CN109611030B - Chip space type variable flow jet flow drill - Google Patents
Chip space type variable flow jet flow drill Download PDFInfo
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- CN109611030B CN109611030B CN201811432649.5A CN201811432649A CN109611030B CN 109611030 B CN109611030 B CN 109611030B CN 201811432649 A CN201811432649 A CN 201811432649A CN 109611030 B CN109611030 B CN 109611030B
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- Prior art keywords
- chip space
- ontology
- type variable
- piston rod
- sealing plate
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- 230000007246 mechanism Effects 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 239000011435 rock Substances 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims abstract description 10
- 239000007921 spray Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 39
- 230000000694 effects Effects 0.000 abstract description 11
- 239000012530 fluid Substances 0.000 description 29
- 239000004615 ingredient Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
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
The invention discloses a kind of chip space type variable flow jet flow drills, it is related to oil gas well drilling field, comprising: the ontology extended along axis, ontology has runner, ontology has cutting mechanism, cutting mechanism has the first jet nozzle being connected with runner for cutting rock at the lower end of ontology, the first jet nozzle is used for the cutting grain for carrying out jet stream to shaft bottom and rinsing cutting mechanism generation；There is the chip space extended in the axial direction on the side wall of ontology, the groove of accommodating sealing plate is offered on the side wall of the chip space of ontology, radially there is the first passage of connection runner and groove in ontology, the telescoping mechanism being mutually driven with sealing plate is provided in first passage, telescoping mechanism runner it is hydraulic under the action of sealing plate can be driven to be moved in radial directions so that chip space have block and unobstructed two states.The application can be changed the state of chip space according to the working condition of drill bit, to improve the using effect of flow jet flow drill.
Description
Technical field
The present invention relates to oil gas well drilling field, in particular to a kind of chip space type variable flow jet flow drill.
Background technique
With deepening continuously for unconventional petroleum resources exploitation, the ratio of the related complex structural well based on horizontal well
It rises year by year.Horizontal well has taking during drilling well that rock is difficult, is not easy plus bit pressure, at the same bulky grain landwaste due to
Gravity is easy to form cutting bed in net horizontal section, is so likely to cause the underground thing for suppressing a series of complex such as pump, bit freezing
Therefore.
Problem above not only restricts the raising of rate of penetration and drilling efficiency, has an effect on the safety of drilling well.In order to disappear
The drilling speed of the problem of except horizontal well cutting bed and well of improving the standard, generally use in practical applications increase drilling fluid return speed,
Improve the methods of property of drilling fluid, short trip, reaming.Although the above method has the effect of certain, all drilling well is set
Standby, formation condition, drilling cost etc. have corresponding requirement, therefore have certain limitation.
Summary of the invention
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide one kind for the embodiment of the present invention
Chip space type variable flow jet flow drill can be changed the state of chip space according to the working condition of drill bit, be penetrated with improving
Flow the using effect of drill bit.
The specific technical solution of the embodiment of the present invention is:
A kind of chip space type variable flow jet flow drill, the chip space type variable flow jet flow drill include:
The ontology extended along axis, the ontology have runner in the axial direction, and the lower end of the ontology has cutter
Structure, the cutting mechanism have first to be connected with the runner for cutting rock at the lower end of the ontology
Jet nozzle, first jet nozzle are used to carry out shaft bottom jet stream and rinse the cutting grain that the cutting mechanism generates；
There is a plurality of chip space extended along the axis direction on the side wall of the ontology, opened on the side wall of the chip space of the ontology
Radially have the first of the connection runner and the groove to lead to equipped with the groove for accommodating sealing plate, in the ontology
Road is provided with the telescoping mechanism being mutually driven with the sealing plate in the first passage, and the telescoping mechanism is in the hydraulic of runner
Under the action of the sealing plate can be driven to be moved in radial directions so that the chip space have block and unobstructed two
Kind state.
In a preferred embodiment, plunger shaft is formed in the first passage, the telescoping mechanism setting exists
In the plunger shaft, the telescoping mechanism includes piston rod, piston and spring, and the piston rod is radially arranged, described
One end of piston rod connects the sealing plate, and the other end of the piston rod connects the piston, and the piston is far from the work
One end of stopper rod and the plunger shaft are provided with the spring between one end far from the piston rod, the spring is to stretch bullet
Spring.
In a preferred embodiment, plunger shaft is formed in the first passage, the telescoping mechanism setting exists
In the plunger shaft, the telescoping mechanism includes piston rod, piston and spring, and the piston rod is radially arranged, described
One end of piston rod connects the sealing plate, and the other end of the piston rod connects the piston, and the piston is close to the work
One end of stopper rod and the plunger shaft are provided with the spring between one end of the piston rod, and the spring is compression bullet
Spring.
In a preferred embodiment, the chip space is multiple, and the chip space circumferentially divides around the axis
Cloth；The quantity of the sealing plate, the first passage and the telescoping mechanism is corresponding with the chip space, the sealing plate,
The first passage and the telescoping mechanism are circumferentially distributed around the axis.
In a preferred embodiment, have between first jet nozzle and the runner and shunt cavity, it is more
A first jet nozzle is connected with cavity is shunted.
In a preferred embodiment, the second channel and third for landwaste sucking are offered in the ontology
Channel, one end of the third channel connect the shunting cavity, and the third channel intersects with the second channel, and described the
Triple channel and the second channel crosspoint are provided with the second jet nozzle between the shunting cavity.
In a preferred embodiment, second jet nozzle can generate a negative pressuren zone, the second channel
One end is connected at the negative pressuren zone, at the other end connection drill bit lower end of the second channel.
It in a preferred embodiment, include being sequentially connected the mixing accelerating sections connect, crushing in the third channel
Section and outlet diffusor have default angle between the mixing accelerating sections and the crushing section.
In a preferred embodiment, the outlet diffusor is in horn-like, and the default angle is at 100 ° to 170 °
Between.
In a preferred embodiment, the outlet diffusor is located at the side of the ontology, the outlet diffusor court
To the caudal directions of drill bit.
Technical solution of the present invention have it is following significant the utility model has the advantages that
For chip space type variable flow jet flow drill in the application when in running order, i.e., drill bit is in cutting fractured rock
When, for drilling fluid by the runner in ontology to convey to the first jet nozzle, the first jet nozzle carries out jet stream to shaft bottom, from
And cutting grain is rinsed and carries away, so facilitate the cutting crushing effect of ontology cutting mechanism.Pass through runner in drilling fluid
When, drilling fluid presses to telescoping mechanism by first passage so that telescoping mechanism runner it is hydraulic under the action of
The sealing plate is driven to be displaced outwardly in radial directions, so that sealing plate blocks the chip space on this body sidewall
Sealing, the i.e. side wall of ontology and well are equivalent to no chip space, sealing state are between the side wall and oil well side wall of ontology, such as
This, on the one hand can prevent the drilling fluid on drill bit top from flowing back into shaft bottom, on the other hand since negative-pressure ward can be effective
The pressure of drill bit lower end is reduced, the chip hold down effect to bottom rock is reduced.When chip space type variable flow jet flow drill is in inoperative
When state, since the drilling fluid of high pressure being not present in runner, sealing plate can be in radial directions under the action of telescoping mechanism
It withdraws, is hidden in the groove of drill body, to reserve enough chip spaces, i.e., so that chip space is in axis direction is mobile
Unobstructed state, thus can prevent in trip-out or going down process on the way borehole wall landwaste accumulated in drill bit afterbody or head, guarantee
The safety of trip-out or going down process.
Referring to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies original of the invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, embodiments of the present invention include many changes, modifications and are equal.For a kind of reality
The feature that the mode of applying is described and/or shown can be made in one or more other embodiments in a manner of same or similar
With, be combined with the feature in other embodiment, or substitution other embodiment in feature.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, shape and proportional sizes of each component in figure etc. are only schematical, it is used to help the understanding of the present invention, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 is the front view of chip space type variable flow jet flow drill in the embodiment of the present invention；
Fig. 2 is the bottom view of chip space type variable flow jet flow drill in the embodiment of the present invention；
Fig. 3 is the top view of chip space type variable flow jet flow drill in the embodiment of the present invention；
Fig. 4 is the sectional view in Fig. 3 at A-A；
Fig. 5 is the sectional view in Fig. 1 at B-B in the first embodiment；
Fig. 6 is the sectional view in Fig. 1 at B-B in the second embodiment.
The appended drawing reference of the figures above:
1, ontology；2, runner；3, cutting mechanism；31, wing；32, cutting tooth；33, recessed groove；4, the first jet nozzle；
5, chip space；6, groove；7, sealing plate；8, telescoping mechanism；81, piston rod；82, piston；83, spring；9, first passage；91,
Plunger shaft；10, cavity is shunted；11, second channel；12, third channel；121, accelerating sections is mixed；122, section is crushed；123, it spreads
Outlet；13, the second jet nozzle；14, bit adapter portion.
