CN214616370U - Hole sweeping drill bit for drilling small-diameter deep well - Google Patents
Hole sweeping drill bit for drilling small-diameter deep well Download PDFInfo
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- CN214616370U CN214616370U CN202120187619.3U CN202120187619U CN214616370U CN 214616370 U CN214616370 U CN 214616370U CN 202120187619 U CN202120187619 U CN 202120187619U CN 214616370 U CN214616370 U CN 214616370U
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Abstract
The utility model discloses a sweep hole drill bit for drilling of minor diameter deep well, include the drill bit body and sweep the hole tool bit, sweep the lower extreme that the hole tool bit is fixed in the drill bit body, the axis of sweeping the hole tool bit is not less than 53 with the contained angle of horizontal direction. Compared with the prior art, the utility model discloses sweep that the hole is rectified effectual, the security is high.
Description
Technical Field
The utility model relates to a probing engineering machinery technical field especially relates to a sweep hole drill bit for drilling of minor diameter deep well.
Background
The mechanical drilling method for constructing small-diameter deep wells is to drill holes by using a deep well drilling machine positive circulation process. When hard foundation layers are encountered in the pore-forming process, pore-forming deflection is easy to occur, if the pore-forming deflection is not processed in time, the pore-forming deflection degree can not meet the design requirement, and the pore-forming failure can be caused in serious cases. The common practice is to lift the drill bit to above the deflection section and then to sweep the hole up and down repeatedly to correct the deviation. At present, in the process of hole sweeping by adopting a drill bit, slipping is easy to occur after drill teeth contact with a basal rock surface, the hole sweeping deviation rectifying effect is poor, and the working efficiency is low; even the drill bit or the drill rod can be broken, and the safety of construction is affected. Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a hole-sweeping drill bit with good hole-sweeping deviation-correcting effect and high safety.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sweep hole drill bit for drilling of minor diameter deep well aims at solving current drill bit and sweeps the hole in-process of rectifying deviation and sweep the hole and rectify the technical problem that the effect is poor, the security is poor.
In order to achieve the above object, the utility model provides a following scheme:
the utility model discloses a sweep hole drill bit for drilling of minor diameter deep well, include the drill bit body and sweep the hole tool bit, it is fixed in to sweep the hole tool bit the lower extreme of drill bit body, the axis of sweeping the hole tool bit is not less than 53 with the contained angle of horizontal direction.
Preferably, the drill bit body is including drilling tool connecting piece, blade disc and the tool bit base of from top to bottom fixed connection in proper order, the drilling tool connecting piece is the tube-shape, the drilling tool connecting piece the blade disc with the tool bit base is coaxial, the center of blade disc is equipped with first through-hole, the center of tool bit base is equipped with the second through-hole, and is a plurality of sweep the hole tool bit and follow tool bit base's circumference is evenly arranged.
Preferably, still include first backup pad and second backup pad, first backup pad is right triangle, two right-angle sides of first backup pad respectively with the outer wall of drilling tool connecting piece with the last fixed surface of blade disc is connected, the both ends of second backup pad respectively with the lower surface of blade disc with tool bit base fixed connection.
Preferably, the hole sweeping cutter head is a roller cone bit.
Preferably, the upper end of the tool connection piece has an external thread for connection with a drill rod.
Preferably, the hole sweeping cutter heads are four in number.
Preferably, the number of the first supporting plates is four, and the first supporting plates are circumferentially and uniformly arranged by taking the axis of the cutter head as a center.
Preferably, the material of the drill bit body is steel.
The utility model discloses for prior art gain following technological effect:
the utility model provides a sweep hole drill bit for drilling of minor diameter deep well, include the drill bit body and sweep the hole tool bit, sweep the lower extreme that the hole tool bit is fixed in the drill bit body, the axis of sweeping the hole tool bit is not less than 53 with the contained angle of horizontal direction. When the drill bit is placed to the position above the inclined position of the drilled hole, the high-speed rotary hole sweeping drill bit is used for correcting and sweeping the hole to drill, the included angle between the axis of the hole sweeping drill bit and the horizontal direction is not less than 53 degrees, the contact area of the hole sweeping cutter head to the inclined hole wall is large enough, and the hole sweeping correction effect is good. The drill jamming phenomenon is not easy to occur when the hole sweeping and deviation rectifying operation is carried out, and the safety of the device is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a hole-sweeping drill bit for drilling a small-diameter deep well according to the present embodiment;
FIG. 2 is a bottom view of the hole sweeping drill bit for drilling a small diameter deep well according to the present embodiment;
wherein: 1-hole sweeping cutter head; 2-a tool bit base; 3-cutter head; 4-a first support plate; 5-drilling tool connections; 6-a first via; 7-a second via; 8-second support plate.
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 efforts belong to the protection scope of the present invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-2, the present embodiment provides a hole sweeping drill for drilling a small-diameter deep well, which includes a drill body and a hole sweeping cutter head 1, wherein the hole sweeping cutter head 1 is fixed at a lower end of the drill body, and an included angle between an axis of the hole sweeping cutter head 1 and a horizontal direction is not less than 53 °.
In the embodiment, when the small-diameter deep well is drilled with hole deviation, the drill bit body is connected with drilling tools such as a drill rod or a drill collar and the like and placed in an inclined hole with deviation rectification, the drilling machine is started, a slurry pump is started, and the hole-sweeping drill bit is controlled to be slowly lowered to conduct hole-sweeping operation. When the drill bit is lowered to a position about 20m above the position where the drill hole begins to incline, the hole-sweeping drill bit is rotated at a high speed to carry out deviation-correcting hole-sweeping drilling operation. The included angle between the axis of the hole sweeping drill bit and the horizontal direction is not less than 53 degrees, so that the contact area of the hole sweeping cutter head 1 to the inclined hole wall is large enough, and the hole sweeping deviation rectifying effect is good. The drill jamming phenomenon is not easy to occur when the hole sweeping and deviation rectifying operation is carried out, and the safety of the device is ensured.
The form of the bit body is numerous and can be selected by one skilled in the art as desired. In this embodiment, the drill body includes drilling tool connecting piece 5, blade disc 3 and tool bit base 2 from top to bottom fixed connection in proper order, and drilling tool connecting piece 5 is the tube-shape, and drilling tool connecting piece 5, blade disc 3 are coaxial with tool bit base 2, and the center of blade disc 3 is equipped with first through-hole 6, and the center of tool bit base 2 is equipped with second through-hole 7, and a plurality of hole-sweeping tool bits 1 evenly arrange along tool bit base 2's circumference. Further, the hole sweeping cutter head 1 is a roller bit. In the embodiment, the drill turntable drives the hole sweeping drill bit to rotate at a high speed, the roller bit on the hole sweeping cutter head 1 rotates while revolving, the drill pressure is applied to the hole sweeping drill bit through the steel wire rope of the lower main winch, and the hard alloy on the roller bit cuts and crushes rock. Mud or circulating liquid pressed by the mud pump sequentially passes through the first through hole 6 and the second through hole 7 and then is sprayed out, rock debris attached to the roller bit can be washed in time, and the hole sweeping and correcting effect is guaranteed.
In order to improve drilling tool connecting piece 5 and blade disc 3 joint strength, and blade disc 3 and tool bit base 2's joint strength, with the security of guaranteeing the device, this embodiment still includes first backup pad 4 and second backup pad 8, first backup pad 4 is right triangle, two right-angle sides of first backup pad 4 are connected with the outer wall of drilling tool connecting piece 5 and the last fixed surface of blade disc 3 respectively, the both ends of second backup pad 8 respectively with the lower surface of blade disc 3 and 2 fixed connection of tool bit base. Further, the number of the first supporting plates 4 is four, and the first supporting plates are circumferentially and uniformly arranged by taking the axis of the cutter head 3 as a center, so that the strength of the device is further improved.
The connection of the drill tool coupling 5 to a drill tool device such as a drill rod may be of various types and may be selected by the person skilled in the art as required. In this embodiment the upper end of the tool coupling 5 has an external thread for connection to a drill rod.
In order to further improve the effect of correcting the deviation of the hole sweeping positions, in the present embodiment, the number of the hole sweeping cutter heads 1 is preferably four.
In the present embodiment, the size of the cutter head 3 is preferably 406mm in diameter and 50mm in thickness. The first through-hole 6 and the second through-hole 7 preferably have a hole diameter of 75 mm. The connection between the cutter head 3 and the drill connecting piece 5 is preferably welded. The dimensions of the drill connection element 5 are preferably 229mm in outer diameter, 12mm in wall thickness and 550mm in height. The thickness of the first support plate 4 and the second support plate 8 is preferably 30mm, and the first support plate 4 and the second support plate 8 are preferably welded with the cutter head 3.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. A hole sweeping drill bit for drilling a small-diameter deep well is characterized by comprising a drill bit body and a hole sweeping cutter head, wherein the hole sweeping cutter head is fixed at the lower end of the drill bit body, and the included angle between the axis of the hole sweeping cutter head and the horizontal direction is not less than 53 degrees; the drill bit body comprises a drilling tool connecting piece, a cutter disc and a cutter head base which are sequentially and fixedly connected from top to bottom, the drilling tool connecting piece is cylindrical, the drilling tool connecting piece, the cutter disc and the cutter head base are coaxial, a first through hole is formed in the center of the cutter disc, a second through hole is formed in the center of the cutter head base, and a plurality of hole sweeping cutter heads are uniformly arranged along the circumferential direction of the cutter head base; the hole sweeping cutter head is a roller bit.
2. The hole sweeping drill bit for drilling the small-diameter deep well according to claim 1, further comprising a first supporting plate and a second supporting plate, wherein the first supporting plate is a right triangle, two right-angle sides of the first supporting plate are fixedly connected with the outer wall of the drilling tool connecting piece and the upper surface of the cutter head respectively, and two ends of the second supporting plate are fixedly connected with the lower surface of the cutter head and the cutter head base respectively.
3. A spot drill for drilling a small-diameter deep well according to claim 1, wherein the upper end of the tool connection member has an external thread for connection with a drill rod.
4. The spot drill for drilling a small-diameter deep well according to claim 1, wherein the number of the spot cutters is four.
5. The hole-sweeping drill bit for drilling a small-diameter deep well according to claim 2, wherein the number of the first supporting plates is four and the first supporting plates are circumferentially and uniformly arranged with the axis of the cutter head as a center.
6. The hole sweeping drill bit for drilling the small-diameter deep well according to claim 1, wherein the material of the drill bit body is steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120187619.3U CN214616370U (en) | 2021-01-25 | 2021-01-25 | Hole sweeping drill bit for drilling small-diameter deep well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120187619.3U CN214616370U (en) | 2021-01-25 | 2021-01-25 | Hole sweeping drill bit for drilling small-diameter deep well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214616370U true CN214616370U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120187619.3U Active CN214616370U (en) | 2021-01-25 | 2021-01-25 | Hole sweeping drill bit for drilling small-diameter deep well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214616370U (en) |
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2021
- 2021-01-25 CN CN202120187619.3U patent/CN214616370U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 050000 No. 555 Huai'an West Road, Shijiazhuang City, Hebei Province Patentee after: China Hebei Jiankan Group Co.,Ltd. Address before: 050227 No. 555, Huaian West Road, Shijiazhuang City, Hebei Province Patentee before: HEBEI CONSTRUCTION AND INVESTIGATION RESEARCH INSTITUTE Co.,Ltd. |