CN108194026B - Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head - Google Patents
Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head Download PDFInfo
- Publication number
- CN108194026B CN108194026B CN201810038347.3A CN201810038347A CN108194026B CN 108194026 B CN108194026 B CN 108194026B CN 201810038347 A CN201810038347 A CN 201810038347A CN 108194026 B CN108194026 B CN 108194026B
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- pdc
- cutting
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- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 81
- 239000010432 diamond Substances 0.000 title claims abstract description 81
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000000203 mixture Substances 0.000 title claims description 12
- 239000011435 rock Substances 0.000 claims abstract description 38
- 238000010276 construction Methods 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 31
- 238000005520 cutting process Methods 0.000 claims description 26
- 239000011159 matrix material Substances 0.000 claims description 16
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 4
- 210000000515 tooth Anatomy 0.000 description 27
- 238000005755 formation reaction Methods 0.000 description 26
- 238000005553 drilling Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004575 stone Substances 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
- 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 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
- E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
-
- 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
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
- E21B10/5676—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—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)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to cutting-abrasive type diamond impregnated blocks and PDC composite sheet to mix diamond setting head, for wing formula drill bit, using trapezoidal wing, bizet section shape is straight line-circular arc-circular arc type bipyramid bizet section, first impregnated piece and second impregnated piece is alternately arranged on each operator wing, secondary wing, and distribution has shaft bottom all standing ability, and first impregnated piece of diamond grit is 80 mesh, concentration is 120%, tyre body hardness 60HRC；Second impregnated piece of diamond grit is 60 mesh, concentration 100%, tyre body hardness 45HRC；It operates there are three the wings, the angle of the two neighboring operator wing is 100O‑140 O, first operates the wing with super roof construction, and bit central arranges that 1 round wedge shape PDC tooth, 7 cylinder PDC teeth are distributed in circle wedge shape PDC tooth rim and enclose, and the present invention solves existing PDC drill bit, and rock bit and diamond bit adapt to the more single problem in stratum.
Description
Technical field
The present invention relates to the drill bits of oil and gas drilling well, and in particular to a kind of cutting with adaptive formation characteristics
Cut-abrasive type diamond and PDC composite sheet mix diamond setting head.
Background technique
Oil drilling is the matching degree of drill bit and stratum using drill bit as rock crushing tool, decide efficiency of breaking rock and
The service life of drill bit, a suitable drill bit not only can significantly improve drilling speed, while can also reduce the hair of down-hole accident
It is raw, achieve the purpose that high speed, low cost, safety drilling.Especially deep-well, drilled strata is more across geological epoch, formation lithology
Variation is big, and drillability longitudinal difference is big, every round trip, not only time-consuming but also expensive.Thus, deep drilling mentions drill bit
Higher requirement and challenge out.Such as Song-liao basin north deep, formation drillability grade Distribution value is distributed in more at 4.87~10 grades
8 grades or more, but it is soft or hard staggeredly serious, and heterogeneity is stronger, the bad adaptability of single drill bit, and efficiency of breaking rock is low.Existing mainstream is bored
Head type has PDC drill bit, rock bit and diamond bit.PDC drill bit soft-medium hard formation have higher rate of penetration and
Service life, but PDC composite sheet is more crisp, cannot bear higher bit pressure and impact, easily collapses in hard, extremely hard formation and boulder bed
Folding, broken teeth and skidding.The impact cutting broken rock mode of rock bit and the hard-metal insert with preferable toughness, can be in hard place
Layer uses, but the wearability of tooth is poor, and rate of penetration is lower, and bit life is shorter.Traditional diamond bit passes through grinding
Mode broken rock can overcome and arrive extremely hard formation firmly, but extremely low in soft-medium hard formation efficiency of breaking rock.Impregnated diamond simultaneously
Highly significant, such as diamond impregnated block tire are influenced on the efficiency of breaking rock of diamond bit and service life with the compatibility on stratum
Body hardness be higher than stratum need hardness, carcass is not easy to wear, diamond polishing after cannot timely exposure, easily have skidded not into
Ruler phenomenon；If hardness needed for tyre body hardness is lower than stratum, the easy premature wear of carcass, diamond particles plate not because of carcass
Firmly, meeting early fallout, causes bit life very low.Therefore, developing one kind can overcome strong and weak abrasiveness to mix, soft and hard alternation
The high efficiency drill on stratum is very urgent and important.
Summary of the invention
It is an object of the present invention to provide cutting-abrasive type diamond impregnated blocks and PDC composite sheet to mix diamond setting head, this
Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head for solving existing PDC drill bit, rock bit and gold
Hard rock drill bit adapts to the more single problem in stratum.
The technical solution adopted by the present invention to solve the technical problems is: this cutting-abrasive type diamond impregnated block and
It is wing formula drill bit that PDC composite sheet, which mixes diamond setting head, and using trapezoidal wing, bizet section shape is straight line-circular arc-circular arc type bipyramid
Bizet section, the diamond grit of impregnated diamond wing matrix are 46 mesh, concentration 80%, tyre body hardness 40HRC, first
Impregnated piece and second impregnated piece is alternately arranged on each operator wing, secondary wing, and distribution has shaft bottom all standing ability, and first is pregnant
The diamond grit of insert is 80 mesh, concentration 120%, tyre body hardness 60HRC；Second impregnated piece of diamond grit is 60
Mesh, concentration 100%, tyre body hardness 45HRC；It operates there are three the wings, drill bit bottom surface is divided into three parts, phase by three operator wings
The angle of adjacent two operators wing is 100O-140O, wherein the first operator wing has super roof construction, the length of the second operator wing is less than
The length of the first operator wing, length of the third operator chord degree less than the second operator wing, 1 round wedge shape PDC of bit central arrangement
Tooth, the first operator wing, the second operator wing are respectively arranged 2 cylinder PDC teeth, and the third operator wing is disposed with three cylinder PDC
Tooth, above-mentioned 7 cylinders PDC tooth are distributed in circle wedge shape PDC tooth rim and enclose, and the circle wedge shape PDC tooth point and cylinder PDC tooth are all provided with
It is set to back rake angle 10~40O, angle of heel 10~30O。
Cutting-abrasive type diamond impregnated block and PDC composite sheet are mixed diamond setting head and are radiated using central ports in above scheme
Shape forces pressure type bendway hydraulic structure, and sink is distributed on bit operation face, is divided into high pressure sink and two kinds of low pressure sink, high pressure
Sink entrance section product is bigger than low pressure sink entrance section product, and as sink extends outwardly, the sectional area of high pressure sink gradually subtracts
It is small, and low pressure water slot cross-section product is gradually expanded, and forms high-low pressure flow field in wing two sides and passes through operator for cooling down and cleaning
The wing, secondary wing cutting output proportion sink area of passage.
The angle of the two neighboring operator wing is 120 in above schemeO。
Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head rock breaking method in above scheme:
When boring chance extremely hard formation, second impregnated piece first wears with impregnated diamond wing matrix, first impregnated piece of exposure
It is higher, by first impregnated piece of broken rock in a manner of grinding；When boring chance hard formation, bit pressure, first impregnated piece of acceleration are increased
Abrasion, first impregnated piece and second impregnated piece of working face tend to concordantly, and second impregnated piece of carcass is matched with such hard formation, golden
Hard rock goes out sword, efficiency crushing rock in time；When bore meet medium ground when, further increase bit pressure, first impregnated piece, second impregnated
Block, impregnated diamond wing matrix are by cutting and being ground combined-breaking rock；When bore meet soft-medium hard formation when, due to first impregnated
Block, the differential cutting structures of the more height of formation between second impregnated piece and impregnated diamond wing matrix, first wedging stratum, in turn
The high speed broken rock in a manner of cutting；In entire rock break-off process, first impregnated piece, second impregnated can be competed according to formation drillability
Participate in work, the main cutting of autonomous optimization and wearing terrain and broken rock mode, and then realize the adaptive of drill bit and stratum.
The invention has the following advantages:
1, straight line-circular arc-circular arc type bipyramid bizet section that the present invention uses ensure that the stability of drill bit；Trapezoidal wing
The stress collection that structure avoids drill bit wing neutralizes collapses folding in early days；The cloth for the super roof construction of the wing and the immediate vicinity PDC composite sheet of operating
It sets, enhances the cutting power to center and neighbouring rock, be actively crushed center portion rock, avoid anti-coring.Three kinds of carcass strengths
It is distributed rationally with the cutting tooth of diamond concentration, makes drill bit that there is adaptive formation characteristics.
2, the present invention forces pressure type bendway hydraulic structure using central ports, is effectively ensured on cooling and cleaning wing every
Diamond, and avoid abrasion after drill bit water route be cut off and cause abrasion the problem of.
3, the present invention can effectively be crushed strong and weak abrasiveness and mix, and the stratum of soft and hard alternation has superpower wear-resistant；Can have
Broken 8 grades or more of the hard formation of effect；5 grades or less soft-medium hard formations can be effectively crushed.
Detailed description of the invention
Fig. 1 is drill bit profile morphology of the present invention and super roof construction figure；
Fig. 2 is drill bit structure figure of the present invention；
Fig. 3 is cylinder PDC tooth schematic diagram in the present invention；
Fig. 4 is circle wedge shape PDC tooth schematic diagram in the present invention；
Fig. 5 is first impregnated piece of schematic diagram in the present invention；
Fig. 6 is second impregnated piece of schematic diagram in the present invention；
Fig. 7 is trapezoidal wing schematic diagram in the present invention.
In figure: 1- cylinder PDC tooth；2- justifies wedge shape PDC tooth；First impregnated piece of 3-；Second impregnated piece of 4-；5- low pressure water
Slot；6- high pressure sink；7- central ports；The trapezoidal wing of 8-；The operator wing of 9a- first；The operator wing of 9b- second；The operator of 9c- third
The wing；The impregnated diamond wing matrix of 10-；The super roof construction of 11-.
Specific embodiment
The present invention will be further described below with reference to the drawings:
In conjunction with shown in Fig. 1, Fig. 2, Fig. 7, this cutting-abrasive type diamond impregnated block and the mixed diamond setting head of PDC composite sheet are
A kind of wing formula drill bit avoids early stage stress concentration from collapsing folding, use is trapezoidal for the stability and service life for guaranteeing drill bit wing
Wing 8, bizet section shape is straight line-circular arc-circular arc type bipyramid bizet section, using 4 kinds of cutting tooths, respectively two kinds of differences
(first impregnated piece 3, second impregnated piece 4, first impregnated piece is shown in Fig. 5, to the impregnated diamond segment of tyre body hardness and diamond concentration
Two impregnated pieces are shown in Fig. 6), cylindrical PDC tooth 1 and circle wedge shape PDC tooth 2.The diamond grit of impregnated diamond wing matrix 10 is
46 mesh, concentration 80%, tyre body hardness 40HRC, first impregnated piece 3 and second impregnated piece 4 equal on each operator wing, secondary wing
It is alternately arranged, distribution has shaft bottom all standing ability, and first impregnated piece 3 of diamond grit is 80 mesh, concentration 120%, carcass
Hardness is 60HRC；Second impregnated piece 4 of diamond grit is 60 mesh, concentration 100%, tyre body hardness 45HRC, it then follows " cut
It is non-interference during installation to cut tooth ", the principle of " interior thin outer close " " shaft bottom all standing " and " being conducive to waterpower cleaning and cooling ", three
Kind diamond cast material can compete according to formation drillability and participate in work, preferential to select broken rock and wearing part, and realization is adaptive
Answer characteristic.
It operates there are three the wings, drill bit bottom surface is divided into three parts by three operator wings, and the angle of the two neighboring operator wing is
100O-140 O, wherein the first operator wing 9a has super roof construction 11, the length of the second operator wing 9b is less than the first operator wing 9a's
Length, length of the third operator wing 9c length less than the second operator wing 9b, bit central are arranged 1 round wedge shape PDC tooth 2, are reduced
Stress is concentrated, the attacking ability to center core column of reinforcement, this circle wedge shape PDC tooth 2 is located at the first operator wing 9a simultaneously；The
One operator wing 9a, the second operator wing 9b are respectively arranged 2 cylinder PDC teeth 1, and third operator wing 9c is disposed with three cylinders
PDC tooth 1, above-mentioned 7 cylinder PDC tooth 1 are distributed in around circle wedge shape PDC tooth 2, the circle wedge shape PDC tooth 2 and cylinder PDC
Tooth 1 is disposed as back rake angle 10~40O, angle of heel 10~30O, the cutting power to center and neighbouring rock is strengthened, it is actively broken
Detritus stem.Circle wedge shape PDC tooth is shown in that Fig. 4, cylindrical PDC tooth are shown in Fig. 3.
The present invention radiates shape using central ports 7 and forces pressure type bendway hydraulic structure, and sink is distributed on bit operation face,
It is divided into high pressure sink 6 and 5 two kinds of low pressure sink.6 entrance section of high pressure sink product is bigger than low pressure sink 5；But as sink is outside
Extend, the sectional area of high pressure sink 6 is gradually reduced, and 5 sectional area of low pressure sink is gradually expanded, and forms height in wing two sides
Flow field is pressed, every diamond particles and cutting tooth are cooled down and clean, the flow-passing surface of sink is matched according to the cutting output of major-minor wing
Product.
The diamond grain of two kinds of diamond impregnated blocks (first impregnated piece 3, second impregnated pieces 4) and matrix itself in the present invention
Degree, concentration and carcass strength are different, should be designed according to the drillability range on stratum.This programme is for Song-liao basin
Deeper formation rock-drillability index value is distributed in 4.87~10 grades, is distributed in 8 grades or more, soft or hard staggeredly more serious, heterogeneity pole more
What strong feature was designed.First impregnated piece 3 of diamond grit be 80 mesh, concentration 120%, tyre body hardness 60HRC,
It is mainly used for overcoming firm hard formation；Second impregnated piece 4 of diamond grit is 60 mesh, and concentration 100%, tyre body hardness is
45HRC mainly overcomes hard formation；Impregnated 10 diamond grit of diamond wing matrix is 46 mesh, concentration 80%, tyre body hardness
For 40HRC, it is mainly used for medium ground, mixes broken rock by the way of cutting and grinding at this time.For soft-medium hard formation, benefit
It is broken with diamond impregnated block cutting.The adaptive formation characteristics of drill bit is realized by cutting structure and drilling parameter cooperation.
When boring chance extremely hard formation, second impregnated piece 4 and drill bit wing matrix (impregnated diamond wing matrix 10) meeting Fast Wearing, the
One impregnated piece of 3 exposure is some higher, relies primarily on first impregnated piece 3 broken rock in a manner of grinding.Hard-extremely hard formation is met when boring
When, the abrasiveness of rock reduces, and first impregnated piece of 3 carcass is not easy to be worn, and new diamond is not easy out sword, easily cause skidding and
Drilling speed reduces, and should increase bit pressure at this time, first impregnated piece of 3 accelerated wear test, and first impregnated piece 3 and second impregnated piece of 4 working face become
In concordant, second impregnated piece 4 of carcass is more matched with such stratum, and diamond can go out sword, efficient rock-breaking in time.In brill is met
Firmly-hard formation when, should further increase bit pressure, first impregnated piece 3 and second impregnated piece of 4 exposure it is higher, with what is cut and be ground
Mode mixes broken rock, when if there is skidding or cut motionless, first impregnated piece 3 and second impregnated piece of 4 Fast Wearing, and and base
Body running face is concordant, and the carcass of matrix is matched with such stratum, and diamond can go out sword, efficient rock-breaking in time.Soft arrive is met when boring
When medium ground, more height grades are formed between impregnated diamond wing matrix 10 due to first impregnated piece 3, second impregnated piece 4
The cutting structure of difference, being capable of effectively wedging stratum, and then the high speed broken rock in a manner of cutting.In entire rock break-off process, no
Impregnated piece with tyre body hardness and diamond concentration can compete participation work according to formation drillability, as long as tyre body hardness and Buddha's warrior attendant
Highly concentrated impregnated piece of stone higher, this impregnated piece ratio bit pressure born will increase, and the rate of wear is accelerated, the work of drill bit
Face tends to concordantly, and impregnated piece of low competition of tyre body hardness participates in broken rock.Drill bit can optimize main cutting according to the drillability on stratum
And wearing part, and then realize the adaptivity of drill bit and stratum.
Claims (3)
1. a kind of cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head, it is characterised in that: this cutting-grinding
It is wing formula drill bit that type diamond impregnated block and PDC composite sheet, which mix diamond setting head, and using trapezoidal wing (8), bizet section shape is
Straight line-circular arc-circular arc type bipyramid bizet section, the diamond grit of impregnated diamond wing matrix are 46 mesh, concentration 80%,
Tyre body hardness is 40HRC, and first impregnated piece (3) and second impregnated piece (4) are alternately arranged on each operator wing, secondary wing, point
Cloth has a shaft bottom all standing ability, and the diamond grit of first impregnated piece (3) is 80 mesh, concentration 120%, and tyre body hardness is
60HRC；The diamond grit of second impregnated piece (4) is 60 mesh, concentration 100%, tyre body hardness 45HRC；The operator wing has three
A, drill bit bottom surface is divided into three parts by three operator wings, and the angle of the two neighboring operator wing is 100 ° -140 °, wherein first
The wing (9a) is operated with super roof construction (11), length of the length less than the first operator wing (9a) of the second operator wing (9b), third
Length of the wing (9c) length of operating less than the second operator wing (9b), bit central 1 round wedge shape PDC tooth (2) of arrangement, the first operator
The wing (9a), the second operator wing (9b) are respectively arranged 2 cylinder PDC teeth (1), and the third operator wing (9c) is disposed with three cylinders
PDC tooth (1), 7 cylinder PDC teeth (1) are distributed in around circle wedge shape PDC tooth (2), the circle wedge shape PDC tooth (2) and circle
Cylindricality PDC tooth (1) is disposed as 10~40 ° of back rake angle, 10~30 ° of angle of heel；
The cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head and force pressure using central ports (7) radiation shape
Formula bendway hydraulic structure, sink are distributed on bit operation face, are divided into high pressure sink (6) and (5) two kinds of low pressure sink, high pressure
Sink (6) entrance section product is bigger than low pressure sink (5) entrance section product, as sink extends outwardly, the section of high pressure sink (6)
Product is gradually reduced, and low pressure sink (5) sectional area is gradually expanded, and high-low pressure flow field is formed in wing two sides, for cooling and clear
It washes, the area of passage of sink is matched by the cutting output of the operator wing, secondary wing.
2. cutting according to claim 1-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head, feature exists
In: the angle of the two neighboring operator wing is 120 °.
3. cutting according to claim 2-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head, feature exists
In: the cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head rock breaking method:
When boring chance extremely hard formation, second impregnated piece (4) and impregnated diamond wing matrix (10) are first worn, and first impregnated piece
(3) exposure is higher, by first impregnated piece of (3) broken rock in a manner of grinding；When boring chance hard formation, increasing bit pressure, first
Impregnated piece of (3) accelerated wear test, first impregnated piece (3) and second impregnated piece of (4) working face tend to concordantly, second impregnated piece (4)
Carcass is matched with such hard formation, and diamond goes out sword, efficiency crushing rock in time；When boring chance medium ground, further increase
Bit pressure, first impregnated piece (3), second impregnated piece (4), impregnated diamond wing matrix (10) it is broken by cutting and grinding joint
Rock；When boring chance soft-medium hard formation, due to first impregnated piece (3), second impregnated piece (4) and impregnated diamond wing matrix
(10) the differential cutting structure of more height, first wedging stratum, and then the high speed broken rock in a manner of cutting are formed between；Entirely breaking
During rock, first impregnated piece (3), second impregnated piece (4) can compete participation work according to formation drillability, and autonomous optimization is main
Cutting and wearing terrain and broken rock mode, and then realize the adaptive of drill bit and stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810038347.3A CN108194026B (en) | 2018-01-13 | 2018-01-13 | Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810038347.3A CN108194026B (en) | 2018-01-13 | 2018-01-13 | Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108194026A CN108194026A (en) | 2018-06-22 |
| CN108194026B true CN108194026B (en) | 2019-07-30 |
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| CN201810038347.3A Active CN108194026B (en) | 2018-01-13 | 2018-01-13 | Cutting-abrasive type diamond impregnated block and PDC composite sheet mix diamond setting head |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324344B (en) * | 2020-12-04 | 2023-04-07 | 中国石油天然气集团有限公司 | Mixed drill bit for plowing, cutting and grinding composite rock breaking |
| CN116104421B (en) * | 2023-04-04 | 2023-06-20 | 成都迪普金刚石钻头有限责任公司 | PDC mixed-inlaid drill bit suitable for coring of hard broken stratum |
| CN116517475B (en) * | 2023-06-30 | 2023-10-03 | 西南石油大学 | Novel wear-resistant and anti-collision beak-shaped tooth multi-blade PDC drill bit |
| CN116591693B (en) * | 2023-07-14 | 2023-10-03 | 中铁九局集团第七工程有限公司 | Tunnel pipe shed construction method |
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| CN202017456U (en) * | 2011-05-05 | 2011-10-26 | 四川川石金刚石钻头有限公司 | High-speed impregnated drill bit |
| CN205532307U (en) * | 2016-04-29 | 2016-08-31 | 四川奥格特金刚石钻头有限公司 | Pregnant body diamond bit that inlays of column |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015003426A (en) * | 2013-06-20 | 2015-01-08 | 株式会社アレン | Core drill |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5699868A (en) * | 1995-05-11 | 1997-12-23 | Camco Drilling Group Limited | Rotary drill bits having nozzles to enhance recirculation |
| CN2667137Y (en) * | 2003-11-20 | 2004-12-29 | 衡水蛟龙金刚石钻头有限公司 | Multifunction diamond inserted tooth protection composite sheet drilling bit |
| CN201588553U (en) * | 2010-01-05 | 2010-09-22 | 四川川石金刚石钻头有限公司 | Multifunctional compound drill bit |
| CN202017455U (en) * | 2011-05-05 | 2011-10-26 | 四川川石金刚石钻头有限公司 | Compound impregnated bit |
| CN202017456U (en) * | 2011-05-05 | 2011-10-26 | 四川川石金刚石钻头有限公司 | High-speed impregnated drill bit |
| CN205532307U (en) * | 2016-04-29 | 2016-08-31 | 四川奥格特金刚石钻头有限公司 | Pregnant body diamond bit that inlays of column |
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|---|---|
| CN108194026A (en) | 2018-06-22 |
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Effective date of registration: 20210301 Address after: No.1166, Puhe Road, industrial East District, Xindu District, Chengdu, Sichuan 610500 Patentee after: CHENGDU DEEP DIAMOND BIT Co.,Ltd. Address before: 163319 development road 199, Daqing high tech Development Zone, Heilongjiang Patentee before: NORTHEAST PETROLEUM University |