CN105840103A - Five-blade steel body type polycrystalline diamond compact (PDC) drill bit with auxiliary cutting teeth - Google Patents
Five-blade steel body type polycrystalline diamond compact (PDC) drill bit with auxiliary cutting teeth Download PDFInfo
- Publication number
- CN105840103A CN105840103A CN201610374508.7A CN201610374508A CN105840103A CN 105840103 A CN105840103 A CN 105840103A CN 201610374508 A CN201610374508 A CN 201610374508A CN 105840103 A CN105840103 A CN 105840103A
- Authority
- CN
- China
- Prior art keywords
- tooth
- wing
- drill bit
- body type
- cutting tooth
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
Abstract
The invention discloses a five-blade steel body type polycrystalline diamond compact (PDC) drill bit with auxiliary cutting teeth. The five-blade steel body type PDC drill bit comprises a drill bit upper body (1) and a drill bit lower body (2) with a crown part. The crown part of the drill bit lower body (2) is provided with a first blade (16), a second blade (17), a third blade (18), a fourth blade (19) and a fifth blade (20) clockwise, each blade is provided with front row teeth composed of a plurality of main cutting teeth (10) and rear row teeth composed of a plurality of auxiliary cutting teeth (11), and the main cutting teeth (10) and the auxiliary cutting teeth (11) are equidistantly staggered on a rotating track. Water injection holes (15) are formed in the drill bit upper body (1), the end of the drill bit upper body (1) is in threaded connection with the drill bit lower body (2), and the drill bit lower body (2) is provided with five inclined water holes (12) communicated with the water injection holes (15). According to the technical scheme, the five-blade steel body type PDC drill bit is further improved based on a steel body type PDC drill bit, the working index of the drill bit is obviously improved during the practical production, and the well drilling cost is reduced.
Description
Technical field
The present invention relates to field of oil drilling, especially relate to five wing steel body type of a kind of band cutting pair tooth
PDC drill bit.
Background technology
The PDC drill bit used in petroleum geology drilling well at present mainly has two big classes: a class is by composite teeth
In soldering semi-cylindrical tooth post groove on bit body each wing work surface or pit, bottom rock is made to obtain
The most broken matrix-type PDC drill bit；Another kind of is to power on welding steel tooth post handle at each wing of bit body
Close tooth post to be welded in the perforation of steel column tooth, make bottom rock obtain the most broken steel body type PDC drill bit.
Both drill bits have been obtained for being widely applied, and are constantly being modified.How it is entered
The optimization that row more rationalizes, for improving bit performance, reducing drilling cost has far-reaching meaning
Justice.
Summary of the invention
It is an object of the invention to provide five wing steel body type PDC drill bit of a kind of band cutting pair tooth, this side
Case is the further improvement to steel body type PDC drill bit, significantly improves bit operation when actual production
Index, reduces drilling cost.
For reaching above-mentioned purpose, the present invention is achieved by the following technical solutions.
Five wing steel body type PDC drill bit of a kind of band cutting pair tooth, including drill bit upper body with bizet
Drill bit lower body, it is characterised in that the bizet of described drill bit lower body be provided with along clockwise direction the first wing,
Second wing, the 3rd wing, the 4th wing and the 5th wing, each wing is respectively equipped with by multiple masters
The front toothrow of cutting tooth composition and the rear toothrow of multiple secondary cutting tooth composition, the master on described each wing
Cutting tooth and secondary cutting tooth equidistantly interlock on rotational trajectory；
The inside of described drill bit upper body is provided with water injection hole, the end of drill bit upper body and described drill bit lower body screw thread
Connecting, be provided with five oblique water holes communicated with water injection hole on described drill bit lower body, each oblique water hole is positioned at
Between two adjacent blades；It is provided with nozzle in described oblique water hole, arranges between nozzle and described oblique water hole
There is nozzle cage, sealed nozzle circle is installed between nozzle cage and nozzle.
Further, the main cutting tooth on described first wing and the main cutting tooth on the 4th wing are rotating
Equidistantly staggering on track, the secondary cutting tooth on the first wing and the main cutting tooth on the 4th wing are at rotation rail
Overlap on mark, second and third, main cutting tooth on five wings and secondary cutting tooth respectively with on the first wing
Main cutting tooth and secondary cutting tooth overlap on rotational trajectory.
Further, described first, fourth wing is long wing, second and third, five wings be the short sword wing.
Further, the main cutting tooth on described first wing is five, and secondary cutting tooth is two, described
Main cutting tooth on third and fourth wing is respectively four, and secondary cutting tooth is respectively two, described second,
Main cutting tooth on five wings is respectively three, and secondary cutting tooth is respectively two.
Further, described each wing is respectively equipped with electric welding layer；Described main cutting tooth and secondary cutting
Tooth comprises steel-tooth post respectively and closes tooth, and steel-tooth post soldering, on electric welding layer, closes tooth soldering at steel-tooth post
On.
Further, described steel-tooth post surface is provided with strengthening layer.
Further, described nozzle is interior six side's hard alloy nozzles.
Further, the bizet of described drill bit lower body is provided with multiple gauge teeth group.
Further, described gauge teeth group comprises little gauge composite teeth, gauge carbide button and big gauge and is combined
Tooth.
Further, described drill bit upper body is provided with the apopore communicated with water injection hole.
The present invention is improving bit performance, reduces drilling cost aspect and has a significant beneficial effect: (1)
The teeth consolidating method of wing is improved, each wing is provided with electric welding layer, the method using soldering steel-tooth post
Cloth dental transition adds firmly, and is coated with strengthening layer on steel-tooth post surface and can improve tooth post anti-slurry erosion ability；(2)
Cutting tooth cloth tooth is improved, no longer by monodentate for unit cloth tooth but from brill in units of the tooth group of same footpath
Head center to bit diameter direction cloth tooth, uses and improves cutting tooth with footpath tooth group cloth tooth method of equidistantly interlocking
Efficiency of breaking rock；(3) improvement to rock broken near the borehole wall, each wing uses front arrangement main cutting tooth, after
This isometrical cloth tooth method of interlocking in groups of arrangement pair cutting tooth, makes rock near the borehole wall obtain the most comprehensively
Broken；(4) improvement to bit gauge protection, technical solution of the present invention uses by little gauge composite teeth, guarantor
The gauge teeth group that footpath carbide button and big gauge composite teeth are constituted realizes, and has the most easy to wear, gauge effect
Preferably advantage.
Accompanying drawing explanation
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the front view of five wing steel body type PDC drill bit of a kind of band cutting pair tooth of the present invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the cutting tooth scattergram of Fig. 1.
In figure: 1, drill bit upper body；2, drill bit lower body；3, little gauge closes tooth；4, gauge carbide button；
5, big gauge closes tooth；6, nozzle；7, sealed nozzle circle；8, nozzle cage；9, electric welding layer；10、
Main cutting tooth；11, secondary cutting tooth；12, oblique water hole；13, catching groove；14, apopore；15, note
Water hole；16, the first wing；17, the second wing；18, the 3rd wing；19, the 4th wing；20、
5th wing；21, steel-tooth post；22, tooth is closed；23, strengthening layer.
Detailed description of the invention
With reference to Fig. 1, the inside of drill bit upper body 1 is provided with water injection hole 15, the outside of drill bit upper body 1 be provided with
The apopore 14 that water injection hole 15 communicates, threadeds with drill bit lower body 2 and is formed in the end of drill bit upper body 1
Have for spacing catching groove 13, drill bit lower body 2 is provided with five oblique water holes communicated with water injection hole 15
12, each oblique water hole 12 is between two adjacent blades；Tiltedly it is provided with nozzle 6, nozzle in water hole 12
It is provided with nozzle cage 8 between 6 and described oblique water hole 12, between nozzle cage 8 and nozzle 6, nozzle is installed
Sealing ring 7.This purging system of the present invention can be more thoroughly by apopore 14 and oblique water hole 12
Clean drill bit.
In conjunction with Fig. 2, the bizet at drill bit lower body 2 is provided with the first wing 16, second on along clockwise direction
Wing the 17, the 3rd wing the 18, the 4th wing 19 and the 5th wing 20, first, fourth wing 16,19 is
Long wing, second and third, five wings 17,18,20 be the short sword wing, each wing is respectively equipped with by many
The front toothrow of individual main cutting tooth 10 composition and the rear toothrow of multiple secondary cutting tooth 11 composition, each wing
On main cutting tooth 10 and secondary cutting tooth 11 equidistantly interlock on rotational trajectory.
Specifically: the main cutting tooth 10 on the first wing 16 and the main cutting tooth 10 on the 4th wing 19
Rotational trajectory equidistantly staggers, the secondary cutting tooth 11 on the first wing 16 and the master on the 4th wing 19
Cutting tooth 10 overlaps on rotational trajectory；Second and third, main cutting tooth on five wings 17,18,20
10 cut tooth 11 in rotation with the main cutting tooth 10 on the first wing 16 and pair respectively with secondary cutting tooth 11
Overlap on track.
Wherein: the main cutting tooth 10 on the first wing 16 is five, secondary cutting tooth 11 is two；3rd,
Main cutting tooth 10 on four wings 18,19 is respectively four, and secondary cutting tooth 11 is respectively two；The second,
Main cutting tooth 10 on five wings 17,20 is respectively three, and secondary cutting tooth 11 is respectively two.
This five wing structures of technical solution of the present invention, no longer with monodentate for unit cloth tooth but with same footpath
Tooth group is unit equidistantly interlocks to bit diameter direction cloth tooth from bit central.Tooth group with the first wing 16
On the basis of cloth tooth, the tooth group of the tooth group of the 4th wing 19 and the first wing 16 staggers cloth tooth, other wings
By the first wing 16 cloth tooth, substantially increase the efficiency of breaking rock of cutting tooth.Before each wing uses, arrangement is main
Cutting tooth 10, this isometrical cloth toothing that interlocks in groups of rear arrangement pair cutting tooth 11, is attached for the borehole wall
The improvement of nearly broken rock, can make rock near the borehole wall obtain more efficiently the most broken.
The bizet of drill bit lower body 2 is provided with and is combined by little gauge composite teeth 3, gauge carbide button 4 and big gauge
The advantages such as the gauge teeth group of tooth 5 composition, has the most easy to wear, and gauge effect is more preferable.
With reference to Fig. 3, each wing is respectively equipped with electric welding layer 9；Main cutting tooth 10 and secondary 11 points of tooth of cutting
Not being made up of steel-tooth post 21 and conjunction tooth 22, steel-tooth post 21 soldering, on electric welding layer 9, closes tooth 22
Soldering is on steel-tooth post 21, and this teeth consolidating mode strengthens the teeth consolidating of steel body type PDC drill bit.In order to improve
The anti-slurry erosion ability of steel-tooth post 21, can be coated with strengthening layer 23 on steel-tooth post 21 surface.
Obviously, those skilled in the art can carry out various change and deformation without deviating from this to the present invention
The spirit and scope of invention.So, if these changes of the present invention and deformation belong to right of the present invention and want
Ask and within the scope of equivalent technologies, then the present invention also comprises these change and modification.
Claims (10)
1. five wing steel body type PDC drill bit of band cutting pair tooth, including drill bit upper body (1) and band
There is the drill bit lower body (2) of bizet, it is characterised in that the bizet of described drill bit lower body (2) is provided with clockwise
First wing (16), the second wing (17), the 3rd wing (18), the 4th wing (19) and the 5th cutter
The wing (20), each wing is respectively equipped with the front toothrow being made up of multiple main cutting teeth (10) and multiple
The rear toothrow that secondary cutting tooth (11) forms, the main cutting tooth (10) on described each wing and secondary cutting
Tooth (11) equidistantly interlocks on rotational trajectory；
The inside of described drill bit upper body (1) is provided with water injection hole (15), the end of drill bit upper body (1) and institute
State drill bit lower body (2) threaded, described drill bit lower body (2) is provided with five and water injection hole (15)
The oblique water hole (12) communicated, each oblique water hole (12) is between two adjacent blades；Described oblique water hole
(12) it is provided with nozzle (6) in, between nozzle (6) and described oblique water hole (12), is provided with nozzle cage
(8), sealed nozzle circle (7) is installed between nozzle cage (8) and nozzle (6).
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 1, its feature
Being, the main cutting tooth (10) on described first wing (16) is cut with the master on the 4th wing (19)
Cut tooth (10) equidistantly to stagger on rotational trajectory, secondary cutting tooth (11) on the first wing (16) with
Main cutting tooth (10) on 4th wing (19) overlaps on rotational trajectory, second and third, five wings
(17), the main cutting tooth (10) on (18), (20) and secondary cutting tooth (11) respectively with the first wing
(16) main cutting tooth (10) and secondary cutting tooth (11) on overlap on rotational trajectory.
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 2, its feature
Being, described first, fourth wing (16), (19) are long wing, second and third, five wings (17),
(18), (20) are the short sword wing.
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 3, its feature
Being, the main cutting tooth (10) on described first wing (16) is five, and secondary cutting tooth (11) is
Two, the main cutting tooth (10) on described third and fourth wing (18), (19) is respectively four, secondary
Cutting tooth (11) is respectively two, the main cutting tooth (10) on described second, five wings (17), (20)
Being respectively three, secondary cutting tooth (11) is respectively two.
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 4, its feature
It is, described each wing is respectively equipped with electric welding layer (9)；Described main cutting tooth (10) and pair are cut
Cutting tooth (11) comprise steel-tooth post (21) respectively and close tooth (22), steel-tooth post (21) soldering is in electric welding
On layer (9), close tooth (22) soldering on steel-tooth post (21).
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 5, its feature
Being, described steel-tooth post (21) surface is provided with strengthening layer (23).
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 1, its feature
Being, described nozzle (6) is interior six side's hard alloy nozzles.
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 7, its feature
Being, the bizet of described drill bit lower body (2) is provided with multiple gauge teeth group.
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 8, its feature
Being, it is compound that described gauge teeth group comprises little gauge composite teeth (3), gauge carbide button (4) and big gauge
Tooth (5).
Five wing steel body type PDC drill bit of band cutting pair tooth the most according to claim 1, it is special
Levying and be, described drill bit upper body (1) is provided with the apopore (14) communicated with water injection hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374508.7A CN105840103A (en) | 2016-05-31 | 2016-05-31 | Five-blade steel body type polycrystalline diamond compact (PDC) drill bit with auxiliary cutting teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374508.7A CN105840103A (en) | 2016-05-31 | 2016-05-31 | Five-blade steel body type polycrystalline diamond compact (PDC) drill bit with auxiliary cutting teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105840103A true CN105840103A (en) | 2016-08-10 |
Family
ID=56595272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610374508.7A Pending CN105840103A (en) | 2016-05-31 | 2016-05-31 | Five-blade steel body type polycrystalline diamond compact (PDC) drill bit with auxiliary cutting teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105840103A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320991A (en) * | 2016-08-30 | 2017-01-11 | 宝鸡石油机械有限责任公司 | Combined gauge protection polycrystalline diamond compact bit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2281411Y (en) * | 1996-09-16 | 1998-05-13 | 孙泰林 | Drill bit with steel body and circular blades |
| US20090084608A1 (en) * | 2007-10-02 | 2009-04-02 | Mcclain Eric E | Cutting structures for casing component drillout and earth boring drill bits including same |
| CN201334874Y (en) * | 2009-01-20 | 2009-10-28 | 四川川石金刚石钻头有限公司 | Diamond bit with double rows of teeth |
| CN102678056A (en) * | 2012-06-04 | 2012-09-19 | 刘新军 | Cold-fixed PDC (polycrystalline diamond compact) bit |
| CN203129962U (en) * | 2013-04-01 | 2013-08-14 | 沧州格锐特钻头有限公司 | Bit-balling-prevention PDC (polycrystalline diamond compact) drill bit |
| CN203213963U (en) * | 2013-04-01 | 2013-09-25 | 沧州格锐特钻头有限公司 | Alloy tooth column polycrystalline diamond compact (PDC) drill bit |
| CN205778557U (en) * | 2016-05-31 | 2016-12-07 | 陕西金刚石油机械有限公司 | A kind of five wing steel body type PDC drill bit of band cutting pair tooth |
-
2016
- 2016-05-31 CN CN201610374508.7A patent/CN105840103A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2281411Y (en) * | 1996-09-16 | 1998-05-13 | 孙泰林 | Drill bit with steel body and circular blades |
| US20090084608A1 (en) * | 2007-10-02 | 2009-04-02 | Mcclain Eric E | Cutting structures for casing component drillout and earth boring drill bits including same |
| CN201334874Y (en) * | 2009-01-20 | 2009-10-28 | 四川川石金刚石钻头有限公司 | Diamond bit with double rows of teeth |
| CN102678056A (en) * | 2012-06-04 | 2012-09-19 | 刘新军 | Cold-fixed PDC (polycrystalline diamond compact) bit |
| CN203129962U (en) * | 2013-04-01 | 2013-08-14 | 沧州格锐特钻头有限公司 | Bit-balling-prevention PDC (polycrystalline diamond compact) drill bit |
| CN203213963U (en) * | 2013-04-01 | 2013-09-25 | 沧州格锐特钻头有限公司 | Alloy tooth column polycrystalline diamond compact (PDC) drill bit |
| CN205778557U (en) * | 2016-05-31 | 2016-12-07 | 陕西金刚石油机械有限公司 | A kind of five wing steel body type PDC drill bit of band cutting pair tooth |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320991A (en) * | 2016-08-30 | 2017-01-11 | 宝鸡石油机械有限责任公司 | Combined gauge protection polycrystalline diamond compact bit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |