CN109339709A - New type compound cone PDC roller cone drill bit - Google Patents
New type compound cone PDC roller cone drill bit Download PDFInfo
- Publication number
- CN109339709A CN109339709A CN201811471911.7A CN201811471911A CN109339709A CN 109339709 A CN109339709 A CN 109339709A CN 201811471911 A CN201811471911 A CN 201811471911A CN 109339709 A CN109339709 A CN 109339709A
- Authority
- CN
- China
- Prior art keywords
- pdc
- drill bit
- cone
- along
- roller cone
- 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
- 150000001875 compounds Chemical class 0.000 title claims 16
- 229910003460 diamond Inorganic materials 0.000 claims description 18
- 239000010432 diamond Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000036346 tooth eruption Effects 0.000 claims 3
- 230000007423 decrease Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 20
- 239000002131 composite material Substances 0.000 abstract description 15
- 239000011435 rock Substances 0.000 abstract description 13
- 239000011229 interlayer Substances 0.000 abstract description 10
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 239000006071 cream Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 208000035874 Excoriation Diseases 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000003467 diminishing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 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
- E21B10/08—Roller bits
- E21B10/16—Roller bits characterised by tooth form or arrangement
-
- 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
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
- E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of novel cone PDC cutter composite drill bits again, it includes bit body and the circumferential palm and PDC wing being disposed in an evenly spaced relation on the bit body, along drill bit, axially free end bearing outstanding is sealedly connected with gear wheel to the palm, and the bizet of the PDC wing is equipped with PDC cutting tooth；Wherein, the palm is greater than PDC wing along the length of the axially projecting extension of drill bit along the length of the axially projecting extension of drill bit, and gear wheel is less than the PDC cutting tooth working surface diameter radially projecting along drill bit along the radially projecting working surface diameter of drill bit, therefore, the novel torque for boring PDC cutter composite drill bit again is between rock bit and PDC drill bit, and it is compared with conventional PDC drill bit, it is more conducive to stablizing drilling, it is used suitable for directional well in hold angle and deflecting, especially in soft or hard alternate interlayer, in gravel class interlayer stratum, it is with preferable ground adaptability and drilling controllability.
Description
Technical field
The present invention relates to petroleum drilling technology fields, and in particular to a kind of novel cone PDC cutter composite drill bit again.
Background technique
With going deep into for oil-gas mining, so that the reservoir media of remaining oil is more complicated, original homogeneous class stratum is increasingly
It reducing, the inhomogeneous formations such as soft or hard interlayer, gravel class interlayer are increasing, and in drilling process, reduce drill bit unit drilling depth
The main influence factor of cost is exactly the service life of drill bit rate of penetration and drill bit.
The extensive PDC drill bit of scene use scope and rock bit are not able to satisfy the above inhomogeneous formation generally at present
Drilling, and chip hold down effect, mud drum phenomenon, rock bit be easy failure, PDC drill bit cutting tooth be easy to happen brittle fracture with
And torque it is big phenomena such as restrict conventional bit in the application of inhomogeneous formation, therefore, need to research and develop one kind can be suitable for it is non-
Homogeneous formation and the high new drill of service life long rate of penetration adapt to the requirement of site operation.
Summary of the invention
In view of the problems of the existing technology the present invention, provides a kind of novel cone PDC cutter composite drill bit again, solves existing
PDC drill bit and rock bit are not able to satisfy the technical issues of above inhomogeneous formation drilling.
In order to solve the above technical problems, the present invention provides a kind of novel cone PDC cutter composite drill bit again comprising bit body
And the circumferential palm and PDC wing being disposed in an evenly spaced relation on the bit body, the palm along drill bit axially it is outstanding from
Gear wheel is sealedly connected with by end bearing, the bizet of the PDC wing is equipped with PDC cutting tooth；Wherein, the palm is along drill bit axial direction
The prominent length extended is greater than PDC wing along the length of the axially projecting extension of drill bit, i.e., the described gear wheel is axially outstanding along drill bit
Cutting plane protrudes from the PDC cutting tooth along drill bit axially cutting plane outstanding, and the work that gear wheel is radially projecting along drill bit
Make the face diameter working surface diameter radially projecting along drill bit less than PDC cutting tooth.
Preferably, the PDC blade surface has plated diadust.
Preferably, it is studded on the ring side working face of the gauge body of the PDC wing and is evenly distributed with diamond reinforcement tooth, institute
Diamond is stated to reinforce tooth to protrude from the height of ring side working face being 1.5-3 millimeters.
Preferably, the diamond reinforcement tooth is distributed in by high and low on the ring side working face of the gauge body.
Preferably, the gear wheel includes multistage along the diminishing male cone (strobilus masculinus) of free end orient diameter, every level-one outer cone
Carbide button is evenly distributed on face, and with the diminution of male cone (strobilus masculinus) diameter, the diameter of the carbide button is sequentially reduced.
Preferably, the gear wheel upper end is equipped with gear wheel mounting portion, and the gear wheel mounting portion is mounted on tooth by sealing bearing
Wheel is recessed in the bearing mounting groove of setting on interconnecting piece free end.
Preferably, hollow in the palm to be provided with shoe cream room, the shoe cream room passes through the axis of oil circuit and gear wheel interconnecting piece
Hold mounting groove connection setting.
Preferably, the PDC wing extends radially inwardly and blends in the center point of bit body, and the blending center is equipped with
Central ports.
Preferably, the root of each PDC wing is respectively equipped with circumference hydrophthalmia, and the circumference hydrophthalmia is circle with central ports
The heart is circumferentially distributed on same diameter annulus.
Novel cone PDC cutter composite drill bit again of the present invention, forms two by two sets of cutting structure Combinatorial Optimizations
Grade cutting mode, the ladder-like wellbore after two-stage cutting is coaxial ladder circle cylindricality, and the PDC cutting tooth is in bit operation
The oscillation crosswise of drill bit can be reduced, and reduce skidding in the counteracting force of the second working face one transverse direction of generation, can effectively mentioned
The service life of high rate of penetration and drill bit, and the novel torque for boring PDC cutter composite drill bit again of the present invention is in gear wheel
Between drill bit and PDC drill bit, and it is more conducive to stablizing drilling compared with conventional PDC drill bit, is suitable for directional well and exists
It uses when hold angle and deflecting, especially in soft or hard alternate interlayer, gravel class interlayer stratum, is adapted to preferable stratum
Property and drilling controllability.
Detailed description of the invention
Fig. 1 is the novel main schematic diagram for boring PDC cutter composite drill bit again of the present invention；
Fig. 2 is the novel bottom view for boring PDC cutter composite drill bit again of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of the present invention provides a kind of novel cone 4 composite drill bit of PDC cutter again comprising bit body 1 and circumferential direction
4 palm 2 of gear wheel and the PDC wing 3 being disposed in an evenly spaced relation on the bit body 1,4 palm 2 of gear wheel are axially prominent along drill bit
Free end bearing out is sealedly connected with gear wheel 4, and the bizet of the PDC wing 3 is equipped with PDC cutting tooth 5；Wherein, the gear wheel 4
Palm 2 is greater than length of the PDC wing 3 along the axially projecting extension of drill bit, i.e., the described gear wheel 4 along the length of the axially projecting extension of drill bit
Along drill bit, axially cutting plane outstanding protrudes from the PDC cutting tooth 5 along drill bit axially cutting plane outstanding, and gear wheel 4
The working surface diameter radially projecting along drill bit is less than the working surface diameter radially projecting along drill bit of PDC cutting tooth 5.
Two-stage cutting mode is formd by two sets of cutting structure Combinatorial Optimizations, the ladder-like wellbore after two-stage cutting is same
Axis ladder circle cylindricality, and the PDC cutting tooth 5 can be in the counteracting of the second working face one transverse direction of generation in bit operation
Power, reduces the oscillation crosswise of drill bit, and reduces skidding, can effectively improve the service life of rate of penetration and drill bit, and this hair
The bright novel torque for boring 4 composite drill bit of PDC cutter again is between 4 drill bit of gear wheel and PDC drill bit, and itself and routine
PDC drill bit compares, and is more conducive to stablizing drilling, uses suitable for directional well in hold angle and deflecting, especially soft or hard
In alternate interlayer, gravel class interlayer stratum, with preferable ground adaptability and drilling controllability.
Embodiment 1:
It is not able to satisfy the technical issues of above inhomogeneous formation is crept into order to solve existing PDC drill bit and 4 drill bit of gear wheel.
The embodiment of the present invention 1 provides a kind of novel cone 4 composite drill bit of PDC cutter again, as depicted in figs. 1 and 2 comprising bit body 1,
4 palm 2 of gear wheel, PDC wing 3 and gear wheel 4 and PDC cutting tooth 5.
As depicted in figs. 1 and 2,4 palm 2 of gear wheel and PDC wing 3 are circumferentially disposed in an evenly spaced relation in the bit body 1
On, along drill bit, axially free end bearing outstanding is sealedly connected with gear wheel 4 to 4 palm 2 of gear wheel, specifically, the gear wheel 4 connects
Recess is equipped with bearing mounting groove on socket part free end, and 4 upper end of gear wheel is equipped with 4 mounting portion of gear wheel, and 4 mounting portion of gear wheel is logical
It crosses sealing bearing to be mounted in the bearing mounting groove, so as to be freely rotated in 4 palm 2 of gear wheel.
Meanwhile it is hollow in 4 palm 2 of gear wheel be provided with shoe cream room, the shoe cream room passes through oil circuit and 4 interconnecting piece of gear wheel
Bearing mounting groove be connected to setting.During the work time, the vibration of drill bit will lead to swabbing action and the liquid row of Bearing inner
It puts, meanwhile, mud pressure compresses oil sac, enters the lubricating oil in oil sac by oil circuit and lubricates bearing in bearing.
As depicted in figs. 1 and 2, the gear wheel 4 includes multistage along the diminishing male cone (strobilus masculinus) of free end orient diameter, often
Carbide button 41 is evenly distributed on level-one male cone (strobilus masculinus), and with the diminution of male cone (strobilus masculinus) diameter, the diameter of the carbide button 41 successively subtracts
It is small.In order to improve the working performance of carbide button 41, honeycomb structure polycrystalline diamond, wearability and polycrystalline diamond are preferably used
Composite sheet is suitable, and toughness, shock resistance are remarkably reinforced.
The bizet of the PDC wing 3 be equipped with PDC cutting tooth 5, the PDC cutting tooth 5 not only with diamond hardness and
Wearability, and shock resistance and good self-sharpening with cemented carbide material, due to the wearability of polycrystalline diamond
It is far longer than cemented carbide material, makes the abrasion loss of hard alloy be greater than polycrystalline diamond in drilling, make working lining always
Certain exposure amount is kept, therefore PDC cutting tooth 5 has good sharpness.
Abrasion is caused to avoid the problem that generation friction between PDC wing 3 and drilling, 3 surface of PDC wing plates
There is diadust, further, as shown in Figure 1, studding on the ring side working face of the gauge body 31 of the PDC wing 3 uniformly
Diamond is distributed with and reinforces tooth 32, reinforces tooth 32 by the way that diamond is arranged on its surface, is further ensured that gauge body 31 will not be ground
Damage, the diamond reinforce tooth 32 to protrude from the height of ring side working face being 1.5-3 millimeters, and preferred, and the diamond adds
Strong tooth 32 is distributed in by high and low on the ring side working face of the gauge body 31, therefore, when the higher diamond of protrusion reinforces tooth
After 32 are worn, prominent lower diamond, which reinforces tooth 32, to carry out secondary abrasion protection to gauge body 31.
As shown in Fig. 2, the PDC wing 3 extends radially inwardly and blends in the center point of bit body 1, in the blending
The heart is equipped with central ports 6, meanwhile, the root of each PDC wing 3 is respectively equipped with circumference hydrophthalmia 7, and the circumference hydrophthalmia 7 is in
Edema with the heart involved eye 6 is that the center of circle is circumferentially distributed on same diameter annulus, and the circumference hydrophthalmia 7 can be to 4 tooth of gear wheel and PDC cutting tooth
5 carry out forcing cooling and cleaning, so that it is kept higher rate of penetration, the central ports 6 can eject high-pressure jet stream
Body is logical to squeeze into rock microcrack, is formed " water wedge ", expands microcrack, so that rock strength be made to substantially reduce, reach kata-rocks
The purpose of stone.
As shown in Fig. 2, 4 palm 2 of gear wheel is greater than PDC wing 3 along drill bit shaft along the length of the axially projecting extension of drill bit
To the length of prominent extension, i.e., along drill bit, axially cutting plane outstanding protrudes from the PDC cutting tooth 5 along brill to the described gear wheel 4
Axially projecting cutting plane, meanwhile, gear wheel 4 is less than PDC cutting tooth 5 along drill bit along the radially projecting working surface diameter of drill bit
Radially projecting working surface diameter.
In actual drilling, the impact grinding shaft bottom rock stratum first of gear wheel 4, this is level-one cutting, later PDC cutting tooth 5
Shearing-crushing rock of borehole, this is secondary cutting.Gear wheel 4 can be crushed wellbore central area when work, cooperate with central ports 6
Hydraulic jet impact, so that breaking off a small diameter borehole in advance, and the cutting tooth of gear wheel 4 can impact minor diameter well simultaneously
The borehole wall of eye, so that the rock of borehole of small diameter borehole cracks, rock strength is greatly lowered, so that the second level is cut
The PDC cutting tooth 5 for cutting structure is easier to cut the stratum, (rock at this time after PDC cutting tooth 5 is with cut mode fractured rock
Stone can be cracked, be generated so the landwaste generated slides shearing than only PDC cutting tooth 5 due to being impacted in advance by gear wheel 4
Landwaste it is big), the drilling fluid that circumference hydrophthalmia 7 ejects can be taken away the second cutting face, prevent chip hold down effect and mud drum existing
The generation of elephant.
Ladder-like wellbore after two-stage cutting is coaxial ladder circle cylindricality, so that drilling fluid can generate an equivalent guiding
Angle can effectively reduce local head loss according to fluid mechanics principle.The fillet of ladder junction can reduce drilling fluid in well
Hydraulic loss in the process of circulation reduces the consumption costs of Surface power drive equipment indirectly, and is conducive to bottom-hole cleaning landwaste, into
And improve drilling efficiency.Meanwhile the PDC cutting tooth 5 can generate a transverse direction in the second working face in bit operation
Counteracting force, reduces the oscillation crosswise of drill bit, and reduces skidding.
Two-stage cutting mode is formd by two sets of cutting structure Combinatorial Optimizations, can effectively improve rate of penetration and drill bit
Service life, and the novel torque for boring 4 composite drill bit of PDC cutter again of the present invention be in 4 drill bit of gear wheel and PDC drill bit it
Between, and it is more conducive to stablizing drilling, make suitable for directional well in hold angle and deflecting compared with conventional PDC drill bit
With controllable with preferable ground adaptability and drilling especially in soft or hard alternate interlayer, gravel class interlayer stratum
Property.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471911.7A CN109339709A (en) | 2018-12-04 | 2018-12-04 | New type compound cone PDC roller cone drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471911.7A CN109339709A (en) | 2018-12-04 | 2018-12-04 | New type compound cone PDC roller cone drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109339709A true CN109339709A (en) | 2019-02-15 |
Family
ID=65320339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811471911.7A Pending CN109339709A (en) | 2018-12-04 | 2018-12-04 | New type compound cone PDC roller cone drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109339709A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681122A (en) * | 2019-03-03 | 2019-04-26 | 兰州城市学院 | A kind of two rank step scraper |
| CN109898998A (en) * | 2019-03-03 | 2019-06-18 | 兰州城市学院 | A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row |
| CN111395971A (en) * | 2020-04-20 | 2020-07-10 | 江苏景源万河环境科技有限公司 | Gravel drill |
| CN113445916A (en) * | 2021-08-11 | 2021-09-28 | 中冀建勘集团有限公司 | Construction method for correcting hole sweeping deviation of small-diameter deep well bedrock section |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375753Y (en) * | 1998-03-19 | 2000-04-26 | 江汉石油管理局钻头厂 | Single-roller bit |
| US20150075868A1 (en) * | 2013-09-17 | 2015-03-19 | Kevin Dewayne Jones | Subsurface drilling tool |
| CN107575167A (en) * | 2017-10-26 | 2018-01-12 | 兰州城市学院 | One kind is non-to wash multiple cone PDC cutter composite drill bit certainly |
| CN107605407A (en) * | 2017-09-27 | 2018-01-19 | 四川奥格特金刚石钻头有限公司 | A kind of PDC cutter and the composite drill bit containing the PDC cutter |
| CN108625788A (en) * | 2018-07-10 | 2018-10-09 | 西南石油大学 | A kind of novel pdc, gear wheel composite drill bit |
| CN209212160U (en) * | 2018-12-04 | 2019-08-06 | 长江大学 | It is novel to bore PDC cutter composite drill bit again |
-
2018
- 2018-12-04 CN CN201811471911.7A patent/CN109339709A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375753Y (en) * | 1998-03-19 | 2000-04-26 | 江汉石油管理局钻头厂 | Single-roller bit |
| US20150075868A1 (en) * | 2013-09-17 | 2015-03-19 | Kevin Dewayne Jones | Subsurface drilling tool |
| CN107605407A (en) * | 2017-09-27 | 2018-01-19 | 四川奥格特金刚石钻头有限公司 | A kind of PDC cutter and the composite drill bit containing the PDC cutter |
| CN107575167A (en) * | 2017-10-26 | 2018-01-12 | 兰州城市学院 | One kind is non-to wash multiple cone PDC cutter composite drill bit certainly |
| CN108625788A (en) * | 2018-07-10 | 2018-10-09 | 西南石油大学 | A kind of novel pdc, gear wheel composite drill bit |
| CN209212160U (en) * | 2018-12-04 | 2019-08-06 | 长江大学 | It is novel to bore PDC cutter composite drill bit again |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681122A (en) * | 2019-03-03 | 2019-04-26 | 兰州城市学院 | A kind of two rank step scraper |
| CN109898998A (en) * | 2019-03-03 | 2019-06-18 | 兰州城市学院 | A kind of spiral wing additional mechanical supercharging returns the secondary broken rock drill bit of row |
| CN111395971A (en) * | 2020-04-20 | 2020-07-10 | 江苏景源万河环境科技有限公司 | Gravel drill |
| CN113445916A (en) * | 2021-08-11 | 2021-09-28 | 中冀建勘集团有限公司 | Construction method for correcting hole sweeping deviation of small-diameter deep well bedrock section |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190215 |