CN112443282A - Composite spiral drill rod - Google Patents
Composite spiral drill rod Download PDFInfo
- Publication number
- CN112443282A CN112443282A CN202011330200.5A CN202011330200A CN112443282A CN 112443282 A CN112443282 A CN 112443282A CN 202011330200 A CN202011330200 A CN 202011330200A CN 112443282 A CN112443282 A CN 112443282A
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- CN
- China
- Prior art keywords
- blade
- rod
- spiral
- section
- wide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 22
- 239000002893 slag Substances 0.000 abstract description 21
- 239000003245 coal Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
Abstract
The invention discloses a composite spiral drill rod, which comprises a rod body, a male joint and a female joint, wherein the male joint and the female joint are connected to two ends of the rod body; the wide-blade spiral rod section has good structural strength, is suitable for being clamped by hydraulic clamping devices such as a drill chuck, a clamp holder and the like, and is beneficial to connecting and disconnecting drill rods; the high-blade spiral rod section has good slag discharging performance, and a plurality of spiral spaces are formed between the spiral channel of the drill rod and the wall of a drilled hole in the drilling process, so that the channel of the coal slag is enlarged, and the coal slag is discharged more smoothly; the integral slag discharge performance of the drill rod is improved; and the structure also realizes lightweight design through the arrangement of the high-blade spiral section, so that the material consumption of the drill rod can be reduced, and the cost of the drill rod is reduced.
Description
Technical Field
The invention relates to the technical field of coal mine drilling machines, in particular to a combined spiral drill rod.
Background
The drill rod is a common drilling tool for drilling water exploration and drainage holes and gas drainage holes in the underground, is used for transmitting torque in the drilling process, and continuously deepens the hole by lengthening the drill rod. In the drilling process of soft and broken soft coal seams, a general cylindrical drill rod with a smooth outer surface has a narrow slag discharge channel and a poor slag discharge effect, so that various spiral drill rods are produced. The existing auger stem is generally divided into a high-blade auger stem and a wide-blade auger stem, wherein the high-blade auger stem is formed by spirally winding high and thin blades on the outer surface of a drill stem body, and a larger spiral slag discharge channel is formed between the high blades and a core rod, so that the slag discharge effect is better improved. However, the blade is high and thin, and has weak radial strength, so that the blade cannot be applied to a hydraulic chuck clamping device of a hydraulic drilling machine, and tools such as pipe tongs, simple clamps and the like are generally manually adopted for assistance in connection and disconnection. In addition, the high blade is generally connected with the core rod by adopting a girdling welding process, and a welding seam becomes a weak link and is easy to damage. The wide-blade auger stem aims at improving the defects that the strength of the blades of the high-blade auger stem is weak and the high-blade auger stem cannot be applied to a hydraulic clamping device, and the blades are thickened and reduced in height to form the wide-blade auger stem. Although the clamping performance of the wide-blade auger stem is improved, the blades still adopt a circumferential welding process, and the welding seam is still a weak link. And because the height of the blade is reduced, the whole spiral groove is shallow, and the slag discharging effect is not as good as that of a high-blade drill rod.
The composite spiral drill rod is suitable for a hydraulic clamping device of a drilling machine, and the structural strength and the slag discharge performance of the drill rod are improved.
Disclosure of Invention
In view of the above, the present invention provides a composite auger stem which is suitable for a hydraulic clamping device of a drilling machine and has improved structural strength and slag discharge performance.
The composite spiral drill rod comprises a rod body, a male joint and a female joint, wherein the male joint and the female joint are connected to two ends of the rod body, the rod body comprises a high-blade spiral rod section and two wide-blade spiral rod sections connected to two axial ends of the high-blade spiral rod section, and a spiral groove of the high-blade spiral rod section is communicated with a spiral groove of the wide-blade spiral rod section.
Furthermore, a channel which is axially communicated is arranged among the male joint, the rod body and the female joint.
Further, the thickness of the blade of the wide-blade spiral rod section is 2-4 times of that of the high-blade spiral rod section.
Furthermore, the female joint is a threaded hole arranged at the free end of one of the wide-blade spiral rod sections.
Further, the groove depth of the high-blade spiral rod section is 2-5 times of the groove depth of the wide-blade spiral rod section.
Further, the groove width of the high-blade screw rod section is 2-4 times of the groove width of the wide-blade screw rod section.
Furthermore, the high-blade spiral rod section and the wide-blade spiral rod section are connected by friction welding.
Further, the spiral groove at the butt joint of the high-blade spiral rod section and the wide-blade spiral rod section and the blades are in smooth transition connection.
Further, the spiral grooves of the high-blade spiral rod section and the wide-blade spiral rod section are processed in a spiral milling mode.
Further, the male connector is a screw connected to the free end of the other wide-blade screw section.
The invention has the beneficial effects that:
the blades and the spiral grooves of the wide-blade spiral rod section are uniformly distributed, the blades are large in thickness and low in height, and have good structural strength, so that the wide-blade spiral rod section is suitable for being clamped by hydraulic clamping devices such as a drill chuck and a clamp holder, and is beneficial to connecting and disconnecting drill rods; the high-blade spiral rod section has larger groove depth and groove width, has good slag discharge performance, and forms a plurality of spiral spaces between the spiral channel of the drill rod and the wall of a drill hole in the drilling process, so that the channel of the coal slag is enlarged, and the coal slag is discharged more smoothly; the integral slag discharge performance of the drill rod is improved; and the drilling rod of this structure has still realized the lightweight through the setting of high blade spiral section under the prerequisite of having compromise sediment ability and hydraulic clamping function, and the material of reducible drilling rod reduces the cost of drilling rod.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic view of a drill pipe configuration;
Detailed Description
Combine fig. 1 to show, provide a combined type auger stem in this embodiment, including the body of rod and connect in the male joint 1 and the female joint 2 at body of rod both ends, the body of rod includes high blade auger stem section 3 and connects in two sections wide blade auger stem sections 4 at high blade auger stem section axial both ends, the helicla flute of high blade auger stem section 3 and the helicla flute intercommunication of wide blade auger stem section 4. As shown in fig. 1, the high-blade screw rod section and the wide-blade screw rod section are coaxially arranged, and after the high-blade screw rod section and the wide-blade screw rod section are connected, a continuous thread groove is formed on the whole rod body, wherein the lead angles of the joints of the high-blade screw rod section and the wide-blade screw rod section are consistent, preferably, the lead angles of the high-blade screw rod section and the wide-blade screw rod section are fixed and identical, and the blades and the spiral channels on the whole drill rod are continuous, so that the smoothness and the smoothness of a slag discharge channel can be ensured; the male connector and the female connector can adopt known structures, and are not described in detail; the blades and the spiral grooves of the wide-blade spiral rod section are uniformly distributed, the blades are large in thickness and low in height, the wide-blade spiral rod section has good structural strength, and is suitable for being clamped on the excircle of a drill rod blade by hydraulic clamping devices such as a drill chuck and a clamp holder, the connection and disconnection of a drill rod are facilitated, and the total length of the wide-blade spiral rod section is matched with the clamping width of the clamping device; the high-blade spiral rod section has larger groove depth and groove width, has good slag discharge performance, and forms a plurality of spiral spaces between the spiral channel of the drill rod and the wall of a drill hole in the drilling process, so that the channel of the coal slag is enlarged, and the coal slag is discharged more smoothly; the integral slag discharge performance of the drill rod is improved; and the drilling rod of this structure has still realized the lightweight through the setting of high blade spiral section under the prerequisite of having compromise sediment ability and hydraulic clamping function, and the material of reducible drilling rod reduces the cost of drilling rod.
In this embodiment, the male joint, the rod body and the female joint are provided with an axially communicating channel therebetween. The three sections of the rod bodies of the combined spiral drill rod are all made of integral thick-wall pipes, so that channels penetrating through the two axial ends of the drill rod are naturally formed in the drill rod, and the channels are used for circulating pressure water or compressed air for deslagging and cooling a drill bit.
In this embodiment, the thickness of the blade of the wide-blade screw rod section is 2 to 4 times that of the blade of the high-blade screw rod section. The blade thickness of this proportion can make structural strength and the hydraulic pressure clamping capacity of wide blade screw rod section and the screw channel size of high blade screw rod section synthesize and reach the balance, and the blade thickness of preferred wide blade screw rod section is 3 times of high blade screw rod section blade thickness in this embodiment, but both guaranteed that the drilling rod passes through the grippability of hydraulic chuck, holder, has also guaranteed the row's sediment ability of drilling rod.
In this embodiment, the groove depth of the high-blade screw rod section is 2 to 5 times of the groove depth of the wide-blade screw rod section. The groove width of the high-blade screw rod section is 2-4 times of that of the wide-blade screw rod section. The strength of the high-blade spiral rod blade and the spiral channel of the spiral channel and the wide-blade spiral rod section are balanced by limiting the groove depth and the groove width, in the embodiment, the groove depth of the high-blade spiral rod section is preferably 2.5 times of the groove depth of the wide-blade spiral rod section, the groove width of the high-blade spiral rod section is preferably 3 times of the groove width of the wide-blade spiral rod section, and the blade thickness, the groove depth and the groove width of the wide-blade spiral rod section are respectively 25mm, 6mm and 25mm by taking a drill rod with an external diameter of 73mm as an example; the blade thickness, the groove depth and the groove width of the high-blade spiral rod section are respectively 8mm, 15mm and 72 mm.
In this embodiment, the high-blade helical rod section 3 and the wide-blade helical rod section 4 are connected by friction welding. The welding quality between sections of screw rods is improved through friction welding, the torsional rigidity of the drill rod is improved, and the rejection rate of welding is reduced.
In this embodiment, the spiral groove and the blade at the butt joint of the high-blade spiral rod section 3 and the wide-blade spiral rod section 4 are in smooth transition connection. Smooth transition between the spiral groove walls at the butt joint part is ensured, and the spiral groove walls at the joint part of the high-blade spiral rod section 3 and the wide-blade spiral rod section 4 can be properly deformed to realize circular arc smooth transition connection, so that a spiral channel of the drill rod is continuous, and smoothness of a slag discharge channel are ensured.
In this embodiment, the spiral grooves of the high-blade spiral rod section 3 and the wide-blade spiral rod section 4 are processed in a spiral milling manner. High blade screw rod section 3 adopts the whole milling process of thick wall steel pipe with wide blade screw rod section 4 for blade integrated into one piece compares with the boxing of blade on the body of rod, and the processing degree of difficulty is low, and blade joint strength is high.
In this embodiment, the female joint is a threaded hole provided at the free end of one of the wide-blade helical rod sections 4. As shown in fig. 1, the end of the wide-bladed screw rod segment at the left position in fig. 1 has a threaded hole to form a female joint, which occupies a small space and facilitates the axial seamless butt joint between the drill rods.
In this embodiment, the male connector is a threaded rod connected to the free end of another wide blade helical rod section 4. Wherein the screw rod is the hollow structure with the drilling rod passageway intercommunication, and screw rod integrated into one piece processes in wide blade spiral rod section one end, and two adjacent drilling rods pass through male joint and female joint end to end connection, do benefit to the connection and the breaking out of drilling rod.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. A combined type auger stem, its characterized in that: including the body of rod and connect in the male joint and the female joint at body of rod both ends, the body of rod includes high blade hob section and connects in two sections wide blade hob sections at high blade hob section axial both ends, the helicla flute of high blade hob section and the helicla flute intercommunication of wide blade hob section.
2. The composite auger rod of claim 1, wherein: and a channel which is axially communicated is arranged among the male joint, the rod body and the female joint.
3. The composite auger rod of claim 1, wherein: the thickness of the blade of the wide-blade spiral rod section is 2-4 times of that of the blade of the high-blade spiral rod section.
4. The composite auger rod of claim 1, wherein: the female joint is a threaded hole formed in the free end of one of the wide-blade spiral rod sections.
5. The composite auger rod of claim 1 or 3, wherein: the groove depth of the high-blade screw rod section is 2-5 times of that of the wide-blade screw rod section.
6. The composite auger rod of claim 1 or 3, wherein: the groove width of the high-blade screw rod section is 2-4 times of that of the wide-blade screw rod section.
7. The composite auger rod of claim 1, wherein: the high-blade spiral rod section and the wide-blade spiral rod section are connected by friction welding.
8. The composite auger rod of claim 1, wherein: the spiral groove at the butt joint of the high-blade spiral rod section and the wide-blade spiral rod section is in smooth transition connection with the blades.
9. The composite auger rod of claim 1, wherein: the spiral grooves of the high-blade spiral rod section and the wide-blade spiral rod section are processed in a spiral milling mode.
10. The composite auger rod of claim 4, wherein: the male connector is a screw connected to the free end of the other wide-blade screw section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330200.5A CN112443282A (en) | 2020-11-24 | 2020-11-24 | Composite spiral drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011330200.5A CN112443282A (en) | 2020-11-24 | 2020-11-24 | Composite spiral drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112443282A true CN112443282A (en) | 2021-03-05 |
Family
ID=74737999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011330200.5A Pending CN112443282A (en) | 2020-11-24 | 2020-11-24 | Composite spiral drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112443282A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071886A (en) * | 2011-01-13 | 2011-05-25 | 河南理工大学 | Drill rod of double helix anti-lock drill |
| CN201851040U (en) * | 2010-10-19 | 2011-06-01 | 煤炭科学研究总院重庆研究院 | Spiral drill rod for complex stratum |
| CN102305034A (en) * | 2011-08-24 | 2012-01-04 | 成都科盛石油科技有限公司 | Drilling tool for shallow-layer soil texture |
| CN203201498U (en) * | 2013-01-24 | 2013-09-18 | 贺德新 | Soil compacting and discharging drilling rod, spiral drill and pile machine |
| CN104563886A (en) * | 2015-01-14 | 2015-04-29 | 北京中岩大地工程技术有限公司 | Segmented bit of long spiral drilling machine |
| CN205477414U (en) * | 2016-01-29 | 2016-08-17 | 河南铁福来装备制造股份有限公司 | Double helix of nai pressurization threaded connection formula drilling rod |
| CN106761451A (en) * | 2017-01-25 | 2017-05-31 | 河南理工大学 | Complex geological condition coal rock layer creeps into bionical flow liner drop resistance drilling rod and drilling method |
| CN110374524A (en) * | 2019-08-21 | 2019-10-25 | 胜利油田高原石油装备有限责任公司 | A kind of tool joint that torsional strength is high |
-
2020
- 2020-11-24 CN CN202011330200.5A patent/CN112443282A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201851040U (en) * | 2010-10-19 | 2011-06-01 | 煤炭科学研究总院重庆研究院 | Spiral drill rod for complex stratum |
| CN102071886A (en) * | 2011-01-13 | 2011-05-25 | 河南理工大学 | Drill rod of double helix anti-lock drill |
| CN102305034A (en) * | 2011-08-24 | 2012-01-04 | 成都科盛石油科技有限公司 | Drilling tool for shallow-layer soil texture |
| CN203201498U (en) * | 2013-01-24 | 2013-09-18 | 贺德新 | Soil compacting and discharging drilling rod, spiral drill and pile machine |
| CN104563886A (en) * | 2015-01-14 | 2015-04-29 | 北京中岩大地工程技术有限公司 | Segmented bit of long spiral drilling machine |
| CN205477414U (en) * | 2016-01-29 | 2016-08-17 | 河南铁福来装备制造股份有限公司 | Double helix of nai pressurization threaded connection formula drilling rod |
| CN106761451A (en) * | 2017-01-25 | 2017-05-31 | 河南理工大学 | Complex geological condition coal rock layer creeps into bionical flow liner drop resistance drilling rod and drilling method |
| CN110374524A (en) * | 2019-08-21 | 2019-10-25 | 胜利油田高原石油装备有限责任公司 | A kind of tool joint that torsional strength is high |
Non-Patent Citations (1)
| Title |
|---|
| 雷万年等: "针对防冲卸压的自动钻机优化与应用", 《煤矿机械》 * |
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Application publication date: 20210305 |
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| RJ01 | Rejection of invention patent application after publication |