CN103867136B - For improving the method for drill pipe box abrasion resistance - Google Patents
For improving the method for drill pipe box abrasion resistance Download PDFInfo
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- CN103867136B CN103867136B CN201310746042.5A CN201310746042A CN103867136B CN 103867136 B CN103867136 B CN 103867136B CN 201310746042 A CN201310746042 A CN 201310746042A CN 103867136 B CN103867136 B CN 103867136B
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Abstract
The invention discloses a kind of method for improving drill pipe box abrasion resistance, the method comprises: forming step; Tool joint is processed into the step-like structure comprising several shoulders; Wherein, be positioned at the outermost shoulder external diameter of described tool joint and be set as K
1, the shoulder external diameter being positioned at described tool joint innermost layer is set as K
2; Described K
1than described K
2large 4mm-10mm; Heating steps; The outermost shoulder surface temperature of described tool joint will be positioned at and be heated to T
1; Cooling step; Carrying out quench cooled process to described outermost shoulder surface temperature to described tool joint outermost shoulder surface is T
2, and from T
2start nature cooling; Wherein, described T
1than described T
2large 600 DEG C-750 DEG C.The present invention has the advantages that operating procedure is simple, anti-wear performance is strong, effectively prevent the wearing and tearing of tool joint internal layer shoulder, decreases maintenance, substitutes number of times.
Description
Technical field
The invention belongs to drill pipe art, particularly a kind of method for improving drill pipe box abrasion resistance.
Background technology
Drilling rod is the most frequently used instrument of one in oil and gas well drilling process, is made up of drill pipe body and tool joint two parts.Because tool joint external diameter is much larger than drill pipe body external diameter, so in drilling process, easily wear and tear in tool joint position.The wearing and tearing of tool joint reduce the supporting capacity of tool joint, will cause drilling rod generation initial failure or scrap when wear extent is excessive.Refer to Fig. 2, in order to reduce the wearing and tearing of tool joint, current main solution is at the higher wear-resistant strip material of tool joint external surface surfacing one deck hardness.In actual job process, first wear-resistant strip material weares and teares, thus avoids the wearing and tearing of tool joint external surface, as shown in Figure 1; But it is expensive that its shortcoming is wear-resistant strip material price, significantly increases operation cost, and the wear-resistant strip of surfacing is easy to crack peels off.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of for improving drill pipe box wearing-resistance method, and the method has the advantages that operating procedure is simple, preparation tool joint anti-wear performance is strong.
For solving the problems of the technologies described above, the invention provides a kind of for improving drill pipe box wearing-resistance method, comprising: forming step; Tool joint is processed into the step-like structure comprising several shoulders; Wherein, be positioned at the outermost shoulder external diameter of described tool joint and be set as K
1, the shoulder external diameter being positioned at described tool joint innermost layer is set as K
2; Described K
1than described K
2large 4mm-10mm; Heating steps; The outermost shoulder surface temperature of described tool joint will be positioned at and be heated to T
1; Cooling step; Carrying out quench cooled process to described outermost shoulder surface temperature to described tool joint outermost shoulder surface is T
2, and from T
2start nature cooling; Wherein, described T
1than described T
2large 600 DEG C-750 DEG C.
Further, described heating steps comprises: used time 5S-10S will be positioned at the outermost shoulder surface temperature of described tool joint and be heated to T
1; And to described tool joint outermost shoulder surface at described T
1lower insulation 3S-10S.
Further, the outermost shoulder length K of described tool joint is positioned at
3number range be 80mm-115mm.
Further, described T
1number range be 900 DEG C-950 DEG C.
On the one hand, described forming step can comprise: tool joint is processed into the step-like structure comprising 2 shoulders, comprises: the first shoulder, the second shoulder; The external diameter of described first shoulder is set as 185mm, and the external diameter of described second shoulder is set as 175mm; Wherein, described first shoulder and described second shoulder are with arc transition, and the radius of curvature of described circular arc is 8mm.Described heating steps comprises: the surface temperature of described first shoulder is heated to 930 DEG C by used time 5S; Described first shoulder is incubated 5S at 930 DEG C.
Another aspect, described forming step can comprise: tool joint is processed into the step-like structure comprising 2 shoulders, comprises: the first shoulder, the second shoulder; The external diameter of described first shoulder is set as 215mm, and the external diameter of described second shoulder is set as 195mm; Wherein, described first shoulder and described second shoulder are with arc transition, and the radius of curvature of described circular arc is 12mm.Described heating steps comprises: the surface temperature of described first shoulder is heated to 950 DEG C by used time 10S; Described first shoulder is incubated 10S at 950 DEG C.
Again on the one hand, described forming step can comprise: tool joint is processed into the step-like structure comprising 2 shoulders, comprises: the first shoulder, the second shoulder; The external diameter of described first shoulder is set as 145mm, and the external diameter of described second shoulder is set as 140mm; Wherein, described first shoulder and described second shoulder are with arc transition, and the radius of curvature of described circular arc is 5mm.Described heating steps comprises: the surface temperature of described first shoulder is heated to 900 DEG C by used time 3S; Described first shoulder is incubated 3S at 900 DEG C.
A kind of method for improving drill pipe box abrasion resistance provided by the invention, is processed into step-like (stepped) structure comprising several shoulders by tool joint; And the outermost shoulder surface of tool joint is heated respectively by heating steps, cooling step successively, cooling processing; Make final tool joint outermost shoulder surface (wear-resisting shoulder) hardness be greater than HRC50, have the advantages that operating procedure is simple, anti-wear performance is strong, effectively prevent the wearing and tearing of tool joint internal layer shoulder, decrease maintenance, substitute number of times.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of method integrated artistic schematic flow sheet for improving drill pipe box abrasion resistance that Fig. 1 provides for the embodiment of the present invention; And
Fig. 2 is the drill pipe box schematic diagram of surfacing wear-resistant strip in prior art; And
In a kind of method for improving drill pipe box abrasion resistance that Fig. 3 provides for the embodiment of the present invention, the structural representation after drill pipe box machine-shaping and
In a kind of method for improving drill pipe box abrasion resistance that Fig. 4 provides for the embodiment of the present invention, the process flow diagram one of forming step; And
In a kind of method for improving drill pipe box abrasion resistance that Fig. 5 provides for the embodiment of the present invention, the process flow diagram one of heating steps; And
In a kind of method for improving drill pipe box abrasion resistance that Fig. 6 provides for the embodiment of the present invention, the process flow diagram two of forming step; And
In a kind of method for improving drill pipe box abrasion resistance that Fig. 7 provides for the embodiment of the present invention, the process flow diagram two of heating steps; And
In a kind of method for improving drill pipe box abrasion resistance that Fig. 8 provides for the embodiment of the present invention, the process flow diagram three of forming step; And
In a kind of method for improving drill pipe box abrasion resistance that Fig. 9 provides for the embodiment of the present invention, the process flow diagram three of heating steps.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
Refer to Fig. 1, a kind of method for improving drill pipe box abrasion resistance provided by the invention, specifically comprises the steps:
Forming step 101: tool joint is processed into step-like (stepped) structure comprising several shoulders; Wherein, be positioned at the outermost shoulder external diameter of tool joint and be set as K
1, the shoulder external diameter being positioned at tool joint innermost layer is set as K
2; And K
1numeric ratio K
2the large 4mm-10mm of numerical value;
Specifically, in this forming step 101, outermost shoulder length can be set to K
3, and K
3number range can be set as 80mm-115mm.
Heating steps 102, will be positioned at the outermost shoulder surface temperature of tool joint and be heated to T
1;
Preferably, by load coil being set in the outermost shoulder of tool joint on the surface, used time 5S-10S will be positioned at the outermost shoulder surface temperature of tool joint and be heated to T
1; And to tool joint outermost shoulder surface at described T
1lower insulation 3S-10S;
Cooling step 103, carrying out quench cooled process to outermost shoulder surface temperature to tool joint outermost shoulder surface is T
2, and from T
2start nature cooling; Wherein, T
1numeric ratio T
2large 600 DEG C-750 DEG C of numerical value;
Preferably, by adopting quenching liquid to passing through at T
1quench cooled process is carried out on the outermost shoulder surface of tool joint after lower insulation 3S-10S, treats that the outermost shoulder surface temperature of tool joint is down to T
2time stop spray quench liquid, and from T
2start to allow it naturally cool;
Refer to Fig. 3, in forming step 101, easy, with low cost for ease of tool joint structure design, tool joint can be processed into step-like (stepped) structure comprising 2 shoulders, namely comprise: the wear-resisting shoulder of the first shoulder 201(), second shoulder 202(work shoulder), the first shoulder 201 for the protection of the second shoulder 202 from wearing and tearing; Wherein, with the transition of smooth circular arc 203 between the first shoulder 201, second shoulder 202, the radius of curvature of smooth circular arc 203 can be greater than 4mm; The width of the first shoulder 201 is greater than the width of the second shoulder 202; Below, tool joint to be processed into step-like (stepped) structure comprising 2 shoulders, by embodiment one, embodiment two and embodiment three, a kind of method for improving drill pipe box abrasion resistance provided by the invention is described in further details, to support technical problem to be solved by this invention.
Embodiment one
Refer to Fig. 4-5, a kind of method for improving drill pipe box abrasion resistance that the present embodiment one provides:
Forming step 101 can specifically comprise: step 101a1, tool joint is processed into the step-like structure comprising 2 shoulders, namely comprises: the first shoulder 201, second shoulder 202; Step 101a2, is set as 185mm by the external diameter of the first shoulder 201, and the external diameter of the second shoulder 202 is set as 175mm; Wherein, the first shoulder 201 and the second shoulder 202 are with the transition of smooth circular arc 203, and the radius of curvature of this circular arc 203 is 8mm.Carry out modulation treatment to the tool joint be made up of the first shoulder 201, second shoulder 202, the metallographic structure of this tool joint is tempered sorbite;
Heating steps 102 can specifically comprise: step 102a1, and the surface temperature of the first shoulder 201 is heated to 930 DEG C by used time 5S; Step 102a2, is incubated 5S by the first shoulder 201 at 930 DEG C;
It is pointed out that, by quenching liquid, quench cooled process is carried out to the surface through being incubated the first shoulder 201 after 5S process at 930 DEG C, when the first shoulder 201 surface temperature is down to 240 DEG C, stop spray quench liquid, naturally cooling; The now metallographic structure of the first shoulder 201 is martensitic structure, and hardness is HRC54-HRC56.
Embodiment two
Refer to Fig. 6-7, a kind of method for improving drill pipe box abrasion resistance that the present embodiment two provides:
Forming step 101 can specifically comprise: step 101b1, tool joint is processed into the step-like structure comprising 2 shoulders, namely comprises: the first shoulder 201, second shoulder 202; Step 101b2, is set as 215mm by the external diameter of the first shoulder 201, and the external diameter of the second shoulder 202 is set as 195mm; Wherein, the first shoulder 201 and the second shoulder 202 are with the transition of smooth circular arc 203, and the radius of curvature of this circular arc 203 is 12mm.Carry out modulation treatment to the tool joint be made up of the first shoulder 201, second shoulder 202, the metallographic structure of this tool joint is tempered sorbite;
Heating steps 102 can specifically comprise: step 102b1, and the surface temperature of the first shoulder 201 is heated to 950 DEG C by used time 10S; Step 102b2, is incubated 10S by the first shoulder 201 at 950 DEG C;
It is pointed out that, by quenching liquid, quench cooled process is carried out to the surface through being incubated the first shoulder 201 after 10S process at 950 DEG C, when the first shoulder 201 surface temperature is down to 300 DEG C, stop spray quench liquid, naturally cooling; The now metallographic structure of the first shoulder 201 is martensitic structure, and hardness is HRC52-HRC55.
Embodiment three
Refer to Fig. 8-9, a kind of method for improving drill pipe box abrasion resistance that the present embodiment three provides:
Forming step 101 can specifically comprise: step 101c1, tool joint is processed into the step-like structure comprising 2 shoulders, namely comprises: the first shoulder 201, second shoulder 202; Step 101c2, is set as 145mm by the external diameter of the first shoulder 201, and the external diameter of the second shoulder 202 is set as 140mm; Wherein, the first shoulder 201 and the second shoulder 202 are with the transition of smooth circular arc 203, and the radius of curvature of this circular arc 203 is 5mm.Carry out modulation treatment to the tool joint be made up of the first shoulder 201, second shoulder 202, the metallographic structure of this tool joint is tempered sorbite;
Heating steps 102 can specifically comprise: step 102c1, and the surface temperature of the first shoulder 201 is heated to 900 DEG C by used time 10S; Step 102c2, is incubated 3S by the first shoulder 201 at 950 DEG C;
It is pointed out that, by quenching liquid, quench cooled process is carried out to the surface through being incubated the first shoulder 201 after 3S process at 900 DEG C, when the first shoulder 201 surface temperature is down to 200 DEG C, stop spray quench liquid, naturally cooling; The now metallographic structure of the first shoulder 201 is martensitic structure, and hardness is HRC55-HRC60.
A kind of method for improving drill pipe box abrasion resistance provided by the invention, is processed into step-like (stepped) structure comprising several shoulders by tool joint; And the outermost shoulder surface of tool joint is heated respectively by heating steps, cooling step successively, cooling processing; Final tool joint outermost shoulder surface (wear-resisting shoulder) hardness is made to be greater than HRC50, have the advantages that anti-wear performance is strong, effectively prevent the wearing and tearing of tool joint internal layer shoulder, decrease maintenance, substitute number of times, reduce manufacturing cost, have the advantages that applicability is wide.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. for improving a method for drill pipe box abrasion resistance, it is characterized in that, comprising:
Forming step; Tool joint is processed into the step-like structure comprising several shoulders; Wherein, be positioned at the outermost shoulder external diameter of described tool joint and be set as K
1, the shoulder external diameter being positioned at described tool joint innermost layer is set as K
2; Described K
1than described K
2large 4mm-10mm;
Heating steps; The outermost shoulder surface temperature of described tool joint will be positioned at and be heated to T
1;
Cooling step; Carrying out quench cooled process to described outermost shoulder surface temperature to described tool joint outermost shoulder surface is T
2, and from T
2start nature cooling; Wherein, described T
1than described T
2high 600 DEG C-750 DEG C.
2. method according to claim 1, is characterized in that, described heating steps comprises:
Used time 5S-10S will be positioned at the outermost shoulder surface temperature of described tool joint and be heated to T
1; And to described tool joint outermost shoulder surface at described T
1lower insulation 3S-10S.
3. method according to claim 1, is characterized in that:
Be positioned at the outermost shoulder length K of described tool joint
3number range be 80mm-115mm.
4. method according to claim 1, is characterized in that:
Described T
1number range be 900 DEG C-950 DEG C.
5. method according to claim 4, is characterized in that, described forming step comprises:
Tool joint is processed into the step-like structure comprising 2 shoulders, comprises: the first shoulder, the second shoulder;
The external diameter of described first shoulder is set as 185mm, and the external diameter of described second shoulder is set as 175mm; Wherein, described first shoulder and described second shoulder are with arc transition, and the radius of curvature of described circular arc is 8mm.
6. method according to claim 5, is characterized in that, described heating steps comprises:
The surface temperature of described first shoulder is heated to 930 DEG C by used time 5S;
Described first shoulder is incubated 5S at 930 DEG C.
7. method according to claim 4, is characterized in that, described forming step comprises:
Tool joint is processed into the step-like structure comprising 2 shoulders, comprises: the first shoulder, the second shoulder;
The external diameter of described first shoulder is set as 215mm, and the external diameter of described second shoulder is set as 195mm; Wherein, described first shoulder and described second shoulder are with arc transition, and the radius of curvature of described circular arc is 12mm.
8. method according to claim 7, is characterized in that, described heating steps comprises:
The surface temperature of described first shoulder is heated to 950 DEG C by used time 10S;
Described first shoulder is incubated 10S at 950 DEG C.
9. method according to claim 4, is characterized in that, described forming step comprises:
Tool joint is processed into the step-like structure comprising 2 shoulders, comprises: the first shoulder, the second shoulder;
The external diameter of described first shoulder is set as 145mm, and the external diameter of described second shoulder is set as 140mm; Wherein, described first shoulder and described second shoulder are with arc transition, and the radius of curvature of described circular arc is 5mm.
10. method according to claim 9, is characterized in that, described heating steps comprises:
The surface temperature of described first shoulder is heated to 900 DEG C by used time 3S;
Described first shoulder is incubated 3S at 900 DEG C.
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|---|---|---|---|
| CN201310746042.5A CN103867136B (en) | 2013-12-30 | 2013-12-30 | For improving the method for drill pipe box abrasion resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310746042.5A CN103867136B (en) | 2013-12-30 | 2013-12-30 | For improving the method for drill pipe box abrasion resistance |
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| CN103867136A CN103867136A (en) | 2014-06-18 |
| CN103867136B true CN103867136B (en) | 2016-02-10 |
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|---|---|---|---|---|
| US5334268A (en) * | 1992-12-17 | 1994-08-02 | Ltv Energy Products Co. | Method of producing high strength sucker rod coupling |
| US6375895B1 (en) * | 2000-06-14 | 2002-04-23 | Att Technology, Ltd. | Hardfacing alloy, methods, and products |
| CN101275207A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | H2S-corrosion-resistant tool joint for petroleum drill pipe and hot treatment method thereof |
| CN101570861A (en) * | 2009-06-02 | 2009-11-04 | 西安国源石油科技有限公司 | Surface treatment method for sucker rod coupling |
| CN101876002A (en) * | 2010-04-26 | 2010-11-03 | 晋西工业集团有限责任公司 | Hardening and tempering method in the process of manufacturing drill stem connector |
| CN102140611A (en) * | 2011-03-18 | 2011-08-03 | 上海海隆石油管材研究所 | 135 steel-level drill rod connector and heat treatment process thereof |
-
2013
- 2013-12-30 CN CN201310746042.5A patent/CN103867136B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5334268A (en) * | 1992-12-17 | 1994-08-02 | Ltv Energy Products Co. | Method of producing high strength sucker rod coupling |
| US6375895B1 (en) * | 2000-06-14 | 2002-04-23 | Att Technology, Ltd. | Hardfacing alloy, methods, and products |
| CN101275207A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | H2S-corrosion-resistant tool joint for petroleum drill pipe and hot treatment method thereof |
| CN101570861A (en) * | 2009-06-02 | 2009-11-04 | 西安国源石油科技有限公司 | Surface treatment method for sucker rod coupling |
| CN101876002A (en) * | 2010-04-26 | 2010-11-03 | 晋西工业集团有限责任公司 | Hardening and tempering method in the process of manufacturing drill stem connector |
| CN102140611A (en) * | 2011-03-18 | 2011-08-03 | 上海海隆石油管材研究所 | 135 steel-level drill rod connector and heat treatment process thereof |
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| Publication number | Publication date |
|---|---|
| CN103867136A (en) | 2014-06-18 |
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