CN111485069A - Drill rod and treatment process for threaded surface of connecting part of drill rod - Google Patents
Drill rod and treatment process for threaded surface of connecting part of drill rod Download PDFInfo
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- CN111485069A CN111485069A CN202010463587.5A CN202010463587A CN111485069A CN 111485069 A CN111485069 A CN 111485069A CN 202010463587 A CN202010463587 A CN 202010463587A CN 111485069 A CN111485069 A CN 111485069A
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- Prior art keywords
- quenching
- drill rod
- treatment
- thread
- hardness
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0075—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rods of limited length
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to a treatment process of a threaded surface of a connection part in a drill rod, which comprises the following steps: and quenching the drill rod with the machined threads to obtain the drill rod with the hardness HV of 500-780. According to the invention, after the treatment by the process provided by the invention, the wear resistance of the surface of the thread at the joint in the drill rod is high, the use continuity of the drill rod is ensured, and the thread gluing phenomenon is effectively reduced.
Description
Technical Field
The invention relates to the field of surface treatment, in particular to a treatment process for a threaded surface of a drill rod and a connection part of the drill rod.
Background
The rope drill rod is used as a main using tool for geological exploration construction, and in order to ensure the threaded connection strength of the drill rod, the thread tooth form of the drill rod is a special trapezoidal thread. The CN204152450U discloses a full-open type safety joint, which comprises a male joint and a female joint, wherein the male joint comprises a pipe body I and an external thread joint, and the external thread joint is sequentially provided with a shoulder table surface I, a stress-resistant reduction groove I, a triangular thread I, an isosceles trapezoid thread I, an inclined trapezoid thread I and a close region I from inside to outside; female joint, including body II and interior screwed joint, interior screwed joint part is equipped with shoulder mesa II from inside to outside in proper order, and anti stress subducts groove II, triangle-shaped screw thread II, isosceles trapezoid screw thread II, triangle-shaped screw thread III and approach zone II. The utility model discloses fully consider the factor of metal deflection, use safe and reliable, installation and dismouting are rapid, and the cooperation makes the limit torque resistance of screw thread the highest can reach 55000N m. CN203476222U discloses a drill rod and a drilling system. The drill rod is of a seamless tubular structure; the pipe wall thickness of the two ends of the tubular structure is larger than that of the middle part; one end of the drill rod is provided with an external-buckling trapezoidal thread, and the other end of the drill rod is provided with an internal-buckling trapezoidal thread. A drilling system comprising a drill, a drill rod assembly and a drill bit; the drill rod components are connected in series by a plurality of drill rods, and the connection mode of two adjacent drill rods is that an external-buckling trapezoidal thread is connected with an internal-buckling trapezoidal thread; the shaft of the drill is connected with the inner-buckled trapezoidal thread end of the drill rod component, and the outer-buckled trapezoidal thread end of the drill rod component is connected with the drill bit. This drilling rod adopts seamless tubular structure, avoids causing the damage at the seam crossing in the in-process of processing, and trapezoidal thread can increase the wall thickness at drilling rod both ends to add intensity, prevent to cause the damage at the in-process to drilling rod processing, and prevented drilling rod distortion, deformation under the drilling rod pressurized and ambient pressure's the condition. The thread form is narrow and shallow, the top surfaces of the male and female thread teeth are in interference fit, the tooth surfaces are tightly occluded, the thread gluing phenomenon is easily caused in the screwing and unscrewing process, and the thread surface is easily scratched or cannot be unscrewed after being unscrewed.
In order to avoid the sticking phenomenon, a mode of adding a plating layer on the surface of the thread is generally adopted to improve the problems. But the cost of the plating process is high and the environment is protected.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide a drill rod and a treatment process for the threaded surface of a connection part of the drill rod.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a process for treating the surface of a thread at a joint in a drill rod, the process comprising: and quenching the drill rod with the machined threads to obtain the drill rod with the hardness HV of 500-780.
According to the invention, after the treatment by the process provided by the invention, the wear resistance of the surface of the thread at the joint in the drill rod is high, the use continuity of the drill rod is ensured, and the thread gluing phenomenon is effectively reduced.
As a preferable technical scheme of the invention, the quenching range of the drill rod is from the tail end of the approach zone to a position 3-8mm away from the chamfer of the root of the thread.
In a preferred embodiment of the present invention, the quenching medium in the quenching treatment is a mixed solution of water and a quenching liquid.
Preferably, the content of the quenching liquid in the mixed solution is 5 to 15%, and may be, for example, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, or 15%, etc., but is not limited to the recited values, and other values not recited in the range are also applicable.
In the present invention, the quenching liquid may be a water-soluble quenching liquid, and may be, for example, Aqua-Quench 251 or Senco-P65.
Preferably, the temperature of the quenching medium is 50 ℃ or lower, and may be, for example, 50 ℃, 40 ℃, 30 ℃, 20 ℃ or 10 ℃, but is not limited to the values listed, and other values not listed in the range are also applicable.
As a preferred embodiment of the present invention, the advancing speed in the quenching treatment is 1000-1200mm/min, for example, 1000mm/min, 1020mm/min, 1040mm/min, 1060mm/min, 1080mm/min, 1100mm/min, 1120mm/min, 1140mm/min, 1160mm/min, 1180mm/min, or 1200mm/min, but is not limited to the above-mentioned values, and other values not listed in the range are also applicable.
As a preferred technical solution of the present invention, the rotation speed of the drill rod in the quenching treatment is 400-600r/min, for example, 400r/min, 410r/min, 420r/min, 430r/min, 440r/min, 450r/min, 460r/min, 470r/min, 480r/min, 490r/min, 500r/min, 510r/min, 520r/min, 530r/min, 540r/min, 550r/min, 560r/min, 570r/min, 580r/min, 590r/min or 600r/min, etc., but not limited to the values listed, and other values not listed in this range are also applicable.
In a preferred embodiment of the present invention, the anode voltage during quenching is 10 to 11.5kV, and may be, for example, 10kV, 10.1kV, 10.2kV, 10.3kV, 10.4kV, 10.5kV, 10.6kV, 10.7kV, 10.8kV, 10.9kV, 11kV, 11.1kV, 11.2kV, 11.3kV, 11.4kV or 11.5kV, but is not limited to the above-mentioned values, and other values not specifically mentioned in this range are also applicable.
In a preferred embodiment of the present invention, the anode current in the quenching treatment is 10 to 12.3A, and may be, for example, 10A, 10.2A, 10.4A, 10.6A, 10.8A, 11A, 11.2A, 11.4A, 11.6A, 11.8A, 12A, 12.2A or 12.3A, but is not limited to the values listed above, and other values not listed in this range are also applicable.
In a preferred embodiment of the present invention, the gate current in the quenching treatment is 1.2 to 1.4A, and may be, for example, 1.2A, 1.22A, 1.24A, 1.26A, 1.28A, 1.3A, 1.32A, 1.34A, 1.36A, 1.38A or 1.4A, but is not limited to the values listed above, and other values not listed in this range are also applicable.
Preferably, the quenching time is 15 to 30 seconds, for example, 15s, 16s, 17s, 18s, 19s, 20s, 21s, 22s, 23s, 24s, 25s, 26s, 27s, 28s, 29s, or 30s, but not limited to the above-mentioned values, and other values not listed in the range are also applicable.
As a preferable technical scheme of the invention, the treatment process comprises the following steps: quenching the drill rod with the machined threads to obtain a drill rod with the hardness HV of 500-780;
wherein the quenching range of the drill rod is from the tail end of the approach zone to a position 3-8mm away from the chamfer angle at the root of the thread; the quenching medium in the quenching treatment is a mixed solution of water and quenching liquid; the temperature of the quenching medium is less than or equal to 50 ℃; the footage speed in the quenching treatment is 1000-; the rotating speed of the drill rod in the quenching treatment is 400-; the anode voltage in quenching is 10-11.5 kV; the anode current in the quenching treatment is 10-12.3A; the grid current in the quenching treatment is 1.2-1.4A; the quenching time is 15-30 s.
In a second aspect, the invention provides a drill rod obtained by the heat treatment process in the first aspect, wherein the hardness HV of the thread surface at the joint in the drill rod is 500-780; the depth of a hardened layer on the surface of the thread at the connection part in the drill rod is more than or equal to 0.5 mm.
In the present invention, the hardness HV of the threaded surface at the connection in the drill rod is 500-780, which may be, for example, 500, 550, 600, 650, 700, 750, 780, etc., but is not limited to the values listed, and other values not listed in the range are also applicable.
In the present invention, the depth of the hardened layer on the threaded surface of the joint in the drill rod is not less than 0.5mm, and may be, for example, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm, but is not limited to the above-mentioned values, and other values not mentioned in the range are also applicable.
In the invention, the wear resistance is shown by taking hardness as a reference, and the higher the hardness, the better the wear resistance.
Compared with the prior art, the invention at least has the following beneficial effects:
the surface of the thread at the joint of the drill rod treated by the treatment process provided by the invention has high wear resistance, the using continuity of the drill rod is ensured, and the thread gluing phenomenon is effectively reduced.
Detailed Description
To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:
example 1
The embodiment provides a drill rod, wherein the hardness HV of the thread surface of the connection part in the drill rod is 750; the depth of a hardened layer on the thread surface of the connection part in the drill rod is 0.5 mm.
The treatment process of the thread surface of the connection part in the drill rod comprises the following steps: quenching the drill rod with the machined threads to obtain the drill rod;
wherein the quenching range of the drill rod is from the tail end of the approach zone to a position 3mm away from the chamfer angle of the root of the thread; the quenching medium in the quenching treatment is a mixed solution of water and quenching liquid (Aqua-Quench 251); the content of the quenching liquid in the mixed solution is 12 percent; the temperature of the quenching medium is 15 ℃; the footage speed in the quenching treatment is 1150 mm/min; the rotating speed of the drill rod in the quenching treatment is 600 r/min; the anode voltage in the quenching is 11 kV; the anode current in the quenching treatment is 10A; the grid current in the quenching treatment is 1.2A; the quenching time was 15 seconds.
The drill rod obtained by the embodiment has the advantages that the wear resistance of the surface of the thread at the connecting part is high, the using continuity of the drill rod is guaranteed in the using process, and the thread gluing phenomenon is effectively reduced.
Example 2
The embodiment provides a drill rod, wherein the hardness HV of the thread surface of the connection part in the drill rod is 620; the depth of a hardened layer on the thread surface of the connection part in the drill rod is 0.7 mm.
The treatment process of the thread surface of the connection part in the drill rod comprises the following steps: quenching the drill rod with the machined threads to obtain the drill rod;
wherein the quenching range of the drill rod is from the tail end of the approach zone to a position 8mm away from the chamfer angle of the root of the thread; the quenching medium in the quenching treatment is a mixed solution of water and quenching liquid (Aqua-Quench 251); the content of the quenching liquid in the mixed solution is 7 percent; the temperature of the quenching medium is 40 ℃; the footage speed in the quenching treatment is 1200 mm/min; the rotating speed of the drill rod in the quenching treatment is 400 r/min; the anode voltage in the quenching is 10.2 kV; the anode current in the quenching treatment is 12.2A; the grid current in the quenching treatment is 1.4A; the quenching time was 20 seconds.
The drill rod obtained by the embodiment has the advantages that the wear resistance of the surface of the thread at the connecting part is high, the using continuity of the drill rod is guaranteed in the using process, and the thread gluing phenomenon is effectively reduced.
Example 3
The embodiment provides a drill rod, wherein the hardness HV of the thread surface of the connection part in the drill rod is 500; the depth of a hardened layer on the thread surface of the connection part in the drill rod is 0.5 mm.
The treatment process of the thread surface of the connection part in the drill rod comprises the following steps: quenching the drill rod with the machined threads to obtain the drill rod;
wherein the quenching range of the drill rod is from the tail end of the approach zone to a position 5mm away from the chamfer angle of the root of the thread; the quenching medium in the quenching treatment is a mixed solution of water and quenching liquid (Aqua-Quench 251); the content of the quenching liquid in the mixed solution is 10 percent; the temperature of the quenching medium is 20 ℃; the footage speed in the quenching treatment is 1040 mm/min; the rotating speed of the drill rod in the quenching treatment is 520 r/min; the anode voltage in the quenching is 11.3 kV; the anode current in the quenching treatment is 10.7A; the gate current in the quenching treatment is 1.25A; the quenching treatment time was 27 seconds.
The drill rod obtained by the embodiment has the advantages that the wear resistance of the surface of the thread at the connecting part is high, the using continuity of the drill rod is guaranteed in the using process, and the thread gluing phenomenon is effectively reduced.
Example 4
The embodiment provides a drill rod, wherein the hardness HV of the thread surface of the connection part in the drill rod is 750; the depth of a hardened layer on the thread surface of the connection part in the drill rod is 0.65 mm.
The treatment process of the thread surface of the connection part in the drill rod comprises the following steps: quenching the drill rod with the machined threads to obtain the drill rod;
wherein the quenching range of the drill rod is from the tail end of the approach zone to a position 6mm away from the chamfer angle of the root of the thread; the quenching medium in the quenching treatment is a mixed solution of water and quenching liquid (Aqua-Quench 251); the content of the quenching liquid in the mixed solution is 5 percent; the temperature of the quenching medium is 30 ℃; the footage speed in the quenching treatment is 1170 mm/min; the rotating speed of the drill rod in the quenching treatment is 420 r/min; the anode voltage in the quenching is 10.6 kV; the anode current in the quenching treatment is 11.6A; the gate current in the quenching treatment is 1.28A; the quenching time was 17 s.
The drill rod obtained by the embodiment has the advantages that the wear resistance of the surface of the thread at the connecting part is high, the using continuity of the drill rod is guaranteed in the using process, and the thread gluing phenomenon is effectively reduced.
Example 5
The embodiment provides a drill rod, wherein the hardness HV of the thread surface of the connection part in the drill rod is 730; the depth of a hardened layer on the thread surface of the connection part in the drill rod is 0.8 mm.
The treatment process of the thread surface of the connection part in the drill rod comprises the following steps: quenching the drill rod with the machined threads to obtain the drill rod;
wherein the quenching range of the drill rod is from the tail end of the approach zone to a position 5.7mm away from the chamfer angle of the root of the thread; the quenching medium in the quenching treatment is a mixed solution of water and quenching liquid (Aqua-Quench 251); the content of the quenching liquid in the mixed solution is 15 percent; the temperature of the quenching medium is 25 ℃; the footage speed in the quenching treatment is 1200 mm/min; the rotating speed of the drill rod in the quenching treatment is 530 r/min; the anode voltage in the quenching is 10.7 kV; the anode current in the quenching treatment is 10.2A; the gate current in the quenching treatment is 1.37A; the quenching time was 30 seconds.
The drill rod obtained by the embodiment has the advantages that the wear resistance of the surface of the thread at the connecting part is high, the using continuity of the drill rod is guaranteed in the using process, and the thread gluing phenomenon is effectively reduced.
Comparative example 1
The difference from example 1 is only that the approach speed in the quenching treatment is 1300 mm/min; the hardness HV of the thread surface at the joint in the obtained drill rod is 400, and the depth of a hardened layer is 0.3 mm; the obtained drill rod has low wear resistance of the surface of the thread at the joint and thread gluing phenomenon in the using process.
Comparative example 2
The difference from example 1 is only that the approach speed in the quenching treatment is 500 mm/min; the hardness HV of the thread surface at the joint in the obtained drill rod is 430, and the depth of a hardened layer is 0.2 mm; the obtained drill rod has low wear resistance of the surface of the thread at the joint and thread gluing phenomenon in the using process.
Comparative example 3
Only the difference from example 1 was that the anode voltage in the quenching was 15 kV; the hardness HV of the thread surface at the joint in the obtained drill rod is 340, and the depth of a hardened layer is 0.27 mm; the obtained drill rod has low wear resistance of the surface of the thread at the joint and thread gluing phenomenon in the using process.
Comparative example 4
Only the difference from example 1 was that the anode voltage in the quenching was 5 kV; the hardness HV of the thread surface at the joint in the obtained drill rod is 430, and the depth of a hardened layer is 0.3 mm; the obtained drill rod has low wear resistance of the surface of the thread at the joint and thread gluing phenomenon in the using process.
Comparative example 5
Only differs from example 1 in that the anode current in the quenching treatment was 5A; the hardness HV of the thread surface at the joint in the obtained drill rod is 470, and the depth of a hardened layer is 0.22 mm; the obtained drill rod has low wear resistance of the surface of the thread at the joint and thread gluing phenomenon in the using process.
Comparative example 6
Only differs from example 1 in that the anode current in the quenching treatment was 15A; the hardness HV of the thread surface at the joint in the obtained drill rod is 370, and the depth of a hardened layer is 0.32 mm; the obtained drill rod has low wear resistance of the surface of the thread at the joint and thread gluing phenomenon in the using process.
According to the results of the embodiment and the comparative example, the reasonable design of the heat treatment process is adopted, so that the wear resistance of the thread surface at the connecting part in the drill rod treated by the treatment process provided by the invention is high, the use continuity of the drill rod is ensured, and the thread gluing phenomenon is effectively reduced.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A treatment process for the surfaces of threads at joints in a drill rod, the treatment process comprising: and quenching the drill rod with the machined threads to obtain the drill rod with the hardness HV of 500-780.
2. The process of claim 1, wherein the drill pipe is quenched in a range from the end of the approach zone to a distance of 3-8mm from the thread root chamfer.
3. The process according to claim 1 or 2, wherein the quenching medium in the quenching treatment is a mixed solution of water and a quenching liquid;
preferably, the content of the quenching liquid in the mixed solution is 5-15%;
preferably, the temperature of the quenching medium is less than or equal to 50 ℃.
4. The process according to any one of claims 1 to 3, wherein the footage speed in the quenching treatment is 1000-.
5. The process as claimed in any one of claims 1 to 4, wherein the rotation speed of the drill rod in the quenching treatment is 400-600 r/min.
6. The process of any one of claims 1 to 5, wherein the anode voltage in the quenching is 10 to 11.5 kV.
7. The process according to any one of claims 1 to 6, wherein the anodic current in the quenching treatment is 10 to 12.3A.
8. The process of any one of claims 1-7, wherein the gate current in the quenching process is 1.2-1.4A;
preferably, the time of the quenching treatment is 15 to 30 s.
9. The process of any one of claims 1 to 8, wherein the treatment process comprises: quenching the drill rod with the machined threads to obtain a drill rod with the hardness HV of 500-780;
wherein the quenching range of the drill rod is from the tail end of the approach zone to a position 3-8mm away from the chamfer angle at the root of the thread; the quenching medium in the quenching treatment is a mixed solution of water and quenching liquid; the content of the quenching liquid in the mixed solution is 5-15%; the temperature of the quenching medium is less than or equal to 50 ℃; the footage speed in the quenching treatment is 1000-; the rotating speed of the drill rod in the quenching treatment is 400-; the anode voltage in quenching is 10-11.5 kV; the anode current in the quenching treatment is 10-12.3A; the grid current in the quenching treatment is 1.2-1.4A; the quenching time is 15-30 s.
10. Drill rod obtained by the heat treatment process according to any one of claims 1 to 9, wherein the hardness HV of the threaded surface at the connection in the drill rod is 500-; the depth of a hardened layer on the surface of the thread at the connection part in the drill rod is more than or equal to 0.5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010463587.5A CN111485069A (en) | 2020-05-27 | 2020-05-27 | Drill rod and treatment process for threaded surface of connecting part of drill rod |
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| CN202010463587.5A CN111485069A (en) | 2020-05-27 | 2020-05-27 | Drill rod and treatment process for threaded surface of connecting part of drill rod |
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| CN111485069A true CN111485069A (en) | 2020-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020926A (en) * | 2021-03-23 | 2021-06-25 | 无锡中地钻探装备有限公司 | Drill rod production process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4710245A (en) * | 1984-12-10 | 1987-12-01 | Mannesmann Ag | Method of making tubular units for the oil and gas industry |
| JP2001214683A (en) * | 2000-02-01 | 2001-08-10 | Koken Boring Mach Co Ltd | Drill rod |
| CN202348142U (en) * | 2011-12-15 | 2012-07-25 | 山东明珠石油装备制造有限公司 | Non-excavation power head protective pup joint |
| CN102628339A (en) * | 2012-04-25 | 2012-08-08 | 雷敏 | Mine drill stem |
| EP2489754A2 (en) * | 2011-02-18 | 2012-08-22 | Mitsubishi Materials Corporation | Hollow drilling steel rod and method of manufacturing the same |
| CN103789523A (en) * | 2012-11-27 | 2014-05-14 | 贵州高峰石油机械股份有限公司 | Method for enhancing drilling torque and wear resistance of patio drill stem and patio drill stem |
| CN204402373U (en) * | 2014-12-03 | 2015-06-17 | 刘文惠 | Easy jointed rod |
-
2020
- 2020-05-27 CN CN202010463587.5A patent/CN111485069A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4710245A (en) * | 1984-12-10 | 1987-12-01 | Mannesmann Ag | Method of making tubular units for the oil and gas industry |
| JP2001214683A (en) * | 2000-02-01 | 2001-08-10 | Koken Boring Mach Co Ltd | Drill rod |
| EP2489754A2 (en) * | 2011-02-18 | 2012-08-22 | Mitsubishi Materials Corporation | Hollow drilling steel rod and method of manufacturing the same |
| CN202348142U (en) * | 2011-12-15 | 2012-07-25 | 山东明珠石油装备制造有限公司 | Non-excavation power head protective pup joint |
| CN102628339A (en) * | 2012-04-25 | 2012-08-08 | 雷敏 | Mine drill stem |
| CN103789523A (en) * | 2012-11-27 | 2014-05-14 | 贵州高峰石油机械股份有限公司 | Method for enhancing drilling torque and wear resistance of patio drill stem and patio drill stem |
| CN204402373U (en) * | 2014-12-03 | 2015-06-17 | 刘文惠 | Easy jointed rod |
Non-Patent Citations (2)
| Title |
|---|
| "高频表面淬火钻杆在金刚石钻进中试用效果良好 ", 《探矿工程(岩土钻掘工程)》 * |
| 冯耀荣等: "钻杆接头的技术标准与用钢及热处理工艺 ", 《石油机械》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020926A (en) * | 2021-03-23 | 2021-06-25 | 无锡中地钻探装备有限公司 | Drill rod production process |
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Application publication date: 20200804 |