CN2777174Y - PDC full scale advacing sharp teeth strengthened type dilling bit - Google Patents
PDC full scale advacing sharp teeth strengthened type dilling bit Download PDFInfo
- Publication number
- CN2777174Y CN2777174Y CN 200520016188 CN200520016188U CN2777174Y CN 2777174 Y CN2777174 Y CN 2777174Y CN 200520016188 CN200520016188 CN 200520016188 CN 200520016188 U CN200520016188 U CN 200520016188U CN 2777174 Y CN2777174 Y CN 2777174Y
- Authority
- CN
- China
- Prior art keywords
- tooth
- main cutting
- drilling
- creeps
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a PDC full drilling sharp tooth strengthened type drilling bit which is comprises a drilling bit body 1, wherein a knife wing 3 and a water spray hole 2 are arranged on the drilling bit body, a plurality of main cutting teeth 4 which are orderly ranged are arranged on the knife wing, and the main cutting teeth adopt man-made poly-crystal diamond composite sheets. The utility model is characterized in that a group of drilling sharp teeth which are in the shape of a canine tooth is inlaid on the back face of the main cutting teeth, and the drilling sharp teeth adopt man-made poly-crystal diamond composite sheets. The traditional cutting mode is changed into a plough cutting mode of the utility model to cause the drilling speed of a machine to be enhanced by 50 percent, the abrasion of the main cutting teeth can be reduced and the service life of the drilling bit is prolonged.
Description
Technical field
The utility model relates to a kind of PDC and creeps into pointed tooth reinforcement teeth drill bit comprehensively, and this drill bit is the PDC drill bit that is used for the geology directed drilling, inlays one group of pointed tooth in main cutting tooth back, and with the thickening of main cutting tooth, can improve drilling efficiency and prolong bit life.
Background technology
Chinese patent 03215800.9 discloses a kind of rotary steerable drilling PDC drill bit, belongs to the architecture advances of petroleum gas Directional PDC Bits.Its main feature is the very strong PDC composite sheet of side cutting power of having protected on the piece of footpath insert, it is all shorter effectively to protect footpath and total length, the PDC composite sheet of two kinds of sizes of insert size on the operative end surface also adopts more smooth bizet profile, helical form wing and helical form to protect structures such as footpath.Thereby this utility model has that rate of penetration is fast, the property led is good, good stability, long advantage of life-span, is used with rotary steerable drilling system, helps improving the drilling efficiency of directional well, horizontal well or extended reach well.But this patent is not high at harder relatively rock stratum drilling efficiency.Therefore, need to propose a kind of new PDC and creep into pointed tooth reinforcement teeth drill bit comprehensively.
Summary of the invention
The purpose of this utility model is to provide a kind of PDC to creep into pointed tooth reinforcement teeth drill bit comprehensively, and this drill bit is to inlay one group of pointed tooth in main cutting tooth back, and adopts thickening type main cutting tooth, thus, can improve drilling efficiency and prolong bit life.
The purpose of this utility model is realized by following technical proposals: a kind of PDC creeps into pointed tooth comprehensively and strengthens teeth drill bit, a bit body is arranged, this bit body is provided with wing, hole for water spraying, described wing is provided with a plurality of main cutting teeth of arranging in regular turn, this main cutting tooth adopts the man-made polycrystalline diamond composite sheet, its main points are: the pointed tooth that creeps into of one group of canine tooth shape is inlayed in described main cutting tooth back, and this creeps into pointed tooth and adopts the man-made polycrystalline diamond composite sheet.
Compared with the prior art the utility model has following advantage:
1, the utility model is changed into the plow mode with traditional cutting way, can reduce the wearing and tearing of main cutting tooth greatly, improves drilling life of bit.
2, main cutting tooth of the present utility model with creep into that pointed tooth is ingenious to be combined, can make rate of penetration improve 50%.
3, because the pointed tooth that creeps into of the present utility model adopts mosaic mode and wing to install, save the space, the main cutting tooth has been adopted thicken the enhancing structure, improved drilling life of bit.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples
Fig. 1 is an operative end surface structural representation of the present utility model
Fig. 2 is the pointed tooth position view (A of Fig. 1 is to view) that creeps into of the present utility model
Fig. 3 is the pointed tooth mosaic structure figure (the B-B sectional view of Fig. 1) that creeps into of the present utility model
Fig. 4 is the pointed tooth structural representation that creeps into of the present utility model
Fig. 5 is the pointed tooth right side view (right side view of Fig. 4) that creeps into of the present utility model
Fig. 6 is the PDC sheet that creeps into pointed tooth of the present utility model
The specific embodiment
Referring to Fig. 1, Fig. 2, PDC of the present utility model creeps into pointed tooth comprehensively and strengthens teeth drill bit, also can be described as the man-made polycrystalline diamond composite drill bit, this drill bit has a bit body 1, this bit body is provided with wing 3, hole for water spraying 2, chip area, described wing is provided with a plurality of main cutting teeth of arranging in regular turn 4, this main cutting tooth adopts man-made polycrystalline diamond composite sheet (also can be described as the PDC sheet), in the present embodiment, the wing on described bit body, the bit body, hole for water spraying, chip area can adopt the structure identical with prior art; The used man-made polycrystalline diamond composite sheet of main cutting tooth is a disk shape, and this composite polycrystal-diamond is fixed on the toothholder 5.What be inlaid with one group of canine tooth shape in main cutting tooth back creeps into pointed tooth 6, and this creeps into pointed tooth and adopts man-made polycrystalline diamond composite sheet (also can be described as the PDC sheet).Referring to Fig. 3, Fig. 4, Fig. 5, creep into pointed tooth and be fixed on the toothholder 7, this toothholder adopts mosaic mode to be planted in the hole on the wing, and this toothholder adopts the YG8 Hardmetal materials.Describedly creep into the shoulder that pointed tooth is positioned at described wing, the tooth tip of creeping into pointed tooth is higher than described main cutting tooth.In the present embodiment, the tooth tip of creeping into pointed tooth goes out the 0-5 millimeter than main cutting tooth depth, and the height that the best exceeds is the 1.5-2 millimeter.
In the PDC of prior art drill bit, the size of the wing on its bit body, hole for water spraying, chip area has strict structural limitations, and the main cutting tooth on its wing can not strengthen arbitrarily, and this will influence the raising of drilling life of bit.In the present embodiment, this toothholder that creeps into pointed tooth adopts mosaic mode to be planted on the wing, can save limited space, and described main cutting tooth adopts enhancement mode man-made polycrystalline diamond composite sheet, so-called enhancement mode man-made polycrystalline diamond composite sheet is exactly that traditional man-made polycrystalline diamond composite sheet thickness is increased 0.5-1 thickness doubly, increases drilling life of bit thus.Referring to Fig. 6, in the present embodiment, the bottom of creeping into pointed tooth is a semicircle shape 602, and its top is an isosceles triangle, and its top has one blunt 601.
When polycrystalline diamond composite drill bit of the present utility model is worked, it creeps into pointed tooth contact stratum earlier, on rock, cut out the stress relief grooves of an annular in advance, play the effect of broken formation in advance, the main cutting tooth of disk shape contacts the stratum more then, with the mode of plow rock cutting more in depth more comprehensively, this product is through certain oil field service test, and its rate of penetration has improved 50%.
Claims (2)
1, a kind of PDC creeps into pointed tooth reinforcement teeth drill bit comprehensively, a bit body (1) is arranged, this bit body is provided with wing (3), hole for water spraying (2), described wing is provided with a plurality of main cutting teeth of arranging in regular turn (4), this main cutting tooth adopts the man-made polycrystalline diamond composite sheet, it is characterized in that: what one group of canine tooth shape was inlayed in described main cutting tooth back creeps into pointed tooth (6), and this creeps into pointed tooth and adopts the man-made polycrystalline diamond composite sheet.
2, PDC according to claim 1 creeps into pointed tooth reinforcement teeth drill bit comprehensively, it is characterized in that: describedly creep into the shoulder that pointed tooth is positioned at described wing, the tooth tip of creeping into pointed tooth is higher than described main cutting tooth, and described main cutting tooth adopts enhancement mode man-made polycrystalline diamond composite sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016188 CN2777174Y (en) | 2005-04-18 | 2005-04-18 | PDC full scale advacing sharp teeth strengthened type dilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016188 CN2777174Y (en) | 2005-04-18 | 2005-04-18 | PDC full scale advacing sharp teeth strengthened type dilling bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2777174Y true CN2777174Y (en) | 2006-05-03 |
Family
ID=36744559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520016188 Expired - Fee Related CN2777174Y (en) | 2005-04-18 | 2005-04-18 | PDC full scale advacing sharp teeth strengthened type dilling bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2777174Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196458A (en) * | 2014-08-26 | 2014-12-10 | 莱州市原野科技有限公司 | Sharp-tooth PDC drill bit |
| CN105275403A (en) * | 2014-07-01 | 2016-01-27 | 中国石油化工集团公司 | A plowing type PDC drill bit suitable for hard formations |
| CN109707317A (en) * | 2018-12-25 | 2019-05-03 | 王太锋 | A kind of NEW TYPE OF COMPOSITE piece drill bit |
-
2005
- 2005-04-18 CN CN 200520016188 patent/CN2777174Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275403A (en) * | 2014-07-01 | 2016-01-27 | 中国石油化工集团公司 | A plowing type PDC drill bit suitable for hard formations |
| CN104196458A (en) * | 2014-08-26 | 2014-12-10 | 莱州市原野科技有限公司 | Sharp-tooth PDC drill bit |
| CN109707317A (en) * | 2018-12-25 | 2019-05-03 | 王太锋 | A kind of NEW TYPE OF COMPOSITE piece drill bit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2777175Y (en) | Poly-crystal diamond composite drilling bit having advancing sharp teeth | |
| CN206280004U (en) | A kind of mixing PDC drill bit with multiple cutting function | |
| CN101560869B (en) | Convex head deflective wedge tooth | |
| CN2777174Y (en) | PDC full scale advacing sharp teeth strengthened type dilling bit | |
| CN204082017U (en) | The long gauge negative pressure antiimpact PDC drill bit of a kind of ultradeep well | |
| CN202431207U (en) | Composite cutting teeth structure for PDC (polycrystalline diamond compact) bit | |
| CN203847004U (en) | PDC drill bit with high drilling rate | |
| CN104018783A (en) | High-drilling-speed PDC drill bit | |
| CN201874472U (en) | PDC (Polycrystalline Diamond Compact) bit with double rows of teeth | |
| CN202832221U (en) | Polycrystalline diamond compact (PDC) bit drill suitable for conglomeratic stratum | |
| CN204024482U (en) | A kind of combined type PDC drill bit | |
| CN204266929U (en) | A kind of diamond bit with gauge structure | |
| CN203515331U (en) | PDC (polycrystalline diamond compact) drill bit with special gauge protection | |
| CN201347722Y (en) | Pre-crushing stress PDC drill bit | |
| CN103603604A (en) | Balling-resistant PDC (polycrystalline diamond compact) drill bit with pits in surfaces of flow passages | |
| CN2297177Y (en) | New tooth shape for tri-cone rotary drill bit | |
| CN203603766U (en) | Mud drum resistant PDC drill bit with pit runner surface | |
| CN103184833A (en) | Diamond bit with large saw-teeth | |
| CN203978295U (en) | The Mixed drilling bit of a kind of triangular polycrystalline diamond and impregnated tooth | |
| CN202673157U (en) | Double-cone deflective wedge tooth | |
| CN203891773U (en) | High performance six-blade polycrystalline diamond compact (PDC) bit | |
| CN202202814U (en) | Polycrystalline diamond compact (PDC) anchor bit | |
| CN102587839A (en) | Polycrystalline diamond compact drill bit | |
| CN202194576U (en) | Three-knife wing diamond bit | |
| CN2677582Y (en) | Convex wedge cutting teeth for roller bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060503 Termination date: 20130418 |