Specific embodiment
With reference to the drawings and the description of the specific embodiments of the present invention, details of the invention can clearly be understood.But
It is the specific embodiment of invention described herein, purpose for explaining only the invention, and cannot understand in any way
At being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that based on any possible change of the invention
Shape, these are regarded as belonging to the scope of the present invention.It should be noted that when element is referred to as " being set to " another yuan
Part, it can directly on the other element or there may also be elements placed in the middle.When an element is considered as " connection "
Another element, it can be directly to another element or may be simultaneously present centering elements.Term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, are also possible to inside two elements
Connection, can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art,
The concrete meaning of above-mentioned term can be understood as the case may be.Term as used herein " vertical ", " horizontal ",
"upper", "lower", "left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more
Any and all combinations of relevant listed item.
In order to be changed according to state of the working condition of drill bit to chip space, to improve the use of flow jet flow drill
Effect, proposes a kind of chip space type variable flow jet flow drill in this application, and Fig. 1 is chip space type variable in the embodiment of the present invention
The front view of flow jet flow drill, Fig. 4 are the sectional view in Fig. 3 at A-A, as shown in Figure 1 and Figure 4, chip space type variable flow jet flow drill
It may include: the ontology 1 extended along axis, ontology 1 has runner 2 in the axial direction, and the lower end of ontology 1 has cutting mechanism 3,
Cutting mechanism 3 has the first jet nozzle 4 being connected with runner 2 for cutting rock at the lower end of ontology 1, the
One jet nozzle 4 is used for the cutting grain for carrying out jet stream to shaft bottom and rinsing the generation of cutting mechanism 3；Have on the side wall of ontology 1
The a plurality of chip space 5 extended in the axial direction offers the groove 6 of accommodating sealing plate 7 on the side wall of the chip space 5 of ontology 1, this
Radially there is the first passage 9 of connection runner 2 and groove 6 in body 1, be provided in first passage 9 and passed on from one to another with sealing plate 7
Dynamic telescoping mechanism 8, telescoping mechanism 8 runner 2 it is hydraulic under the action of sealing plate 7 can be driven to be moved in radial directions
It is dynamic, it is blocked and unobstructed two states so that chip space 5 has.
For chip space type variable flow jet flow drill in the application when in running order, i.e., drill bit is in cutting fractured rock
When, for drilling fluid by the runner 2 in ontology 1 to convey to the first jet nozzle 4, the first jet nozzle 4 penetrates shaft bottom
Stream, to rinse and carry away cutting grain, so facilitates the cutting crushing effect of 1 cutting mechanism 3 of ontology.It is logical in drilling fluid
When crossing runner 2, drilling fluid presses to telescoping mechanism 8 by first passage 9, so that liquid of the telescoping mechanism 8 in runner 2
Sealing plate 7 is driven to be displaced outwardly in radial directions under the action of pressure, so that sealing plate 7 is to the chip removal on 1 side wall of ontology
Slot 5 carries out blocking sealing, i.e. the side wall of ontology 1 and well is equivalent to no chip space 5, between the side wall and oil well side wall of ontology 1
In sealing state, in this way, on the one hand the drilling fluid on drill bit top can be prevented from flowing back into shaft bottom, on the other hand due to negative pressure
The pressure of drill bit lower end can be effectively reduced in suction, reduces the chip hold down effect to bottom rock.When chip space type variable jet stream bores
When head is in off working state, since the drilling fluid of high pressure, 7 energy of sealing plate under the action of telescoping mechanism 8 being not present in runner 2
It is enough to be withdrawn in radial directions to axis direction is mobile, it is hidden in the groove 6 of drill body 1, to reserve enough chip spaces
5, i.e., so that chip space 5 is in unobstructed state, therefore can prevent in trip-out or going down process on the way borehole wall landwaste in drill bit
Tail portion or head accumulation, guarantee the safety of trip-out or going down process.
In order to better understand the chip space type variable flow jet flow drill in the application, further solution will be done to it below
It releases and illustrates.As shown in Figure 1, the ontology 1 of chip space type variable flow jet flow drill extends in the axial direction, the upper end of ontology 1 is to bore
Head connector portions 14 can be the threaded interface of tool, for being connected with other components.The lower end of ontology 1 is provided with
Cutting mechanism 3, cutting mechanism 3 is for cutting rock.
Fig. 2 is the bottom view of chip space type variable flow jet flow drill in the embodiment of the present invention, as shown in Fig. 2, cutting mechanism 3 can
To include: the wing 31 extended spirally outward by axis centre；Cutting tooth 32 on wing 31 is set.Wing 31 can be more
Root is circumferentially distributed around axis, has recessed groove 33 between adjacent blades 31.Cutting tooth 32 on wing 31 turns towards drill bit
Dynamic direction.
As shown in Figures 2 and 3, ontology 1 has runner 2 in the axial direction, and runner 2 is connected with the upper surface of ontology 1.This
There is the first jet nozzle 4 being connected with runner 2, the first jet nozzle 4 may be mounted between wing 31 at the lower end of body 1
Recessed groove 33 at.First jet nozzle 4 can be mounted on first at the recessed groove 33 between adjacent blades 31 and penetrate to be multiple
Flow nozzle 4.Have between first jet nozzle 4 and runner 2 and shunts cavity 10, multiple first jet nozzles 4 and shunting cavity 10
It is connected, so that the first jet nozzle 4 is connected with runner 2.When being passed through cleaner for high-pressure drilling fluid in runner 2, the first jet stream
Nozzle 4 is used for the cutting grain for carrying out jet stream to shaft bottom and rinsing the generation of cutting mechanism 3.
As shown in Figure 1 and Figure 4, there is a plurality of chip space 5 extended in the axial direction, chip space 5 on the side wall of ontology 1
Certain spiral trend can be had.Chip space 5 can be to be multiple, and chip space 5 is circumferentially distributed around axis.The chip removal of ontology 1
The groove 6 that accommodating sealing plate 7 is offered on the side wall of slot 5 radially has the of connection runner 2 and groove 6 in ontology 1
One channel 9 is provided with the telescoping mechanism 8 with the transmission of 7 phase of sealing plate in first passage 9.Sealing plate 7, first passage 9 and telescopic machine
The quantity of structure 8 is corresponding with chip space 5, and sealing plate 7, first passage 9 and telescoping mechanism 8 are circumferentially distributed around axis.Telescopic machine
Structure 8 in runner 2 drilling fluid it is hydraulic under the action of sealing plate 7 can be driven to be moved in radial directions, and then seal
Plate 7 blocks chip space 5, blocks and unobstructed two states so that chip space 5 has.
Fig. 5 is the sectional view in Fig. 1 at B-B in the first embodiment, as shown in figure 5, being formed in first passage 9
Plunger shaft 91, telescoping mechanism 8 are arranged in plunger shaft 91, and telescoping mechanism 8 includes piston rod 81, piston 82 and spring 83, piston
Bar 81 is radially arranged, and one end of piston rod 81 connects sealing plate 7, and the other end of piston rod 81 connects piston 82, piston
Spring 83 is provided between 82 one end of one end and plunger shaft 91 far from piston rod 81 far from piston rod 81, spring 83 is to stretch
Spring 83.When chip space type variable flow jet flow drill is in running order, drilling fluid can be squeezed into the runner 2 of ontology 1, bored
When well liquid passes through runner 2, drilling fluid presses to telescoping mechanism 8 by first passage 9, and the spring 83 in telescoping mechanism 8 is former
This is in normal contraction state, and sealing plate 7 is contracted in groove 6, and the piston 82 in telescoping mechanism 8 is outside by drilling fluid
Pressure after, piston 82 stretches spring 83, at the same piston 82 push piston rod 81 move out so that piston rod 81 pushes away
Dynamic sealing plate 7 removes in groove 6, in this way, blocking sealing plate 7 by chip space 5.When chip space type variable flow jet flow drill is in
When off working state, since the drilling fluid of high pressure being not present in runner 2, spring 83 is shunk, and piston 82, piston rod 81 are to axis side
To movement, finally make piston rod 81 that the contraction of sealing plate 7 be pushed to move into groove 6.
Fig. 6 is the sectional view in Fig. 1 at B-B in the second embodiment, as shown in fig. 6, being formed in first passage 9
Plunger shaft 91, telescoping mechanism 8 are arranged in plunger shaft 91, and telescoping mechanism 8 includes piston rod 81, piston 82 and spring 83, piston
Bar 81 is radially arranged, and one end of piston rod 81 connects sealing plate 7, and the other end of piston rod 81 connects piston 82, piston
82 are provided with spring 83 close to one end of piston rod 81 and plunger shaft 91 between one end of piston rod 81, and spring 83 is compression
Spring 83.When chip space type variable flow jet flow drill is in running order, drilling fluid can be squeezed into the runner 2 of ontology 1, bored
When well liquid passes through runner 2, drilling fluid presses to telescoping mechanism 8 by first passage 9, and the spring 83 in telescoping mechanism 8 is former
This is in normal tensional state, and sealing plate 7 is contracted in groove 6, and the piston 82 in telescoping mechanism 8 is outside by drilling fluid
Pressure after, piston 82 compresses spring 83, at the same piston 82 push piston rod 81 move out so that piston rod 81 pushes away
Dynamic sealing plate 7 removes in groove 6, in this way, blocking sealing plate 7 by chip space 5.When chip space type variable flow jet flow drill is in
When off working state, since the drilling fluid of high pressure being not present in runner 2, spring 83 opens, and piston 82, piston rod 81 are to axis side
To movement, finally make piston rod 81 that the contraction of sealing plate 7 be pushed to move into groove 6.
As shown in figure 4, offering the second channel 11 and third channel 12 for landwaste sucking in ontology 1, third is logical
One end connection in road 12 shunts cavity 10, and third channel 12 intersects with second channel 11, third channel 12 and 11 phase of second channel
Intersection point is provided with the second jet nozzle 13 between shunting cavity 10.The lower end of second channel 11 is landwaste suction inlet, the landwaste
Suction inlet is connected at drill bit lower end in the recessed groove 33 between adjacent blades 31, so facilitates the sucking of landwaste.The
Two channels 11 substantially extend in the axial direction, are located at the outside of ontology 1.Third channel 12 is substantially from shunting cavity 10 to ontology
The upper extreme direction of 1 side wall extends, and third channel 12 and second channel 11 are in crosspoint to the third between the second jet nozzle 13
The angle of channel 12 and second channel 11 is between 0 degree to 90 degree.Preferably, the degree of the angle is the smaller the better, due to
Second jet nozzle 13 can generate a negative pressuren zone, and one end of second channel 11 is connected at the negative pressuren zone, when the degree of angle
When smaller, the swabbing action that negative pressuren zone generates generates suction to shaft bottom drilling fluid, reduces bottom pressure, and from second channel 11
Landwaste suction inlet sucks the drilling fluid of cutting carring, and the drilling fluid of cutting carring can also be accelerated in second channel 11.
By said mechanism, the pressure of shaft bottom drill bit lower end can be reduced, reduces the chip hold down effect of bottom rock, accelerates shaft bottom landwaste
On return, create the insufficient balance condition in shaft bottom, thus realize improve drilling speed purpose.
As shown in figure 4, including being sequentially connected the mixing accelerating sections 121 connect, crushing section 122 and diffuse out in third channel 12
Mouth 123, mixing accelerating sections 121 and crushing between section 122 has default angle.In general, the predetermined angle can choose
Between 100 ° to 170 °, preferably 160 degree.Above-mentioned outlet diffusor 123 is located at the side of ontology 1, outlet diffusor in horn-like
123 towards drill bit caudal directions.The drilling fluid of the cutting carring sucked from the landwaste suction inlet of second channel 11 is penetrated with second
The drilling fluid that flow nozzle 13 sprays is mixed in mixing accelerating sections 121, and is further speeded up.Due to mixing accelerating sections
It 121 and crushes there is default angle between section 122, it, can be with after the drilling fluid of cutting carring accelerates by mixing accelerating sections 121
It is impinged upon on the side wall crushed at section 122 at high speed, realizes the smashing to rock, rock using instant impact and water wedge effect
Bits particle is finally discharged by outlet diffusor 123 after second-time breakage.By the above-mentioned means, chip space type variable flow jet flow drill can
To realize the secondary smashing of cutting grain, reduce the partial size of cutting grain, so that effectively increasing drilling fluid takes rock efficiency, from basic
On avoid the formation of horizontal well cutting bed, guarantee the safe and efficient of drilling well.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.Multiple element, ingredient, component or step can be mentioned by single integrated component, ingredient, component or step
For.Alternatively, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation
Suddenly.For describe the open "a" or "an" of element, ingredient, component or step do not say in order to exclude other elements, at
Point, component or step.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.Above-described embodiment is only
Illustrate technical concepts and features of the invention, its object is to those skilled in the art can understand the contents of the present invention
And implement accordingly, it is not intended to limit the scope of the present invention.Equivalence changes made by all Spirit Essences according to the present invention
Or modification, it should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of chip space type variable flow jet flow drill, which is characterized in that the chip space type variable flow jet flow drill includes:
The ontology extended along axis, the ontology have runner in the axial direction, and the lower end of the ontology has cutting mechanism, institute
Cutting mechanism is stated for cutting rock, there is the first jet stream spray being connected with the runner at the lower end of the ontology
Mouth, first jet nozzle are used to carry out shaft bottom jet stream and rinse the cutting grain that the cutting mechanism generates；Described
There is a plurality of chip space extended along the axis direction on the side wall of body, offer appearance on the side wall of the chip space of the ontology
The groove of sealing plate is set, radially there is the first passage for being connected to the runner and the groove in the ontology, it is described
Be provided with the telescoping mechanism being mutually driven with the sealing plate in first passage, the telescoping mechanism runner it is hydraulic under the action of
The sealing plate can be driven to be moved in radial directions, blocked and unobstructed two states so that the chip space has.
2. chip space type variable flow jet flow drill according to claim 1, which is characterized in that be formed in the first passage
Plunger shaft, the telescoping mechanism are arranged in the plunger shaft, and the telescoping mechanism includes piston rod, piston and spring, described
Piston rod is radially arranged, and one end of the piston rod connects the sealing plate, and the other end of the piston rod connects institute
Piston is stated, the piston is provided between the one end of one end and the plunger shaft far from the piston rod far from the piston rod
The spring, the spring are extension spring.
3. chip space type variable flow jet flow drill according to claim 1, which is characterized in that be formed in the first passage
Plunger shaft, the telescoping mechanism are arranged in the plunger shaft, and the telescoping mechanism includes piston rod, piston and spring, described
Piston rod is radially arranged, and one end of the piston rod connects the sealing plate, and the other end of the piston rod connects institute
Piston is stated, the piston is provided between one end of the piston rod close to one end of the piston rod and the plunger shaft
The spring, the spring are compressed spring.
4. chip space type variable flow jet flow drill according to claim 1, which is characterized in that the chip space is multiple, institute
Chip space is stated circumferentially to be distributed around the axis；The sealing plate, the quantity of the first passage and the telescoping mechanism and institute
It is corresponding to state chip space, the sealing plate, the first passage and the telescoping mechanism are circumferentially distributed rotating around the axis.
5. chip space type variable flow jet flow drill according to claim 1, which is characterized in that first jet nozzle and institute
It states to have between runner and shunts cavity, multiple first jet nozzles are connected with the shunting cavity.
6. chip space type variable flow jet flow drill according to claim 5, which is characterized in that offer and be used in the ontology
The second channel and third channel of landwaste sucking, one end of the third channel connect the shunting cavity, and the third is logical
Road intersects with the second channel, and the third channel and the second channel crosspoint are provided between the shunting cavity
Second jet nozzle.
7. chip space type variable flow jet flow drill according to claim 6, which is characterized in that second jet nozzle can produce
A raw negative pressuren zone, one end of the second channel are connected at the negative pressuren zone, and the other end of the second channel is connected to drill bit
At lower end.
8. chip space type variable flow jet flow drill according to claim 6, which is characterized in that include in the third channel according to
The secondary mixing accelerating sections being connected crushes section and outlet diffusor, has between the mixing accelerating sections and the crushing section default
Angle.
9. chip space type variable flow jet flow drill according to claim 8, which is characterized in that the outlet diffusor is in loudspeaker
Shape, the default angle is between 100 ° to 170 °.
10. chip space type variable flow jet flow drill according to claim 8, which is characterized in that the outlet diffusor is located at institute
State the side of ontology, caudal directions of the outlet diffusor towards drill bit.
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| US20230147209A1 (en) * | 2019-07-24 | 2023-05-11 | Herrenknecht Ag | Drill head and method for producing a vertical borehole in the ground |
| US20210180408A1 (en) * | 2019-12-17 | 2021-06-17 | Ulterra Drilling Technologies, L.P. | Drill bit with auxiliary channel openings |
| CN113107373B (en) * | 2021-04-21 | 2022-04-08 | 西南石油大学 | Streamlined PDC drill bit capable of improving rock carrying capacity and design method thereof |
| CN113404435B (en) * | 2021-07-12 | 2022-04-12 | 潍坊盛德石油机械制造有限公司 | Eccentric drill bit and drilling equipment |
| CN115596360B (en) * | 2022-12-14 | 2023-02-28 | 陕西晖煌建筑劳务有限公司 | Bridge underwater pile foundation drilling device |
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| CN109611030A (en) | 2019-04-12 |
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