CN205477377U - Rotatable PDC drill bit - Google Patents
Rotatable PDC drill bit Download PDFInfo
- Publication number
- CN205477377U CN205477377U CN201620024218.5U CN201620024218U CN205477377U CN 205477377 U CN205477377 U CN 205477377U CN 201620024218 U CN201620024218 U CN 201620024218U CN 205477377 U CN205477377 U CN 205477377U
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- drill bit
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- pdc
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Abstract
The utility model discloses a rotatable PDC drill bit. The drill bit includes wing and the cutting teeth on the wing on the drill bit base member, and the cutting teeth includes the diamond cutting blade that base and cutting face set up, wherein diamond cutting blade solidifies with the rotator, and the rotator passes through the ball and rotates in the base, the base is the groove structure that the carbide material was made, and the rotator passes through the ball and rotates in the base recess, there is closed ball mounting hole on the base recess wall. This drill bit can realize at the drill bit during operation that 360 degrees last rotatoryly, and its cutting blade expands whole tooth circumference surface to, greatly increased the wear resistance of compound piece, the compound piece of the conventional fixed PDC that can not rotate of its circumference surface blade degree of wear reduces by a wide margin, the blade keeps sharp state for a long time, and its stock -removing efficiency is high, creeps into the average mechanical drilling speed that rotatable composite bit reaches after the same well segment length and will be higher than the conventional fixed PDC composite bit that can not rotate.
Description
Technical field
This utility model belongs to the rotary drilling drill bit design field of a kind of oil, geology, the drill bit structure that can automatically rotate particularly to a kind of PDC composite sheet cutting edge.
Background technology
At present, in the field such as oil, geological prospecting carries out drillng operation, use PDC composite sheet the most extensive as rotary drilling drill bit (abbreviation PDC drill bit) application of cutting tooth.The advantages such as it is high that PDC drill bit has rate of penetration, footage per bit life-span length.
In sandstone creeps into, owing to sandstone abrasiveness is strong, the abrasion of PDC composite sheet is very fast.After PDC composite sheet may wear to a certain degree, its wedging stratum ability weakens rapidly, and rate of penetration only trips out drill bit after declining therewith, enters green bit down and creeps into.The service life of PDC drill bit is caused bigger negative effect by the sandstone formation that abrasiveness is strong.
Repair although can carry out the PDC composite sheet wearing and tearing little on the old drill bit tripped out rotating, the cutting edge of abrasion is rotated to non-cutting position, unworn cutting edge is rotated to cutting position, well use is again entered after fixing for PDC composite sheet, but the quality repairing drill bit has a certain degree of decline compared with former drill bit, and multiple trips drill bit wastes substantial amounts of drilling time, it is unfavorable for the raising of drilling well timeliness.The solution of general applicability is there is no at present for the sandstone formation that abrasiveness is strong.
Summary of the invention
This utility model discloses a kind of rotatable PDC drill bit according to the deficiencies in the prior art.Problem to be solved in the utility model be aiming at above-mentioned prior art exist defect, it is provided that one can fast drilling, the rotatable PDC compact bit structure in PDC drill bit service life can be greatly improved again.
This utility model is achieved through the following technical solutions:
Rotatable PDC drill bit, including the wing on bit matrix and the cutting tooth being fixed on wing, it is characterised in that: described cutting tooth includes the Diamond Cutting cutting edge that pedestal and cutting face are arranged；Wherein Diamond Cutting cutting edge consolidates with rotary body, and rotary body is rotated in pedestal by ball.
Described pedestal is the groove structure that hard alloy material is made, and rotary body is that hard alloy material makes T-shaped structure, the surface consolidated diamond cutting edge of T-shaped structure, and the other end is rotated in base recess by ball.
Closed ball installing hole is had on described base recess wall.
This utility model rotatable PDC compact bit includes pedestal and rotary body.Pedestal is hard alloy material, structure hollow revolving structure, rotary body is diamond layer cutting edge and the ledge structure revolving body of cemented carbide body composition, diamond layer and the faying face of cemented carbide body and bonding way thereof are with conventional PDC tooth, pedestal and rotary body carry out coupling cooperation by roller bearing structure, and rotary body can carry out 360 degree of rotations in pedestal.
When drill bit is on underground work cutting stratum, the rotary body of rotatable PDC composite sheet is sustainable carries out 360 degree of rotations, pass through spinning, composite sheet diamond layer cutting edge is expanded to whole circumferential surface from local chord length section, considerably increase the ruggedness of composite sheet, use in the stratum that abrasiveness is strong and can play obvious action.
This utility model has the beneficial effect that this rotatable PDC compact bit and original PDC compact bit its cutting scheme when PDC drill bit works are identical, therefore same drilling condition it is suitable for, such as identical stratum, the pressure of the drill, rotating speed etc., also can reach same rate of penetration simultaneously；This rotatable PDC compact bit achieves 360 degree and persistently rotates when bit operation, and its cutting edge expands whole tooth circumferential surface to, considerably increases the anti-wear performance of composite sheet, and drill bit single enters to be greatly improved the service life of well；Owing to the rotatable whole circumferential surface of PDC composite sheet is all the most alternately participating in cutting, the more conventional PDC composite sheet being fixed from rotating of its circumferential surface cutting edge degree of wear is greatly lowered.Cutting edge keeps sharp state for a long time, and its stock-removing efficiency is high, and the average rate of penetration that after creeping into identical well segment length, rotatable compact bit reaches is higher than the PDC compact bit that routine is fixed from rotating.
Accompanying drawing explanation
Fig. 1 is this utility model drill bit partial structurtes schematic diagram；
Fig. 2 is this utility model Cutter structural section schematic diagram；
Fig. 3 is this utility model Cutter feature cross-section schematic diagram, i.e. Fig. 2 Section A-A structural representation.
In figure, 1 is wing, and 2 is cutting tooth, and 3 is pedestal, and 4 is Diamond Cutting cutting edge, and 5 is rotary body, and 6 is ball, and 7 is installing hole.
Detailed description of the invention
Below by embodiment, this utility model is specifically described; embodiment is served only for being further detailed this utility model; it is not intended that the restriction to this utility model protection domain, some nonessential improvement and adjustment that those skilled in the art makes according to content of the present utility model fall within the scope that this utility model is protected.
In conjunction with Fig. 1 to Fig. 3.
As it can be seen, rotatable PDC drill bit, including the wing 1 on bit matrix and the cutting tooth 2 being fixed on wing 1, cutting tooth 2 includes the Diamond Cutting cutting edge 4 that pedestal 3 and cutting face are arranged；Wherein Diamond Cutting cutting edge 4 consolidates with rotary body 5, and rotary body 5 is rotated in pedestal 3 by ball 6.
Pedestal 3 is the groove structure that hard alloy material is made, and rotary body 5 is that hard alloy material makes T-shaped structure, the surface consolidated diamond cutting edge 4 of T-shaped structure, and the other end is rotated in pedestal 3 groove by ball 6.Closed ball 6 installing hole 7 is had in pedestal 3 groove walls.
As shown in Figure 1, the cutting tooth 2 that PDC drill bit is dependent on being arranged on bit body cuts stratum, these cutting teeth 2 have compact structure, it is typically to be fixed on wing 1 multiple cutting teeth 2, Fig. 1 is this utility model drill bit partial structurtes schematic diagram, illustrates the cutting tooth 2 sectional structure schematic diagram being fixed on wing 1 in figure.
Fig. 2 is this utility model Cutter structural section schematic diagram；Fig. 3 is this utility model Cutter feature cross-section schematic diagram, i.e. Fig. 2 Section A-A structural representation.As it can be seen, cutting tooth 2 includes the Diamond Cutting cutting edge 4 that pedestal 3 and cutting face are arranged；Wherein Diamond Cutting cutting edge 4 consolidates with rotary body 5, and rotary body 5 can be rotated in pedestal 3 by ball 6；Pedestal 3 is the groove structure that hard alloy material is made, and rotary body 5 is that hard alloy material makes T-shaped structure, the surface consolidated diamond cutting edge 4 of T-shaped structure, and the other end is rotated in base recess by ball 6.Closed ball installing hole 7 is had in pedestal 3 groove walls.
When drill bit is on underground work cutting stratum, the rotary body 5 of rotatable PDC composite sheet is sustainable carries out 360 degree of rotations, pass through spinning, composite sheet diamond layer cutting edge 4 is expanded to whole circumferential surface from local chord length section, considerably increase the ruggedness of composite sheet, use in the stratum that abrasiveness is strong and can play obvious action.
This utility model drill bit adds man-hour, pedestal 3 and rotary body 5 contact site matched in clearance, and ball 6 rolls in the ball grooves of Corresponding matching, has preferable rigidity, uses closed ball installing hole 7 to install ball simultaneously, processes more convenient.
Claims (3)
1. a rotatable PDC drill bit, including the wing (1) on bit matrix be fixed on wing (1)
On cutting tooth (2), it is characterised in that: described cutting tooth (2) includes pedestal (3) and cutting face
The Diamond Cutting cutting edge (4) arranged；Wherein Diamond Cutting cutting edge (4) is solid with rotary body (5)
Knot, rotary body (5) is rotated in pedestal (3) by ball (6).
Rotatable PDC drill bit the most according to claim 1, it is characterised in that: described pedestal (3)
Being the groove structure made of hard alloy material, rotary body (5) is that hard alloy material makes T-shaped knot
Structure, surface consolidated diamond cutting edge (4) of T-shaped structure, the other end passes through ball (6) at base
Seat (3) groove rotates.
Rotatable PDC drill bit the most according to claim 2, it is characterised in that: described pedestal (3)
Closed ball (6) installing hole (7) is had in groove walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620024218.5U CN205477377U (en) | 2016-01-11 | 2016-01-11 | Rotatable PDC drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620024218.5U CN205477377U (en) | 2016-01-11 | 2016-01-11 | Rotatable PDC drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477377U true CN205477377U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620024218.5U Active CN205477377U (en) | 2016-01-11 | 2016-01-11 | Rotatable PDC drill bit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205477377U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639890A (en) * | 2016-12-06 | 2017-05-10 | 中国石油天然气股份有限公司 | Composite drill bit |
| CN107816322A (en) * | 2016-09-14 | 2018-03-20 | 中国石油集团钻井工程技术研究院 | The inside and outside row's cutting tooth linkage of ONYX360 ° of rotation PDC drill bit and method |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
| CN111877994A (en) * | 2020-08-24 | 2020-11-03 | 刘伟 | PDC drill bit with axially-impacted cutting teeth |
| CN117803317A (en) * | 2024-03-01 | 2024-04-02 | 四川中铁二院环保科技有限公司 | Drill bit used in diamond drilling and coring process |
-
2016
- 2016-01-11 CN CN201620024218.5U patent/CN205477377U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816322A (en) * | 2016-09-14 | 2018-03-20 | 中国石油集团钻井工程技术研究院 | The inside and outside row's cutting tooth linkage of ONYX360 ° of rotation PDC drill bit and method |
| CN106639890A (en) * | 2016-12-06 | 2017-05-10 | 中国石油天然气股份有限公司 | Composite drill bit |
| CN108533183A (en) * | 2018-06-22 | 2018-09-14 | 西南石油大学 | The PDC drill bit of passive swivel nozzle is provided on a kind of wing |
| CN108533183B (en) * | 2018-06-22 | 2023-08-15 | 西南石油大学 | PDC drill bit with passive rotary nozzle arranged on blade |
| CN111877994A (en) * | 2020-08-24 | 2020-11-03 | 刘伟 | PDC drill bit with axially-impacted cutting teeth |
| CN117803317A (en) * | 2024-03-01 | 2024-04-02 | 四川中铁二院环保科技有限公司 | Drill bit used in diamond drilling and coring process |
| CN117803317B (en) * | 2024-03-01 | 2024-05-03 | 四川中铁二院环保科技有限公司 | Drill bit used in diamond drilling and coring process |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |