CN211230253U - Anti-balling drill bit with conical teeth - Google Patents
Anti-balling drill bit with conical teeth Download PDFInfo
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- CN211230253U CN211230253U CN201922364930.6U CN201922364930U CN211230253U CN 211230253 U CN211230253 U CN 211230253U CN 201922364930 U CN201922364930 U CN 201922364930U CN 211230253 U CN211230253 U CN 211230253U
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Abstract
The utility model provides a cone-shaped tooth anti-mud bag drill bit, the drill bit body comprises a middle drill bit body and a lower drill bit body, three blades are evenly arranged on the outer circumference of the lower drill bit body at intervals, one main blade passes through the central axis of the drill bit body, the crown parts of two auxiliary blades are positioned at two sides of the main blade, and a chip groove is arranged between the adjacent blades; hard alloy teeth are arranged on the blade gauge part and the crown part, tapered cutting teeth are arranged on the side part of the blade along the length direction, and tapered cutting teeth are arranged on the extension part of the main blade; a circumferential water hole is arranged at a chip groove on the lower bit body, and a central water hole is arranged between the crown part of the auxiliary blade and the extension part of the main blade; the circumferential port and the central port are in communication with the internal flow passage of the bit body. The utility model discloses a conical cutter can plough the stratum more effectively, adopts the wing of large area low density to set up, can effectively reduce the drill bit mud pocket, and circumference water hole and center water hole can increase the washing of drilling fluid to the wing, avoid appearing the mud pocket phenomenon.
Description
Technical Field
The utility model belongs to the technical field of oil drilling instrument, especially, relate to a mud pocket drill bit is prevented to tapered tooth.
Background
At present, in the drilling process in the field of petroleum and natural gas, compared with a roller bit, the PDC bit has the advantages of few movable parts, stable structure, few single-well drilling trip times, high mechanical drilling speed, long bit footage, long service life and the like, so that the PDC bit has higher economic applicability when being used in medium-deep strata.
The medium-deep stratum rock often has the characteristics of high strength, high hardness, poor drillability, strong grindability and the like, and the conventional PDC drill bit is very easy to have the phenomena of tooth falling, serious abrasion and the like when drilling in such stratum, so that the problems of short service life, long drilling period and the like of the drill bit exist, and the requirement of high-efficiency rock breaking cannot be met. Meanwhile, due to the compaction effect, the rock strength of the medium-depth stratum is high, the drillability is low, and particularly, the mud pocket phenomenon is easy to occur in the shale stratum. The mud pocket phenomenon is that in the drilling engineering, rock debris is not easy to discharge and wraps the surface of a drill bit to form a mud pocket drill bit. The mud bag drill bit causes the drilling speed to drop, and the drilling efficiency is reduced, even causes serious drilling accidents such as well leakage.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a mud pocket drill bit is prevented to tapered tooth.
In order to achieve the purpose, the utility model provides a cone-shaped tooth anti-balling drill bit, which comprises a drill bit body and a screw thread, wherein the drill bit body is connected with an upper drill rod through the screw thread, and the drill bit body comprises a middle drill bit body and a lower drill bit body; three blades are uniformly arranged on the outer circumference of the lower bit body at intervals, one main blade penetrates through the central axis of the bit body, the crowns of two auxiliary blades are positioned at two sides of the main blade, and a chip groove is formed between the adjacent blades;
hard alloy teeth are arranged on the blade gauge part and the crown part, tapered cutting teeth are arranged on the side part of the blade along the length direction, and tapered cutting teeth are arranged on the extension part of the main blade;
a circumferential water hole is arranged at a chip groove on the lower bit body, and a central water hole is arranged between the crown part of the auxiliary blade and the extension part of the main blade; the circumferential port and the central port are in communication with the internal flow passage of the bit body.
Furthermore, the middle drill bit body is symmetrically provided with shackle caps.
Furthermore, the joint of the screw thread and the middle bit body is chamfered at an angle of 45 degrees, and the joint of the lower bit body and the middle bit body is chamfered at an angle of 45 degrees.
Furthermore, the cutting surface of the conical cutting tooth is in a non-flat triangular pyramid shape.
The utility model has the advantages that:
(1) the utility model provides a profile tooth prevents mud bag drill bit compares in traditional PDC drill bit, and a profile tooth prevents mud bag drill bit can creep into the abrasiveness stereoplasm ground more high-efficiently, and on the profile tooth can be applyed a higher concentration point load to the stratum rock because of its unique toper shape, high-efficient plough ground layer combines the cutting effect of carbide tooth, is showing improvement mechanical drilling speed, improves and creeps into the chi.
(2) The utility model provides a balling bit is prevented to tapered tooth, the wing of large area low density sets up, through the width that increases the drill bit wing, under the prerequisite that effectively bears the weight of the bit and the dead weight of drilling tool in the pit, can effectively reduce the drill bit balling, improves the mechanical drilling speed, reduces the drilling accident.
(3) The circumference water hole and the center water hole are communicated with the internal flow channel of the drill bit body, and the water holes are protruded, so that the injection distance can be shortened, the flushing of drilling fluid to the blade is increased, and the phenomenon of mud bag is avoided.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the present invention.
Fig. 2 is a schematic bottom view of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a conical cutting tooth according to an embodiment of the present invention.
Wherein: the thread comprises a thread 1, a shackle cap 2, a tapered cutting tooth 301, a cemented carbide tooth 302, blades 5, main blades 51, auxiliary blades 52, junk slots 53, a gauge 501, a crown 502, a side 503, an extension 504, a middle bit body 701, a lower bit body 702, a circumferential water hole 801 and a central water hole 802.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in fig. 1-2, the present invention provides a cone-shaped tooth anti-balling drill bit, which comprises a bit body and a screw thread 1, wherein the bit body is connected with an upper drill rod through the screw thread 1, and the bit body comprises a middle bit body 701 and a lower bit body 702; three blades 5 are uniformly arranged on the outer circumference of the lower bit body 702 at intervals, one main blade 51 penetrates through the central axis of the bit body, the crowns 502 of two auxiliary blades 52 are positioned at two sides of the main blade 51, and a chip groove 53 is formed between the adjacent blades; carbide teeth 302 are arranged on the blade gauge part 501 and the crown part 502, tapered cutting teeth 301 are arranged on the blade side part 503 along the length direction, and tapered cutting teeth 301 are arranged on the extension part 504 of the main blade 51; circumferential water holes 801 are provided at junk slots 53 in lower bit body 702, and a central water hole 802 is provided between crown 502 of sub-blade 52 and extension 504 of main blade 51.
The screw thread 1 in the embodiment is arranged at the top end of the drill bit body and is connected with an upper drill rod through threads, so that the function of transmitting weight-on-bit torque is achieved. The screw thread is connected with the middle bit body 701, and the left side and the right side of the middle bit body 701 are symmetrically provided with the shackle caps 2. The junction of the screw thread 1 and the middle bit body 701 is chamfered at 45 degrees, and the junction of the lower bit body 702 and the middle bit body 701 is chamfered at 45 degrees.
Three blades 5 are arranged in a large area and low density, so that the bit mud pocket can be effectively reduced. Meanwhile, the width of the blade of the drill bit is increased, so that the bit pressure and the dead weight of the underground drilling tool can be effectively borne.
As shown in fig. 3, the tapered cutting element 301 is formed by using cemented tungsten carbide as a base, and covering a diamond layer on the top, and the cutting surface of the cutting element is formed in an uneven triangular pyramid shape. The main blade 51 is provided with 12 conical cutting teeth, and the sub blade 52 is provided with 9 conical cutting teeth. 4 tapered cutting teeth are provided on the extension 504 of the main blade.
The circumferential water hole 801 and the central water hole 802 are communicated with an internal flow channel of the bit body, and the water holes are protruded, so that the injection distance can be shortened, the flushing of drilling fluid to blades is increased, and the phenomenon of mud pocket is avoided.
Be different from prior art's condition, the utility model provides a profile tooth prevents mud bag drill bit compares in traditional PDC drill bit, and a profile tooth prevents mud bag drill bit and can creep into the abrasiveness stereoplasm stratum more high-efficiently, and the profile tooth can be because of its unique toper shape, can apply a higher concentration point load to the stratum rock on, and high-efficient plough stratum combines the cutting effect of carbide tooth, is showing improvement mechanical drilling speed, improves and creeps into the footage. The utility model provides a wing setting of big regional low density, through the width that increases the drill bit wing, under the prerequisite of effectively bearing weight on bit and drilling tool dead weight in the pit, can effectively reduce the drill bit mud bag, improve the mechanical drilling speed, reduce the well drilling accident.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (4)
1. A cone-shaped tooth anti-mud-pocket drill bit comprises a drill bit body and a screw thread (1), wherein the drill bit body is connected with an upper drill rod through the screw thread (1), the drill bit body comprises a middle drill bit body (701) and a lower drill bit body (702), and the cone-shaped tooth anti-mud-pocket drill bit is characterized in that: three blades (5) are uniformly arranged on the outer circumference of the lower bit body (702) at intervals, one main blade (51) penetrates through the central axis of the bit body, the crowns (502) of two auxiliary blades (52) are positioned at two sides of the main blade (51), and a chip groove (53) is formed between the adjacent blades;
hard alloy teeth (302) are arranged on the blade gauge part (501) and the crown part (502), tapered cutting teeth (301) are arranged on the blade side part (503) along the length direction, and tapered cutting teeth (301) are arranged on the extension part (504) of the main blade (51);
a circumferential water hole (801) is formed in a chip removing groove (53) on the lower bit body (702), and a central water hole (802) is formed between a crown (502) of the auxiliary blade (52) and an extension (504) of the main blade (51); the circumferential port (801) and the central port (802) communicate with internal flow passages of the bit body.
2. The anti-balling drill bit with tapered teeth as claimed in claim 1, wherein: and the middle drill bit body (701) is symmetrically provided with shackle caps (2).
3. The anti-balling drill bit with tapered teeth as claimed in claim 1, wherein: the connection part of the screw thread (1) and the middle bit body (701) is chamfered at an angle of 45 degrees, and the connection part of the lower bit body (702) and the middle bit body (701) is chamfered at an angle of 45 degrees.
4. The anti-balling drill bit with tapered teeth as claimed in claim 1, wherein: the cutting surface of the conical cutting tooth (301) is in a non-flat triangular pyramid shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922364930.6U CN211230253U (en) | 2019-12-25 | 2019-12-25 | Anti-balling drill bit with conical teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922364930.6U CN211230253U (en) | 2019-12-25 | 2019-12-25 | Anti-balling drill bit with conical teeth |
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| Publication Number | Publication Date |
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| CN211230253U true CN211230253U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922364930.6U Active CN211230253U (en) | 2019-12-25 | 2019-12-25 | Anti-balling drill bit with conical teeth |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627737A (en) * | 2020-11-30 | 2021-04-09 | 安东通奥科技产业股份有限公司 | Reaming tool |
| CN113513262A (en) * | 2021-07-28 | 2021-10-19 | 山西蓝焰煤层气工程研究有限责任公司 | Horizontal well drilling horizontal section stratum collapse treatment tool and method |
| CN116641657A (en) * | 2023-07-25 | 2023-08-25 | 西南石油大学 | Anti-balling PDC drill bit |
-
2019
- 2019-12-25 CN CN201922364930.6U patent/CN211230253U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627737A (en) * | 2020-11-30 | 2021-04-09 | 安东通奥科技产业股份有限公司 | Reaming tool |
| CN113513262A (en) * | 2021-07-28 | 2021-10-19 | 山西蓝焰煤层气工程研究有限责任公司 | Horizontal well drilling horizontal section stratum collapse treatment tool and method |
| CN113513262B (en) * | 2021-07-28 | 2024-01-26 | 山西蓝焰煤层气工程研究有限责任公司 | Horizontal well drilling horizontal section stratum collapse treatment tool and method |
| CN116641657A (en) * | 2023-07-25 | 2023-08-25 | 西南石油大学 | Anti-balling PDC drill bit |
| CN116641657B (en) * | 2023-07-25 | 2023-09-29 | 西南石油大学 | Anti-balling PDC drill bit |
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