longitudinal end of 102, is in the brill on another longitudinal end relative with pin end 104 of drill main body 102
Visit end 106, and limited center bit main body axis A-A of central longitudinal axis by the center of drill main body 102.Drill bit
100 rotate around center bit main body axis A-A when probing.In some instances, pin end 104 is convex and has screw thread
To coordinate with the spill case at drill string pipe fitting end.Mixed drilling bit 100 includes that gear wheel 108, described gear wheel 108 are rotatably coupled to
Extend and exceed the gear wheel of the end (such as, probing end 106) of drill main body 102 substantially along center bit main body axis A-A
Arm 110.The gear wheel axis that each in gear wheel 108 extended towards center bit main body axis A-A in (directly or substantially)
B-B is upper to be rotated.Mixed drilling bit 100 also includes that wheel disc 112, described wheel disc 112 are rotatably coupled to substantially along center bit master
Body axis A-A extends and exceedes the wheel disc arm 114 of the end (such as, probing end 106) of drill main body 102.In wheel disc 112
Each by the central cross of each in wheel disc 112 in the wheel disc axle of the RADIAL of center bit main body axis A-A
Rotate on line C-C.Mixed drilling bit 100 is considered as " mixing " because it have more than one type cutting structure and/or
Cutting element, such as, gear wheel 108 and wheel disc 112.
Various types of cutting elements and cutting structure may be provided on Mixed drilling bit.In example shown in figure 2, mixed
Bench drill head 100 includes two gear wheels 108 and two wheel discs 112.Exemplary Mixed drilling bit 100 can include other or different spy
Levy portion and parts.Such as, drill bit 100 can be provided with gear wheel 108 and the wheel disc 112 of varying number.In some instances, mixing is bored
Head can have one or more wheel disc and one or more gear wheel.Such as, Mixed drilling bit can have a wheel disc and a gear wheel,
One wheel disc and multiple gear wheel, multiple wheel discs and a gear wheel or multiple wheel disc and multiple gear wheel.
Gear wheel arm 110 and wheel disc arm 114 are illustrated to be attached to drill main body 102 with securing member 116 so that gear wheel arm 110
Can remove from drill main body 102 with wheel disc arm 114.In some instances, gear wheel arm 110 and wheel disc arm 114 are drill main bodies 102
Extension, be welded to drill main body 102 or with drill main body 102 integrally casting, and/or be connected to drill bit in another way
Main body 102.
In some instances, gear wheel 108 is at the main shaft extended along gear wheel axis B-B from drill main body 102 or gear wheel arm 110
Rotate on (not shown).Similarly, in some instances, wheel disc 112 is spiraling along wheel from drill main body 102 or wheel disc arm 114
Rotate on the main shaft (not shown) that shaft axis C-C extends.Gear wheel 108 and wheel disc 112 can be attached to main shaft by bearing arrangement, with
Gear wheel 108 is allowed to rotate around wheel disc axis C-C around gear wheel rotation axis B-B and/or wheel disc 112.Described bearing arrangement can be such as
Including sealing member, ball bearing, lubricating system and/or pressure compensating system.
Gear wheel 108 can operate at many positions and configuration.In shown example, gear wheel 108 is radially positioned to close
The outer lateral of probing end 106 is to periphery.In some instances, gear wheel 108 the most inwardly center bit main body axis A-A
Arrange, outwards arrange from center drill main body axis A-A more, or be arranged in diverse location.In some instances, gear wheel
Axis B-B intersects with center bit main body axis A-A, such as so that when exemplary Mixed drilling bit 100 is around its center drill main body
When axis A-A rotates, it is allowed to abut against lithostratigraphy roller cone 108.When gear wheel axis B-B and center bit main body axis A-
When crossing and gear wheel 108 the radial vector being perpendicular to gear wheel axis B-B of A points to the direction of rotation of Mixed drilling bit 100, roll
Occur.In other instances, gear wheel axis B-B does not intersects with center bit main body axis A-A, and gear wheel axis B-B from
Heart drill main body axis A-A is non-radial.When gear wheel axis B-B does not intersects with center bit main body axis A-A, gear wheel supports
There is other sliding motion against stratum.In some instances, Mixed drilling bit can have an at least two gear wheel, wherein first
Gear wheel has a gear wheel axis intersected with center bit main body axis, and second gear wheel have not with center bit body shaft
The gear wheel axis that line intersects.
Each in gear wheel 108 includes gear wheel main body 118 and the multiple cutting teeths 120 being arranged in gear wheel main body 118.
In example shown in figure 2, cutting teeth 120 is the wedge-shaped projection extended from gear wheel main body 118.In other instances, cutting
Tooth 120 is difform projection in gear wheel main body 118.Cutting teeth 120 can be ground and/or can be insert.At certain
In a little examples, the steel tooth of the grinding such as ground to form by steel gear wheel main body 118 can be provided with stiff dough metal coating with behaviour
Crushing force is born during making exemplary Mixed drilling bit 100.Insert often includes different materials, such as carbide, tungsten, diamond
And/or other hard materials.In example shown in figure 2, two gear wheels 108 have same shape and size.Real at other
In example, one or more in the gear wheel on Mixed drilling bit have difformity or size each other.
Wheel disc 112 may be provided in multiple position and configuration.In shown example, wheel disc 112 is radially positioned to close
The outer lateral of probing end 106 is to periphery.In some instances, wheel disc 112 the most inwardly center bit main body axis A-A
Arrange, outwards arrange from center drill main body axis A-A more, or be arranged in diverse location.Each in wheel disc 112
Including wheel disc main body 122, described disc main body 122 of taking turns has in the cutting row 124 being disposed around taking turns disc main body 122 circumference many
Individual wheel disc cutter 126.Cutting row 124 restriction Plane of rotation 128 (Fig. 4 A) by the center of cutting row 124, wherein rotary shaft
Line C-C is perpendicular to Plane of rotation 128.The center of wheel disc is rotation axis C-C and the intersection point of Plane of rotation 128.Each take turns dise knife
Tool 126 includes general cylindrical cutter body and is in (substantially or completely) of cylinder-shaped body end flat end face.Cutter
In each be arranged on tool axis D-D.By the axis D-D at cylindrical tool body center transverse to from wheel disc 112
Center to the RADIAL at the center of cylindrical tool body.In some instances, tool axis D-D is parallel to wheel disc axis C-
C.In other instances, tool axis D-D is to become non-zero angle to tilt with wheel disc axis C-C.One or more in cutter 126
(or all) can with wheel disc axis C-C equal angular at have in tool axis D-D, or cutter 126 one or more (or
All) can have tool axis D-D at different angles.The wheel disc cutter 126 orientation on wheel disc 112 can be bored in operation mixing
Make wheel disc 112 be biased into rotation during 100, some of which orientation be deflection to promote that wheel disc 112 rotates quickly, and
Some other orientation is more slowly rotating with promotion wheel disc 112 of deflection.Wheel in example shown in figure 2, on wheel disc 112
Dise knife tool 126 is around corresponding wheel disc axis C-C orientation similarly to one another.Such as, during operation example Mixed drilling bit 100,
Wheel disc 112 rotates around they corresponding wheel disc axis C-C, and wheel disc cutter 126 orients around wheel disc 112 so that work as respective wheel
Each wheel disc cutter 126 on dish 112 is fixing on wheel disc 112, non-rotating some time (that is, its contact is drilled boring
During bottom) it is similarly oriented.In other instances, the wheel disc cutter 126 in wheel disc 112 is taken turns accordingly around them
Disk axis C-C orients differently from one another.Such as, when wheel disc 112 rotates around its wheel disc axis C-C, wheel disc cutter 126 can be determined
It is formed at round between the back rake angle of change.
In some instances, the cylinder form being shaped differently than shown in Fig. 2 of wheel disc cutter 126.Such as, wheel dise knife
Tool 126 can be rectangle, point or another kind of shape.In other instances, whole around main body 122 of single continuous print cutter
Circumference provides.
In example shown in figure 2, two wheel discs 112 have same shape and size.In other instances, mixing is bored
One or more in wheel disc on head have difformity or size each other.Wheel disc cutter 126 is shown as being partially embedded into
Cylindrical composite polycrystal-diamond (PDC) cutter in the cutting row 124 of wheel disc 112.Wheel disc cutter 126 can be partially embedded into
In wheel disc main body 122, by welding, securing member, bonding mode is utilized to be couple to take turns disc main body 122, and/or around wheel disc main body
122 are otherwise arranged.In some instances, wheel disc cutter 126 is different, and such as, natural diamond insert, heat are steady
Fixed PDC cutter, Tungsten-carbide inserts, metal insert, milling cutter or tooth or another kind of hard and high-abrasive material.
In some instances, drill main body 102 includes being in the nozzle 130 at probing end 106, with during drilling to mixed
Bench drill head 100 provides drilling fluid.
With reference to Fig. 3 A, exemplary Mixed drilling bit 100 illustrates with end-view, specifically, it is shown that probing end 106.Gear wheel axis
B-B extends towards center bit main body axis A-A, and wheel disc axis C-C passes through the central cross of wheel disc 112 in center bit
The RADIAL of main body axis A-A.
In the example illustrated in figure 3 a, gear wheel axis B-B intersects with center bit main body axis A-A.At some examples
In, gear wheel axis B-B is non-radial from center bit main body axis A-A, such as, schematically describes as in Fig. 5.Fig. 5 shows
Publishing picture the Some illustrative end-view of exemplary Mixed drilling bit 100 of 3A, except for the difference that the gear wheel axis B-B of Fig. 5 is from centre drill
Head main body axis A-A is non-radial.If non-radial, then in gear wheel axis B-B and center bit main body axis A-A
Between offset distance e 10.5 inch dimension or less drill bit medium and small in or equal to 9/16 inch.Such as, offset distance e can
To be 0.0625 inch, 0.125 inch or another value.Offset distance e is center bit main body axis A-A and gear wheel axis B-
Beeline between B.In other words, offset distance e can be defined as gear wheel axis B-B and by center bit body shaft
Distance between the plane of line A-A, wherein said plane is parallel to gear wheel axis B-B.In some instances, offset distance e pair
Also it is such in each gear wheel 108.In other instances, offset distance e is for one or more gear wheels 108 or each gear wheel
108 is different.Gear wheel 108 acts as by crushing stratum with the spinning movement of cutting teeth 120 and/or making formation fracture.
Cutting teeth 120 crushes stratum and/or makes formation fracture to produce broken formation cuttings.
In some instances, offset distance e is little so that when Mixed drilling bit 100 revolves around center bit main body axis A-A
Turning and drill end 106 when abutting against stratum, gear wheel 108 is to shear in a small amount or the rolling movement rotation of sliding relative to rolling to have
Turn.In the example with little offset distance e, the rolling movement with shearing or sliding in a small amount promotes to be drilled in stratum,
Such as, it is drilled in soft formation.In other instances, offset distance e is zero (such as, as depicted in fig. 3a) so that when mixed
Bench drill head 100 around center bit main body axis A-A rotate and drill end 106 abut against stratum time, gear wheel 108 is with against landing
Layer does not have the rolling movement of shearing and rotates.Have be zero the example of offset distance e in, the rolling movement of gear wheel 108 promotees
Enter and be drilled in stratum, such as, be drilled in hard formation.
Gear wheel axis B-B is located relative to be perpendicular to center bit main body axis A-A and by the center of gear wheel 108
Plane becomes pin angle of inclination betacPlace.In the exemplary gear wheel 108 illustrated in figure 4b, sell angle of inclination betacIt is about 30 degree.Pin angle of inclination betacCan be
Different, such as, βcCan be the angle between 0 degree, 90 degree, 0 degree and 90 degree or another angle.
Referring back to Fig. 5, wheel disc axis C-C is transverse to the RADIAL of center bit main body axis A-A.Each wheel disc 112
Position on drill main body 102 can be measured by axis deviant S and wheel disc center offset L.Axis deviant S is wheel disc axle
Beeline between line C-C and center bit main body axis A-A.In other words, axis deviant S can be defined as wheel disc
Distance between axis C-C and the plane passing through center bit main body axis A-A, wherein said plane is parallel to wheel disc axis C-
C.Wheel disc center offset L be wheel disc 112 center with by center bit main body axis A-A and be parallel to axis deviant
Distance between the plane of S.Axis deviant S and wheel disc center offset L makes wheel disc 112 be oriented such that proper Mixed drilling bit
100 when rotating, and wheel disc axis C-C (directly or substantially) points to the direction of rotation of drill bit 100.Referring back to Fig. 3, wheel disc 112
Each have for each wheel disc 112 can be identical or different axis deviant S and wheel disc center offset L.In operation,
The probing end 106 of Mixed drilling bit 100 is against stratum, and Mixed drilling bit 100 rotates around center bit main body axis A-A, and often
Individual wheel disc 112 rotates around its wheel disc axis C-C so that the subset of the wheel disc cutter 126 on each wheel disc 112 contacts with stratum,
And the remainder of wheel disc cutter 126 does not contacts with stratum.Drill bit 100 rotates in drill main body axis A-A, wheel disc 112 around
Wheel disc axis C-C rotates, and wheel disc cutter 126 is contacting with stratum and departing from round between stratum.In some instances, with
This mode makes wheel disc cutter 126 round decrease the abrasion to wheel disc cutter 126 and extend the operation lifetime of wheel disc 112.
When Mixed drilling bit 100 around center bit main body axis A-A rotate and drill end 106 abut against stratum time, wheel disc 112 rotates also
And wheel disc cutter 126 abuts against stratum and shears.The shear action of the wheel disc cutter 126 on wheel disc 112 promotes to be drilled into firmly
In lithostratigraphy.
Wheel disc axis C-C is located relative to be perpendicular to center bit main body axis A-A and by the center of wheel disc 112
Plane becomes pin angle of inclination betadPlace.In the exemplary wheel disc 112 illustrated in Figure 4 A, sell angle of inclination betadIt is about 30 degree.Pin angle of inclination betadCan be
Different, such as, βdCan be the angle between 0 degree, 90 degree, 0 degree and 90 degree or another angle.
In some instances, gear wheel 108 and wheel disc 112 are fixed on drill main body 102 symmetrically so that Mixed drilling bit
100 keep balance during operation.In other instances, gear wheel 108 and wheel disc 112 are fixed on drill main body 102 asymmetrically
On.
Fig. 3 B illustrates the exemplary Mixed drilling bit profile 200 of the exemplary Mixed drilling bit 100 corresponding to Fig. 3 A.Exemplary mixed
Bench drill head contour 200 includes the shape cut by the Mixed drilling bit 100 of Fig. 3 A, thus illustrates transposition drill bit 100 in the plane
The cutting element of each association.In the example shown in Fig. 3 B, Mixed drilling bit profile 200 is by cutting teeth 120 He of gear wheel 108
The contour line 202 of the wheel disc cutter 126 of wheel disc 112 limits, and described contour line 202 projects the center through drill main body 102
On the vertical plane of drill main body axis A-A.
In the exemplary profile 200 shown in Fig. 3 A, the cutting teeth 120 on gear wheel 108 in profile 200 ratio by wheel disc
The contour line 202 that the wheel disc cutter 126 of 112 is formed prolongs and projects farther.Cutting teeth 120 guide wheel dise knife tool 126 so that cutting teeth
120 make stratum crushing during drilling.Cutting teeth 120 makes stratum crushing, so that broken formation cuttings and prominent top are with recessed
Cave is stayed in the earth formation, and wheel disc cutter 126 acts as scraping off broken formation cuttings and by being stayed by cutting teeth 120
Under prominent top and depression scrape off and substantially flattened in stratum so that trailing edge gear wheel can crush more level surface of stratum and/or
The surface of stratum making more level ruptures.In some instances, wheel disc cutter 126 contour line 202 formed is in profile 200
Prolong than the cutting teeth 120 on gear wheel 108 and project farther.In other instances, the many cutting teeths 120 on gear wheel 108 are at profile
Prolong than a part for the contour line 202 formed by wheel disc cutter 126 in 200 and project farther, and formed by wheel disc cutter 126
The remainder of contour line 202 prolongs than the remaining cutting teeth 120 on gear wheel 108 in profile 200 and projects farther.Real at some
In example, one or more cutting teeths prolong than one or more roulette profiles in profile and project farther, and roulette profile
Another subset prolong than other cutting teeths and project farther.Such as, the cutting teeth profiles comparable wheel disc cutter profile of the first gear wheel
Line prolongs and projects farther, and wheel disc cutter profile line obtains farther than the cutting teeth profile extension of the second gear wheel.
Contour line 202 alterable formed by the wheel disc cutter 126 of wheel disc 112.In some instances, contour line 202 can
Based on wheel disc axis side-play amount S, wheel disc center offset L, pin angle of inclination betadAnd/or another characteristic of wheel disc 112 and formed not
Same curve.In some instances, gear wheel 108 is shaped as substantially mating with the contour line 202 formed by wheel disc cutter 126.?
In some other example, contour line 202 is shaped as and the form fit of gear wheel 108.
Mixed drilling bit (the most exemplary Mixed drilling bit 100) can be configured to together with probing end abut against stratum in well
Rotate around center bit main body axis.The gear wheel arranged around probing end crushes stratum in substantially or completely spinning movement or makes
Formation fracture, and the wheel disc cutter on wheel disc in shear action wheel disc be configured to rotate in the case of scraping stratum.Tooth
The spinning movement of wheel includes that abutting against stratum rolls, and the shear action of wheel disc includes by making wheel disc rotate against landing surface
Make wheel disc cutter round.In some instances, gear wheel makes stratum crushing so that the wheel disc cutter of wheel disc is by broken formation cuttings
Scrape off.
It is fixed on symmetrically in the example on the probing end 106 of drill main body 102 at gear wheel 108 and wheel disc 112, gear wheel
The symmetry of 108 and the symmetry of wheel disc 112 promote the dynamic balance on Mixed drilling bit 100 and/or the energy balance.
In view of above-mentioned discussion, some aspect contains Mixed drilling bit, and described Mixed drilling bit includes limiting center bit body shaft
The drill main body of line, is in drill main body end and is rotatably coupled to the gear wheel of drill main body around gear wheel axis, with
And be in the end of drill main body and be rotatably connected to the wheel disc of drill main body around wheel disc axis.Gear wheel axis towards
Center bit main body axis extends.Described wheel disc axis by the central cross of described wheel disc in described center bit main body axis
RADIAL, and described wheel disc includes multiple wheel disc cutter.
Some aspect contains well system, and described well system includes well head, the drill string being connected to well head and is connected to bore
The Mixed drilling bit of post.Described Mixed drilling bit includes the drill main body limiting center bit main body axis, is in drill main body one end
Place and be rotatably coupled to the gear wheel of drill main body around gear wheel axis, and it is in the end of drill main body and around wheel
Disk axis is rotatably coupled to the wheel disc of drill main body.Gear wheel axis extends towards center bit main body axis, and wheel disc
Axis extends away from center bit main body axis.
Some aspect contains the method on stratum in cutting well.Described method includes making drill bit rotate in wellbore formation,
In spinning movement, use the gear wheel crushing stratum on drill bit or make formation fracture, and being configured at wheel disc in shear action
The wheel disc cutter on drill bit wheel disc is used to scrape off described stratum in the case of rotating.
