CN216950262U - Hollow drill rod for oil exploitation - Google Patents
Hollow drill rod for oil exploitation Download PDFInfo
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- CN216950262U CN216950262U CN202123119144.3U CN202123119144U CN216950262U CN 216950262 U CN216950262 U CN 216950262U CN 202123119144 U CN202123119144 U CN 202123119144U CN 216950262 U CN216950262 U CN 216950262U
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Abstract
The utility model discloses a hollow drill rod for oil exploitation, which comprises a drill rod body, a through hole, a first thread connecting column, a drill blade sleeve and a second thread connecting column, wherein the through hole is formed in the drill rod body, the drill blade sleeve is fixed on the outer wall of the drill rod body, drill blade parts with equal intervals are arranged on the surface of the drill blade sleeve, drill blade bars with equal intervals are arranged on the surface of each drill blade part, an inclined blade surface is arranged on the surface of each drill blade bar, a wear-resistant coating is coated on the surface of the inclined blade surface, the first thread connecting column is fixed at the top end of the drill rod body, a connecting part is fixed at the bottom end of the drill rod body, and the second thread connecting column is fixed at the bottom end of the connecting part. The drill rod structure not only reduces the abrasion and fracture of the drill rod, enables the drill bit to be more firmly and reliably installed and not to be loosened easily, but also improves the wear resistance and corrosion resistance of the drill rod and is more durable.
Description
Technical Field
The utility model relates to the technical field of oil exploitation, in particular to a hollow drill rod for oil exploitation.
Background
An oil drill rod is an important position in oil exploitation, the drill rod is a steel pipe with screw threads at the tail part and is used for connecting surface equipment of a drilling machine and drilling and grinding equipment or a bottom hole device at the bottom end of a drilled well, and the drill rod is used for conveying drilling mud to a drill bit and improving, lowering or rotating the bottom hole device together with the drill bit.
The hollow drill rods on the market are various in types, can basically meet the use requirements of operators, and still have certain defects. When the existing hollow drill rod is used for deep drilling, because the underground soil layer is gradually changed hard, the resistance of the drill rod is increased, the abrasion is serious and even the drill rod is broken, so that the working efficiency is seriously influenced, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hollow drill rod for oil exploitation, which aims to solve the problem that the resistance applied to the hollow drill rod during downward drilling is easy to cause serious abrasion and even fracture in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a hollow drill rod for oil development, includes drilling rod body, through-hole, first screw thread spliced pole, bores the sword cover and second screw thread spliced pole, the through-hole sets up the inside at the drilling rod body, bore the sword cover and fix on the outer wall of drilling rod body, just the surface of boring the sword cover all is provided with equidistant drill blade portion, the surface of drill blade portion all is provided with equidistant drill blade strip, just the surface of drill blade strip is provided with the inclined cutting face, and the surface coating of inclined cutting face has wear-resistant coating, the top at the drilling rod body is fixed to first screw thread spliced pole, the bottom mounting of drilling rod body has connecting portion, the bottom at connecting portion is fixed to second screw thread spliced pole.
Preferably, the outer walls of the drill rod body and the drill bit sleeve are coated with a strengthening coating, and the strengthening coating can be a chromium carbide coating which has the characteristics of high hardness and high wear resistance, so that the drill rod is firmer and more wear-resistant.
Preferably, the chip grooves are formed in the outer wall of the drill blade sleeve between the drill blade parts, so that chips generated in the drilling process are conveniently discharged, and the occurrence of the blocking condition in the drilling process is effectively avoided.
Preferably, the corner positions of the bottom ends of the connecting parts are provided with positioning holes, and the inner walls of the positioning holes are provided with inner thread grooves, so that the drill bit is more firmly and reliably mounted and is not easy to loosen.
Preferably, the surface of the reinforcing coating is coated with a corrosion-resistant layer, and the corrosion-resistant layer can be a polyphenolic epoxy coating which has good corrosion resistance, chemical resistance and wear resistance.
Preferably, the surface of the corrosion-resistant layer is uniformly sprayed with an antirust coating, and the antirust coating can be antirust paint and can prevent the drill rod from rusting.
Compared with the prior art, the utility model has the beneficial effects that: the hollow drill rod for oil exploitation not only reduces the abrasion and fracture of the drill rod, so that the drill bit is more firmly and reliably mounted and is not easy to loosen, but also improves the wear resistance and corrosion resistance of the drill rod and is more durable;
(1) the drill bit sleeve is fixed on the outer wall of the drill rod body, the drill bit strip on the surface of the drill bit part is in contact with an underground soil layer during downward drilling, and scraps generated in the drilling process can be quickly discharged from the chip discharge groove, so that the occurrence of blockage during drilling is effectively avoided, the inclined blade surface on the surface of the drill bit strip is designed in an inclined manner, the resistance of the drill rod during drilling can be reduced, and the wear-resistant coating coated on the surface of the inclined blade surface enables the drill bit strip to be firmer and more wear-resistant, so that the conditions of serious wear and even breakage of the drill rod are reduced;
(2) by arranging the connecting part, the second threaded connecting column, the positioning hole and the internal thread groove, the connecting part is fixed at the bottom end of the drill rod body, the second threaded connecting column is fixed at the bottom end of the connecting part and is of a conical structure, threads on the surface of the second threaded connecting column are used for connecting a drill bit, when the drill bit is completely screwed outside the second threaded connecting column, the mounting hole on the surface of the drill bit is coincided with the positioning hole, and a bolt penetrates through the mounting hole and is screwed into the positioning hole to be connected with the internal thread groove, so that the drill bit is more firmly and reliably mounted and is not easy to loosen;
(3) through being provided with reinforced coating, the corrosion resistant coating, anti rust coating, because all the coating has reinforced coating on the outer wall of drilling rod body and drill bit cover, reinforced coating can be chromium carbide coating, chromium carbide coating has high hardness, high wear resistant characteristic, make the drilling rod more sturdy and wear resistant, reinforced coating surface's corrosion resistant coating can be polyphenolic epoxy coating, polyphenolic epoxy coating has fine anticorrosive ability, chemical resistance and wearability, the anti rust coating on corrosion resistant layer surface can be anti-corrosive paint, can prevent that the drilling rod from rustting, thereby the wear-resisting and corrosion resisting property of drilling rod has been promoted, and is more durable.
Drawings
FIG. 1 is a schematic structural view of a hollow drill rod for oil extraction in a front view;
FIG. 2 is a schematic top view of a drill bit sleeve of the hollow drill rod for oil production according to the present invention;
FIG. 3 is a schematic view of a partially cross-sectional structure of a hollow drill rod for oil exploitation according to the present invention;
FIG. 4 is a schematic view of a cross-sectional structure of a side wall of a drill rod body of the hollow drill rod for oil production according to the present invention.
In the figure: 1. a drill rod body; 2. a through hole; 3. a first threaded connection post; 4. drilling a blade sleeve; 5. drilling a blade part; 6. drilling a blade strip; 7. a chip groove; 8. a connecting portion; 9. a second threaded connecting post; 10. a wear-resistant coating; 11. a beveled edge face; 12. positioning holes; 13. an internal thread groove; 14. reinforcing the coating; 15. a corrosion resistant layer; 16. and (4) antirust coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention is shown: a hollow drill rod for oil exploitation comprises a drill rod body 1, a through hole 2, a first threaded connecting column 3, a drill blade sleeve 4 and a second threaded connecting column 9, wherein the through hole 2 is formed in the drill rod body 1;
the drill blade sleeve 4 is fixed on the outer wall of the drill rod body 1, and drill blade parts 5 with equal intervals are arranged on the surface of the drill blade sleeve 4;
the chip discharge groove 7 is formed in the outer wall of the drill edge sleeve 4 between the drill edge parts 5, so that chips generated in the drilling process can be discharged conveniently, and the occurrence of blocking during drilling is effectively avoided;
the surfaces of the drill edges 5 are all provided with drill edge strips 6 at equal intervals, the surfaces of the drill edge strips 6 are provided with inclined edge surfaces 11, and the surfaces of the inclined edge surfaces 11 are coated with wear-resistant coatings 10;
the outer walls of the drill rod body 1 and the drill blade sleeve 4 are coated with the reinforced coating 14, and the reinforced coating 14 can be a chromium carbide coating which has the characteristics of high hardness and high wear resistance, so that the drill rod is firmer and more wear resistant;
the surface of the reinforced coating 14 is coated with the corrosion-resistant layer 15, and the corrosion-resistant layer 15 can be a polyphenolic epoxy coating which has good corrosion resistance, chemical resistance and wear resistance;
the surface of the corrosion-resistant layer 15 is uniformly sprayed with an antirust coating 16, and the antirust coating 16 can be antirust paint which can prevent a drill rod from rusting;
the first threaded connecting column 3 is fixed at the top end of the drill rod body 1;
a connecting part 8 is fixed at the bottom end of the drill rod body 1, and a second threaded connecting column 9 is fixed at the bottom end of the connecting part 8;
the corner position department of 8 bottoms of connecting portion all is provided with locating hole 12, and is provided with internal thread groove 13 on the inner wall of locating hole 12 for the installation of drill bit is more firm reliable, and is difficult not hard up.
When the embodiment of the application is used: firstly, because the bottom end of the drill rod body 1 is fixed with the connecting part 8, the second thread connecting column 9 is fixed at the bottom end of the connecting part 8, the second thread connecting column 9 is in a conical structure, threads on the surface of the second thread connecting column are used for connecting a drill bit, when the drill bit is completely screwed and sleeved outside the second thread connecting column 9, a mounting hole on the surface of the drill bit is superposed with the positioning hole 12, a bolt passes through the mounting hole and is screwed into the inner part of the positioning hole 12 to be connected with the internal thread groove 13, so that the drill bit is more firmly and reliably mounted and is not easy to loosen, then, because the drill blade sleeve 4 is fixed on the outer wall of the drill rod body 1, when drilling, the drill blade 6 on the surface of the drill blade part 5 is contacted with an underground soil layer, fragments generated in the drilling process can be rapidly discharged from the discharge groove 7, the occurrence of the blockage situation during drilling is effectively avoided, because the inclined blade surface 11 on the surface of the drill blade 6 is designed in an inclined way, the resistance of the drill rod during drilling can be reduced, the wear-resistant coating 10 coated on the surface of the inclined cutting surface 11 enables the drill cutting edge strip 6 to be firmer and more wear-resistant, so that the conditions of serious wear and even breakage of the drill rod are reduced, in addition, the reinforcing coating 14 is coated on the outer walls of the drill rod body 1 and the drill cutting edge sleeve 4, the reinforcing coating 14 can be a chromium carbide coating, the chromium carbide coating has the characteristics of high hardness and high wear resistance, so that the drill rod is firmer and more wear-resistant, the corrosion-resistant layer 15 on the surface of the reinforcing coating 14 can be a polyphenolic epoxy coating, the polyphenolic epoxy coating has good corrosion resistance, chemical resistance and wear resistance, the antirust coating 16 on the surface of the corrosion-resistant layer 15 can be antirust paint, the drill rod can be prevented from rusting, the wear resistance and corrosion resistance of the drill rod are improved, the drill rod is more durable, and the work of the hollow drill rod for oil exploitation is completed.
Claims (6)
1. A hollow drill rod for oil exploitation is characterized by comprising a drill rod body (1), a through hole (2), a first threaded connecting column (3), a drill blade sleeve (4) and a second threaded connecting column (9), the through hole (2) is arranged inside the drill rod body (1), the drill blade sleeve (4) is fixed on the outer wall of the drill rod body (1), and the surfaces of the drill bit sleeves (4) are all provided with drill bit parts (5) with equal intervals, drill blade strips (6) with equal intervals are arranged on the surfaces of the drill blade parts (5), inclined blade surfaces (11) are arranged on the surfaces of the drill blade strips (6), the surface of the inclined cutting surface (11) is coated with a wear-resistant coating (10), the first threaded connecting column (3) is fixed at the top end of the drill rod body (1), the bottom end of the drill rod body (1) is fixed with a connecting portion (8), and the second threaded connecting column (9) is fixed at the bottom end of the connecting portion (8).
2. The hollow drill rod for oil extraction according to claim 1, characterized in that: the outer walls of the drill rod body (1) and the drill bit sleeve (4) are coated with a strengthening coating (14), and the strengthening coating (14) can be a chromium carbide coating.
3. The hollow drill rod for oil extraction according to claim 1, characterized in that: and a chip groove (7) is formed in the outer wall of the drill bit sleeve (4) between the drill bit parts (5).
4. The hollow drill rod for oil extraction according to claim 1, characterized in that: the corner positions of the bottom end of the connecting part (8) are provided with positioning holes (12), and the inner wall of each positioning hole (12) is provided with an inner thread groove (13).
5. The hollow drill rod for oil exploitation as claimed in claim 2, wherein: the surface of the reinforcement coating (14) is coated with a corrosion-resistant layer (15), and the corrosion-resistant layer (15) may be a polyphenolic epoxy coating.
6. The hollow drill rod for oil exploitation as set forth in claim 5, wherein: the surface of the corrosion-resistant layer (15) is uniformly sprayed with an antirust coating (16), and the antirust coating (16) can be antirust paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123119144.3U CN216950262U (en) | 2021-12-13 | 2021-12-13 | Hollow drill rod for oil exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123119144.3U CN216950262U (en) | 2021-12-13 | 2021-12-13 | Hollow drill rod for oil exploitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216950262U true CN216950262U (en) | 2022-07-12 |
Family
ID=82306606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123119144.3U Active CN216950262U (en) | 2021-12-13 | 2021-12-13 | Hollow drill rod for oil exploitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216950262U (en) |
-
2021
- 2021-12-13 CN CN202123119144.3U patent/CN216950262U/en active Active
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