CN109505521A - A kind of combined drill of three wings PDC and three cutter teeths - Google Patents
A kind of combined drill of three wings PDC and three cutter teeths Download PDFInfo
- Publication number
- CN109505521A CN109505521A CN201910072542.2A CN201910072542A CN109505521A CN 109505521 A CN109505521 A CN 109505521A CN 201910072542 A CN201910072542 A CN 201910072542A CN 109505521 A CN109505521 A CN 109505521A
- Authority
- CN
- China
- Prior art keywords
- pdc
- wing
- connector
- bit
- bit leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000515 tooth Anatomy 0.000 title claims abstract description 65
- 239000004744 fabric Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 6
- 229910003460 diamond Inorganic materials 0.000 description 5
- 239000010432 diamond Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 208000002697 Tooth Abrasion Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013517 stratification Methods 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
-
- 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
- E21B10/08—Roller 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
- E21B10/08—Roller bits
- E21B10/18—Roller 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Abstract
The invention discloses the combined drills of three wing PDC and three cutter teeths of one kind, belong to petroleum drilling bit technical field, solve the problems, such as that combined drill in the prior art causes service life insufficient because unstable, the present invention includes mounting portion, screw thread is offered on the mounting portion, mounting portion is connected with jackshaft, the jackshaft is connected with connector, bit leg is connected on the connector, pressure spring is installed in the bit leg, it is connect inside the upper end of the pressure spring and bit leg, the lower end of pressure spring is connect with connector, it is welded to connect between the connector and bit leg, the empty slot for installing pressure spring is offered inside bit leg, gear wheel is installed on bit leg, there are three the bit legs and gear wheel setting, a PDC wing is provided between gear wheel, side wing is provided at PDC wing position on the side of connector.The present invention effectively reduces bit wear, long service life, and drilling effect is good.
Description
Technical field
The present invention relates to petroleum drilling bit technical fields, and in particular to the combination of three wing PDC and three cutter teeths of one kind
Drill bit.
Background technique
Composite polycrystal-diamond (Polycrystalline Diamond Compact) drill bit, abbreviation PDC drill bit.It
It is to be made into small-sized cutting blocks insert with polycrystalline diamond (thin discs shape) or be sintered on bit body and formed, is arrived suitable for soft
Medium ground.
At the beginning of last century, rock bit replaces drag bit to apply on abrasive hardcoat stratum, but this drill bit is boring shale
With the disadvantage in other flowing rock formations it is mainly that chip hold down causes shaft bottom mud drum, and with boring deep and bottom pressure and mud
The increase of specific gravity, mud drum phenomenon can be more serious.In order to solve this problem, for many years each bit manufacturers to rock bit into
It has gone various improvement, but has produced little effect.In view of drag bit or fixed cutter drill bits are smaller by being influenced in this regard,
People begin trying to combine on two kinds of drill bits.With the popularization and application of PDC drill bit and the improvement of PDC cutting tooth technology, Gu
Determine cutting tooth PDC drill bit and gradually replaces rock bit in a variety of stratum.But in hard, abrasive layer and complicated Directional Drilling
In well operations, due to the limitation of performance, PDC drill bit can not replace rock bit.The advantages of in order to play rock bit and PDC,
Baker Hughes Inc develops recently is integrated with the composite drill bit of a new generation of gear wheel and PDC drill bit.The composite drill bit now released
There are two types of designs altogether, and one is two wing of small size, double-cone bit, another kind is slightly large-sized three wing, three rotary drills
Head.The design of these drill bits is based on four wings and six wing PDC drill bits, and the position of secondary wing is then replaced by the gear wheel of short size
Generation.In this way, the center of wellbore is the PDC cutting tooth completion broken rock by being located on the operator wing, and wellbore peripheral part
Drilling is completed jointly by the cutting tooth on gear wheel and wing, and the broken rock difficulty of wellbore peripheral part is higher, and rock breaking efficiency mainly takes
Certainly in the cooperation of gear wheel and wing.
Although combined drill has had both the advantages of two kinds of drill bits, it can be used to cope with the geological stratification of various conditions, by
Compact-sized in its, stress is more concentrated and stress surface and directional spreding are uneven, may be shaken when in use due to each section
The difference of intensity and generate local damage, result in the need for frequently repairing, increase cost input.
Summary of the invention
It is an object of the invention to:
To solve the problems, such as that combined drill in the prior art causes service life insufficient because unstable, a kind of three knives are provided
The combined drill of wing PDC and three cutter teeths.
The technical solution adopted by the invention is as follows:
A kind of combined drill of three wings PDC and three cutter teeths, including mounting portion offer screw thread on the mounting portion,
Mounting portion is connected with jackshaft, and the jackshaft is connected with connector, which is characterized in that bit leg is connected on the connector, it is described
Pressure spring is installed in bit leg, connect inside the upper end of the pressure spring and bit leg, the lower end of pressure spring is connect with connector, the connector and
Be welded to connect between bit leg, the empty slot for installing pressure spring offered inside bit leg, gear wheel is installed on bit leg, the bit leg with
There are three gear wheel settings, and a PDC wing is provided between gear wheel, is provided with side at PDC wing position on the side of connector
Portion's wing.
Further, the arranged direction of the side wing is parallel with the arranged direction of PDC wing, the length of side wing
For the half of PDC wing, PDC tooth is installed on the side wing, the PDC tooth is cylinder PDC cutting tooth.
Further, the cylinder PDC cutting tooth includes the cylindrical PDC cutting tooth of three kinds of sizes, described three kinds big
Roundlet cylindricality PDC cutting tooth mixed-arrangement, the big tooth diameter of cylindrical PDC cutting tooth are 17~19mm, and the diameter of middle tooth is 15
~17mm, the diameter of small tooth are 13~15mm.
Further, auxiliary chip space is offered on the jackshaft, the auxiliary chip space and side wing interlock cloth
It sets, auxiliary chip space is curved shape, and the cross section of chip space is arc shape.
Further, multiple auxiliary flow jeting ports are offered in the auxiliary chip space, the auxiliary flow jeting port connection is located at
Fluid-through tube in jackshaft and mounting portion, the fluid-through tube are connected with the nozzle on connector, install on the nozzle useful
In the dished cover of protection nozzle.
Further, propulsion device is also equipped on the side of the connector, the propulsion device includes being installed on side
Air nozzle between wing and PDC wing, the air nozzle are communicated with the air inlet on jackshaft, the air inlet and air nozzle
Between be connected with tracheae.
Working principle of the present invention is as follows:
Combined drill of the invention has installed pressure spring additional between bit leg and connector, and palm of roller bits is reduced in drilling process
Vibration, thus reduce the shockproofness of entire drill bit, and the assembling structure relative to palm of roller bits, wing of the invention use
Be the structure being tightly attached on connector, form one with connector, by shake it is smaller, the vibration from palm of roller bits is also inhaled by pressure spring
Major part is received, therefore can be hardly used for a long time by vibration influence, the present invention also passes through the PDC cutting of three kinds of specifications of setting
Tooth adapts to the different cutting situation of wing different parts, reasonable distribution cutting angle and chip power size, slows down cutting tooth
Abrasion condition, to disperse the stress of cutting tooth and promoting drilling effect, the present invention is also additionally arranged side wing on connector side,
Make bit cutting without dead angle, more evenly, cutting odontotripsis is reduced stress, and opens up the row that auxiliary chip space is used for side wing
Bits.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. the present invention reduces drill bit sharp pounding for being subject in drilling by built-in pressure spring, thus reduce cutting tooth by
The abrasion arrived extends the service life of drill bit, carries out assisted machining in combination with side wing is added, makes bit cutting face more
Greatly, stress is more dispersed, and stress suffered by single cutting tooth is smaller, further reduced abrasion, and effective protection drill bit ensure that
Drill bit can permanently effective work.
2. side wing of the invention is smaller compared to PDC wing, unobstructive keeps drill bit volume smaller, bores
Well effect is more preferable, and side wing also uses PDC cutting tooth, not only with high rigidity, high-wearing feature and the thermal conductivity of diamond, but also
Intensity and toughness with hard alloy, long service life.
3. the present invention uses the PDC cutting tooth of three kinds of specifications, the different cutting situation of wing different parts is adapted to, it is real
Reasonable distribution cutting angle and chip power size are showed, have slowed down the abrasion condition of cutting tooth, has kept drill bit structure more reasonable, simultaneously
The PDC cutting tooth of small-medium size can be distributed more on wing, both improve cutting effect, accelerate rate of penetration,
Keep stress condition better.
4. the detritus that auxiliary chip space of the invention can cut the side wing of connector side, hack are discharged, bent
Linear auxiliary chip space increases distance, and the landwaste for allowing to accommodate is more, and the chip space inner surface of arc line shaped can make to arrange
Bits are more smooth, improve the working efficiency of drilling.
5. auxiliary flow jeting port of the invention can promote to assist row's landwaste of chip space, auxiliary chip space blocking, spray are prevented
Dished cover on mouth can protect nozzle not by rock matter layer Fast Wearing, prevent frequent breakage.
6. propulsion device of the invention sprays the gas contrary with bit by air nozzle to promote drill bit
Rotation speed is obviously improved drill speed, to promote the drilling effect of drill bit.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is main view of the invention；
Fig. 2 is the top view of Fig. 1.
Description of symbols:
1- gear wheel, 2- bit leg, 3- pressure spring, 4- jackshaft, 5- assist chip space, and 6- assists flow jeting port, 7- mounting portion, 8-
PDC wing, 9- propulsion device, the side 10- wing, 11- air inlet, 12- nozzle.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It elaborates below with reference to Fig. 1, Fig. 2 to the present invention.
Embodiment 1
The embodiment basic as one:
A kind of combined drill of three wings PDC and three cutter teeths, including mounting portion 7 offer screw thread on mounting portion 7, pacify
Dress portion 7 is connected with jackshaft 4, and jackshaft 4 is connected with connector, which is characterized in that bit leg 2, installation in bit leg 2 are connected on connector
There is pressure spring 3, is connected inside the upper end of pressure spring 3 and bit leg 2, the lower end of pressure spring 3 is connect with connector, is welded between connector and bit leg 2
It connects, the empty slot for installing pressure spring 3 is offered inside bit leg 2, gear wheel 1 is installed on bit leg 2, bit leg 2 is provided with gear wheel 1
Three, a PDC wing 8 is provided between gear wheel 1, is provided with side wing at 8 position of PDC wing on the side of connector
10。
The present invention reduces drill bit sharp pounding for being subject in drilling by built-in pressure spring 3, thus reduce cutting tooth by
The abrasion arrived extends the service life of drill bit, carries out assisted machining in combination with side wing 10 is added, makes bit cutting face
Bigger, stress is more dispersed, and stress suffered by single cutting tooth is smaller, further reduced abrasion, effective protection drill bit, guarantee
Drill bit can permanently effective work.
Embodiment 2
The present embodiment emphasis illustrates the improvements compared with above-described embodiment, and something in common repeats no more, in this implementation
In example, the arranged direction of side wing 10 is parallel with the arranged direction of PDC wing 8, and the length of side wing 10 is PDC wing 8
Half, PDC tooth is installed, PDC tooth is cylinder PDC cutting tooth on side wing 10.
Further, the cylinder PDC cutting tooth includes the cylindrical PDC cutting tooth of three kinds of sizes, described three kinds big
Roundlet cylindricality PDC cutting tooth mixed-arrangement, the big tooth diameter of cylindrical PDC cutting tooth are 17~19mm, and the diameter of middle tooth is 15
~17mm, the diameter of small tooth are 13~15mm.
Side wing 10 of the invention is smaller compared to PDC wing 8, and unobstructive keeps drill bit volume smaller, bores
Well effect is more preferable, and side wing 10 also uses PDC cutting tooth, both has high rigidity, high-wearing feature and the thermal conductivity of diamond,
Again with the intensity and toughness of hard alloy, long service life；The PDC cutting tooth of three kinds of specifications, is suitable for knife
The different cutting situation of wing different parts, realizes reasonable distribution cutting angle and chip power size, slows down the mill of cutting tooth
Situation is damaged, keeps drill bit structure more reasonable, while the PDC cutting tooth of small-medium size can be distributed more on wing, both be promoted
Cutting effect, accelerates rate of penetration, also makes stress condition better.
Embodiment 3
The present embodiment emphasis illustrates the improvements compared with above-described embodiment, and something in common repeats no more, in this implementation
In example, auxiliary chip space 5, auxiliary chip space 5 and 10 interlaced arrangement of side wing are offered on jackshaft 4, auxiliary chip space 5 is
Curved shape, the cross section of chip space are arc shape.
Further, it assists offering multiple auxiliary flow jeting ports 6 in chip space 5, the auxiliary connection of flow jeting port 6 is located at jackshaft
4 and mounting portion 7 in fluid-through tube, fluid-through tube is connected with the nozzle 12 on connector, is equipped on nozzle 12 for protecting spray
The dished cover of mouth 12.
Detritus that auxiliary chip space 5 of the invention can cut the side wing 10 of connector side, hack discharge, it is bent
Linear auxiliary chip space 5 increases distance, and the landwaste for allowing to accommodate is more, and the chip space inner surface of arc line shaped can make to arrange
Bits are more smooth, improve the working efficiency of drilling.Auxiliary flow jeting port 6 can promote to assist row's landwaste of chip space 5, prevent auxiliary
Chip space 5 is helped to block, the dished cover on nozzle 12 can protect nozzle 12 not by rock matter layer Fast Wearing, prevent frequent breakage.
Embodiment 4
The present embodiment emphasis illustrates the improvements compared with above-described embodiment, and something in common repeats no more, in this implementation
In example, be also equipped with propulsion device 9 on the side of connector, propulsion device 9 include be installed on side wing 10 and PDC wing 8 it
Between air nozzle, air nozzle is communicated with the air inlet 11 on jackshaft 4, is connected with tracheae between air inlet 11 and air nozzle.
Propulsion device 9 of the invention sprays the gas contrary with bit by air nozzle to promote the rotation of drill bit
Rotary speed is obviously improved drill speed, to promote the drilling effect of drill bit.
Combined drill of the invention has installed pressure spring 3 additional between bit leg 2 and connector, and 1 tooth of gear wheel is reduced in drilling process
The vibration of the palm 2, thus reduce the shockproofness of entire drill bit, and the assembling structure relative to 1 bit leg 2 of gear wheel, it is of the invention
Wing forms one using the structure being tightly attached on connector, with connector, by smaller, the vibration from 1 bit leg 2 of gear wheel of vibration
Also major part is absorbed by pressure spring 3, therefore can be hardly used for a long time by vibration influence, the present invention also passes through three kinds of rule of setting
The PDC cutting tooth of lattice adapts to the different cutting situation of wing different parts, reasonable distribution cutting angle and chip power size, subtracts
The abrasion condition of slow cutting tooth, to disperse the stress of cutting tooth and promoting drilling effect, the present invention is also added on connector side
Side wing 10 makes bit cutting without dead angle, and more evenly, cutting odontotripsis is reduced stress, and is opened up auxiliary chip space 5 and be used for
The chip removal of side wing 10.
Claims (6)
1. the combined drill of three wing PDC and three cutter teeths of one kind, including mounting portion (7), spiral shell is offered on the mounting portion (7)
Line, mounting portion (7) are connected with jackshaft (4), and the jackshaft (4) is connected with connector, which is characterized in that connects on the connector
Have bit leg (2), be equipped with pressure spring (3) in the bit leg (2), is connect inside the upper end of the pressure spring (3) and bit leg (2), pressure spring
(3) lower end is connect with connector, is welded to connect between the connector and bit leg (2), is offered inside bit leg (2) for installing pressure
The empty slot of spring (3) is equipped with gear wheel (1) on bit leg (2), there are three the bit leg (2) and gear wheel (1) are respectively provided with, three gear wheels
(1) it is provided with a PDC wing (8) between, is provided with side wing (10) at PDC wing (8) position on the side of connector.
2. the combined drill of a kind of three wings PDC and three cutter teeths according to claim 1, which is characterized in that the side
The arranged direction of portion's wing (10) is parallel with the arranged direction of PDC wing (8), and the length of side wing (10) is PDC wing (8)
Half, PDC tooth is installed, the PDC tooth is cylinder PDC cutting tooth on the side wing (10).
3. the combined drill of a kind of three wings PDC and three cutter teeths according to claim 2, which is characterized in that the circle
Cylindricality PDC cutting tooth includes the cylindrical PDC cutting tooth of three kinds of sizes, and three kinds of sizes cylinder PDC cutting tooth mixes cloth
It sets, the big tooth diameter of cylindrical PDC cutting tooth is 17~19mm, and the diameter of middle tooth is 15~17mm, the diameter of small tooth is 13~
15mm。
4. the combined drill of a kind of three wings PDC and three cutter teeths according to claim 1, which is characterized in that in described
Between auxiliary chip space (5), the auxiliary chip space (5) and side wing (10) interlaced arrangement, auxiliary chip removal are offered on axis (4)
Slot (5) is curved shape, and the cross section of chip space is arc shape.
5. the combined drill of a kind of three wings PDC and three cutter teeths according to claim 4, which is characterized in that described auxiliary
It helps in chip space (5) and offers multiple auxiliary flow jeting ports (6), auxiliary flow jeting port (6) connection is located at jackshaft (4) and installs
Fluid-through tube in portion (7), the fluid-through tube are connected with the nozzle (12) on connector, are equipped with and are used on the nozzle (12)
Protect the dished cover of nozzle (12).
6. the combined drill of a kind of three wings PDC and three cutter teeths according to claim 1, which is characterized in that described to connect
It is also equipped with propulsion device (9) on the side of head, the propulsion device (9) includes being installed on side wing (10) and PDC wing
(8) air nozzle between, the air nozzle are communicated with the air inlet (11) on jackshaft (4), the air inlet (11) and jet
Tracheae is connected between mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072542.2A CN109505521A (en) | 2019-01-25 | 2019-01-25 | A kind of combined drill of three wings PDC and three cutter teeths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072542.2A CN109505521A (en) | 2019-01-25 | 2019-01-25 | A kind of combined drill of three wings PDC and three cutter teeths |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109505521A true CN109505521A (en) | 2019-03-22 |
Family
ID=65757659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910072542.2A Pending CN109505521A (en) | 2019-01-25 | 2019-01-25 | A kind of combined drill of three wings PDC and three cutter teeths |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505521A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894465A (en) * | 2020-07-20 | 2020-11-06 | 盐城市荣嘉机械制造有限公司 | Screw drill bit structure for oil development |
| CN113153160A (en) * | 2021-03-18 | 2021-07-23 | 江苏和信石油机械有限公司 | Roller bit drill rod for roller bit rig |
| CN113294096A (en) * | 2021-05-27 | 2021-08-24 | 河北锐石钻头制造有限公司 | PDC drill bit with stable tool face for directional drilling |
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| CN101765695A (en) * | 2007-04-05 | 2010-06-30 | 贝克休斯公司 | Hybrid bit and drilling method thereof |
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| US20110162893A1 (en) * | 2010-01-05 | 2011-07-07 | Smith International, Inc. | High-shear roller cone and pdc hybrid bit |
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| CN207673286U (en) * | 2018-01-04 | 2018-07-31 | 华夏 | A kind of high life drill bit for petroleum geology exploitation |
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| CN101765695A (en) * | 2007-04-05 | 2010-06-30 | 贝克休斯公司 | Hybrid bit and drilling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111894465A (en) * | 2020-07-20 | 2020-11-06 | 盐城市荣嘉机械制造有限公司 | Screw drill bit structure for oil development |
| CN113153160A (en) * | 2021-03-18 | 2021-07-23 | 江苏和信石油机械有限公司 | Roller bit drill rod for roller bit rig |
| CN113153160B (en) * | 2021-03-18 | 2022-07-01 | 江苏和信石油机械有限公司 | Roller bit drill rod for roller bit rig |
| CN113294096A (en) * | 2021-05-27 | 2021-08-24 | 河北锐石钻头制造有限公司 | PDC drill bit with stable tool face for directional drilling |
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Application publication date: 20190322 |