CN112647866A - Quadrangular drill rod and machining method thereof - Google Patents
Quadrangular drill rod and machining method thereof Download PDFInfo
- Publication number
- CN112647866A CN112647866A CN202011561351.1A CN202011561351A CN112647866A CN 112647866 A CN112647866 A CN 112647866A CN 202011561351 A CN202011561351 A CN 202011561351A CN 112647866 A CN112647866 A CN 112647866A
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- China
- Prior art keywords
- rod body
- inclined surface
- spiral chip
- quadrangular
- drill
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Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000003754 machining Methods 0.000 title claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 13
- 239000003245 coal Substances 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 abstract description 8
- 238000003672 processing method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a quadrangular drill rod and a processing method thereof, wherein the hole forming rate and the concentricity are ensured by arranging a plurality of edges, the problem that a drill rod is abraded too fast and a drilling machine rotator is easy to damage is avoided by utilizing the edges extending in a large spiral manner, hole collapse is avoided, and the phenomena of drill sticking and drill holding of a soft coal seam are reduced; the spiral chip groove extending through the big spiral ensures rapid slag discharge by utilizing the characteristics of large pitch and continuous rotating speed of the spiral chip groove; the small bulge protruding towards the direction of the arc surface is formed by the two first inclined surfaces and the second inclined surface, so that broken slag in the spiral chip discharge groove is discharged quickly, the phenomenon of drill jamming caused by blockage of a slag discharge channel is avoided, and simultaneously, the hole wall of a drilled hole is formed well.
Description
Technical Field
The invention particularly relates to a quadrangular drill rod and a processing method thereof.
Background
With the gradual improvement of the economic level of China, the demand of the society for energy is gradually increased. The energy problem is always an important topic which is concerned by people in the development process. With the achievement and implementation of sustainable development and observation in China, the development and utilization of clean energy are highly emphasized in the development process. And the coal bed gas is used as clean energy, and plays an important role in the development of various fields. In recent years, with the increasing of coal bed gas exploration and exploitation strength in China, the drilling technical requirements for coal bed gas are higher and higher.
The drill rod is one of the indispensable tools of coal seam gas extraction drill rod, but the following problems of current drill rod ubiquitous: firstly, the drill rod is worn quickly; secondly, the slag discharging is difficult, the blocking and drill jamming conditions of the slag discharging channel often occur, the drill rod is very easy to cause the incapability of rotating, the deep hole drilling is difficult to carry out, and the working efficiency is greatly influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a quadrangular drill rod and a processing method thereof.
The technical scheme for solving the problems comprises the following steps: a quadrangular drill rod and a processing method thereof comprise a rod body provided with a circulation groove, a male joint which is welded at one end of the rod body through friction and is communicated with the rod body, and a female joint which is welded at one end of the rod body through friction, is communicated with the rod body and is matched with the male joint, wherein the female joint is positioned at one end of the rod body, which is far away from the male joint;
four spiral chip grooves annularly arrayed around the central axis of the rod body are arranged on the cylindrical surface of the rod body, and an edge is formed between every two adjacent spiral chip grooves;
the spiral chip groove extends spirally along the central axis direction of the rod body and forms at least half of lead; the spiral chip groove comprises an arc surface which is coaxial with the rod body, and two ends of the spiral chip groove are connected with the arc surface and protrude towards the direction close to the arc surface.
Further, the bottom surface comprises a first inclined surface, and a second inclined surface, one end of which is connected with the first inclined surface and is symmetrical to the first inclined surface about the arc surface;
the distance between one end of the first inclined surface close to the second inclined surface and a chord opposite to the arc surface is H1, and H1 is larger than 0.
Furthermore, the joint of the first inclined plane and the second inclined plane is in arc transition.
Furthermore, the diameter of the arc surface is D1, and the diameter of the rod body is D1.
Further, the male connector is of a hollow round platform structure, and external threads are arranged on the male connector;
a through hole with a hollow round platform structure is arranged in the female joint, and an internal thread matched with the external thread is arranged in the through hole.
Further, the processing step of the rod body comprises:
s1: hot-drawing the round tube into a hollow round tube by a tube drawing machine;
s2: hot-drawing the hollow round tube into a regular quadrangular tube by a tube drawing machine;
s3: heating the regular quadrangular pipe to 650-750 ℃, and twisting to form an edge and a spiral chip groove to obtain a rod body;
s4: quenching and tempering the rod body to ensure that the hardness of the rod body is 32-36 HRC;
s5: and straightening the straightness of the rod body to ensure that the straightness of the rod body is less than 1 mm/m.
The invention has the following beneficial effects: according to the drilling machine, the hole forming rate and the concentricity are ensured by arranging the plurality of edges, the problem that a drilling rod is abraded too fast and a drilling machine rotator is easy to damage is avoided by using the edges extending in a large spiral manner, hole collapse is avoided, and the phenomena of drill sticking and drill holding of a soft coal seam are reduced; the spiral chip groove extending through the big spiral ensures rapid slag discharge by utilizing the characteristics of large pitch and continuous rotating speed of the spiral chip groove; the small bulge protruding towards the direction of the arc surface is formed by the two first inclined surfaces and the second inclined surface, so that broken slag in the spiral chip discharge groove is discharged quickly, the phenomenon of drill jamming caused by blockage of a slag discharge channel is avoided, and simultaneously, the hole wall of a drilled hole is formed well.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front cross-sectional view of the present invention;
fig. 3 is a sectional view taken along a-a of fig. 2.
In the figure:
1-rod body, 2-runner groove, 3-male joint, 4-external thread, 5-through hole, 6-internal thread, 7-spiral chip groove, 8-edge, 9-arc surface, 10-bottom surface, 11-first inclined surface, 12-second inclined surface and 13-female joint.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
A quadrangular drill rod and a processing method thereof comprise a rod body 1 provided with a circulation groove 2, a male joint 3 which is welded at one end of the rod body 1 through friction and is communicated with the rod body 1, and a female joint 13 which is welded at one end of the rod body 1 through friction, is communicated with the rod body 1 and is matched with the male joint 3;
the male connector 3 is of a hollow round table structure, and external threads 4 are arranged on the male connector 3; the diameter of the male joint 3 close to one end of the rod body 1 is D2, the diameter of the male joint far from one end of the rod body 1 is D3, and D2 is larger than D3; female joint 13 is located body of rod 1 and keeps away from male joint 3 one end, is equipped with the through-hole 5 of cavity round platform structure in the female joint 13, is equipped with the internal thread 6 of mutually supporting with external screw thread 4 in the through-hole 5.
Four spiral chip grooves 7 annularly arrayed around the central axis of the rod body 1 are arranged on the cylindrical surface of the rod body 1, and a seamed edge 8 is formed between every two adjacent spiral chip grooves 7;
the spiral chip groove 7 extends spirally along the central axis direction of the rod body 1 and forms at least half of lead; spiral chip groove 7 includes the arc surface 9 with the coaxial setting of the body of rod 1, and both ends are connected with arc surface 9 and to being close to the bellied bottom surface 10 of arc surface 9 direction, and the diameter that arc surface 9 is right and body of rod 1 diameter are D1.
Compared with the existing triangular drill rod, triangular grooving drill rod and grooving drill rod, the hole forming rate and concentricity are ensured by arranging a plurality of edges 8, the problem that the drill rod is abraded too fast and a drilling machine rotator is easy to damage is avoided by using the edges 8 extending in a large spiral manner, hole collapse is avoided, and the phenomena of drill sticking and drill holding of a soft coal seam are reduced; by the spiral chip groove 7 which extends spirally, the characteristics of large pitch and continuous rotating speed of the spiral chip groove 7 are utilized to ensure rapid slag discharge;
the bottom surface 10 comprises a first inclined surface 11, a second inclined surface 12, one end of which is connected with the first inclined surface 11 and is symmetrical with the first inclined surface 11 about the arc surface 9, and the joint of the first inclined surface 11 and the second inclined surface 12 is in arc transition; the distance between one end of the first inclined surface 11 close to the second inclined surface 12 and a chord opposite to the arc surface 9 is H1, and H1 is greater than 0. A small bulge protruding towards the direction of the arc surface 9 is formed by the two first inclined surfaces 11 and the second inclined surface 12, so that broken slag in the spiral chip discharge groove 7 is discharged quickly, the phenomenon of drill jamming caused by blockage of a slag discharge channel is avoided, and the hole wall of a drilled hole is formed well.
The working principle of the quadrangular drill rod is as follows:
under the action of wind pressure or water pressure, the coal slag is rolled and stirred in the rotation process through the stirring of the four edges, so that the coal slag generated in the drilling process is further crushed, one part of powder is rolled and formed into holes through the four edges, and the other part of powder is rapidly discharged through the spiral chip discharge groove
The processing steps of the rod body comprise:
s1: hot-drawing the round tube into a hollow round tube by a tube drawing machine;
s2: hot-drawing the hollow round tube into a regular quadrangular tube by a tube drawing machine;
s3: heating the regular quadrangular pipe to 650-750 ℃, and twisting to form an edge and a spiral chip groove to obtain a rod body;
s4: quenching and tempering the rod body to ensure that the hardness of the rod body is 32-36 HRC;
s5: and straightening the straightness of the rod body to ensure that the straightness of the rod body is less than 1 mm/m.
Through whole hot drawing shaping, avoid the body of rod to appear the phenomenon of local stress concentration, improved the intensity and the rigidity of the body of rod to further improve coal seam probing efficiency.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (5)
1. A quadrangular drill rod is characterized by comprising a rod body (1) provided with a circulation groove (2), a male joint (3) which is welded at one end of the rod body (1) through friction and communicated with the rod body (1), and a female joint (13) which is welded at one end of the rod body (1) through friction, communicated with the rod body (1) and matched with the male joint (3), wherein the female joint (13) is positioned at one end, far away from the male joint (3), of the rod body (1);
four spiral chip grooves (7) which are annularly arrayed around the central axis of the rod body (1) are arranged on the cylindrical surface of the rod body (1), and a seamed edge (8) is formed between every two adjacent spiral chip grooves (7);
the spiral chip groove (7) extends spirally along the central axis direction of the rod body (1) and forms at least half of lead; the spiral chip groove (7) comprises an arc surface (9) which is coaxial with the rod body (1), and two ends of the spiral chip groove are connected with the arc surface (9) and protrude towards the direction close to the arc surface (9) to form a bottom surface (10).
2. A quadrangular drill rod according to claim 1, wherein the bottom surface (10) comprises a first inclined surface (11), a second inclined surface (12) having one end connected to the first inclined surface (11) and being symmetrical to the first inclined surface (11) with respect to the circular arc surface (9);
the distance between one end of the first inclined surface (11) close to the second inclined surface (12) and a chord opposite to the arc surface (9) is H1, and H1 is larger than 0.
3. A quadrangular drill rod according to claim 2, wherein the junction of the first inclined surface (11) and the second inclined surface (12) is rounded.
4. A quadrangular drill rod according to claim 3, wherein the male connector (3) is of a hollow circular truncated cone structure, and the male connector (3) is provided with external threads (4);
a through hole (5) with a hollow circular truncated cone structure is arranged in the female joint, and an internal thread (6) matched with the external thread (4) is arranged in the through hole (5).
5. A method for machining a quadrangular drill rod according to claim 1 or 2, wherein the manufacture of the rod body (1) comprises the steps of:
s1: hot-drawing the round tube into a hollow round tube by a tube drawing machine;
s2: hot-drawing the hollow round tube into a regular quadrangular tube by a tube drawing machine;
s3: heating the regular quadrangular pipe to 650-750 ℃, and twisting to form an edge and a spiral chip groove to obtain a rod body;
s4: quenching and tempering the rod body to ensure that the hardness of the rod body is 32-36 HRC;
s5: and straightening the straightness of the rod body to ensure that the straightness of the rod body is less than 1 mm/m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011561351.1A CN112647866A (en) | 2020-12-25 | 2020-12-25 | Quadrangular drill rod and machining method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011561351.1A CN112647866A (en) | 2020-12-25 | 2020-12-25 | Quadrangular drill rod and machining method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112647866A true CN112647866A (en) | 2021-04-13 |
Family
ID=75362848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011561351.1A Pending CN112647866A (en) | 2020-12-25 | 2020-12-25 | Quadrangular drill rod and machining method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112647866A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115584959A (en) * | 2022-10-09 | 2023-01-10 | 平顶山市安泰华矿用安全设备制造有限公司 | Rotary drilling machine drilling track control method and drilling equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509357A (en) * | 2009-03-10 | 2009-08-19 | 河南理工大学 | Double-power low spiral auger and its processing method |
| CN203499591U (en) * | 2013-08-14 | 2014-03-26 | 王海峰 | Thrust slag discharge spiral drilling rod for coal mine tunnel drilling |
| CN207499819U (en) * | 2017-08-08 | 2018-06-15 | 中煤科工集团重庆研究院有限公司 | Spiral drill rod |
| CN207620740U (en) * | 2017-11-30 | 2018-07-17 | 河南龙腾新型钻具制造有限公司 | A kind of one-piece auger formula Three-edged drill stem |
-
2020
- 2020-12-25 CN CN202011561351.1A patent/CN112647866A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509357A (en) * | 2009-03-10 | 2009-08-19 | 河南理工大学 | Double-power low spiral auger and its processing method |
| CN203499591U (en) * | 2013-08-14 | 2014-03-26 | 王海峰 | Thrust slag discharge spiral drilling rod for coal mine tunnel drilling |
| CN207499819U (en) * | 2017-08-08 | 2018-06-15 | 中煤科工集团重庆研究院有限公司 | Spiral drill rod |
| CN207620740U (en) * | 2017-11-30 | 2018-07-17 | 河南龙腾新型钻具制造有限公司 | A kind of one-piece auger formula Three-edged drill stem |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115584959A (en) * | 2022-10-09 | 2023-01-10 | 平顶山市安泰华矿用安全设备制造有限公司 | Rotary drilling machine drilling track control method and drilling equipment |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |
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| RJ01 | Rejection of invention patent application after publication |