CN107435522A - A kind of PDC drill bit of the anti-mud drum nozzle arrangements of band - Google Patents
A kind of PDC drill bit of the anti-mud drum nozzle arrangements of band Download PDFInfo
- Publication number
- CN107435522A CN107435522A CN201710859741.9A CN201710859741A CN107435522A CN 107435522 A CN107435522 A CN 107435522A CN 201710859741 A CN201710859741 A CN 201710859741A CN 107435522 A CN107435522 A CN 107435522A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- drill bit
- mud
- central
- pdc
- 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.)
- Withdrawn
Links
- 238000005476 soldering Methods 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 abstract description 15
- 238000005520 cutting process Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000005406 washing 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
- E21B10/60—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)
- 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 PDC drill bit of the anti-mud drum nozzle arrangements of band.Drill bit includes wing, PDC teeth and drill body, in chip area, drill body front end face outward flange is provided with nozzle, in chip area, drill body front end face be additionally provided with central nozzle close to central part；Central nozzle has 1 to 4；Central nozzle aperture is 5 15mm；Central nozzle is by soldering or the fixed nozzle being sintered in hydrophthalmia.The present invention sets fixed small nozzle in nearly central part, the structure can effectively wash away drill bit center portion, reduce the technical requirements that mud takes landwaste, mud cost is avoided to be significantly increased, avoid because bit balling frequently makes a trip the huge consuming of the drilling time brought and cost, the drillng operation cycle is reduced, saves drilling cost.
Description
Technical field
The invention belongs to drill bit design and manufacturing technology field, a kind of oil, geology rotary drilling drill bit are especially belonged to
Design and manufacturing technology, the PDC drill bit of more particularly to a kind of anti-mud drum nozzle arrangements of band.
Background technology
At present, the rotary drilling drill bit including PDC teeth as cutting tooth is widely used in fields such as oil, geology, it is this kind of
Drill bit abbreviation PDC drill bit.PDC drill bit has the advantages that rate of penetration is high, footage per bit long lifespan.It is more and more in drilling process
Ground uses PDC drill bit, and PDC drill bit mud drum apply at the scene in be a kind of common phenomenon.Bit balling makes drill bit PDC composite sheets
Formation rock can not effectively be attacked, cause drilling speed slack-off, only pulled out of hole in the case where processing is invalid and remove mud drum manually, caused
The number that makes a trip increases, and reduces drilling well timeliness utilization rate, the serious raising for restricting bit speed, has spun out drilling period, has kept away
Exempt from and prevent that PDC drill bit mud drum from being the important topic that PDC drill bit design faces.
The main reason for bit balling, includes：Geologic(al) factor, part mud stone meet the easy hydration swelling of water, cause mud drum.Mud
Performance factor, mud property is poor, cutting carring ability, is not easy to take away landwaste, in shaft bottom mud drum easily occurs for drill bit, by carrying
High quality of mud fluid needs to put into substantial amounts of production cost, and economic benefit will be greatly reduced.Nozzle design can not meet that chip removal will
Ask, runner chip removal does not hinder drilling cuttings freely and smoothly departs from shaft bottom, and solid phase easily absorption is on drill bit.
Existing PDC drill bit structure its drill bit center portion landwaste is more difficult is taken away by mud, it is difficult to solve the problems, such as bit balling.
The content of the invention
The present invention discloses a kind of PDC drill bit of the anti-mud drum nozzle arrangements of band according to the deficiencies in the prior art.The present invention will
Solve the problems, such as that landwaste discharge ability can be improved, prevent PDC drill bit from mud drum occurs, reduces because of bit balling mistake by being to provide one kind
Make a trip while reduces the excessive demand to mud property, reduces the anti-mud drum spray of PDC drill bit of drilling cost more bit change more
Mouth structure.
The present invention is achieved through the following technical solutions：
PDC drill bit with anti-mud drum nozzle arrangements, the PDC drill bit include wing, PDC teeth and drill body, its feature
It is：In chip area, drill body front end face outward flange is provided with nozzle, in chip area, drill body front end face
Central nozzle is additionally provided with close to central part.
The central nozzle has 1 to 4.
The central nozzle aperture is 5-15mm.
The central nozzle is by soldering or the fixed nozzle being sintered in hydrophthalmia.
Compared with prior art, the invention has the advantages that：
The present invention sets fixed small nozzle in the nearly central part of PDC drill bit, and the structure can effectively wash away drill bit center portion, reduce
Mud takes the technical requirements of landwaste, avoids mud cost from being significantly increased, and avoids because bit balling frequently makes a trip the brill brought
Well time and the huge consuming of cost.The drillng operation cycle is reduced, saves drilling cost.
Brief description of the drawings
Fig. 1 is bit central nozzle arrangements and functional schematic of the present invention；
Fig. 2 is drill bit arrangement schematic diagram of the present invention；
Fig. 3 is existing bit nozzle structure and functional schematic.
In figure, 1 is drill body, and 2 be central nozzle, and 3 be the borehole wall, and 4 be PDC teeth, and 5 be mud flow direction, and 6 be drill bit
Center, 7 be nozzle, and 8 be chip area, and 9 be wing.
Embodiment
The present invention is specifically described below by embodiment, the present embodiment is served only for carrying out further the present invention
Explanation, but it is not intended that limiting the scope of the invention, those skilled in the art is according in the invention described above
Hold some the nonessential modifications and adaptations made and fall within the scope of protection of the invention.
With reference to accompanying drawing.
PDC drill bit with anti-mud drum nozzle arrangements, PDC drill bit includes wing 9, PDC teeth 4 and drill body 1, in chip area
In 8, drill body front end face outward flange is provided with nozzle 7, in chip area 8, drill body front end face is close to central part
It is additionally provided with central nozzle 2.
Central nozzle 2 has 1 to 4.The aperture of central nozzle 2 is 5-15mm.
Central nozzle 2 is by soldering or the fixed nozzle being sintered in hydrophthalmia.
The present invention can improve landwaste discharge ability, prevent PDC drill bit from mud drum occurs, greatly reduce because bit balling must not
Do not make a trip time of more bit change, reduces the excessive demand to mud property, reduces drilling cost.
In drilling well, central nozzle 2 is set in bit central portion, can quickly exclude landwaste, prevents landwaste from being bored in shaft bottom
Head center portion deposition, effectively prevents PDC drill bit mud drum, improves the beneficial cutting force of drilling well, improves drill bit rate of penetration, saves drilling well
Cycle.During drill bit normal work, drill bit produces rotation, cutting tooth cutting rock stratum, and center portion sets central nozzle 2, and nozzle location is more
Close to drill bit center portion, the mud stream of injection is more easy to take away the landwaste of drill bit center portion, and the mud in shaft bottom is moved from turbulent flow and is changed into layer
Stream, mud is reduced in the residence time in shaft bottom, the action time of mud and drill bit is reduced, prevents bit balling.
The small central nozzle 2 of the present invention is arranged in the chip area 8 between wing 9, and is leaned on as far as possible through centre rotational axis, simultaneously
It should avoid washing away cutting tooth and damage excessive wing 9.
Small-bore central nozzle 2 of the present invention, cylinder type is generally sintered into by hard alloy YG11C, soldering or be sintered in water
In eye, the mud damage bit body of injection is prevented.
To steel body bit, processing mounting holes, soldering nozzle can be stayed on drill body.For matrix drill bits, Ke Yizhi
Direct soldering or the slow-witted nozzle of sintering are connected on drill bit on drill body.
Fig. 1 illustrates the mud flowing signal of central nozzle of the present invention, and Fig. 2 is drill bit arrangement schematic diagram of the present invention,
Fig. 3 illustrates the mud flow direction signal of existing drill bit.It can be seen that existing drill bit center portion has mud stream by Fig. 1 and Fig. 3
Dynamic dead band, easily occurs bit balling.After setting small-bore central nozzle 2, the mud that drill bit center portion also has injection takes away landwaste, from
And avoid bit balling.
Claims (4)
1. a kind of PDC drill bit of the anti-mud drum nozzle arrangements of band, the PDC drill bit includes wing, PDC teeth and drill body, adjacent
It is chip area between wing, it is characterised in that：In chip area, drill body front end face outward flange is provided with nozzle,
In chip area, drill body front end face be additionally provided with central nozzle close to central part.
2. the PDC drill bit of the anti-mud drum nozzle arrangements of band according to claim 1, it is characterised in that：The central nozzle has 1
To 4.
3. the PDC drill bit of the anti-mud drum nozzle arrangements of band according to claim 1, it is characterised in that：The central nozzle hole
Footpath is 5-15mm.
4. the PDC drill bit of the anti-mud drum nozzle arrangements of band according to claim 1, it is characterised in that：The central nozzle is
Pass through soldering or the fixed nozzle being sintered in hydrophthalmia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859741.9A CN107435522A (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit of the anti-mud drum nozzle arrangements of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859741.9A CN107435522A (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit of the anti-mud drum nozzle arrangements of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107435522A true CN107435522A (en) | 2017-12-05 |
Family
ID=60461652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710859741.9A Withdrawn CN107435522A (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit of the anti-mud drum nozzle arrangements of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107435522A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092684A1 (en) * | 2000-06-07 | 2002-07-18 | Smith International, Inc. | Hydro-lifter rock bit with PDC inserts |
| CN102409980A (en) * | 2011-12-22 | 2012-04-11 | 河南神龙石油钻具有限公司 | Blade type PDC (Polycrystalline Diamond Compact) drill bit |
| CN204024486U (en) * | 2014-07-07 | 2014-12-17 | 成都保瑞特钻头有限公司 | A kind of anti-mud drum PDC drill bit |
| CN204920809U (en) * | 2015-08-24 | 2015-12-30 | 四川川石金刚石钻头有限公司 | Mud drum drill bit is prevented to little hydrophthalmia |
-
2017
- 2017-09-21 CN CN201710859741.9A patent/CN107435522A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092684A1 (en) * | 2000-06-07 | 2002-07-18 | Smith International, Inc. | Hydro-lifter rock bit with PDC inserts |
| CN102409980A (en) * | 2011-12-22 | 2012-04-11 | 河南神龙石油钻具有限公司 | Blade type PDC (Polycrystalline Diamond Compact) drill bit |
| CN204024486U (en) * | 2014-07-07 | 2014-12-17 | 成都保瑞特钻头有限公司 | A kind of anti-mud drum PDC drill bit |
| CN204920809U (en) * | 2015-08-24 | 2015-12-30 | 四川川石金刚石钻头有限公司 | Mud drum drill bit is prevented to little hydrophthalmia |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171205 |
|
| WW01 | Invention patent application withdrawn after publication |