CN106593307A - Dynamic-static type double-stage PDC drill bit - Google Patents
Dynamic-static type double-stage PDC drill bit Download PDFInfo
- Publication number
- CN106593307A CN106593307A CN201710044703.8A CN201710044703A CN106593307A CN 106593307 A CN106593307 A CN 106593307A CN 201710044703 A CN201710044703 A CN 201710044703A CN 106593307 A CN106593307 A CN 106593307A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- wing
- pdc
- bit
- stage
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 23
- 238000005553 drilling Methods 0.000 abstract description 14
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000010008 shearing 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type 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
- E21B10/42—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
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 dynamic-static type double-stage PDC drill bit comprises a drill bit body and fixed blades. PDC teeth, water holes or nozzles and the like are arranged on the fixed blades. The dynamic-static type double-stage PDC drill bit is characterized in that a rotary blade is installed in the core area of the drill bit, PDC teeth are installed on the rotary blade, and the PDC teeth are arranged on the rotary blade and the fixed blades in a stair mode. By adopting the structure, the rock breaking efficiency of the PDC teeth of the core area of the drill bit can be improved, and the mechanical drilling rate of the drill bit is increased; and meanwhile, depending on the characteristic of the double-stage drill bit, the drilling stability of the drill bit is enhanced, the service life of the drill head is prolonged, and the overall performance of the drill bit is improved accordingly.
Description
Technical field
The invention belongs to the construction of oil-gas drilling engineering, mine engineering, building foundation engineering, geological drilling, tunnel
A kind of technical equipment such as engineering, the hydrology and no-dig technique field, and in particular to sound formula two-stage PDC bit.
Background technology
PDC drill bit by high rigidity, it is wear-resisting, from sharp composite polycrystal-diamond（Abbreviation PDC teeth or cutting tooth）As
Cutting element is shearing and fractured rock.PDC drill bit rate of penetration in soft-medium hard formation is high, life-span length, and drilling cost is low,
Therefore it is used widely in the drilling of Oil/gas Well.It is the impact from bottom rock that composite sheet collapses the main cause of damage
Power, in addition to the impact that rock heterogeneity brings, in the more common scenario, impulsive force the shaking from drill bit that cutting tooth is born
Move, particularly oscillation crosswise.Generally, it is that cutting speed is higher on drill bit to be easiest to that composite sheet occurs to collapse the position of damage on drill bit
Crown and crown beyond radial zone.Near drill bit axial centre it is to fix cutting tooth on PDC drill bit, due to
The too close drill bit axial centre of the fixation cutting tooth, the radius of gyration is little, and cutting speed is low, thus stock-removing efficiency is low；And this is fixed
Cutting tooth speed individually cuts shaft bottom axial centre rock, and the load born is larger, composite bed easily occurs and crushes or come off.
Assume there is a section plane for passing through certain point on drill axis and drill bit on drill bit（Referred to as cross the axle of the point
Line plane or axial plane）.When drill bit is when rate of penetration is to rotate around own axes under conditions of zero, the contour line of cutting element with
Section plane or axial plane are crossed to form intersection, and the intersection is the axial plane contour line of cutting element, by the axial plane of all cutting elements
Contour line pools together the shaft bottom coverage diagram to form drill bit, in the coverage diagram of shaft bottom, can do one with all cutting units
The tangent envelope curve of axial plane contour line, be referred to as bit cutting contour line, bit cutting contour line reflects drill bit and gets out
Shaft bottom basic configuration feature.
The content of the invention
The technical problem to be solved is the deficiency and a kind of sound of offer existed for above-mentioned prior art
Formula two-stage PDC bit, can improve the efficiency of breaking rock of drill bit center portion region PDC teeth, the rate of penetration of drill bit be improved, while by double
Level drill bit feature, strengthens drill bit drilling stability, extends the service life of drill bit, so as to lift the combination property of drill bit.
The object of the invention is realized by following technical proposals：
The PDC drill bit of prior art, generally includes bit body, fixing wing, is provided with PDC teeth in fixing wing, water hole or
Person's nozzle etc., the difference of the PDC drill bit of this patent is：Drill bit center portion region is provided with rotation wing, sets on rotation wing
PDC teeth are equipped with, and rotate wing and arrange PDC teeth into echelon with fixing wing.
In this patent, drill bit center portion region is provided with rotation wing, on rotation wing PDC teeth are provided with, rotate wing
On PDC teeth scrape and cut rock under the rotation effect of rotation wing, the efficiency of breaking rock in center portion region is improved, so as to improve drill bit
Rate of penetration, rotation wing arranges PDC teeth with fixing wing into echelon, so either rotates the tooth of wing or fixing wing
First rock cutting, all can form the step of projection or depression in drill bit center portion, can so improve drill bit drilling stability, while
Rock stress can be discharged at step, the drilling efficiency of drill bit is improved.
Alternatively, fluid motor is provided with drill bit body, is directly connected with rotation wing.
In such scheme, the power resources of wing are rotated in fluid motor, the PDC teeth thus rotated on wing can be steady
Rock is cut in fixed scraping, it is ensured that the tooth in drill bit center portion region can efficient fractured rock.
Alternatively, the axis of rotation wing is parallel with center line of bit or overlaps.
In such scheme, only when the axis for rotating wing is parallel with center line of bit or overlaps, rotation is just can guarantee that
On the rotor wing tooth equivalent to combined drilling mode fractured rock, so as to improve the drilling efficiency in center portion region.
Alternatively,：The axis of rotation wing is parallel with center line of bit, and the eccentric throw span of rotation wing is
e≤15mm。
In such scheme, the presence of wing eccentric throw is rotated, the cutting tooth rotated on wing can be allowed to cut knot with fixed
The mutual alignment of structure is more flexible, to meet drill bit suitable for Different Strata, the complex drilling condition of lithology.
Alternatively, the swivel knife wing raises up, and higher than fixing wing, drill bit is into the outer recessed twin-stage drill bit of convex.
In such scheme, rotation wing is bored equivalent to neck eye section, fixing wing equivalent to the concentric enlarging while drilling of reaming hole section
Head, the stability of bit of this spline structure is significantly improved, while the efficiency of breaking rock of the PDC teeth at step is also significantly improved.
Alternatively, indent under swivel knife flapwise, less than fixing wing, drill bit is into indent evagination twin-stage drill bit.
In such scheme, PDC teeth first cut shaft bottom in fixing wing, and in bit central region the cylinder of a projection is formed
Shape phacolith, raised phacolith can suppress the oscillation crosswise of drill bit, improve the stability of drill bit, and the rock that the phacolith of projection goes out should
Power has discharged, rock property deterioration, and PDC teeth can quick crashing rock easily on rotation wing.
Alternatively, rotate wing and axial lock is realized by ball.
In such scheme, rotation wing realizes axial lock by ball, prevents from rotating the axial motion of wing, so as to
Extend the service life of drill bit.
Alternatively, rotate on wing and be provided with water hole.
In such scheme, water hole is provided with rotation wing, drill bit center portion region can be cleaned, while cooling down rotation
PDC teeth on the rotor wing, so as to extend the life-span of drill bit.
Alternatively, sealing, lubricating system are provided with drill bit.
In such scheme, sealing, lubricating system are provided with drill bit, the life-span of rotation wing can be extended.
Beneficial effects of the present invention：
1st, the PDC teeth on rotation wing will be scraped under bit body with rotation wing collective effect and cut rock, improve center portion region
Efficiency of breaking rock, so as to improve the rate of penetration of drill bit.
2nd, rotate wing and fixing wing and arrange PDC teeth into echelon, so either rotation wing or fixing wing
Tooth elder generation rock cutting, all can form the step of projection or depression in drill bit center portion, can so suppress the oscillation crosswise of drill bit, from
And improve drill bit drilling stability.
3rd, new drill bit structure forms the step of projection or depression in drill bit center portion, and rock stress is released at step
Put, the PDC teeth at step can quick crashing rock easily, so as to improve the efficiency of breaking rock of drill bit.
Description of the drawings
Fig. 1 is PDC drill bit schematic diagram of the present invention
Fig. 2 is PDC drill bit top view
Fig. 3 is the sectional view of PDC drill bit of the present invention
Fig. 4 is Section A-A schematic diagram
Fig. 5 is the twin-stage drill body of fixing wing
Fig. 6 is rotation wing schematic diagram
Fig. 7 is two-stage PDC bit radial direction coverage diagram of the present invention
Fig. 8 is radially to cover schematic diagram with eccentric drill bit
Fig. 9 is rotation wing evagination, fixing wing indent drill bit radial direction coverage diagram
Identify in figure：1- bit bodys；2- fixing wings；21- fixing wing PDC teeth；3- rotates wing；31- rotates wing PDC
Tooth；32- ball grooves；33- rotation wing runners hole；4- water holes or nozzle；41- central ports；Groove on 5- bit bodys；6- liquid
Dynamic motor；61- motor cases；62- motor shafts；63- blades；7- balls；8- sealing rings, 9- lubrications and ball channel.
Specific embodiment
Following non-limiting examples are used to illustrate the present invention.
As shown in Figure 1, 2, a kind of sound formula two-stage PDC bit, including drill bit 1, fixing wing 2, set in fixing wing
It is equipped with PDC teeth 21, water hole or nozzle 4 etc., it is characterised in that：Bit central region is provided with rotation wing 3, wing is rotated
On be provided with PDC teeth 31, and rotate wing and arrange PDC teeth into echelon with fixing wing.
Preferably, being provided with fluid motor 6 in drill bit body, directly it is connected with rotation wing 3, as shown in figure 3, as excellent
Choosing, fluid motor is vane type fluid motor, as shown in Figure 4.
Preferably, axis and the centerline parallel of drill bit 1 of rotation wing 3 or overlap, as shown in Figure 3.
Preferably, the axis of rotation wing is parallel with center line of bit, and it is e to rotate the eccentric throw span of wing
≤ 15mm, as shown in Figure 8.
Preferably, rotation wing 3 raises up, higher than fixing wing 2, drill bit is into the outer recessed twin-stage drill bit of convex, such as Fig. 9
It is shown.
Preferably, the rotation downward indent of wing 3, less than fixing wing 2, drill bit is such as schemed into indent evagination twin-stage drill bit
1st, shown in 7,8.
Preferably, rotation wing 3 realizes axial lock by ball 7, as shown in Fig. 3,6.
Preferably, water hole 41 is provided with rotation wing 3, as shown in Figure 2,6.
Preferably, 1 sealing, lubricating system 9 are provided with drill bit, as shown in Figure 3.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of sound formula two-stage PDC bit, including bit body, fixing wing, are provided with PDC teeth, water hole in fixing wing
Or nozzle etc., it is characterised in that：Bit central region is provided with rotation wing, PDC teeth are provided with rotation wing, and revolve
The rotor wing arranges PDC teeth with fixing wing into echelon.
2. a kind of sound formula two-stage PDC bit as claimed in claim 1, it is characterised in that：Horse of surging is provided with drill bit body
Reach, be directly connected with rotation wing.
3. a kind of sound formula two-stage PDC bit as claimed in claim 1, it is characterised in that：The axis and drill bit of rotation wing
Diameter parallel or coincidence.
4. a kind of sound formula two-stage PDC bit as described in claim 3, it is characterised in that：The axis and drill bit of rotation wing
Diameter parallel, and it is e≤15mm to rotate the eccentric throw span of wing.
5. a kind of sound formula two-stage PDC bit as claimed in claim 1, it is characterised in that：The swivel knife wing raises up, and is higher than
Fixing wing, drill bit is into the outer recessed twin-stage drill bit of convex.
6. a kind of sound formula two-stage PDC bit as claimed in claim 1, it is characterised in that：Indent under swivel knife flapwise, is less than
Fixing wing, drill bit is into indent evagination twin-stage drill bit.
7. a kind of sound formula two-stage PDC bit as claimed in claim 1, it is characterised in that：Rotation wing is realized by ball
Axial lock.
8. a kind of sound formula two-stage PDC bit as claimed in claim 1, it is characterised in that：Water hole is provided with rotation wing.
9. a kind of sound formula two-stage PDC bit as claimed in claim 1, it is characterised in that：Sealing, lubrication are provided with drill bit
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044703.8A CN106593307B (en) | 2017-01-21 | 2017-01-21 | A kind of sound formula two-stage PDC bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710044703.8A CN106593307B (en) | 2017-01-21 | 2017-01-21 | A kind of sound formula two-stage PDC bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593307A true CN106593307A (en) | 2017-04-26 |
| CN106593307B CN106593307B (en) | 2018-10-23 |
Family
ID=58585202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710044703.8A Active CN106593307B (en) | 2017-01-21 | 2017-01-21 | A kind of sound formula two-stage PDC bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106593307B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086916A (en) * | 2018-02-01 | 2018-05-29 | 西南石油大学 | A kind of long-life PDC drill bit with indexable wing |
| CN108179983A (en) * | 2018-02-26 | 2018-06-19 | 西南石油大学 | It is a kind of to rush the efficient rock-breaking combination tool for revolving-scraping and cut staged effect |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
| CN110029934A (en) * | 2019-04-23 | 2019-07-19 | 西南石油大学 | Double speed PDC drill bit based on screw drive |
| CN110145238A (en) * | 2018-02-10 | 2019-08-20 | 西南石油大学 | A kind of low torque diamond bit |
| CN110145241A (en) * | 2018-02-10 | 2019-08-20 | 西南石油大学 | A kind of low torque diamond bit suitable for hard formation drilling |
| CN110295851A (en) * | 2019-06-17 | 2019-10-01 | 河北锐石钻头制造有限公司 | A kind of split type PDC drill bit of bias |
| CN110331941A (en) * | 2019-07-04 | 2019-10-15 | 立府精密机械有限公司 | A kind of Strong shear polycrystalline diamond compact bit |
| CN110374518A (en) * | 2019-07-04 | 2019-10-25 | 立府精密机械有限公司 | One kind refusing mud drum polycrystalline diamond compact bit |
| CN111305759A (en) * | 2020-03-26 | 2020-06-19 | 中国石油天然气集团有限公司 | Double-speed double-core drilling speed increasing system for increasing drilling speed of oil and gas well |
| CN111322014A (en) * | 2020-03-26 | 2020-06-23 | 中国石油天然气集团有限公司 | Double-speed double-core drilling speed increasing method for increasing drilling speed of oil and gas well |
| CN111764832A (en) * | 2020-07-14 | 2020-10-13 | 江苏煤炭地质勘探三队 | PDC drill bit suitable for crushing hard basalt stratum |
| CN111894463A (en) * | 2020-07-17 | 2020-11-06 | 中国石油大学(北京) | Diamond and single cone composite drill bit for drilling hard formation |
| CN112610159A (en) * | 2020-12-07 | 2021-04-06 | 中国石油大学(华东) | Stepped drill bit suitable for intelligent drilling of difficult-to-drill stratum and drilling method |
| CN114439375A (en) * | 2020-10-19 | 2022-05-06 | 中国石油化工股份有限公司 | Drill bit for hard formation |
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| CN203201475U (en) * | 2013-02-07 | 2013-09-18 | 杨立源 | Drill provided with rotating disc cutters on cutter wings |
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| CN204152440U (en) * | 2014-10-15 | 2015-02-11 | 沧州格锐特钻头有限公司 | A kind of PDC drill bit with transverse injection hydraulic structure |
| CN204225770U (en) * | 2014-11-14 | 2015-03-25 | 中国石油化工股份有限公司 | A kind of combined type diamond-impregnated bit |
| CN105221077A (en) * | 2015-10-12 | 2016-01-06 | 西南石油大学 | A kind of twin-stage drill bit |
| CN105756566A (en) * | 2014-12-19 | 2016-07-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | PDC (polycrystalline diamond compact) bit provided with retractable blades |
| CN205876193U (en) * | 2016-06-13 | 2017-01-11 | 西南石油大学 | Multistage stairstepping PDC drill bit |
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2017
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| CN202483461U (en) * | 2012-04-01 | 2012-10-10 | 北京金宝顺福石油技术开发有限公司 | Polycrystalline diamond compact (PDC) bit with six scrapers |
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| CN204152440U (en) * | 2014-10-15 | 2015-02-11 | 沧州格锐特钻头有限公司 | A kind of PDC drill bit with transverse injection hydraulic structure |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086916B (en) * | 2018-02-01 | 2023-10-13 | 西南石油大学 | Long-life PDC drill bit with transposition blade |
| CN108086916A (en) * | 2018-02-01 | 2018-05-29 | 西南石油大学 | A kind of long-life PDC drill bit with indexable wing |
| CN110145238A (en) * | 2018-02-10 | 2019-08-20 | 西南石油大学 | A kind of low torque diamond bit |
| CN110145241A (en) * | 2018-02-10 | 2019-08-20 | 西南石油大学 | A kind of low torque diamond bit suitable for hard formation drilling |
| CN108179983A (en) * | 2018-02-26 | 2018-06-19 | 西南石油大学 | It is a kind of to rush the efficient rock-breaking combination tool for revolving-scraping and cut staged effect |
| CN108533183B (en) * | 2018-06-22 | 2023-08-15 | 西南石油大学 | PDC drill bit with passive rotary nozzle arranged on blade |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
| CN110029934A (en) * | 2019-04-23 | 2019-07-19 | 西南石油大学 | Double speed PDC drill bit based on screw drive |
| CN110295851A (en) * | 2019-06-17 | 2019-10-01 | 河北锐石钻头制造有限公司 | A kind of split type PDC drill bit of bias |
| CN110374518A (en) * | 2019-07-04 | 2019-10-25 | 立府精密机械有限公司 | One kind refusing mud drum polycrystalline diamond compact bit |
| CN110331941A (en) * | 2019-07-04 | 2019-10-15 | 立府精密机械有限公司 | A kind of Strong shear polycrystalline diamond compact bit |
| CN111322014A (en) * | 2020-03-26 | 2020-06-23 | 中国石油天然气集团有限公司 | Double-speed double-core drilling speed increasing method for increasing drilling speed of oil and gas well |
| CN111305759A (en) * | 2020-03-26 | 2020-06-19 | 中国石油天然气集团有限公司 | Double-speed double-core drilling speed increasing system for increasing drilling speed of oil and gas well |
| CN111764832A (en) * | 2020-07-14 | 2020-10-13 | 江苏煤炭地质勘探三队 | PDC drill bit suitable for crushing hard basalt stratum |
| CN111894463A (en) * | 2020-07-17 | 2020-11-06 | 中国石油大学(北京) | Diamond and single cone composite drill bit for drilling hard formation |
| CN114439375A (en) * | 2020-10-19 | 2022-05-06 | 中国石油化工股份有限公司 | Drill bit for hard formation |
| CN112610159A (en) * | 2020-12-07 | 2021-04-06 | 中国石油大学(华东) | Stepped drill bit suitable for intelligent drilling of difficult-to-drill stratum and drilling method |
| CN112610159B (en) * | 2020-12-07 | 2022-05-13 | 中国石油大学(华东) | Stepped drill bit suitable for intelligent drilling of difficult-to-drill stratum and drilling method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106593307B (en) | 2018-10-23 |
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