Aspect mentioned above can include some in following characteristics, zero or whole.Mixed drilling bit includes being couple to bore
First arm of head main body, described first arm extends substantially along center bit main body axis and exceedes described drill main body end；
And it being couple to the second arm of drill main body, described second arm extends substantially along center bit main body axis and exceedes described brill
Head main body end.Described wheel disc is rotatably coupled to described first arm and described gear wheel is rotatably coupled to described second
Arm.Gear wheel axis intersects with center bit main body axis.Gear wheel axis is non-radial from center bit main body axis.Centre drill
Beeline between head main body axis and gear wheel axis is less than 9/16 inch.Gear wheel includes gear wheel main body and is arranged on described tooth
Multiple cutting teeths on wheel body.The cutting teeth of gear wheel includes the steel tooth with the grinding of stiff dough metal coating.On wheel disc
Multiple wheel disc cutters prolong than the multiple cutting teeths gear wheel from the end of drill main body and project farther.Multiple cutting teeths on gear wheel
Prolong than the multiple wheel disc cutters wheel disc from the end of drill main body and project farther.The position of wheel disc is by offset distance L and skew
Distance S determines.Described wheel disc includes the generally annular cutting row taking turns disc main body and arranging radially about wheel disc main body, and institute
State multiple wheel disc cutter to arrange along described generally annular cutting row.Each wheel disc cutter in multiple wheel disc cutters includes having
By the cylindrical tool body of the tool axis at cylindrical tool body center and be in described cylinder-shaped body end
Flat tool face.Tool axis is transverse to the RADIAL at the center from the center of wheel disc to cylindrical tool body.Mixing is bored
Head includes multiple gear wheel and multiple wheel disc.Each wheel disc in the plurality of wheel disc has different from center bit main body axis
Wheel disc axis side-play amount S and different wheel disc center offset L.Each wheel disc axis in the plurality of wheel disc is in from center
At the angle beta that drill main body axis is different, wherein angle beta is the corresponding rotation axis angle from center drill main body axis.?
Spinning movement uses gear wheel crushing stratum or makes formation fracture include using gear wheel to make stratum crushing, and gear wheel is than wheel disc
Wheel disc cutter deeper enters stratum.Use the wheel disc cutter on wheel disc to scrape off stratum in shear action and include scraping off broken
Formation cuttings.Use the wheel disc cutter on drill bit wheel disc to scrape off stratum in shear action to include making wheel coiling wheel disc axis rotation
Turn so that wheel disc cutter is around wheel disc axis round.
Have been described for multiple embodiment.However, it should be understood that and can make various amendment.Therefore, other embodiments are all located
In the scope of the appended claims.
Claims (19)
1. a Mixed drilling bit, comprising:
Drill main body, described drill main body limits center bit main body axis；
Gear wheel, described gear wheel is in the end of described drill main body and is rotatably coupled to described drill bit master around gear wheel axis
Body, described gear wheel axis extends towards described center bit main body axis；And
Wheel disc, described wheel disc is in the described end of described drill main body and is rotatably coupled to described brill around wheel disc axis
Head main body；
Wherein said wheel disc axis by the central cross of described wheel disc in the RADIAL of described center bit main body axis；And
Wherein said wheel disc includes multiple wheel disc cutter.
2. Mixed drilling bit as claimed in claim 1, it also includes:
Being couple to the first arm of described drill main body, described first arm extends substantially along described center bit main body axis and surpasses
Crossing the described end of described drill main body, wherein said wheel disc is rotatably coupled to described first arm；And
Being couple to the second arm of described drill main body, described second arm extends substantially along described center bit main body axis and surpasses
Crossing the described end of described drill main body, wherein said gear wheel is rotatably coupled to described second arm.
3. Mixed drilling bit as claimed in claim 1, wherein said gear wheel axis intersects with described center bit main body axis.
4. Mixed drilling bit as claimed in claim 1, wherein said gear wheel axis is non-footpath from described center bit main body axis
To.
5. Mixed drilling bit as claimed in claim 4, between wherein said center bit main body axis and described gear wheel axis
Beeline is less than 9/16 inch.
6. Mixed drilling bit as claimed in claim 1, wherein said gear wheel includes gear wheel main body and is arranged on described gear wheel main body
On multiple cutting teeths.
7. Mixed drilling bit as claimed in claim 6, the described cutting teeth of wherein said gear wheel includes having stiff dough metal coating
The steel tooth of grinding.
8. Mixed drilling bit as claimed in claim 6, the plurality of wheel disc cutter on wherein said wheel disc is from described drill bit master
The described end of body is prolonged than the plurality of cutting teeth on described gear wheel and is projected farther.
9. Mixed drilling bit as claimed in claim 6, the plurality of cutting teeth on wherein said gear wheel is from described drill main body
Described end prolong than the plurality of wheel disc cutter on described wheel disc and project farther.
10. Mixed drilling bit as claimed in claim 1, wherein said wheel disc includes taking turns disc main body and taking turns disc main body radially around described
The generally annular cutting row arranged；And
Wherein said multiple wheel disc cutter is arranged along described generally annular cutting row.
11. Mixed drilling bits as claimed in claim 10, each wheel disc cutter in wherein said multiple wheel disc cutters includes tool
There is the cylindrical tool body of the tool axis by cylindrical tool body center and be in described cylinder-shaped body end
The flat tool face at place；And
Wherein said tool axis is transverse to the described center from the described center of described wheel disc to described cylindrical tool body
RADIAL.
12. Mixed drilling bits as claimed in claim 1, it includes multiple gear wheel and multiple wheel disc.
13. Mixed drilling bits as claimed in claim 12, each wheel disc in wherein said multiple wheel discs has and described center
Wheel disc axis side-play amount S that drill main body axis is different and different wheel disc center offset L；And
Each wheel disc axis in wherein said multiple wheel disc is at the angle beta that described center bit main body axis is different,
Wherein said angle beta is the described corresponding rotation axis angle away from described center bit main body axis.
14. 1 kinds of well systems, comprising:
Well head；
Drill string, described drill string is connected to described well head；
Being connected to the Mixed drilling bit of described drill string, described Mixed drilling bit includes:
Drill main body, described drill main body limits center bit main body axis；
Gear wheel, described gear wheel is in the end of described drill main body and is rotatably coupled to described drill bit master around gear wheel axis
Body, described gear wheel axis extends towards described center bit main body axis；And
Wheel disc, described wheel disc is in the end of described drill main body and is rotatably coupled to described drill bit master around wheel disc axis
Body, described wheel disc axis extends away from described center bit main body axis.
15. well systems as claimed in claim 14, wherein said Mixed drilling bit also includes:
Being couple to the first arm of described drill main body, described first arm extends substantially along described center bit main body axis and surpasses
Crossing the described end of described drill main body, wherein said wheel disc is rotatably coupled to described first arm；And
Being couple to the second arm of described drill main body, described second arm extends substantially along described center bit main body axis and surpasses
Crossing the described end of described drill main body, wherein said gear wheel is rotatably coupled to described second arm.
16. well systems as claimed in claim 14, wherein said gear wheel includes gear wheel main body and is arranged on described gear wheel master
Multiple cutting teeths on body；
Wherein said wheel disc includes taking turns disc main body and taking turns, around described, the generally annular cutting row that disc main body is radially arranged；And
Wherein said generally annular cutting package includes the multiple wheel disc cutters arranged along described cutting row.
17. 1 kinds are cut the method on stratum in well, and described method includes:
Bit is made in wellbore formation；
The gear wheel on described drill bit is used to crush described stratum or make described formation fracture in spinning movement；And
The wheel disc cutter on described drill bit wheel disc is used to scrape in the case of described wheel disc is configured to rotate in shear action
Go to described stratum.
18. methods as claimed in claim 17, wherein use gear wheel crush described stratum or make describedly in spinning movement
Layer ruptures and includes using described gear wheel to make described stratum crushing, and wherein said gear wheel is more deeper than the described wheel disc cutter of described wheel disc
Ground enters described stratum；And
Wherein use the wheel disc cutter on wheel disc to scrape off described stratum in shear action to include scraping off broken formation cuttings.
19. methods as claimed in claim 17, wherein use the wheel disc cutter on described drill bit wheel disc to scrape in shear action
Described stratum is gone to include making described coiling wheel disc axis of taking turns rotate so that described wheel disc cutter is around described wheel disc axis round.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2014/041564 WO2015191028A1 (en) | 2014-06-09 | 2014-06-09 | Hybrid bit with roller cones and discs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106255797A true CN106255797A (en) | 2016-12-21 |
Family
ID=54833983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480078400.2A Pending CN106255797A (en) | 2014-06-09 | 2014-06-09 | There is the Mixed drilling bit of gear wheel and wheel disc |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20170081919A1 (en) |
| CN (1) | CN106255797A (en) |
| WO (1) | WO2015191028A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968595A (en) * | 2017-04-27 | 2017-07-21 | 刘哲岳 | Impact type continuously engages the multi-faceted efficient Mixed drilling bit of cutting |
| CN109854178A (en) * | 2019-03-27 | 2019-06-07 | 山东易斯特工程工具有限公司 | A kind of rotary drilling rig rolling cutter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10995557B2 (en) * | 2017-11-08 | 2021-05-04 | Halliburton Energy Services, Inc. | Method of manufacturing and designing a hybrid drill bit |
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| WO1985002223A1 (en) * | 1983-11-18 | 1985-05-23 | Rock Bit Industries U.S.A., Inc. | Hybrid rock bit |
| SU1712573A1 (en) * | 1988-08-23 | 1992-02-15 | Smirnov Vyacheslav G | Expandable drilling bit |
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| CA2760286A1 (en) * | 2009-04-28 | 2010-11-11 | Baker Hughes Incorporated | Adaptive control concept for hybrid pdc/roller cone bits |
| CN102747960A (en) * | 2012-07-11 | 2012-10-24 | 江汉石油钻头股份有限公司 | Hybrid drill bit |
| CN103089154A (en) * | 2013-02-28 | 2013-05-08 | 西南石油大学 | Composite drill bit |
| WO2013169819A1 (en) * | 2012-05-07 | 2013-11-14 | Ulterra Drilling Technologies, L.P. | Fixed cutter drill bit with rotating cutter disc |
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| US7841426B2 (en) * | 2007-04-05 | 2010-11-30 | Baker Hughes Incorporated | Hybrid drill bit with fixed cutters as the sole cutting elements in the axial center of the drill bit |
| US20100155146A1 (en) * | 2008-12-19 | 2010-06-24 | Baker Hughes Incorporated | Hybrid drill bit with high pilot-to-journal diameter ratio |
| WO2011084944A2 (en) * | 2010-01-05 | 2011-07-14 | Smith International, Inc. | High-shear roller cone and pdc hybrid bit |
| CN101886522B (en) * | 2010-07-16 | 2012-07-25 | 西南石油大学 | Wheel-type drill for breaking rock in cutting mode |
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2014
- 2014-06-09 WO PCT/US2014/041564 patent/WO2015191028A1/en active Application Filing
- 2014-06-09 CN CN201480078400.2A patent/CN106255797A/en active Pending
- 2014-06-09 US US15/309,388 patent/US20170081919A1/en not_active Abandoned
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985002223A1 (en) * | 1983-11-18 | 1985-05-23 | Rock Bit Industries U.S.A., Inc. | Hybrid rock bit |
| SU1712573A1 (en) * | 1988-08-23 | 1992-02-15 | Smirnov Vyacheslav G | Expandable drilling bit |
| CN1071223A (en) * | 1991-09-27 | 1993-04-21 | 罗维斯公司 | Disc drill bit |
| CA2760286A1 (en) * | 2009-04-28 | 2010-11-11 | Baker Hughes Incorporated | Adaptive control concept for hybrid pdc/roller cone bits |
| WO2013169819A1 (en) * | 2012-05-07 | 2013-11-14 | Ulterra Drilling Technologies, L.P. | Fixed cutter drill bit with rotating cutter disc |
| CN102747960A (en) * | 2012-07-11 | 2012-10-24 | 江汉石油钻头股份有限公司 | Hybrid drill bit |
| CN103089154A (en) * | 2013-02-28 | 2013-05-08 | 西南石油大学 | Composite drill bit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106968595A (en) * | 2017-04-27 | 2017-07-21 | 刘哲岳 | Impact type continuously engages the multi-faceted efficient Mixed drilling bit of cutting |
| CN106968595B (en) * | 2017-04-27 | 2019-04-26 | 刘哲岳 | Impact type continuously engages the multi-faceted efficient Mixed drilling bit of cutting |
| CN109854178A (en) * | 2019-03-27 | 2019-06-07 | 山东易斯特工程工具有限公司 | A kind of rotary drilling rig rolling cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015191028A1 (en) | 2015-12-17 |
| US20170081919A1 (en) | 2017-03-23 |
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