CN205823175U - There is the PDC drill bit of anti-torsion impact - Google Patents
There is the PDC drill bit of anti-torsion impact Download PDFInfo
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- CN205823175U CN205823175U CN201620716000.6U CN201620716000U CN205823175U CN 205823175 U CN205823175 U CN 205823175U CN 201620716000 U CN201620716000 U CN 201620716000U CN 205823175 U CN205823175 U CN 205823175U
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Abstract
The utility model discloses a kind of PDC drill bit with anti-torsion impact, including joint, bit matrix, wing and nozzle, also include main cutting tooth and secondary cutting tooth, described main cutting tooth is arranged on the knife face of wing, and with drill bit creep into time direction of rotation as front, secondary cutting tooth is arranged on the wing after main cutting tooth, and proud exposure is less than the proud exposure of main cutting tooth, and the secondary cutting tooth cutting flank of tooth is in opposite direction with bit.This utility model can improve drill bit anti-torsion impact capacity, and balancing axial the pressure of the drill protection PDC tooth improves drilling footage, improves stability of bit and be greatly reduced the drill bit vibration in shaft bottom.
Description
Technical field
This utility model relate to a kind of have anti-torsion impact PDC drill bit, belong to petroleum gas, mine engineering,
The drilling equipment fields such as matter.
Background technology
In recent years, each oil gas field is more and more higher to the construction cycle of petroleum gas and the requirement of safety, phase therewith
Supporting various instruments are greatly improved in performance and on service life, rate of penetration to drill bit in drilling process
Requirement with drilling depth is more and more higher.
PDC drill bit has distinctive cutting principle over the ground, the rate of penetration of drill bit can be greatly improved, become the head of drilling speed
Select drill bit.Such as, a kind of orientation PDC drill bit disclosed in China Patent Publication No. 203296699U, publication date is 2013-11-20,
It includes bit body and wing；Described wing has five, the respectively first wing, the second wing, the 3rd wing, the 4th wing with
And the 5th wing；Front-seat cutting tooth and heel row cutting tooth it is provided with on each described wing；Front row on first wing is cut
Cut tooth and include that five main cutting teeth, heel row cutting tooth include two secondary cutting teeth；Front-seat cutting tooth on second wing includes four
Individual main cutting tooth and a secondary cutting tooth, heel row cutting tooth includes two secondary cutting teeth；Front-seat cutting tooth on 3rd wing
Including six main cutting teeth, heel row cutting tooth includes two secondary cutting teeth；Front-seat cutting tooth on 4th wing includes eight masters
Cutting tooth, heel row cutting tooth includes two secondary cutting teeth；Front-seat cutting tooth on 5th wing includes seven main cutting teeth, heel row
Cutting tooth includes two secondary cutting teeth.
In oil and gas development drillng operation, if geologic lithology ratio is more uniform, or there is the stratum that big section lithology is similar
Time, as long as selecting the drill bit being suitable for the most permissible according to geologic lithology.But when stratum lithology distributions uneven, have soft or hard interlayer or
Be containing complex lithologies such as conglomerates in the presence of, cause wellbore construction operation geological structure indefinite, the type selecting for drill bit brings tired
Difficult, it is sometimes desirable to frequently to make a trip, increase construction risk, extend drilling period, increase drilling cost, due to torsional pulse effect
Damaging property of Cutter is damaged, shortens bit life.
Therefore, what conventional PDC drill bit pair toothing was designed with is PDC tooth work surface with main cutting tooth work surface in the same direction,
Being that impact resistance is poor boring chance hard formation bad ground, it is that reverse anti-torsion impact capacity is poor that gyration especially occurs,
Increase the axial vibration in shaft bottom, cause PDC composite sheet to collapse tooth etc. and damage in advance.
Summary of the invention
The purpose of this utility model is the problems referred to above overcoming prior art to exist, it is provided that one has anti-torsion impact
PDC drill bit.This utility model can improve drill bit anti-torsion impact capacity, and the protection PDC tooth raising of balancing axial the pressure of the drill is crept into
Drilling depth, improves stability of bit and is greatly reduced the drill bit vibration in shaft bottom.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of PDC drill bit with anti-torsion impact, including joint, bit matrix, wing and nozzle, it is characterised in that:
Also including main cutting tooth and secondary cutting tooth, described main cutting tooth is arranged on the knife face of wing, and rotation side when creeping into drill bit
To for front, secondary cutting tooth is arranged on the wing after main cutting tooth, and proud exposure is less than the proud exposure of main cutting tooth,
And the cutting flank of tooth of pair cutting tooth is in opposite direction with bit.
Described secondary cutting tooth proud exposure is less than the proud exposure 2 ~ 3mm of main cutting tooth.
Being provided with cutting-in control structure on described wing inner conical surface, cutting-in control structure is hard-metal insert or PDC cutting
Tooth, proud exposure is less than the proud exposure 2 ~ 3mm of main cutting tooth.
Multipoint positioning rule footpath tooth it is provided with between each gauge position and the bizet wing binding site of described bit matrix,
Multipoint positioning rule footpath tooth is that PDC cuts tooth.
Being provided with on the knife face of described bit matrix gauge position and actively advise footpath tooth, actively advising footpath tooth is that PDC cuts tooth.
Being provided with gauge reinforcement tooth on described bit matrix gauge position and borehole wall contact surface, it is that PDC cuts that gauge strengthens tooth
Cut tooth or hard-metal insert.
Employing the utility model has the advantage of:
1, this utility model uses the most secondary cutting toothing, improves drill bit anti-torsion impact capacity, balancing axial the pressure of the drill
Protection PDC tooth improves drilling footage, improves stability of bit and is greatly reduced the drill bit vibration in shaft bottom.
2, this utility model uses major-minor cutting tooth design, and drill bit is when wedging stratum, and main tooth first contacts stratum and creeps into speed
Degree ratio is very fast, and when may wear to a certain degree, secondary tooth participates in cutting stratum, effectively extends the service life of drill bit；Use
The design of major-minor tooth cutting structure adds the contact point of cutting tooth and shaft bottom, so that drill bit has more preferable stability.Use
The design of this cutting structure is applicable to that lithology is uneven and the staggering stratum of soft or hard.
3, this utility model uses special cutting pair toothing design, and the i.e. secondary tooth flank of tooth is in opposite direction with bit:
In drilling process, bit shoulder position rock stress is concentrated, and landwaste is often deposited in this position, uses this kind of special knot
Structure designs, and can reduce cutting resistance and mill resistance；When drill bit creeps into the staggering stratum of soft or hard, hard formation, twisting vibration
Relatively big to cutting tooth injury, adopt the structure design, during twisting vibration, the secondary tooth flank of tooth connects with landwaste and rock
Touch, effectively prevent rock impact that drill bit is caused damage.
4, this utility model uses cutting-in control structure design on wing inner conical surface, can promote that operating personnel is according to design
Parameter is crept into, and effectively prevents from, owing to cruelty construction causes being hit property of drill bit to destroy, shortening drilling life of bit.
5, this utility model uses multipoint positioning well-behaved and actively rule structure tooth design, can increase drill bit in shaft bottom
Stability and effectively prevent undergauge in drilling process and cause drilling well to lose.
Accompanying drawing explanation
Fig. 1 is this utility model embodiment 1 structural representation
Fig. 2 is this utility model embodiment 1 structural representation
Figure is labeled as: 1, nozzle, 2, cutting-in control structure, 3, main cutting tooth, 4, secondary cutting tooth, 5, actively advise footpath tooth,
6, multipoint positioning rule footpath tooth, 7, gauge strengthen tooth, 8, bit matrix, 9, joint.
Detailed description of the invention
Embodiment 1
A kind of PDC drill bit with anti-torsion impact, including joint 9, bit matrix 8, wing and nozzle 1, also includes main
Cutting tooth 3 and secondary cutting tooth 4, described main cutting tooth 3 is arranged on the knife face of wing, and when creeping into drill bit, direction of rotation is front
Side, secondary cutting tooth 4 is arranged on the wing after main cutting tooth 3, and proud exposure is less than the proud exposure of main cutting tooth 3, and
The cutting flank of tooth of secondary cutting tooth 4 is in opposite direction with bit.
The preferred implementation of the present embodiment is, described secondary cutting tooth 4 proud exposure is less than the proud exposure of main cutting tooth 3
2~3mm。
Operation principle of the present utility model is: drill bit is when wedging stratum, and main cutting tooth 3 first contacts stratum rate of penetration ratio
Comparatively fast, when may wear to a certain degree, secondary cutting tooth 4 participates in cutting stratum；Balancing axial the pressure of the drill protection PDC drill bit improve into
Chi；The vibrations in shaft bottom of the stability reduction drill bit of raising drill bit.The flank of tooth using pair cutting tooth 4 is in opposite direction with bit
Structure designs: effectively can concentrate and at landwaste easily accumulation in bit shoulder position rock stress, reduce cutting resistance and mill
Resistance；When drill bit creeps into the staggering stratum of soft or hard, hard formation, twisting vibration is relatively big to cutting tooth injury, uses this kind of pair to cut
Cut tooth design, during twisting vibration, the secondary tooth flank of tooth and landwaste and rock contact, effectively prevent rock impact to brill
Head causes damage.
Embodiment 2
The present embodiment is essentially identical with above-described embodiment, differs primarily in that:
Being provided with cutting-in control structure 2 on described wing inner conical surface, cutting-in control structure 2 is cut for hard-metal insert or PDC
Cutting tooth, proud exposure is less than the proud exposure 2 ~ 3mm of main cutting tooth.
Multipoint positioning rule footpath tooth it is provided with between each gauge position and the bizet wing binding site of described bit matrix
6, multipoint positioning rule footpath tooth 6 cuts tooth for PDC.
It is provided with on the knife face of described bit matrix 8 gauge position and actively advises footpath tooth 5, actively advise footpath tooth 5 and cut for PDC
Tooth.
Being provided with gauge reinforcement tooth 7 on described bit matrix 8 gauge position and borehole wall contact surface, it is PDC that gauge strengthens tooth 7
Cutting tooth or hard-metal insert.
Multipoint positioning rule footpath tooth 6 is arranged in the middle part of each gauge and bizet wing binding site, and multipoint positioning rule footpath tooth is
PDC cuts tooth, makes drill bit be placed in well center all the time, keeps stability of bit.
Actively advising footpath tooth 5 to be arranged on the knife face of gauge position, actively advising footpath tooth is that PDC cuts tooth, plays gauge effect, for
Follow-up drilling process improves the hole quality of high-quality.
Gauge is strengthened tooth 7 and is arranged on gauge and borehole wall contact surface, and it is PDC cutting tooth or hard alloy that gauge strengthens tooth
Tooth, main reinforcement gauge performance, it is ensured that hole quality.
Use cutting-in control structure on major-minor cutting tooth design and special secondary tooth cutting structure, wing inner conical surface, many
Point location is well-behaved and actively rule structure tooth design, makes PDC drill bit have more preferable stability, durability and relatively at bad ground
High rate of penetration, thus improve in hard formation, the efficiency of breaking rock of bad ground drill bit, the service life of prolongation drill bit.
Claims (6)
1. having a PDC drill bit for anti-torsion impact, including joint (9), bit matrix (8), wing and nozzle (1), it is special
Levy and be: also including main cutting tooth (3) and secondary cutting tooth (4), described main cutting tooth (3) is arranged on the knife face of wing, and with
When drill bit creeps into, direction of rotation is front, and secondary cutting tooth (4) is arranged on the wing after main cutting tooth (3), and proud exposure
Less than the proud exposure of main cutting tooth (3), and the cutting flank of tooth of secondary cutting tooth (4) is in opposite direction with bit.
The PDC drill bit with anti-torsion impact the most according to claim 1, it is characterised in that: described secondary cutting tooth (4) goes out
Dew height is less than the proud exposure 2 ~ 3mm of main cutting tooth (3).
The PDC drill bit with anti-torsion impact the most according to claim 2, it is characterised in that: on described wing inner conical surface
Being provided with cutting-in control structure (2), cutting-in control structure (2) is hard-metal insert or PDC cutting tooth, and proud exposure is cut less than main
Cut the proud exposure 2 ~ 3mm of tooth (3).
The PDC drill bit with anti-torsion impact the most according to claim 3, it is characterised in that: described bit matrix (8)
Being provided with multipoint positioning rule footpath tooth (6) between each gauge position and bizet wing binding site, multipoint positioning rule footpath tooth (6) is
PDC cuts tooth.
The PDC drill bit with anti-torsion impact the most according to claim 4, it is characterised in that: described bit matrix (8) is protected
Being provided with on the knife face of path position and actively advise footpath tooth (5), actively advising footpath tooth (5) is that PDC cuts tooth.
The PDC drill bit with anti-torsion impact the most according to claim 5, it is characterised in that: described bit matrix (8) is protected
Being provided with gauge reinforcement tooth (7) on path position and borehole wall contact surface, it is PDC cutting tooth or hard-metal insert that gauge strengthens tooth (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716000.6U CN205823175U (en) | 2016-07-08 | 2016-07-08 | There is the PDC drill bit of anti-torsion impact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620716000.6U CN205823175U (en) | 2016-07-08 | 2016-07-08 | There is the PDC drill bit of anti-torsion impact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205823175U true CN205823175U (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620716000.6U Active CN205823175U (en) | 2016-07-08 | 2016-07-08 | There is the PDC drill bit of anti-torsion impact |
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| CN (1) | CN205823175U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143287A (en) * | 2017-07-14 | 2017-09-08 | 宜昌神达石油机械有限公司 | Yangtze Cambrian system shale gas exploitation combined bitses during one kind is applicable |
| CN113323592A (en) * | 2021-08-04 | 2021-08-31 | 四川川庆石油钻采科技有限公司 | PDC drill bit capable of realizing casing drilling and design method thereof |
| CN114718465A (en) * | 2022-04-18 | 2022-07-08 | 中南大学 | Dynamic pulling-shearing tunneling drill bit and composite rock breaking method |
| CN117514016A (en) * | 2024-01-03 | 2024-02-06 | 西南石油大学 | PDC drill bit with reversely-mounted teeth |
-
2016
- 2016-07-08 CN CN201620716000.6U patent/CN205823175U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143287A (en) * | 2017-07-14 | 2017-09-08 | 宜昌神达石油机械有限公司 | Yangtze Cambrian system shale gas exploitation combined bitses during one kind is applicable |
| CN113323592A (en) * | 2021-08-04 | 2021-08-31 | 四川川庆石油钻采科技有限公司 | PDC drill bit capable of realizing casing drilling and design method thereof |
| CN113323592B (en) * | 2021-08-04 | 2021-10-08 | 四川川庆石油钻采科技有限公司 | PDC drill bit capable of realizing casing drilling and design method thereof |
| CN114718465A (en) * | 2022-04-18 | 2022-07-08 | 中南大学 | Dynamic pulling-shearing tunneling drill bit and composite rock breaking method |
| CN117514016A (en) * | 2024-01-03 | 2024-02-06 | 西南石油大学 | PDC drill bit with reversely-mounted teeth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200915 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: Chenghua District Green Road 610051 Chengdu City, Sichuan province 1 No. 3 Chuanqing drilling Department of Science & Technology Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right |