CN203547543U - Mini-sized coring bit with sharp and round tooth - Google Patents
Mini-sized coring bit with sharp and round tooth Download PDFInfo
- Publication number
- CN203547543U CN203547543U CN201320724505.3U CN201320724505U CN203547543U CN 203547543 U CN203547543 U CN 203547543U CN 201320724505 U CN201320724505 U CN 201320724505U CN 203547543 U CN203547543 U CN 203547543U
- Authority
- CN
- China
- Prior art keywords
- tooth
- sharp
- knuckle
- sharp knuckle
- micro
- 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 - Lifetime
Links
- 239000011435 rock Substances 0.000 claims abstract description 25
- 230000036346 tooth eruption Effects 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims description 40
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 11
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a mini-sized coring bit with a sharp and round tooth. The mini-sized coring bit comprises a connector, a base body, a plurality of knife wings and cutting teeth. The forward direction of a drill bit at utilization time is used as the front direction. The connector is connected with the back end of the base body. The knife wings are distributed on the circumference of the front portion of the base body. The cutting teeth are arranged on surfaces of middle front sections of the knife wings. A coring space used for obtaining mini-sized rock cores is formed in front of the center of the end face of the front end of the base body. The middle front sections of the knife wings are distributed on the periphery of the coring space. The sharp and round tooth used for enabling the mini-sized rock cores to fracture is arranged in the position, where the coring space is located, in the end face of the front end of the base body. The front portion of the sharp and round tooth is an outward-protruding circular-arc-shaped sharp part. The sharp part of the sharp and round tooth points right ahead or obliquely ahead. According to the mini-sized coring bit, the sharp and round tooth is arranged on the back of the coring space, so that mini-sized rock cores can be fractured quickly and are discharged through boreholes along with drilling fluid. The mini-sized coring bit has great guiding significance on subsequent well drilling work. The mini-sized coring bit is of a sharp and round tooth structure so as to be capable of reducing the length of the coring space. Moreover, the structure of the drill bit can be maintained stable and firm.
Description
Technical field
The utility model relates to a kind of micro-coring bit that is mainly used in oil and gas well drilling, relates in particular to a kind of micro-coring bit of sharp knuckle-tooth that makes fast rock core fracture function that has.
Background technology
In recent years, each oil field is more and more higher to the requirement of the construction cycle of petroleum gas and safety, match with it various tool in performance, be greatly improved, also more and more higher to the requirement of the rate of penetration of drill bit and drilling depth in drilling process.Such as, geological logging need to be identified geological section under landwaste and completed well, but when traditional PDC drill bit creeps in hard formation, landwaste is tiny, and to landwaste, identification brings difficulty.Current, in market, there is a kind of micro-coring bit, the design feature of this drill bit is that drill bit heart portion does not have cutting teeth to participate in cutting, water channel between two wings of drill bit is darker compared with other water channel, at water channel sidewall, one rock core fault structure is set, in drilling process, can form rock core, fracture automatically after rock core contacts with fault structure, the rock core of fracture is discharged shaft bottom with drilling fluid.This structure has improved the rate of penetration of drill bit, the rock core carrying out by drilling fluid can carry out formation lithology detection, but structure is comparatively complicated, and cored structure and dark chip area need to break,, in the situation that moment of torsion is larger, can there is the risk of the breaking wing in the wing that water channel is darker.Therefore the drilling efficiency and the safety that improve drill bit are very crucial, indispensable.
Utility model content
The purpose of this utility model provides a kind of micro-coring bit of sharp knuckle-tooth that makes fast rock core fracture function and stabilized structure that has with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The micro-coring bit of sharp knuckle-tooth described in the utility model comprises joint, matrix, wing and cutting teeth, direction of advance when the described drill bit of take is used is the place ahead, described joint is connected with the rear end of described matrix, described wing is a plurality of, be distributed on the circumference of described matrix front portion, described cutting teeth is located at the surface of leading portion in described wing, the place ahead, center of described matrix front end end face is provided with gets core space for what obtain small rock core, described in the middle leading portion of described a plurality of wings is distributed in, gets core space around; The position of getting region, core space described in being positioned in described matrix front end end face is provided with for making the sharp knuckle-tooth of described small rock core fracture, and the front portion of described sharp knuckle-tooth is the tip of evagination circular arc, directed straight ahead or oblique the place ahead, the tip of described sharp knuckle-tooth.
During application, the tip of sharp knuckle-tooth can make to get the small rock core fracture in core space fast, and length, installation site that can be by regulating sharp knuckle-tooth with and the sensing of the tip length, the integrity degree that regulate rock core to be shaped, application is convenient.
Particularly, described in get core space diameter be M, 3mm≤M≤25mm.Get core length unsuitable long, avoid falling into shaft bottom Repeated Cutting.
Preferably, described sharp knuckle-tooth is PDC composite teeth, thermally-stabilised glomerocryst tooth or hard-metal insert.
According to practical application request, described sharp knuckle-tooth is positioned at the center position of described matrix front end end face, and the tip sensing of described sharp knuckle-tooth and the angle between dead ahead are α, 90 ° of 0 °≤α <; As preferably, the span of described angle α is 45 ° of 0 °≤α <.
As required, the rear portion of described sharp knuckle-tooth and the angle between dead ahead are β, 90 ° of 0 °≤β <; Described sharp knuckle-tooth has side corner γ, 20 ° of-20 °≤γ <.
Described sharp knuckle-tooth also can be positioned at the position in outside, described matrix front end end face center, and described sharp knuckle-tooth is got core space described in being positioned at the tip of described sharp knuckle-tooth away from the distance of described matrix front end end face center position and is limited.
Particularly, the micro-coring bit of described sharp knuckle-tooth is for creep into PDC matrix drill bits, creep into PDC steel body bit or creep into impregnated bit comprehensively comprehensively comprehensively, and bit diameter is 4 " to 26 " between.
For the ease of excretion rock core, on described matrix, between adjacent described wing, position is provided with hydrophthalmia, the diameter of the described hydrophthalmia of close described sharp knuckle-tooth is greater than the diameter of described small rock core, and the nozzle of the described hydrophthalmia of close described sharp knuckle-tooth is fixed or type variable.
The beneficial effects of the utility model are:
The utility model arranges sharp knuckle-tooth by the rear getting core space, can make small rock core rupture fast, and along with drilling fluid is discharged by well, follow-up drilling well work is had to great importance; This drill bit adopts sharp knuckle-tooth structure can reduce to get the length in core space, keeps drill bit structure firm.
Accompanying drawing explanation
Fig. 1 is the perspective view of the micro-coring bit of sharp knuckle-tooth described in the utility model;
Fig. 2 is the axial sectional view of the micro-coring bit of sharp knuckle-tooth described in the utility model, in figure, only shows half, and second half is symmetrical structure, and the small rock core 8 that just can produce while also showing application in figure, so that understand;
Fig. 3 is one of the mounting structure schematic diagram of the sharp knuckle-tooth of the micro-coring bit of sharp knuckle-tooth described in the utility model;
Fig. 4 be the micro-coring bit of sharp knuckle-tooth described in the utility model sharp knuckle-tooth mounting structure schematic diagram two;
Fig. 5 be the micro-coring bit of sharp knuckle-tooth described in the utility model sharp knuckle-tooth mounting structure schematic diagram three;
Fig. 6 be the micro-coring bit of sharp knuckle-tooth described in the utility model sharp knuckle-tooth mounting structure schematic diagram four;
Fig. 7 be the micro-coring bit of sharp knuckle-tooth described in the utility model sharp knuckle-tooth mounting structure schematic diagram five;
Fig. 8 be the micro-coring bit of sharp knuckle-tooth described in the utility model sharp knuckle-tooth mounting structure schematic diagram six;
Fig. 9 be the micro-coring bit of sharp knuckle-tooth described in the utility model sharp knuckle-tooth mounting structure schematic diagram seven;
Figure 10 is one of contour structures schematic diagram of sharp knuckle-tooth described in the utility model;
Figure 11 be sharp knuckle-tooth described in the utility model contour structures schematic diagram two;
Figure 12 be sharp knuckle-tooth described in the utility model contour structures schematic diagram three;
Figure 13 be sharp knuckle-tooth described in the utility model contour structures schematic diagram four;
Figure 14 be sharp knuckle-tooth described in the utility model contour structures schematic diagram five;
Figure 15 be sharp knuckle-tooth described in the utility model contour structures schematic diagram six;
Figure 16 be sharp knuckle-tooth described in the utility model contour structures schematic diagram seven;
Figure 17 be sharp knuckle-tooth described in the utility model contour structures schematic diagram eight.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As depicted in figs. 1 and 2, the micro-coring bit of sharp knuckle-tooth described in the utility model comprises joint 1, matrix 3, wing 5 and cutting teeth 6, direction of advance when the described drill bit of take is used is as the place ahead (top in Fig. 2), joint 1 is connected (this example be formed in one structure) with the rear end of matrix 3, wing 5 is a plurality of, be distributed on the circumference of matrix 3 front portions, cutting teeth 6 is located at the surface of leading portion in wing 5, it (is the space at small rock core 8 places of Fig. 2 that the place ahead, center of matrix 3 front end end faces is provided with for obtaining the core space of getting of small rock core, separate marking not in figure), the middle leading portion of a plurality of wings 5 is distributed in gets core space around, in the front end end face of matrix 3, be positioned at the position of getting region, core space and be provided with for making the sharp knuckle-tooth 9 of small rock core 8 fractures, the front portion of sharp knuckle-tooth 9 is the tip of evagination circular arc, directed straight ahead or oblique the place ahead, the tip of sharp knuckle-tooth 9.In Fig. 1 and Fig. 2, also show breaker slot 2, the gauge 4 of wing 5 back segments and the hydrophthalmia 7 on the matrix 3 between adjacent wing 5, these are conventional structure; Wherein the diameter of the hydrophthalmia 7 of close sharp knuckle-tooth 9 is greater than the diameter of small rock core 8, and the nozzle of the hydrophthalmia 7 of close sharp knuckle-tooth 9 is fixed or type variable.
In said structure, the diameter of getting core space is unmarked in M(figure), 3mm≤M≤25mm; Point knuckle-tooth 9 is PDC composite teeth, thermally-stabilised glomerocryst tooth or hard-metal insert; The micro-coring bit of described sharp knuckle-tooth is for creep into PDC matrix drill bits, creep into PDC steel body bit or creep into impregnated bit comprehensively comprehensively comprehensively, and bit diameter is 4 " to 26 " between.
The mounting structure of point knuckle-tooth 9 has multiple variation, as follows:
As shown in Figure 3, sharp knuckle-tooth 9 is positioned at the matrix 3 that matrix 3(is shown in Fig. 2) center position of front end end face, the tip of sharp knuckle-tooth 9 points to and dead ahead (in Fig. 3 directly over) between angle be α, 90 ° of 0 °≤α <; The preferred span of angle α is 45 ° of 0 °≤α <, is approximately 30 ° in Fig. 3.
As shown in Figure 4, sharp knuckle-tooth 9 is positioned at the matrix 3 that matrix 3(is shown in Fig. 2) center position of front end end face, the tip of sharp knuckle-tooth 9 points to and dead ahead (in Fig. 4 directly over) between angle be α, 90 ° of 0 °≤α <; The preferred span of angle α is 45 ° of 0 °≤α <, is approximately 30 ° in Fig. 3.This example is compared with Fig. 3, and angle α lays respectively at the both sides of dead ahead axis, phase dihedral each other, and its essence is the same.
As shown in Figure 5, sharp knuckle-tooth 9 is positioned at the matrix 3 that matrix 3(is shown in Fig. 2) position in front end end face center outside, sharp knuckle-tooth 9 is positioned at and gets core space and be limited with the tip of sharp knuckle-tooth 9 away from the distance of the front end end face center position of matrix 3.Sharp knuckle-tooth 9 in Fig. 5 comparatively approaches the center position of matrix 3 front end end faces, its tip points to and dead ahead (in Fig. 5 directly over) between angle be approximately 15 °.
As shown in Figure 6, point knuckle-tooth 9 is positioned at the matrix 3 that matrix 3(is shown in Fig. 2) position in front end end face center outside, point knuckle-tooth 9 is further from the center position of matrix 3 front end end faces, its tip points to and dead ahead (in Fig. 6 directly over) between angle be approximately 45 °.
Fig. 7 is identical with Fig. 5 essence, is the opposite side that sharp knuckle-tooth 9 is positioned at the center position of matrix 3 front end end faces.
Fig. 8 is identical with Fig. 6 essence, is the opposite side that sharp knuckle-tooth 9 is positioned at the center position of matrix 3 front end end faces.
As shown in Figure 9, the rear portion of sharp knuckle-tooth 9 and the angle between dead ahead are β, 90 ° of 0 °≤β <; Point knuckle-tooth 9 also has side corner γ, 20 ° of-20 °≤γ <.
Point knuckle-tooth 9 contour structures have multiple variation, below introductory section preferred embodiment:
As shown in figure 10, the integral body of sharp knuckle-tooth 9 is comparatively round and smooth, symmetrical.
As shown in figure 11, the integrated symmetric of sharp knuckle-tooth 9, it is anterior that Figure 10 is more sharp-pointed relatively.
As shown in figure 12, the integrated symmetric of sharp knuckle-tooth 9, it is anterior that Figure 11 is more sharp-pointed relatively.
As shown in figure 13, the integrated symmetric of sharp knuckle-tooth 9, edge, middle part is cylindrical.
As shown in figure 14, the integral body of sharp knuckle-tooth 9 is asymmetric, and a side is the relatively round and smooth conical surface, and opposite side is the relatively sharp-pointed conical surface.
As shown in figure 15, sharp knuckle-tooth 9 is symmetrical with Figure 14, and essence is identical.
As shown in figure 16, the integral body of sharp knuckle-tooth 9 is asymmetric, and the relatively round and smooth and middle part of a side is cylinder, and opposite side is the relatively sharp-pointed conical surface.
As shown in figure 17, sharp knuckle-tooth 9 is symmetrical with Figure 16, and essence is identical.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; so long as the technical scheme that can realize on the basis of above-described embodiment without creative work all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (10)
1. the micro-coring bit of sharp knuckle-tooth, comprise joint, matrix, wing and cutting teeth, direction of advance when the described drill bit of take is used is the place ahead, described joint is connected with the rear end of described matrix, described wing is a plurality of, is distributed on the circumference of described matrix front portion, and described cutting teeth is located at the surface of leading portion in described wing, the place ahead, center of described matrix front end end face is provided with gets core space for what obtain small rock core, described in the middle leading portion of described a plurality of wings is distributed in, gets core space around; It is characterized in that: the position of getting region, core space described in being positioned in described matrix front end end face is provided with for making the sharp knuckle-tooth of described small rock core fracture, the front portion of described sharp knuckle-tooth is the tip of evagination circular arc, directed straight ahead or oblique the place ahead, the tip of described sharp knuckle-tooth.
2. the micro-coring bit of sharp knuckle-tooth according to claim 1, is characterized in that: described in get core space diameter be M, 3mm≤M≤25mm.
3. the micro-coring bit of sharp knuckle-tooth according to claim 1, is characterized in that: described sharp knuckle-tooth is PDC composite teeth, thermally-stabilised glomerocryst tooth or hard-metal insert.
4. according to the micro-coring bit of sharp knuckle-tooth described in claim 1,2 or 3, it is characterized in that: described sharp knuckle-tooth is positioned at the center position of described matrix front end end face, the tip sensing of described sharp knuckle-tooth and the angle between dead ahead are α, 90 ° of 0 °≤α <.
5. the micro-coring bit of sharp knuckle-tooth according to claim 4, is characterized in that: the span of described angle α is 45 ° of 0 °≤α <.
6. the micro-coring bit of sharp knuckle-tooth according to claim 4, is characterized in that: the rear portion of described sharp knuckle-tooth and the angle between dead ahead are β 90 ° of 0 °≤β <.
7. the micro-coring bit of sharp knuckle-tooth according to claim 6, is characterized in that: described sharp knuckle-tooth has side corner γ 20 ° of-20 °≤γ <.
8. according to the micro-coring bit of sharp knuckle-tooth described in claim 1,2 or 3, it is characterized in that: described sharp knuckle-tooth is positioned at the position in outside, described matrix front end end face center, described in described sharp knuckle-tooth is positioned at the tip of described sharp knuckle-tooth away from the distance of described matrix front end end face center position, get core space and be limited.
9. according to the micro-coring bit of sharp knuckle-tooth described in claim 1,2 or 3, it is characterized in that: the micro-coring bit of described sharp knuckle-tooth is for creep into PDC matrix drill bits, creep into PDC steel body bit or creep into impregnated bit comprehensively comprehensively comprehensively, and bit diameter is 4 " to 26 " between.
10. according to the micro-coring bit of sharp knuckle-tooth described in claim 1,2 or 3, it is characterized in that: on described matrix, between adjacent described wing, position is provided with hydrophthalmia, the diameter of the described hydrophthalmia of close described sharp knuckle-tooth is greater than the diameter of described small rock core, and the nozzle of the described hydrophthalmia of close described sharp knuckle-tooth is fixed or type variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724505.3U CN203547543U (en) | 2013-11-15 | 2013-11-15 | Mini-sized coring bit with sharp and round tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320724505.3U CN203547543U (en) | 2013-11-15 | 2013-11-15 | Mini-sized coring bit with sharp and round tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547543U true CN203547543U (en) | 2014-04-16 |
Family
ID=50465672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320724505.3U Expired - Lifetime CN203547543U (en) | 2013-11-15 | 2013-11-15 | Mini-sized coring bit with sharp and round tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547543U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420045A (en) * | 2016-05-23 | 2017-12-01 | 瓦瑞尔欧洲联合股份公司 | Fixation cutter drill bit with the core holder with spill core cutter |
| CN111456642A (en) * | 2019-01-18 | 2020-07-28 | 西南石油大学 | Micro-core composite drill bit |
| CN113982491A (en) * | 2020-07-26 | 2022-01-28 | 中石化石油工程技术服务有限公司 | Micro-core PDC drill bit with bevel gear structure |
-
2013
- 2013-11-15 CN CN201320724505.3U patent/CN203547543U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420045A (en) * | 2016-05-23 | 2017-12-01 | 瓦瑞尔欧洲联合股份公司 | Fixation cutter drill bit with the core holder with spill core cutter |
| CN111456642A (en) * | 2019-01-18 | 2020-07-28 | 西南石油大学 | Micro-core composite drill bit |
| CN113982491A (en) * | 2020-07-26 | 2022-01-28 | 中石化石油工程技术服务有限公司 | Micro-core PDC drill bit with bevel gear structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105772809B (en) | A kind of manufacturing method of drill bit and drill bit | |
| CN202317274U (en) | Diamond composite reamer for intermittent stepped deep hole processing | |
| CN203547543U (en) | Mini-sized coring bit with sharp and round tooth | |
| CN206693919U (en) | Drill hole of drilling machine reaming bit | |
| CN205259949U (en) | Large aperture creeps into drill bit | |
| CN105298392B (en) | A kind of quick expanding method and structure | |
| CN203867473U (en) | Balling-proof PDC drill bit | |
| CN203499567U (en) | Self-breaking type micro coring drill bit | |
| CN203961791U (en) | Three grades of reamers with cutting teeth | |
| CN204457449U (en) | One can open and close type diamond compact bit | |
| CN205654301U (en) | Ream bit is prevented burying by multiple wing diamond compact piece | |
| CN211974885U (en) | PDC drill bit suitable for plastic shale stratum creeps into fast | |
| CN204476287U (en) | Composite teeth | |
| CN203961800U (en) | Three wing combination tooth polycrystalline diamond compact bits | |
| CN202706923U (en) | Reinforced polycrystalline diamond compact (PDC) drill | |
| CN104632082A (en) | Composite tooth | |
| CN206009948U (en) | A kind of jackrod structure of drill bit | |
| CN202731756U (en) | Diamond compact concave drill bit of | |
| CN206455210U (en) | A kind of end face cross hard alloy cutting drill head with symmetric windows | |
| CN204894138U (en) | Eccentric cut nail sieve bores | |
| CN203362767U (en) | Tapping screw | |
| CN208885192U (en) | A kind of drill bit that point knuckle-tooth wing is spaced apart | |
| CN207453975U (en) | A kind of drilling pipe for the core that can break online | |
| CN203655166U (en) | PDC drill bit drilling fast | |
| CN204449428U (en) | Chip-removal drill bit in a kind of |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |