CN203050523U - Ploughing type diamond bit - Google Patents
Ploughing type diamond bit Download PDFInfo
- Publication number
- CN203050523U CN203050523U CN 201320018742 CN201320018742U CN203050523U CN 203050523 U CN203050523 U CN 203050523U CN 201320018742 CN201320018742 CN 201320018742 CN 201320018742 U CN201320018742 U CN 201320018742U CN 203050523 U CN203050523 U CN 203050523U
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- diamond
- diamond compact
- bit
- compact
- triangular
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Abstract
The utility model belongs to the technical field of petroleum geology well drilling devices, and particularly relates to a ploughing type diamond bit. The ploughing type diamond bit comprises a bit body, wherein a diamond compact is welded in a tooth socket of the bit body, the diamond compact comprises a round diamond compact, and a triangular diamond compact or a triangular thermal stable polycrystalline diamond (TSP) glomerocryst plate is welded to the position of an outer end surface of the round diamond compact. The ploughing type diamond bit is simple in structure and easy to realize, the front triangular diamond compact or the triangular TSP glomerocryst plate and the rear round diamond compact form a ploughshare in shape, and breaking of rocks is benefited. The triangular diamond compact or the triangular TSP glomerocryst plate and the round diamond compact are welded to the bit body in a brazed mode, the diamond compact is welded to the bit body in a brazed mode, and therefore the integral quality of the bit can be improved, and the service life of the bit is further prolonged.
Description
Technical field
The utility model relates to a kind of plow formula diamond bit, belongs to petroleum geology drilling rig technical field.
Background technology
Cutting teeth on the world, the employed diamond of domestic petroleum geological drilling circle and diamond compact (PDC) drill bit all is that disk or single shape such as triangle and taper shape are embedded on the bit body at present.As: all kinds of diamond compact bits of common use, triangular polycrystalline diamond (TSP) ballas drill bit, table edge circular cone glomerocryst and natural diamond bit, rock bit.More than the ubiquitous problem of these drill bits be that rate of penetration is slow, the life-span is short, picture diamond compact (PDC) drill bit, each composite sheet specific pressure when the scraping hard rock is big, and rock is crushed, if with specific pressure hour, then diamond compact is difficult for the wedging rock, can not form effective cutting, drill bit is skidded at rock, do not have drilling depth.Triangular polycrystalline diamond (TSP) ballas drill bit is relatively to adapt to the drill bit of beating hard formation, and his defective is more crisp, frangible, life-span weak point.After triangle was worn, rate of penetration obviously slowed down.The drill bit character that the drill bit of conical glomerocryst made and triangle glomerocryst are made is suitable, and the decline of its rate of penetration is faster.These two kinds of drill produced technologies are very complicated, cost of manufacture is high, and natural diamond table edge drill bit is because its particle is little, and it is few to inlay proud exposure, and rate of penetration is very slow like this, and material cost is too high, can not generally use.The rock bit life-span is short, the expense that makes a trip height, and downhole safety hidden danger is arranged.
In sum, not very desirable at hard petroleum geology drill bit to extremely hard formation at present, from well-drilling technology, dig a well with pneumatic drill like this, significantly improved bit speed, drilling depth is also very desirable, but the stratum water outlet just can't creep into, because at this moment can not be with the landwaste band earthward.
The utility model content
The technical problems to be solved in the utility model is: provide a kind of simple in structure, realize easily, and can improve the plow formula diamond bit of bit speed.
The utility model is that the technical scheme that its technical problem of solution adopts is: described plow formula diamond bit, comprise drill body, welding diamond compact in the tooth nest of drill body, diamond compact comprises circular diamond compact, place, outer face welding triangular shaped diamond composite sheet or the triangle T SP synneusis sheet of circular diamond compact.
Triangular shaped diamond composite sheet or triangle T SP synneusis sheet and circular diamond compact are combined to form the colter shape, be conducive to the fragmentation of rock, can increase substantially bit speed, reduce torque-on-bit, during work, triangular shaped diamond composite sheet or triangle T SP synneusis sheet are ploughed the crack of cracking to rock, the internal stress of rock is discharged, remove the rock confined pressure, make rock become loose, be conducive to the circular diamond compact in back to the scraping fragmentation of rock, and then improve drill bit to the breaking capacity of rock, improved bit speed, wherein, place, the outer face of described circular diamond compact welding triangular shaped diamond composite sheet or triangle T SP synneusis sheet, refer to that drill bit is in the rotary work process, triangular shaped diamond composite sheet or triangle T SP synneusis sheet are positioned at the front of circular diamond compact, carry out the fragmentation to rock earlier.
Described circular diamond compact outside is electroplated by electrophoretic deposition or chemistry is coated with one deck nichrome.Can make the diamond layer of circular diamond compact have braze-ability, and then improve the welding quality of triangle composite sheet and circular composite sheet.
Described triangular shaped diamond composite sheet is integrally welded by mode and the circular diamond compact of soldering or vacuum diffusion welding.Soldering distortion is little, and the joint smooth and beautiful appearance can improve the quality of diamond compact.
Described diamond compact is welded in the tooth nest of drill body by the mode of soldering.Can improve the total quality of drill bit, and then improve application life.
The beneficial effects of the utility model are:
Simple in structure, realize easily; The circular diamond compact of the triangular shaped diamond composite sheet of front or triangle T SP synneusis sheet and back is formed the colter shape, is conducive to the fragmentation of rock; Triangular shaped diamond composite sheet or triangle T SP synneusis sheet and circular diamond compact are welded on the drill body by brazing mode, diamond compact and drill body weld by brazing mode, can improve the total quality of drill bit, and then improve application life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of diamond compact.
Fig. 3 is that the sectional structure schematic diagram is looked on the left side of Fig. 2.
Fig. 4 is the structural representation that diamond compact is installed at coring bit.
Among the figure: 1, circular diamond compact 2, triangular shaped diamond composite sheet 3, drill body 4, coring bit body.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
As Fig. 1～shown in Figure 4, plow formula diamond bit described in the utility model, comprise drill body 3, be provided with diamond compact in the tooth nest of drill body 3, diamond compact is made of circular diamond compact 1 and the triangular shaped diamond composite sheet 2 that is welded on the circular diamond compact 1.Be coated with one deck nichrome by electrophoretic deposition plating or chemistry outside the circular diamond compact 1.Triangular shaped diamond composite sheet 2 is welded on the circular diamond compact 1 by the mode of soldering.Diamond compact is welded in the tooth nest of drill body 3 by the mode of soldering.
During work, start drill body 3, triangular shaped diamond composite sheet 2 is opened many slits to the rock plough, the internal stress of rock is discharged, remove the rock confined pressure, make rock become loose, the scraping fragmentation of 1 pair of rock of the circular diamond compact in back, wherein, described triangular shaped diamond composite sheet 2 is to determine according to the rotation of drill bit in circular diamond compact 1 front.
Being that example is carried out the experiment of profile of tooth effect, its experimental data such as following table at coring bit body 4 welding diamond compacts:
Wherein: drill bit sequence number 1 is to weld the drill bit (as shown in Figure 4) of triangular shaped diamond composite sheet and circular diamond compact on the coring bit body 4, and drill bit sequence number 2 is for only welding the drill bit of circular diamond compact on the coring bit body 4.
Under the hydraulic pressure situation identical with rod rotation speed, the rate of penetration of sequence number 1 drill bit has improved 68% than the rate of penetration of sequence number 2 drill bits as seen from the above table.
Claims (4)
1. plow formula diamond bit, comprise drill body (3), it is characterized in that: welding diamond compact in the tooth nest of drill body (3), diamond compact comprises circular diamond compact (1), place, outer face welding triangular shaped diamond composite sheet (2) or the triangle T SP synneusis sheet of circular diamond compact (1).
2. plow formula diamond bit according to claim 1 is characterized in that: circular diamond compact (1) is outside to be electroplated or chemistry is coated with one deck nichrome by electrophoretic deposition.
3. plow formula diamond bit according to claim 2, it is characterized in that: triangular shaped diamond composite sheet (2) is integrally welded by mode and the circular diamond compact (1) of soldering or vacuum diffusion welding.
4. according to claim 2 or 3 described plow formula diamond bits, it is characterized in that: diamond compact is welded in the tooth nest of drill body (3) by the mode of soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018742 CN203050523U (en) | 2013-01-14 | 2013-01-14 | Ploughing type diamond bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320018742 CN203050523U (en) | 2013-01-14 | 2013-01-14 | Ploughing type diamond bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050523U true CN203050523U (en) | 2013-07-10 |
Family
ID=48733488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320018742 Expired - Fee Related CN203050523U (en) | 2013-01-14 | 2013-01-14 | Ploughing type diamond bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061676A (en) * | 2013-01-14 | 2013-04-24 | 山东国岳金刚石制品有限公司 | Ploughing-cutting type diamond bit |
| CN108291427A (en) * | 2015-11-19 | 2018-07-17 | 史密斯国际有限公司 | Fixation bite drill bit with on-plane surface cutting element and other downhole tools above |
-
2013
- 2013-01-14 CN CN 201320018742 patent/CN203050523U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061676A (en) * | 2013-01-14 | 2013-04-24 | 山东国岳金刚石制品有限公司 | Ploughing-cutting type diamond bit |
| CN108291427A (en) * | 2015-11-19 | 2018-07-17 | 史密斯国际有限公司 | Fixation bite drill bit with on-plane surface cutting element and other downhole tools above |
| US10794118B2 (en) | 2015-11-19 | 2020-10-06 | Smith International, Inc. | Fixed cutter bits and other downhole tools having non-planar cutting elements thereon |
| CN108291427B (en) * | 2015-11-19 | 2021-01-05 | 史密斯国际有限公司 | Fixed cutter drill bits having non-planar cutting elements thereon and other downhole tools |
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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: 20130710 Termination date: 20170114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |