CN106907113A - A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit - Google Patents
A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit Download PDFInfo
- Publication number
- CN106907113A CN106907113A CN201710313215.2A CN201710313215A CN106907113A CN 106907113 A CN106907113 A CN 106907113A CN 201710313215 A CN201710313215 A CN 201710313215A CN 106907113 A CN106907113 A CN 106907113A
- Authority
- CN
- China
- Prior art keywords
- cutting
- wing
- drill bit
- gauge body
- gauge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005520 cutting process Methods 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000007790 scraping Methods 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 abstract description 23
- 238000005461 lubrication Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000003801 milling Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 3
- 229910003460 diamond Inorganic materials 0.000 description 6
- 239000010432 diamond Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 present invention provides a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, including drill body；Multiple tracks cuts wing, and multiple tracks cutting wing is projectedly located at drill body bizet, discharge groove is formed between the adjacent cutting wing of any twice, if all cutting wings are provided with dry cutting scraping teeth in the same side；Gauge body, gauge body is projectedly located on drill body side face, and multiple gauge bodies are connected with multiple tracks cutting wing respectively, if being provided with dry cutting mill teeth in the direction with cutting scraping teeth homonymy on gauge body；Nozzle, nozzle is arranged in the discharge groove between any twice adjacent cutting wing.The present invention is wing into discharge groove by protruding multiple bites of setting, improves the expulsion efficiency of cutting material, and nozzle and hydrophthalmia provide abundant water lubrication, and drill bit heat is taken away in time, play the protective effect to drill bit；Gauge body is connected with cutting wing, and the cutting path of extension cutting wing, the cutting mill set on gauge body can further scrape milling to drilling, it is to avoid drilling rod is worn.
Description
Technical field
The present invention relates to oil drilling equipment technical field, and in particular to a kind of applicable Central Hunan upper palaeozoic shale gas
Exploitation PDC drill bit.
Background technology
PDC drill bit is the abbreviation of polycrystalline diamond compact bit, is a kind of conventional drilling tool of geological drilling industry.
PDC drill bit is divided into matrix-type PDC drill bit and the major class of steel body type PDC drill bit two, wherein matrix-type diamond compact
(PDC) drill bit is a kind of chipping type bit diamond compact being welded on by brazing mode on bit matrix.Carcass is bored
Head tungsten-carbide powder sintering is formed, with artificial PCD compacts brazing on tungsten carbide matrix.Steel body PDC drill bit,
It is to be machined shaping with nickel, chromium, molybdenum alloy.Drilled on bit body after Overheating Treatment, man-made polycrystalline diamond is combined
In piece press-in (tight fit) bit body.
Wherein carcass type drill bit had both had the hardness and wearability of diamond, and the intensity shock resistance with diamondite
Performance, this kind of drill bit is used extensively in field drilling, but its heat endurance is poor, is especially taken the photograph when temperature of diamond bit reaches 350
When more than family name's degree, bit wear aggravation, the drilling efficiency and service life of drill bit are decreased obviously.
The content of the invention
It is an object of the invention to provide a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, its by
The hydrophthalmia set on gauge body provides sufficiently cooling, and optimization cutting wing structure for discharge groove, solves prior art
The technical problem of middle carcass type PDC drill bit heat endurance difference in oil drilling.
To achieve the above object, the technical solution adopted in the present invention is：
A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, including：
Drill body, the drill body is internally provided with water cavity；
Multiple tracks cuts wing, multiple tracks cutting wing is projectedly arranged on the bizet of the drill body, and protrusion is appointed
Discharge groove is formed between the adjacent cutting wing of meaning twice, if all cutting wings are provided with dry cutting scraping teeth in the same side；
Gauge body, the gauge body is projectedly arranged on drill body side face and has and the cutting wing identical
Quantity, multiple gauge bodies respectively with wing is cut described in multiple tracks be connected, cutting scraping teeth homonymy with described on the gauge body
If being provided with dry cutting mill teeth on direction；
Nozzle, the nozzle is arranged in the discharge groove between any twice adjacent cutting wing, the nozzle with it is described
Water cavity is connected.
Further, the height of the cutting wing protrusion is 0.05-0.2 times of bit diameter, the gauge body protrusion
Height with it is described cutting wing protrusion height it is suitable.
Further, the cutting wing sets 5-8, and the cutting wing annular is distributed on drill body.
Further, hydrophthalmia is provided with the gauge body, the hydrophthalmia is connected with the water cavity.
Further, the hydrophthalmia for being set on each gauge body is 3.
Compared with prior art, the present invention has advantages below：
The present invention forms discharge groove between multiple cutting wings of drill body bizet are arranged on by protrusion, improves cutting
The expulsion efficiency of material, and sufficient water lubrication is provided in drill bit drilling process by nozzle and hydrophthalmia, drill bit is taken away in time
Heat, play the protective effect to drill bit.
Gauge body is connected with cutting wing, plays a part of assisted machining wing, extends the cutting path of cutting wing,
And the drilling that the cutting mill set on gauge body can be drilled out to drill bit is further scraped so that borehole wall more light
It is sliding, offer advantage is stretched into drilling rod, it is to avoid drilling rod is worn in the borehole.
Further advantage of the invention, target and feature embody part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is front view of the invention.
Fig. 2 is Fig. 1 top views of the present invention.
Fig. 3 is the upward view of Fig. 1.
Fig. 4 is Fig. 1 stereograms.
Specific embodiment
In order that technological means, creation characteristic, reached purpose that the present invention is realized more understand and are apparent to effect,
The present invention is further elaborated with reference to the accompanying drawings and detailed description：
As the preferred embodiments of the present invention, accompanying drawing 1 and Fig. 2 are referred to：
A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, including：
Drill body 1, the drill body 1 is internally provided with water cavity 2；
Multiple tracks cuts wing 3, and the multiple tracks cutting wing 3 is projectedly arranged on the bizet of the drill body 1, protrusion
Discharge groove 4 is formed between the adjacent cutting wing 3 of any twice, if all cutting wings 3 are provided with dry cutting in the same side
Scraping teeth 5；
Gauge body 6, the gauge body 6 is projectedly arranged on drill body side face and has and the cutting phase of wing 3
Same quantity, multiple gauge bodies 6 are connected with cutting wing 3 described in multiple tracks, same with the cutting scraping teeth 5 on the gauge body 6
If being provided with dry cutting mill teeth 7 on the direction of side, hydrophthalmia 9 is provided with the gauge body 6, the hydrophthalmia 9 connects with the water cavity 2
Logical, the number of the hydrophthalmia 9 set on each gauge body 6 is 3, and the circle configurations that the outside wall surface of the gauge body 6 is constituted are
Round platform；
Nozzle 8, the nozzle 8 is arranged in the discharge groove 4 between the adjacent cutting wing 3 of any twice, the nozzle 8
Connected with the water cavity 2.
In such scheme, a diameter of 200mm of the drill body 1, the cutting wing 3 sets 6, the cutting wing
3 annulars are distributed on drill body 1, and the height of cutting wing 3 protrusion is 0.15 times of bit diameter, i.e. 30mm is described
The height of the protrusion of gauge body 6 is suitable with the cutting protrusion height of wing 3.
In oil drilling recovery process, the eyelet of drilling occurs eye contracting phenomenon, i.e., drill-through eyelet aperture is shunk, this
Certain inhibition is played to stretching into for drilling rod so that the friction increase between drilling rod and aperture wall, in this programme, by protecting
, to the drill-through further milling of hole wall, gauge body 6 extends bite for footpath body 6 and the cutting mill 7 that is arranged on gauge body 6
The cutting path of the wing 3, it is ensured that drill-through eyelet go out to lose face contracting after obtain milling reaming so that borehole wall is more smooth, right
Drilling rod stretches into offer advantage, it is to avoid drilling rod is worn in the borehole, so as to ensure that drilling rod stretches into brill with drill bit
The fluency in hole, meanwhile, the water in water cavity 2 can be incorporated into gauge body 6 and discharge groove 4 by the hydrophthalmia 9 being arranged on gauge body 6
It is interior that this segment space is lubricated, promote the soil after cutting timely to discharge；Protrusion is arranged on the bizet of drill body 1
Multiple cutting wings 3 between form discharge groove 4, it is possible to increase the expulsion efficiency of cutting material, and by nozzle 8 and hydrophthalmia 9
Sufficient water lubrication is provided in drill bit drilling process, the heat of drill bit is taken away in time, play the protective effect to drill bit, improve
The heat endurance of drill bit.
PDC drill bit in the present invention first cleans out shaft bottom before drilling well, it is ensured that without metal sundries, starts drilling
When, first using small the pressure of the drill, slow-speed of revolution break-in, then with the pressure of the drill and rotating speed drilling is adapted to, its preferred the pressure of the drill is 30-60KN, is turned
Fast 217-117r/min, often creeps into 250-300m, it is necessary to carry out once short of midway.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of technical solution of the present invention, it all should cover at this
In the middle of the right of invention.
Claims (5)
1. a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, it is characterised in that including：
Drill body, the drill body is internally provided with water cavity；
Multiple tracks cuts wing, and the multiple tracks cutting wing is projectedly arranged on the bizet of the drill body, any the two of protrusion
Discharge groove is formed between the adjacent cutting wing in road, if all cutting wings are provided with dry cutting scraping teeth in the same side；
Gauge body, the gauge body is projectedly arranged on drill body side face and has and the cutting wing identical number
Amount, multiple gauge bodies are connected with cutting wing described in multiple tracks respectively, in the side with the cutting scraping teeth homonymy on the gauge body
If having set up dry cutting mill teeth；
Nozzle, the nozzle is arranged in the discharge groove between any twice adjacent cutting wing, the nozzle and the water cavity
Connection.
2. a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit as claimed in claim 1, it is characterised in that
The height of the cutting wing protrusion is 0.05-0.2 times of bit diameter, the height and the bite of the gauge body protrusion
Wing protrusion height is suitable.
3. a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit as claimed in claim 1, it is characterised in that
The cutting wing sets 5-8, and the cutting wing annular is distributed on drill body.
4. a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit as claimed in claim 1, it is characterised in that
Hydrophthalmia is provided with the gauge body, the hydrophthalmia is connected with the water cavity.
5. a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit as claimed in claim 4, it is characterised in that
The hydrophthalmia set on each gauge body is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313215.2A CN106907113B (en) | 2017-05-05 | 2017-05-05 | PDC drill bit suitable for exploiting shale gas in ancient kingdom on depression in Hunan province |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313215.2A CN106907113B (en) | 2017-05-05 | 2017-05-05 | PDC drill bit suitable for exploiting shale gas in ancient kingdom on depression in Hunan province |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106907113A true CN106907113A (en) | 2017-06-30 |
| CN106907113B CN106907113B (en) | 2024-03-26 |
Family
ID=59210928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710313215.2A Active CN106907113B (en) | 2017-05-05 | 2017-05-05 | PDC drill bit suitable for exploiting shale gas in ancient kingdom on depression in Hunan province |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106907113B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021858A (en) * | 1996-06-05 | 2000-02-08 | Smith International, Inc. | Drill bit having trapezium-shaped blades |
| CN101382045A (en) * | 2008-07-30 | 2009-03-11 | 江汉石油钻头股份有限公司 | Three-cone bit for horizontal well and hard formation well |
| 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 |
| CN204627420U (en) * | 2015-03-31 | 2015-09-09 | 中国石油大学(华东) | Gauge PDC drill bit is strengthened for plasticity mud shale three wing |
| CN105822229A (en) * | 2016-05-16 | 2016-08-03 | 廊坊市鼎鑫联拓工贸有限公司 | PDC bit with torsion impact function |
| CN205477380U (en) * | 2016-02-01 | 2016-08-17 | 四川川庆石油钻采科技有限公司 | PDC drill bit is hindered to low rubbing |
| CN105888559A (en) * | 2016-05-09 | 2016-08-24 | 中国石油天然气股份有限公司 | PDC (polycrystalline diamond compact) drill bit applicable to mud rock |
| CN205532305U (en) * | 2016-03-29 | 2016-08-31 | 西南石油大学 | Rotatable PDC drill bit of cutting teeth |
-
2017
- 2017-05-05 CN CN201710313215.2A patent/CN106907113B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6021858A (en) * | 1996-06-05 | 2000-02-08 | Smith International, Inc. | Drill bit having trapezium-shaped blades |
| CN101382045A (en) * | 2008-07-30 | 2009-03-11 | 江汉石油钻头股份有限公司 | Three-cone bit for horizontal well and hard formation well |
| 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 |
| CN204627420U (en) * | 2015-03-31 | 2015-09-09 | 中国石油大学(华东) | Gauge PDC drill bit is strengthened for plasticity mud shale three wing |
| CN205477380U (en) * | 2016-02-01 | 2016-08-17 | 四川川庆石油钻采科技有限公司 | PDC drill bit is hindered to low rubbing |
| CN205532305U (en) * | 2016-03-29 | 2016-08-31 | 西南石油大学 | Rotatable PDC drill bit of cutting teeth |
| CN105888559A (en) * | 2016-05-09 | 2016-08-24 | 中国石油天然气股份有限公司 | PDC (polycrystalline diamond compact) drill bit applicable to mud rock |
| CN105822229A (en) * | 2016-05-16 | 2016-08-03 | 廊坊市鼎鑫联拓工贸有限公司 | PDC bit with torsion impact function |
Non-Patent Citations (1)
| Title |
|---|
| 刘先富等: "大尺寸井眼扶正器断裂问题分析与建议", 《石油机械》, vol. 45, no. 2, 28 February 2017 (2017-02-28), pages 32 - 34 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106907113B (en) | 2024-03-26 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 443001 Three Gorges private science and Technology Park, Hubei, Yichang Applicant after: Yichang Shenda Technology Co.,Ltd. Address before: 443001 Three Gorges private science and Technology Park, Hubei, Yichang Applicant before: YICHANG SHENDA PETROMACHINE Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |