CN206693925U - 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
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- CN206693925U CN206693925U CN201720497185.0U CN201720497185U CN206693925U CN 206693925 U CN206693925 U CN 206693925U CN 201720497185 U CN201720497185 U CN 201720497185U CN 206693925 U CN206693925 U CN 206693925U
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Abstract
The utility model 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 are 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 are arranged in the discharge groove between any twice adjacent cutting wing.Multiple bites that the utility model is set by protruding are wing into discharge groove, improve the expulsion efficiency that cutting is expected, and nozzle and hydrophthalmia provide abundant water lubrication, take away drill bit heat in time, play the protective effect to drill bit；Gauge body is connected with cutting wing, extends the cutting path of cutting wing, and the cutting mill set on gauge body can further scrape milling to drilling, avoid drilling rod from being worn.
Description
Technical field
It the utility model is related to oil drilling equipment technical field, and in particular to a kind of applicable Central Hunan upper palaeozoic page
Rock gas exploits 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 being welded on diamond compact by brazing mode on bit matrix.Carcass bores
Head tungsten-carbide powder sintering forms, with artificial PCD compacts brazing on tungsten carbide matrix.Steel body PDC drill bit,
It is with nickel, chromium, molybdenum alloy machining shaping.Drilled after Overheating Treatment on bit body, man-made polycrystalline diamond is compound
In piece press-in (tight fit) bit body.
Wherein carcass type drill bit had both had the hardness and wearability of diamond, had the intensity shock resistance of diamondite again
Performance, this kind of drill bit uses 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.
Utility model content
The purpose of this utility model is to provide a kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, and it is logical
Cross on gauge body the hydrophthalmia set and provide sufficient cooling, and optimization cutting wing structure for discharge groove, solve existing
The technical problem of carcass type PDC drill bit heat endurance difference in oil drilling in technology.
To achieve the above object, technical scheme is used by the utility model：
A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, including：
Drill body, the drill body are 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, 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 are projectedly arranged on drill body side face and had and the cutting wing identical
Quantity, multiple gauge bodies be connecteds with cutting wing described in multiple tracks respectively, are cutting scraping teeth homonymy with described on the gauge body
If dry cutting mill teeth is provided with direction；
Nozzle, the nozzle are arranged in the discharge groove between any twice adjacent cutting wing, the nozzle with it is described
Water cavity connects.
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 connects with the water cavity.
Further, the hydrophthalmia set on each gauge body is 3.
Compared with prior art, the utility model has advantages below：
The utility model is arranged between multiple cutting wings of drill body bizet by protrusion and forms discharge groove, is improved
The expulsion efficiency of material is cut, and sufficient water lubrication is provided in drill bit drilling process by nozzle and hydrophthalmia, is taken away in time
The heat of drill bit, 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 further scrapes so that borehole wall more light
It is sliding, offer advantage is stretched into drilling rod, avoids drilling rod from being worn in the borehole.
Further advantage, target and feature of the present utility model embody part by following explanation, and part will also pass through
Research of the present utility model and practice are understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is Fig. 1 the utility model top views.
Fig. 3 is Fig. 1 upward view.
Fig. 4 is Fig. 1 stereograms.
Embodiment
In order that technological means, creation characteristic, reached purpose that the utility model is realized more understand and are easy to acting on
Understand, the utility model is further elaborated with reference to the accompanying drawings and detailed description：
As preferred embodiment of the present utility model, 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 are 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 are projectedly arranged on drill body side face and had 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 formed are
Round platform；
Nozzle 8, the nozzle 8 are 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, 1 a diameter of 200mm of drill body, the cutting wing 3 sets 6, the cutting wing
3 annulars are distributed on drill body 1, and the height that the cutting wing 3 protrudes is 0.15 times, i.e. 30mm of bit diameter, described
The height that gauge body 6 protrudes is suitable with the cutting protrusion height of wing 3.
In oil drilling recovery process, eye contracting phenomenon occurs in the eyelet of drilling, i.e., drill-through eyelet aperture is shunk, this
Certain inhibition is played to stretching into for drilling rod so that the friction between drilling rod and aperture wall increases, and in this programme, passes through guarantor
Footpath body 6 and the cutting mill 7 being arranged on gauge body 6 extend bite to the drill-through further milling of hole wall, gauge body 6
The cutting path of the wing 3, ensure 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, avoids drilling rod from being 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 formed discharge groove 4, it is possible to increase cut the expulsion efficiency of material, and pass through nozzle 8 and hydrophthalmia 9
Sufficient water lubrication is provided in drill bit drilling process, takes away the heat of drill bit in time, plays the protective effect to drill bit, is improved
The heat endurance of drill bit.
PDC drill bit in the utility model first cleans out shaft bottom before drilling well, it is ensured that without metal sundries, starts
During drilling, first using small the pressure of the drill, slow-speed of revolution break-in, then with being adapted to the pressure of the drill and rotating speed to creep into, its preferable the pressure of the drill is 30-
60KN, rotating speed 217-117r/min, often 250-300m is crept into, it is necessary to carry out once short of midway.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, without departing from the objective and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (5)
- A kind of 1. applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit, it is characterised in that including：Drill body, the drill body are internally provided with water cavity；Multiple tracks cuts wing, and multiple tracks cutting wing is projectedly arranged on the bizet of the drill body, and 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 are projectedly arranged on drill body side face and had 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 dry cutting mill teeth is set up；Nozzle, the nozzle are arranged in the discharge groove between any twice adjacent cutting wing, the nozzle and the water cavity Connection.
- A kind of 2. 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 of the gauge body protrusion and the bite Wing protrusion height is suitable.
- A kind of 3. 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.
- A kind of 4. 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 connects with the water cavity.
- A kind of 5. 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 |
|---|---|---|---|
| CN201720497185.0U CN206693925U (en) | 2017-05-05 | 2017-05-05 | A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720497185.0U CN206693925U (en) | 2017-05-05 | 2017-05-05 | A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206693925U true CN206693925U (en) | 2017-12-01 |
Family
ID=60446664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720497185.0U Active CN206693925U (en) | 2017-05-05 | 2017-05-05 | A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206693925U (en) |
-
2017
- 2017-05-05 CN CN201720497185.0U patent/CN206693925U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 443001 Three Gorges private science and Technology Park, Hubei, Yichang Patentee after: Yichang Shenda Technology Co., Ltd Address before: 443001 Three Gorges private science and Technology Park, Hubei, Yichang Patentee before: YICHANG SHENDA PETROMACHINE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |