CN204627427U - Drill bit - Google Patents
Drill bit Download PDFInfo
- Publication number
- CN204627427U CN204627427U CN201520221683.3U CN201520221683U CN204627427U CN 204627427 U CN204627427 U CN 204627427U CN 201520221683 U CN201520221683 U CN 201520221683U CN 204627427 U CN204627427 U CN 204627427U
- Authority
- CN
- China
- Prior art keywords
- eddy flow
- drill bit
- snap ring
- nozzle
- jet orifice
- 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.)
- Expired - Fee Related
Links
- 230000002262 irrigation Effects 0.000 claims abstract description 14
- 238000003973 irrigation Methods 0.000 claims abstract description 14
- 238000005553 drilling Methods 0.000 abstract description 19
- 239000011435 rock Substances 0.000 abstract description 18
- 238000004140 cleaning Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of drill bit, the wing that it comprises body, is arranged on the nozzle of body bottom portion, is arranged on body exterior, there is in body the irrigation channel be communicated with nozzle, body offers the jet orifice be communicated with irrigation channel, between jet orifice and nozzle, be also provided with guiding eddy flow assembly.Guiding eddy flow assembly comprises and is installed in intrinsic guiding eddy flow bar.Guiding eddy flow assembly also comprises and is installed in intrinsic snap ring, and snap ring offers the through hole is communicated with irrigation channel, the eddy flow bar that leads is installed on snap ring.The utility model is by being arranged on intrinsic guiding eddy flow assembly, and make drilling mud form continuous print rotating flow in shaft bottom, drilling mud can form High Rotation Speed jet through the nozzle of drill bit, strengthens shaft bottom cleaning performance, and auxiliary rock; The oblique jet orifice of body upper end can produce injection stream obliquely, and the High Rotation Speed jet acting in conjunction with shaft bottom, realizes efficient rock-breaking, takes rock, thus improves bit speed.
Description
Technical field
The utility model relates to field of petroleum exploitation, has particularly related to a kind of drill bit.
Background technology
Along with going deep into of oil-gas resource exploration and development, the problems such as complex geologic conditions, rate of penetration are low, drilling cost increase become clear day by day.Especially along with the continuous increase of drilling depth, drilling fluid column pressure in pit shaft also constantly increases, more and more obvious to the chip hold down effect of landwaste, the transmission of the hydraulic energy in drilling process, conversion, distribution and utilization ratio are also along with the increase of well depth reduces further, and this directly results in the decline of bit speed.Preferred, the efficient auxiliary rock of the optimal design of drilling hydraulic parameters, hydraulic capacity of applicability drill bit and bottom-hole cleaning landwaste, become the effective means improving bit speed, shorten well construction period, reduce drilling cost.
In drilling process, drill bit contacts with rock, thus by effect fractured rocks such as cutting, punching presses.Drag bit structure is simple, easily manufactured, can obtain high rate of penetration and footage per bit in the soft formation such as mud stone and shale, but brill meet comparatively hard formation or soft or hard interlock hard interbedded layer time, drill bit wedging difficulty, drilling efficiency is low.Therefore, how by improving drag bit structure, how improving the transmission of hydraulic energy, changing and make full use of the stress state and Flow Field Distribution of improving bottom rock, be promote the problem that the efficiency of breaking rock of drill bit and bottom-hole cleaning landwaste effect must solve further.
Utility model content
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model there is provided a kind of drill bit, it can make drilling mud form continuous print High Rotation Speed jet in shaft bottom, realizes at the bottom of efficient flushing manhole and cutting carring, thus improves rate of penetration and efficiency of breaking rock.
Concrete technical scheme of the present utility model is:
A kind of drill bit, the wing that it comprises body, is arranged on the nozzle of described body bottom portion, is arranged on described body exterior, there is in described body the irrigation channel be communicated with described nozzle, described body offers the jet orifice be communicated with described irrigation channel, between described jet orifice and described nozzle, be also provided with the eddy flow assembly that leads.
Preferably, the axis of described jet orifice is from downward-sloping gradually outside to inside.
Preferably, described jet orifice is multiple, and multiple described jet orifice is arranged around the axis of described body.
Preferably, described guiding eddy flow assembly comprises and is installed in described intrinsic guiding eddy flow bar.
Preferably, described guiding eddy flow assembly also comprises and is installed in described intrinsic snap ring, and described snap ring offers the through hole be communicated with described irrigation channel, described guiding eddy flow bar is installed on described snap ring.
Preferably, described guiding eddy flow bar is located on described snap ring, and one end that described guiding eddy flow bar protrudes upward described snap ring is provided with nut.
Preferably, the cross section that described guiding eddy flow bar protrudes upward one end of described snap ring is rectangular, and described snap ring offers the groove stretching out snap ring one end with described guiding eddy flow bar and match.
Preferably, described guiding eddy flow bar and described irrigation channel are coaxially arranged.
Preferably, the top of described nut is curved.
Preferably, be formed with a step in described body, described snap ring is fastened on this step.
The utility model is by being arranged on intrinsic guiding eddy flow assembly, and make drilling mud form continuous print rotating flow in shaft bottom, drilling mud can form High Rotation Speed jet through the nozzle of drill bit, strengthens shaft bottom cleaning performance, and auxiliary rock; The oblique jet orifice of body upper end can produce injection stream obliquely, and the High Rotation Speed jet acting in conjunction with shaft bottom, realizes efficient rock-breaking, takes rock, thus improves bit speed.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 shows the structural representation of a specific embodiment of drill bit in the application.
Fig. 2 shows the sectional view of Fig. 1.
Fig. 3 show A-A in Fig. 2 to schematic cross-section.
Fig. 4 shows in Fig. 1 the structural representation of the eddy flow bar that leads.
The Reference numeral of above accompanying drawing: 1, body; 11, step; 2, wing; 31, standby cap; 32, snap ring; 33, lead eddy flow bar; 34, through hole; 4, nozzle; 5, jet orifice.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technician can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
The wing 2 that shown in seeing figures.1.and.2, this application discloses a kind of drill bit, it comprises body 1, be arranged on nozzle 4 bottom described body 1, be arranged on described body 1 outside.There is in described body 1 irrigation channel be communicated with described nozzle 4.Described body 1 offers the jet orifice 5 be communicated with described irrigation channel.The eddy flow assembly that leads also is provided with between described jet orifice 5 and described nozzle 4.
Fig. 1 shows a detailed description of the invention of drill bit in the application.In present embodiment, with reference to shown in Fig. 1, this drill bit comprises body 1 and wing 2.Body 1 is roughly cylindrical.Body 1 also offers jet orifice 5.Jet orifice 5 also can be multiple.Multiple jet orifice 5 can be arranged around the axisymmetrical of body 1, thus reaches uniform force.It is outside that wing 2 is arranged on body 1.Wing 2 has multiple cutting teeth.General wing 2 upwards extends arrangement from the bottom outer-edge of body 1.Wing 2 is generally multiple.Multiple wing 2 can be arranged around the axisymmetrical of body 1, thus reaches uniform force.In the present embodiment, jet orifice 5 goes up edge most higher than wing 2.
In the present embodiment, the axis of jet orifice 5 is from downward-sloping gradually outside to inside.Drilling mud, when through oblique jet orifice 5, by the throttling action of small-bore jet orifice 5, can produce continuous print high-speed jet obliquely from inside to outside.High-speed jet can produce a reverse impact effect to body 1, and the reverse impact masterpiece of generation is used on body 1 and can be converted into the pressure of the drill, thus improves the efficiency of breaking rock of drill bit.The ejection of high-speed jet can make the mud upwards high-speed motion in the annular space between the body 1 and well of drill bit, thus produce a negative pressuren zone in this region, a negative pressure " siphonage " can be played to shaft bottom mud and landwaste in this negative pressuren zone, thus improve drilling mud take rock efficiency.
Shown in composition graphs 2, the top of body 1 has inner conical screw thread, to be connected with other mechanisms.This drill bit also comprises nozzle 4.Nozzle 4 is arranged on the bottom of body 1, thus the High Rotation Speed mud entering body 1 inside can be sprayed from nozzle 4.
Shown in composition graphs 2, guiding eddy flow assembly is arranged in body 1.Guiding eddy flow assembly is between jet orifice 5 and nozzle 4.Drilling mud flows through guiding eddy flow bar 33 during in shaft bottom, by helical flow and the hydraulic energy of mud itself, continuous print high-speed rotary turn of tidal stream can be formed.Eddy flow drilling mud can form High Rotation Speed jet through the nozzle 4 of drill bit, strengthens shaft bottom cleaning performance, and auxiliary rock.
Shown in composition graphs 3, in the present embodiment, body 1 inside is provided with a step 11.Guiding eddy flow assembly comprises snap ring 32, guiding eddy flow bar 33 and standby cap 31.Snap ring 32 is fastened by this step 11 and is arranged on body 1.The inside of snap ring 32 can offer four groups of through holes 34 of evenly arranging around the axis direction of body 1.Through hole 34 can be fan-shaped, to play a guide functions.
Shown in composition graphs 4, spirally-guided in the shape of a spiral, thus is played to the liquid between through hole 34 and nozzle 4 in the lower end of guiding eddy flow bar 33.In the present embodiment, the upper end of guiding eddy flow bar 33 is passed snap ring 32 and stretches out snap ring 32.The cross section of the upper end of guiding eddy flow bar 33 is rectangular, and snap ring 32 offers the rectangular channel stretching out snap ring 32 one end with described guiding eddy flow bar 33 and match, so that the location of guiding eddy flow bar 33.The standby cap 31 matched with the eddy flow bar 33 that leads also is provided with in the upper end of guiding eddy flow bar 33.Guiding eddy flow bar 33 can be fixed on snap ring 32 by standby cap 31.The top of standby cap 31 is curved, to play the effect of water conservancy diversion and Anti-erosion.
In one preferred embodiment, in order to uniform force, guiding eddy flow bar 33 can coaxially be arranged with irrigation channel.Guiding eddy flow bar 33 can coaxially be arranged with body 1.
Compared with prior art, of the present utility modelly to have the following advantages:
1. of the present utility model rational in infrastructure compact, easy for installation;
2, can produce injection stream obliquely by the oblique jet orifice 5 of body 1 upper end, both can increase the pressure of the drill, improve the efficiency of breaking rock of drill bit, can play a negative pressure " siphonage " again to shaft bottom landwaste, that improves drilling mud takes rock efficiency.
3, by being arranged on the guiding eddy flow assembly in body 1 hydrophthalmia, making drilling mud form continuous print high-pressure rotary jet in shaft bottom, auxiliary rock, promoting efficiency of breaking rock, strengthening shaft bottom cleaning performance simultaneously, realize efficiently taking rock, improve the rate of penetration of drill bit.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (10)
1. a drill bit, it is characterized in that, the wing that it comprises body, is arranged on the nozzle of described body bottom portion, is arranged on described body exterior, there is in described body the irrigation channel be communicated with described nozzle, described body offers the jet orifice be communicated with described irrigation channel, between described jet orifice and described nozzle, be also provided with the eddy flow assembly that leads.
2. drill bit according to claim 1, is characterized in that, the axis of described jet orifice is from downward-sloping gradually outside to inside.
3. drill bit according to claim 1 and 2, is characterized in that, described jet orifice is multiple, and multiple described jet orifice is arranged around the axis of described body.
4. drill bit according to claim 1, is characterized in that, described guiding eddy flow assembly comprises and is installed in described intrinsic guiding eddy flow bar.
5. drill bit according to claim 4, is characterized in that, described guiding eddy flow assembly also comprises and is installed in described intrinsic snap ring, and described snap ring offers the through hole be communicated with described irrigation channel, described guiding eddy flow bar is installed on described snap ring.
6. drill bit according to claim 5, is characterized in that, described guiding eddy flow bar is located on described snap ring, and one end that described guiding eddy flow bar protrudes upward described snap ring is provided with nut.
7. drill bit according to claim 6, is characterized in that, the cross section that described guiding eddy flow bar protrudes upward one end of described snap ring is rectangular, and described snap ring offers the groove stretching out snap ring one end with described guiding eddy flow bar and match.
8. the drill bit according to claim 6 or 7, is characterized in that, described guiding eddy flow bar and described irrigation channel are coaxially arranged.
9. drill bit according to claim 6, is characterized in that, the top of described nut is curved.
10. drill bit according to claim 5, is characterized in that, is formed with a step in described body, and described snap ring is fastened on this step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221683.3U CN204627427U (en) | 2015-04-14 | 2015-04-14 | Drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221683.3U CN204627427U (en) | 2015-04-14 | 2015-04-14 | Drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204627427U true CN204627427U (en) | 2015-09-09 |
Family
ID=54046467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520221683.3U Expired - Fee Related CN204627427U (en) | 2015-04-14 | 2015-04-14 | Drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204627427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927160A (en) * | 2016-06-21 | 2016-09-07 | 宜昌神达石油机械有限公司 | Rotary jet flow PDC drill bit |
-
2015
- 2015-04-14 CN CN201520221683.3U patent/CN204627427U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927160A (en) * | 2016-06-21 | 2016-09-07 | 宜昌神达石油机械有限公司 | Rotary jet flow PDC drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |